WO2019105139A1 - Optical imaging lens - Google Patents

Abstract

Provided is an optical imaging lens, comprising in order from an object side to an image side along an optical axis: a first lens (E1), a second lens (E2), a third lens (E3), a fourth lens (E4), a fifth lens (E5), a sixth lens (E6), a seventh lens (E7) and an eighth lens (E8). Wherein, the first lens (E1) has a positive power, and an object side surface (S1) of the first lens (E1) is a convex surface. the second lens (E2) has a negative power, the object side surface (S3) of the second lens (E2) is a convex surface, and an image side surface (S4) of the same is a concave surface. the third lens (E3) has a positive power or a negative power; the fourth lens (E4) has a positive power or a negative power; the fifth lens (E5) has a positive power or a negative power; the sixth lens (E6) has a positive power or a negative power, and an object side surface (S11) of the sixth lens (E6) is a convex surface; the seventh lens (E7) has a positive power or a negative power; the eighth lens (E8) has a positive power or a negative power, and the object side surface (S15) of the eighth lens (E8) is a convex surface, and the image side surface (S16) of the same is a concave surface. An effective focal length f1 of the first lens (E1) and a center thickness CT1 of the first lens (E1) on the optical axis satisfy 3.0<f1/CT1<4.0.

Description

Optical imaging lens

Cross-reference to related applications

The present application claims priority to and the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit of the benefit.

Technical field

The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including eight lenses.

Background technique

With the rapid update of smartphones, tablets and consumer electronics related to artificial intelligence, the market demand for product-side imaging lenses is becoming more diverse. In addition to the high-pixel, high-resolution and/or high-relative brightness characteristics of the product-side imaging lens, the requirements for large angle of view and large aperture of the imaging lens are also met to meet various shooting requirements.

Summary of the invention

The present application provides an optical imaging lens that can be adapted for use in a portable electronic product that can at least solve or partially address at least one of the above disadvantages of the prior art.

In one aspect, the present application provides an optical imaging lens that includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. Wherein, the first lens may have a positive power, the object side may be a convex surface; the second lens may have a negative power, the object side may be a convex surface, the image side may be a concave surface; and the third lens has a positive power or a negative a power of a power; a fourth lens having a positive power or a negative power; a fifth lens having a positive power or a negative power; and a sixth lens having a positive power or a negative power, the object side being a convex surface; The seventh lens has a positive power or a negative power; the eighth lens has a positive power or a negative power, and the object side surface may be a convex surface, and the image side surface may be a concave surface. Wherein, the effective focal length f1 of the first lens and the center thickness CT1 of the first lens on the optical axis can satisfy 3.0 < f1/CT1 < 4.0.

In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy f/EPD ≤ 1.9.

In one embodiment, the distance from the center of the object side of the first lens to the imaging surface of the optical imaging lens on the optical axis is half the length of the effective pixel area of the imaging surface of the optical imaging lens, ImgH can satisfy TTL/ ImgH ≤ 1.6.

In one embodiment, the radius of curvature R6 of the image side of the third lens and the radius of curvature R3 of the object side of the second lens may satisfy |R6/R3|<7.0.

In one embodiment, the effective focal length f2 of the second lens and the effective focal length f1 of the first lens may satisfy -2.1 < f2 / f1 < - 1.5.

In one embodiment, the separation distance T23 of the second lens and the third lens on the optical axis, the separation distance T56 of the fifth lens and the sixth lens on the optical axis, and any adjacent two of the first lens to the eighth lens The sum of the separation distances of the lenses on the optical axis ΣAT can satisfy 0.3<(T23+T56)/∑AT<1.0.

In one embodiment, the combined effective focal length f of the optical imaging lens and the combined focal length f678 of the sixth lens, the seventh lens, and the eighth lens may satisfy -0.4 < f / f678 < 0.

In one embodiment, the radius of curvature R5 of the object side of the third lens and the radius of curvature R6 of the image side of the third lens may satisfy |(R5+R6)/(R5-R6)|<25.

In one embodiment, the total effective focal length f of the optical imaging lens, the center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT5 of the fifth lens on the optical axis It can satisfy 5.0<f/(CT3+CT4+CT5)<7.0.

In one embodiment, the total effective focal length f of the optical imaging lens, the combined focal length f45 of the fourth lens and the fifth lens, and the combined focal length f67 of the sixth lens and the seventh lens may satisfy |f/f45|+|f/f67 |<1.

In one embodiment, the radius of curvature R16 of the image side of the eighth lens and the effective focal length f7 of the seventh lens may satisfy |R16/f7|<0.5.

In one embodiment, the radius of curvature R15 of the object side of the eighth lens and the combined focal length f67 of the sixth lens and the seventh lens may satisfy |R15/f67|<0.5.

In another aspect, the present application provides an optical imaging lens including, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. a sixth lens, a seventh lens, and an eighth lens. Wherein, the first lens may have a positive power, the object side may be a convex surface; the second lens may have a negative power, the object side may be a convex surface, the image side may be a concave surface; and the third lens has a positive power or a negative a power of a power; a fourth lens having a positive power or a negative power; a fifth lens having a positive power or a negative power; and a sixth lens having a positive power or a negative power, the object side being a convex surface; The seventh lens has a positive power or a negative power; the eighth lens has a positive power or a negative power, and the object side surface may be a convex surface, and the image side surface may be a concave surface. Wherein, the total effective focal length f of the optical imaging lens, the center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, and the center thickness CT5 of the fifth lens on the optical axis can satisfy 5.0< f / (CT3 + CT4 + CT5) < 7.0.

In still another aspect, the present application provides an optical imaging lens including, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. a sixth lens, a seventh lens, and an eighth lens. Wherein, the first lens may have a positive power, the object side may be a convex surface; the second lens may have a negative power, the object side may be a convex surface, the image side may be a concave surface; and the third lens has a positive power or a negative a power of a power; a fourth lens having a positive power or a negative power; a fifth lens having a positive power or a negative power; and a sixth lens having a positive power or a negative power, the object side being a convex surface; The seventh lens has a positive power or a negative power; the eighth lens has a positive power or a negative power, and the object side surface may be a convex surface, and the image side surface may be a concave surface. The radius of curvature R6 of the image side surface of the third lens and the radius of curvature R3 of the object side surface of the second lens may satisfy |R6/R3|<7.0.

In still another aspect, the present application provides an optical imaging lens including, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. a sixth lens, a seventh lens, and an eighth lens. Wherein, the first lens may have a positive power, the object side may be a convex surface; the second lens may have a negative power, the object side may be a convex surface, the image side may be a concave surface; and the third lens has a positive power or a negative a power of a power; a fourth lens having a positive power or a negative power; a fifth lens having a positive power or a negative power; and a sixth lens having a positive power or a negative power, the object side being a convex surface; The seventh lens has a positive power or a negative power; the eighth lens has a positive power or a negative power, and the object side surface may be a convex surface, and the image side surface may be a concave surface. Wherein the separation distance T23 of the second lens and the third lens on the optical axis, the separation distance T56 of the fifth lens and the sixth lens on the optical axis, and any adjacent two lenses of the first lens to the eighth lens are in the optical axis The sum of the separation distances ΣAT can satisfy 0.3<(T23+T56)/∑AT<1.0.

In still another aspect, the present application provides an optical imaging lens including, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. a sixth lens, a seventh lens, and an eighth lens. Wherein, the first lens may have a positive power, the object side may be a convex surface; the second lens may have a negative power, the object side may be a convex surface, the image side may be a concave surface; and the third lens has a positive power or a negative a power of a power; a fourth lens having a positive power or a negative power; a fifth lens having a positive power or a negative power; and a sixth lens having a positive power or a negative power, the object side being a convex surface; The seventh lens has a positive power or a negative power; the eighth lens has a positive power or a negative power, and the object side surface may be a convex surface, and the image side surface may be a concave surface. Wherein, the combined effective focal length f of the optical imaging lens and the combined focal length f678 of the sixth lens, the seventh lens and the eighth lens may satisfy -0.4<f/f678<0.

In still another aspect, the present application provides an optical imaging lens including, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. a sixth lens, a seventh lens, and an eighth lens. Wherein, the first lens may have a positive power, the object side may be a convex surface; the second lens may have a negative power, the object side may be a convex surface, the image side may be a concave surface; and the third lens has a positive power or a negative a power of a power; a fourth lens having a positive power or a negative power; a fifth lens having a positive power or a negative power; and a sixth lens having a positive power or a negative power, the object side being a convex surface; The seventh lens has a positive power or a negative power; the eighth lens has a positive power or a negative power, and the object side surface may be a convex surface, and the image side surface may be a concave surface. Wherein, the total effective focal length f of the optical imaging lens, the combined focal length f45 of the fourth lens and the fifth lens, and the combined focal length f67 of the sixth lens and the seventh lens may satisfy |f/f45|+|f/f67|<1.

In still another aspect, the present application provides an optical imaging lens including, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, and a fifth lens. a sixth lens, a seventh lens, and an eighth lens. Wherein, the first lens may have a positive power, the object side may be a convex surface; the second lens may have a negative power, the object side may be a convex surface, the image side may be a concave surface; and the third lens has a positive power or a negative a power of a power; a fourth lens having a positive power or a negative power; a fifth lens having a positive power or a negative power; and a sixth lens having a positive power or a negative power, the object side being a convex surface; The seventh lens has a positive power or a negative power; the eighth lens has a positive power or a negative power, and the object side surface may be a convex surface, and the image side surface may be a concave surface. Wherein, the radius of curvature R15 of the object side surface of the eighth lens and the combined focal length f67 of the sixth lens and the seventh lens may satisfy |R15/f67|<0.5.

The present application employs a plurality of (for example, eight) lenses, and the above-mentioned optical imaging lens is super-over by rationally distributing the power, the surface shape, the center thickness of each lens, and the on-axis spacing between the lenses. At least one beneficial effect such as thinness, miniaturization, large aperture, large viewing angle, high phase contrast, high image quality, low sensitivity, and the like.

DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the description of the appended claims. In the drawing:

1 is a schematic structural view of an optical imaging lens according to Embodiment 1 of the present application;

2A to 2D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Embodiment 1;

3 is a schematic structural view of an optical imaging lens according to Embodiment 2 of the present application;

4A to 4D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Embodiment 2.

FIG. 5 is a schematic structural view of an optical imaging lens according to Embodiment 3 of the present application;

6A to 6D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Embodiment 3.

FIG. 7 is a schematic structural view of an optical imaging lens according to Embodiment 4 of the present application;

8A to 8D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Example 4;

9 is a schematic structural view of an optical imaging lens according to Embodiment 5 of the present application;

10A to 10D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Example 5;

11 is a schematic structural view of an optical imaging lens according to Embodiment 6 of the present application;

12A to 12D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Example 6;

FIG. 13 is a schematic structural view of an optical imaging lens according to Embodiment 7 of the present application;

14A to 14D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Embodiment 7;

15 is a schematic structural view of an optical imaging lens according to Embodiment 8 of the present application;

16A to 16D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Embodiment 8;

17 is a schematic structural view of an optical imaging lens according to Embodiment 9 of the present application;

18A to 18D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Example 9;

19 is a schematic structural view of an optical imaging lens according to Embodiment 10 of the present application;

20A to 20D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Embodiment 10.

21 is a schematic structural view of an optical imaging lens according to Embodiment 11 of the present application;

22A to 22D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Example 11;

23 is a schematic structural view of an optical imaging lens according to Embodiment 12 of the present application;

24A to 24D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Embodiment 12.

25 is a schematic structural view of an optical imaging lens according to Embodiment 13 of the present application;

26A to 26D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Example 13;

FIG. 27 is a schematic structural view of an optical imaging lens according to Embodiment 14 of the present application;

28A to 28D respectively show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of the optical imaging lens of Example 14.

Detailed ways

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is only illustrative of the exemplary embodiments of the present application, and is not intended to limit the scope of the application. Throughout the specification, the same drawing reference numerals refer to the same elements. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in the present specification, the expressions of the first, second, third, etc. are used to distinguish one feature from another, and do not represent any limitation of the feature. Thus, the first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lens have been somewhat exaggerated for convenience of explanation. Specifically, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the spherical or aspherical shape shown in the drawings. The drawings are only examples and are not to scale.

As used herein, a paraxial region refers to a region near the optical axis. If the surface of the lens is convex and the position of the convex surface is not defined, it indicates that the surface of the lens is convex at least in the paraxial region; if the surface of the lens is concave and the position of the concave surface is not defined, it indicates that the surface of the lens is at least in the paraxial region. Concave. The surface closest to the object in each lens is referred to as the object side, and the surface of each lens closest to the image plane is referred to as the image side.

It is also to be understood that the terms "comprising", "including", "having", "include","," However, it is not excluded that one or more other features, elements, components, and/or combinations thereof are present. Moreover, when an expression such as "at least one of" appears after the list of listed features, the entire listed features are modified instead of the individual elements in the list. Further, when describing an embodiment of the present application, "may" is used to mean "one or more embodiments of the present application." Also, the term "exemplary" is intended to mean an example or an illustration.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. It should also be understood that terms (such as terms defined in commonly used dictionaries) should be interpreted as having meaning consistent with their meaning in the context of the related art, and will not be interpreted in an idealized or overly formal sense unless This is clearly defined in this article.

It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings.

The features, principles, and other aspects of the present application are described in detail below.

The optical imaging lens according to an exemplary embodiment of the present application may include, for example, eight lenses having powers, that is, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a Seven lenses and eighth lens. The eight lenses are sequentially arranged from the object side to the image side along the optical axis.

In an exemplary embodiment, the first lens may have a positive power and the object side may be a convex surface; the second lens may have a negative power, the object side may be a convex surface, and the image side may be a concave surface; the third lens has Positive or negative power; the fourth lens has positive or negative power; the fifth lens has positive or negative power; and the sixth lens has positive or negative power, The side surface may be a convex surface; the seventh lens has a positive power or a negative power; the eighth lens has a positive power or a negative power, and the object side may be a convex surface, and the image side may be a concave surface.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.0<f1/CT1<4.0, where f1 is the effective focal length of the first lens, and CT1 is the center thickness of the first lens on the optical axis. More specifically, f1 and CT1 can further satisfy 3.31 ≤ f1/CT1 ≤ 3.74. Reasonable control of the ratio of f1 and CT1 can effectively control the deflection of light, reduce the sensitivity of the imaging system, and reduce the size of the front end of the imaging system.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression f/EPD ≤ 1.9, where f is the total effective focal length of the optical imaging lens and the EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD can further satisfy 1.58 ≤ f / EPD ≤ 1.80. Satisfying the conditional expression f/EPD≤1.9 can effectively increase the amount of light per unit time, so that the optical imaging lens has a large aperture advantage, thereby enhancing the imaging effect in a weak light environment and improving the illumination of the edge field of view.

In an exemplary embodiment, the optical imaging lens of the present application can satisfy the conditional TTL/ImgH ≤ 1.6, wherein TTL is the distance from the center of the side of the first lens to the imaging plane of the optical imaging lens on the optical axis, and ImgH is The optical imaging lens has half the length of the effective pixel area on the imaging surface. More specifically, TTL and ImgH can further satisfy 1.50 ≤ TTL / ImgH ≤ 1.59. By controlling the ratio of TTL to ImgH, the longitudinal dimension of the imaging system is effectively compressed, ensuring compact size characteristics of the lens.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |R6/R3|<7.0, where R6 is the radius of curvature of the image side of the third lens, and R3 is the radius of curvature of the object side of the second lens. . More specifically, R6 and R3 may further satisfy 0.53 ≤ |R6/R3| ≤ 6.87. Reasonable control of the ratio of R6 and R3 allows the imaging system to better achieve optical path deflection.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression -2.1 < f2 / f1 < - 1.5, where f2 is the effective focal length of the second lens, and f1 is the effective focal length of the first lens. More specifically, f2 and f1 can further satisfy -2.07 ≤ f2 / f1 ≤ - 1.67. Reasonably arranging the effective focal lengths of the first lens and the second lens can effectively balance the spherical aberration, astigmatism and distortion of the imaging system, thereby improving the imaging quality of the imaging system.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.3<(T23+T56)/∑AT<1.0, where T23 is the separation distance of the second lens and the third lens on the optical axis, T56 For the distance between the fifth lens and the sixth lens on the optical axis, ΣAT is the sum of the separation distances of any two adjacent lenses on the optical axis among the lenses having the power. More specifically, T23, T56, and ΣAT may further satisfy 0.4 < (T23 + T56) / ∑ AT < 0.8, for example, 0.48 ≤ (T23 + T56) / ∑ AT ≤ 0.76. Properly arranging the air separation between the lenses in the imaging system can make the deflection of the light tend to be relaxed, thereby reducing the sensitivity of the imaging system.

It should be noted that in an imaging system having eight lenses, ΣAT is the sum of the separation distances on the optical axis of any two adjacent lenses of the first lens to the eighth lens, that is, in an imaging system having eight lenses. The middle middle is AT=T12+T23+T34+T45+T56+T67+T78, wherein T12 is the distance between the first lens and the second lens on the optical axis, and T23 is the second lens and the third lens on the optical axis. The separation distance, T34 is the separation distance of the third lens and the fourth lens on the optical axis, T45 is the separation distance of the fourth lens and the fifth lens on the optical axis, and T56 is the fifth lens and the sixth lens on the optical axis. The separation distance, T67 is the separation distance of the sixth lens and the seventh lens on the optical axis, and T78 is the separation distance of the seventh lens and the eighth lens on the optical axis.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression -0.4<f/f678<0, where f is the total effective focal length of the optical imaging lens, and f678 is the sixth lens, the seventh lens, and the eighth The combined focal length of the lens. More specifically, f and f678 may further satisfy -0.25 < f / f678 < - 0.15, for example, -0.19 ≤ f / f678 ≤ -0.11. Reasonably arranging the combined focal lengths of the sixth lens, the seventh lens and the eighth lens is advantageous for the lens to have a better imaging effect when performing macro shooting.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |(R5+R6)/(R5-R6)|<25, where R5 is the radius of curvature of the object side of the third lens, and R6 is the first The radius of curvature of the image side of the three lenses. More specifically, R5 and R6 may further satisfy 0.01 ≤ |(R5 + R6) / (R5 - R6) | ≤ 23.66. Reasonably distributing the radius of curvature of the side surface and the image side of the third lens can effectively improve the astigmatism, distortion and coma of the imaging system, thereby improving the imaging quality of the imaging system.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 5.0<f/(CT3+CT4+CT5)<7.0, where f is the total effective focal length of the optical imaging lens, and CT3 is the third lens in the light. The center thickness on the shaft, CT4 is the center thickness of the fourth lens on the optical axis, and CT5 is the center thickness of the fifth lens on the optical axis. More specifically, f, CT3, CT4, and CT5 can further satisfy 5.08 ≤ f / (CT3 + CT4 + CT5) ≤ 6.39. Reasonable control of the center thickness of each lens can effectively balance the coma and astigmatism of the imaging system.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |f/f45|+|f/f67|<1, where f is the total effective focal length of the optical imaging lens, and f45 is the fourth lens and the first lens The combined focal length of the five lenses, f67 is the combined focal length of the sixth lens and the seventh lens. More specifically, f, f45 and f67 may further satisfy 0.05 <|f/f45|+|f/f67|<0.85, for example, 0.11 ≤ |f/f45|+|f/f67|≤0.79. Reasonable distribution of the power of each lens can effectively balance the astigmatism, distortion and chromatic aberration of the imaging system, thereby improving the imaging quality of the imaging system.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |R16/f7|<0.5, where R16 is the radius of curvature of the image side of the eighth lens, and f7 is the effective focal length of the seventh lens. More specifically, R16 and f7 may further satisfy 0<|R16/f7|<0.3, for example, 0.01≤|R16/f7|≤0.28. Proper control of the ratio of R16 to f7 allows the imaging system to easily match commonly used chips.

In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |R15/f67|<0.5, where R15 is the radius of curvature of the object side of the eighth lens, and f67 is the combination of the sixth lens and the seventh lens focal length. More specifically, R15 and f67 can further satisfy 0.02 ≤ |R15/f67| ≤ 0.42. Reasonable control of the radius of curvature of the side of the eighth lens can slow the deflection angle of the light and reduce the sensitivity of the imaging system.

In an exemplary embodiment, the optical imaging lens described above may further include at least one aperture to enhance the imaging quality of the lens. The diaphragm may be disposed at any position as needed, for example, the diaphragm may be disposed between the object side and the first lens.

Alternatively, the above optical imaging lens may further include a filter for correcting the color deviation and/or a cover glass for protecting the photosensitive element on the imaging surface.

The optical imaging lens according to the above embodiment of the present application may employ a plurality of lenses, such as the eight sheets described above. By properly distributing the power of each lens, the surface shape, the center thickness of each lens, and the on-axis spacing between the lenses, the volume of the imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the imaging lens can be improved. The processability makes the optical imaging lens more advantageous for production processing and can be applied to portable electronic products. Meanwhile, the optical imaging lens through the above configuration also has advantageous effects such as a large aperture, a large viewing angle, high phase contrast, high image quality, low sensitivity, and the like.

In an embodiment of the present application, at least one of the mirror faces of each lens is an aspherical mirror. The aspherical lens is characterized by a continuous change in curvature from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, the aspherical lens has better curvature radius characteristics, and has the advantages of improving distortion and improving astigmatic aberration. With an aspherical lens, the aberrations that occur during imaging can be eliminated as much as possible, improving image quality.

However, those skilled in the art will appreciate that the various results and advantages described in this specification can be obtained without varying the number of lenses that make up the optical imaging lens without departing from the technical solutions claimed herein. For example, although eight lenses have been described as an example in the embodiment, the optical imaging lens is not limited to including eight lenses. The optical imaging lens can also include other numbers of lenses if desired.

A specific embodiment of an optical imaging lens applicable to the above embodiment will be further described below with reference to the accompanying drawings.

Example 1

An optical imaging lens according to Embodiment 1 of the present application will be described below with reference to FIGS. 1 through 2D. FIG. 1 is a block diagram showing the structure of an optical imaging lens according to Embodiment 1 of the present application.

As shown in FIG. 1, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a negative refractive power, the object side surface S7 is a concave surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative refractive power, the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 1 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 1, in which the unit of curvature radius and thickness are all millimeters (mm).

Table 1

As is clear from Table 1, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. In this embodiment, the face shape x of each aspherical lens can be defined by using, but not limited to, the following aspherical formula:

Where x is the distance of the aspherical surface at height h from the optical axis, and the distance from the aspherical vertex is high; c is the abaxial curvature of the aspherical surface, c=1/R (ie, the paraxial curvature c is the above table) 1 is the reciprocal of the radius of curvature R; k is the conic coefficient (given in Table 1); Ai is the correction coefficient of the a-th order of the aspherical surface. Table 2 below gives the higher order coefficient A ₄ , A ₆ , A ₈ , A ₁₀ , A ₁₂ , A ₁₄ , A ₁₆ , A ₁₈ and A _{20 which} can be used for each aspherical mirror surface S1-S16 in the embodiment 1. .

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.2193E-03 -3.2302E-02 1.8203E-01 -5.4629E-01 9.7519E-01 -1.0646E+00 6.9385E-01 -2.4783E-01 3.6791E-02 S2 -6.6076E-02 1.6998E-01 -2.4012E-01 8.3600E-02 3.0539E-01 -6.1541E-01 5.3590E-01 -2.3473E-01 4.2115E-02 S3 -1.2643E-01 3.4269E-01 -6.5891E-01 1.3658E+00 -2.8690E+00 4.7970E+00 -5.2062E+00 3.1628E+00 -8.0710E-01 S4 -1.1469E-01 9.1645E-02 5.8552E-01 -4.1110E+00 1.3312E+01 -2.5435E+01 2.9094E+01 -1.8447E+01 5.0332E+00 S5 -3.9947E-02 -1.8699E-01 1.3772E+00 -6.4965E+00 1.8046E+01 -3.1145E+01 3.2634E+01 -1.8933E+01 4.6640E+00 S6 5.4266E-02 -6.8332E-02 -6.6624E-02 2.0122E-01 -5.4430E-01 1.0901E+00 -1.2067E+00 6.9730E-01 -1.6286E-01 S7 8.8777E-03 1.9560E-01 -1.1697E+00 2.8555E+00 -4.0936E+00 3.6849E+00 -2.0341E+00 6.2830E-01 -8.3346E-02 S8 -1.1329E-01 9.4842E-01 -3.2187E+00 5.7993E+00 -6.3763E+00 4.4127E+00 -1.8646E+00 4.3781E-01 -4.3749E-02 S9 -1.3881E-01 1.0123E+00 -2.7639E+00 4.2356E+00 -4.0825E+00 2.5115E+00 -9.5076E-01 2.0107E-01 -1.8153E-02 S10 -9.7699E-02 2.1633E-01 -3.0350E-01 2.9076E-01 -2.0129E-01 9.8065E-02 -3.0886E-02 5.5114E-03 -4.1800E-04 S11 1.1883E-01 -3.1003E-01 4.6535E-01 -5.3690E-01 4.2687E-01 -2.2499E-01 7.3914E-02 -1.3476E-02 1.0313E-03 S12 1.6777E-02 -3.6805E-02 6.0047E-02 -5.5472E-02 2.8785E-02 -8.6276E-03 1.4633E-03 -1.2707E-04 4.1751E-06 S13 -9.1422E-03 3.5157E-02 -5.6961E-02 4.4249E-02 -1.9097E-02 4.9128E-03 -7.5178E-04 6.3082E-05 -2.2282E-06 S14 3.6327E-03 4.7385E-02 -8.6670E-02 6.1295E-02 -2.5200E-02 6.3987E-03 -9.7780E-04 8.2243E-05 -2.9426E-06 S15 -2.2958E-01 1.5359E-01 -7.5955E-02 2.9749E-02 -8.3341E-03 1.5516E-03 -1.8061E-04 1.1875E-05 -3.3700E-07 S16 -2.7121E-01 1.4588E-01 -6.8024E-02 2.1719E-02 -4.5675E-03 6.2513E-04 -5.4078E-05 2.7270E-06 -6.2700E-08

Table 2

Table 3 gives the total effective focal length f of the optical imaging lens of Example 1, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 4.03 3.01 -6.24 6.79 -176.14 -6.64 8.63 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value -12.82 -13.69 3.00 4.78 46.2 1.80

table 3

The optical imaging lens of Embodiment 1 satisfies:

F1/CT1=3.73, where f1 is the effective focal length of the first lens E1, and CT1 is the center thickness of the first lens E1 on the optical axis;

f / EPD = 1.80, where f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens;

TTL/ImgH=1.59, where TTL is the distance from the center of the object side surface S1 of the first lens E1 to the imaging plane S19 on the optical axis, and ImgH is half the diagonal length of the effective pixel area on the imaging plane S19;

|R6/R3|=0.53, where R6 is the radius of curvature of the image side surface S6 of the third lens E3, and R3 is the radius of curvature of the object side surface S3 of the second lens E2;

F2/f1=-2.07, where f2 is the effective focal length of the second lens E2, and f1 is the effective focal length of the first lens E1;

(T23 + T56) / Σ AT = 0.75, wherein T23 is the separation distance of the second lens E2 and the third lens E3 on the optical axis, and T56 is the separation distance of the fifth lens E5 and the sixth lens E6 on the optical axis, ΣAT is the sum of the separation distances of any two adjacent lenses of the first lens E1 to the eighth lens E8 on the optical axis;

f/f678=-0.11, where f is the total effective focal length of the optical imaging lens, and f678 is the combined focal length of the sixth lens E6, the seventh lens E7, and the eighth lens E8;

(R5+R6)/(R5-R6)|=2.17, where R5 is the radius of curvature of the object side surface S5 of the third lens E3, and R6 is the radius of curvature of the image side surface S6 of the third lens E3;

f / (CT3 + CT4 + CT5) = 5.28, where f is the total effective focal length of the optical imaging lens, CT3 is the center thickness of the third lens E3 on the optical axis, and CT4 is the center of the fourth lens E4 on the optical axis Thickness, CT5 is the center thickness of the fifth lens E5 on the optical axis;

|f/f45|+|f/f67|=0.79, where f is the total effective focal length of the optical imaging lens, f45 is the combined focal length of the fourth lens E4 and the fifth lens E5, and f67 is the sixth lens E6 and the seventh Combined focal length of lens E7;

|R16/f7|=0.12, where R16 is the radius of curvature of the image side surface S16 of the eighth lens E8, and f7 is the effective focal length of the seventh lens E7;

|R15/f67|=0.09, where R15 is the radius of curvature of the object side surface S15 of the eighth lens E8, and f67 is the combined focal length of the sixth lens E6 and the seventh lens E7.

In addition, FIG. 2A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 1, which indicates that light of different wavelengths is deviated from a focus point after the lens. 2B shows an astigmatism curve of the optical imaging lens of Embodiment 1, which shows meridional field curvature and sagittal image plane curvature. 2C shows a distortion curve of the optical imaging lens of Embodiment 1, which shows distortion magnitude values in the case of different viewing angles. 2D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 1, which indicates a deviation of different image heights on the imaging plane after the light passes through the lens. 2A to 2D, the optical imaging lens given in Embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens according to Embodiment 2 of the present application will be described below with reference to FIGS. 3 to 4D. In the present embodiment and the following embodiments, a description similar to Embodiment 1 will be omitted for the sake of brevity. FIG. 3 is a block diagram showing the structure of an optical imaging lens according to Embodiment 2 of the present application.

As shown in FIG. 3, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative refractive power, the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 4 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 2, in which the unit of curvature radius and thickness are all millimeters (mm).

Table 4

As is clear from Table 4, in the second embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 5 shows the high order coefficient which can be used for each aspherical mirror in Embodiment 2, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.1681E-03 -2.9063E-02 1.4893E-01 -3.9639E-01 6.2062E-01 -5.9169E-01 3.3608E-01 -1.0443E-01 1.3487E-02

S2 -4.4244E-02 1.0239E-01 -1.5734E-01 1.3465E-01 -3.6021E-02 -5.6866E-02 6.5907E-02 -2.8502E-02 4.6887E-03 S3 -9.2761E-02 1.7984E-01 -7.9146E-02 -5.2774E-01 1.8048E+00 -2.8581E+00 2.4919E+00 -1.1302E+00 2.0624E-01 S4 -8.7563E-02 -4.9310E-02 1.1215E+00 -5.3101E+00 1.4101E+01 -2.2867E+01 2.2410E+01 -1.2211E+01 2.8581E+00 S5 9.9372E-04 -5.5826E-01 3.3655E+00 -1.2809E+01 3.0205E+01 -4.4982E+01 4.1127E+01 -2.1024E+01 4.5990E+00 S6 8.6203E-02 -4.6805E-01 1.8056E+00 -4.9355E+00 8.3020E+00 -8.6038E+00 5.3801E+00 -1.8437E+00 2.6281E-01 S7 2.4516E-02 -5.4199E-03 -1.7383E-01 2.9435E-01 -2.3577E-01 1.2050E-01 -4.1578E-02 8.7716E-03 -8.6310E-04 S8 -9.6283E-02 6.8666E-01 -1.9849E+00 3.0640E+00 -2.9025E+00 1.7362E+00 -6.3486E-01 1.2901E-01 -1.1151E-02 S9 -1.0671E-01 7.0072E-01 -1.7268E+00 2.3717E+00 -2.0369E+00 1.1135E+00 -3.7454E-01 7.0460E-02 -5.6669E-03 S10 -6.3979E-02 1.2047E-01 -1.6603E-01 1.5813E-01 -1.0511E-01 4.7457E-02 -1.3583E-02 2.1859E-03 -1.4921E-04 S11 1.0744E-01 -2.4727E-01 3.2118E-01 -3.1837E-01 2.2040E-01 -1.0299E-01 3.0456E-02 -5.0436E-03 3.5213E-04 S12 2.8514E-02 -7.5992E-02 9.7132E-02 -6.4780E-02 2.2990E-02 -3.9784E-03 1.5101E-04 4.4983E-05 -4.5877E-06 S13 -4.1064E-04 5.1303E-03 -7.4894E-03 1.4367E-03 1.4019E-03 -7.6349E-04 1.5588E-04 -1.4765E-05 5.4247E-07 S14 -1.3709E-03 7.7098E-02 -1.1493E-01 7.6848E-02 -3.1007E-02 7.8889E-03 -1.2249E-03 1.0549E-04 -3.8605E-06 S15 -2.0706E-01 1.4833E-01 -8.1220E-02 3.2156E-02 -8.4540E-03 1.4300E-03 -1.4985E-04 8.8781E-06 -2.2816E-07 S16 -2.2841E-01 1.0710E-01 -3.9891E-02 7.9881E-03 -3.2252E-04 -1.8674E-04 3.8650E-05 -3.0639E-06 8.9857E-08

table 5

Table 6 gives the total effective focal length f of the optical imaging lens of Example 2, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 4.15 3.18 -6.28 8.06 196.34 -8.91 9.24 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value -11.60 -13.49 3.28 4.95 46.3 1.78

Table 6

4A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 2, which shows that light of different wavelengths is deviated from a focus point after the lens. 4B shows an astigmatism curve of the optical imaging lens of Embodiment 2, which shows meridional field curvature and sagittal image plane curvature. 4C shows a distortion curve of the optical imaging lens of Embodiment 2, which shows distortion magnitude values in the case of different viewing angles. 4D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 2, which shows deviations of different image heights on the imaging plane after the light passes through the lens. 4A to 4D, the optical imaging lens given in Embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens according to Embodiment 3 of the present application is described below with reference to Figs. 5 to 6D. FIG. 5 is a block diagram showing the structure of an optical imaging lens according to Embodiment 3 of the present application.

As shown in FIG. 5, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a convex surface. The fifth lens E5 has a negative refractive power, the object side surface S9 is a concave surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative refractive power, the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 7 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 3, wherein the units of the radius of curvature and the thickness are all in millimeters (mm).

Table 7

As is clear from Table 7, in the third embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 8 shows the high order term coefficients which can be used for the respective aspherical mirrors in Embodiment 3, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.3947E-03 -4.2555E-02 2.1682E-01 -5.7825E-01 9.0601E-01 -8.6342E-01 4.9039E-01 -1.5245E-01 1.9715E-02 S2 -4.3240E-02 7.2885E-02 1.2799E-02 -3.2135E-01 6.6692E-01 -7.1256E-01 4.2880E-01 -1.3745E-01 1.8220E-02 S3 -1.0251E-01 1.8664E-01 1.4044E-02 -8.1869E-01 2.1191E+00 -2.7780E+00 2.0135E+00 -7.3861E-01 1.0125E-01 S4 -1.0683E-01 9.2440E-02 2.4325E-01 -1.6249E+00 4.3521E+00 -6.7806E+00 6.4064E+00 -3.4607E+00 8.4970E-01 S5 -1.8514E-02 -3.7664E-01 2.3238E+00 -9.3720E+00 2.3245E+01 -3.6053E+01 3.4009E+01 -1.7803E+01 3.9646E+00 S6 7.6595E-02 -3.2310E-01 8.6668E-01 -1.8044E+00 2.1987E+00 -1.2968E+00 1.0810E-01 2.4934E-01 -8.7311E-02 S7 2.8856E-02 -1.9720E-02 -1.8617E-01 3.6893E-01 -3.5850E-01 2.4051E-01 -1.1436E-01 3.3399E-02 -4.3702E-03 S8 -1.0627E-01 7.4326E-01 -2.1311E+00 3.2784E+00 -3.1026E+00 1.8562E+00 -6.7884E-01 1.3788E-01 -1.1906E-02 S9 -1.0558E-01 7.2020E-01 -1.8425E+00 2.6168E+00 -2.3137E+00 1.2964E+00 -4.4521E-01 8.5251E-02 -6.9641E-03 S10 -5.6048E-02 1.0897E-01 -1.8069E-01 2.0548E-01 -1.5380E-01 7.4119E-02 -2.1921E-02 3.5901E-03 -2.4797E-04 S11 9.2715E-02 -1.9863E-01 2.3409E-01 -2.2379E-01 1.5595E-01 -7.5024E-02 2.2939E-02 -3.9042E-03 2.7771E-04 S12 1.8819E-02 -3.9540E-02 4.4199E-02 -2.5152E-02 6.0948E-03 2.2470E-04 -4.4048E-04 8.7074E-05 -5.6712E-06 S13 2.5889E-03 5.5948E-03 -1.3019E-02 6.1261E-03 -4.2155E-04 -3.6024E-04 1.0091E-04 -1.0223E-05 3.6428E-07 S14 -3.4410E-03 9.2149E-02 -1.4013E-01 9.6999E-02 -4.0605E-02 1.0732E-02 -1.7331E-03 1.5537E-04 -5.9193E-06 S15 -2.1925E-01 1.8362E-01 -1.2170E-01 5.5846E-02 -1.6410E-02 3.0343E-03 -3.4254E-04 2.1621E-05 -5.8629E-07 S16 -2.3821E-01 1.2253E-01 -5.2896E-02 1.4410E-02 -2.2417E-03 1.6752E-04 -9.7336E-07 -6.0151E-07 2.4619E-08

Table 8

Table 9 gives the total effective focal length f of the optical imaging lens of Example 3, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 4.12 3.12 -6.10 7.79 110.96 -8.04 8.97 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value -11.93 -13.09 3.22 4.95 46.7 1.75

Table 9

Fig. 6A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 3, which shows that light of different wavelengths is deviated from a focus point after the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of Embodiment 3, which shows meridional field curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of Embodiment 3, which shows distortion magnitude values in the case of different viewing angles. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 3, which shows deviations of different image heights on the imaging plane after the light passes through the lens. 6A to 6D, the optical imaging lens given in Embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens according to Embodiment 4 of the present application is described below with reference to FIGS. 7 to 8D. FIG. 7 is a block diagram showing the structure of an optical imaging lens according to Embodiment 4 of the present application.

As shown in FIG. 7 , an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a negative refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a positive refractive power, the object side surface S13 is a concave surface, and the image side surface S14 is a convex surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 10 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 4, in which the unit of curvature radius and thickness are both millimeters (mm).

Table 10

As is apparent from Table 10, in the fourth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 11 shows the high order coefficient which can be used for each aspherical mirror in Embodiment 4, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.5008E-03 -3.7415E-02 1.8749E-01 -5.0401E-01 8.0288E-01 -7.8077E-01 4.5259E-01 -1.4334E-01 1.8797E-02 S2 -4.2327E-02 6.4034E-02 5.9094E-02 -4.6349E-01 9.3257E-01 -1.0153E+00 6.3254E-01 -2.1162E-01 2.9463E-02 S3 -9.9364E-02 1.1576E-01 5.4013E-01 -2.9435E+00 7.2503E+00 -1.0365E+01 8.7278E+00 -3.9987E+00 7.6808E-01 S4 -1.1022E-01 1.7297E-01 -4.6228E-01 1.8583E+00 -5.9051E+00 1.1620E+01 -1.3294E+01 8.1004E+00 -2.0070E+00 S5 -3.9160E-02 -1.8049E-03 9.1087E-03 -6.9302E-01 2.5549E+00 -4.8454E+00 5.2446E+00 -3.0350E+00 7.3059E-01 S6 6.0089E-02 -4.3167E-02 -4.4359E-01 1.6587E+00 -3.5659E+00 4.8654E+00 -3.9949E+00 1.7999E+00 -3.4190E-01 S7 4.0110E-02 -3.5471E-02 -3.6166E-01 9.2314E-01 -1.1396E+00 8.8567E-01 -4.3911E-01 1.2557E-01 -1.5623E-02 S8 -5.5659E-02 5.0849E-01 -1.6205E+00 2.5300E+00 -2.3468E+00 1.3590E+00 -4.7937E-01 9.3793E-02 -7.7892E-03 S9 -9.3197E-02 6.2089E-01 -1.5242E+00 2.0669E+00 -1.7421E+00 9.2869E-01 -3.0250E-01 5.4712E-02 -4.2016E-03 S10 -7.9636E-02 1.5884E-01 -2.0255E-01 1.7667E-01 -1.0950E-01 4.6749E-02 -1.2701E-02 1.9369E-03 -1.2499E-04 S11 7.1171E-02 -1.5112E-01 1.7659E-01 -1.8040E-01 1.3828E-01 -7.3712E-02 2.4582E-02 -4.4638E-03 3.3296E-04 S12 1.4434E-02 -3.3489E-02 3.4924E-02 -1.5743E-02 -7.1248E-04 3.2328E-03 -1.1910E-03 1.8359E-04 -1.0584E-05 S13 -1.2669E-02 3.8677E-02 -4.5705E-02 2.2320E-02 -4.7071E-03 1.7387E-04 9.9041E-05 -1.6700E-05 8.3997E-07 S14 -9.5199E-03 1.5747E-01 -2.3006E-01 1.6074E-01 -6.8796E-02 1.8839E-02 -3.2004E-03 3.0631E-04 -1.2618E-05

S15 -2.5719E-01 2.5230E-01 -1.9397E-01 9.9999E-02 -3.2497E-02 6.6009E-03 -8.1547E-04 5.6176E-05 -1.6586E-06 S16 -2.6618E-01 1.5838E-01 -7.9511E-02 2.7114E-02 -6.0684E-03 8.8191E-04 -8.1105E-05 4.3560E-06 -1.0584E-07

Table 11

Table 12 gives the total effective focal length f of the optical imaging lens of Example 4, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 4.03 3.09 -5.71 8.68 78.65 -9.46 10.15 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value 181.99 -6.18 3.16 4.86 46.9 1.73

Table 12

Fig. 8A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 4, which shows that light of different wavelengths is deviated from the focus point after the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of Embodiment 4, which shows meridional field curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of Embodiment 4, which shows distortion magnitude values in the case of different viewing angles. Fig. 8D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 4, which shows deviations of different image heights on the imaging plane after the light passes through the lens. 8A to 8D, the optical imaging lens given in Embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens according to Embodiment 5 of the present application is described below with reference to FIGS. 9 to 10D. FIG. 9 is a block diagram showing the structure of an optical imaging lens according to Embodiment 5 of the present application.

As shown in FIG. 9, an optical imaging lens according to an exemplary embodiment of the present application includes, in order from an object side to an image side along an optical axis, a stop STO, a first lens E1, a second lens E2, and a third lens E3, Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a negative refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative refractive power, the object side surface S13 is a concave surface, and the image side surface S14 is a convex surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 13 shows the surface type, the radius of curvature, the thickness, the material, and the conical coefficient of each lens of the optical imaging lens of Example 5, wherein the units of the radius of curvature and the thickness are all in millimeters (mm).

Table 13

As is clear from Table 13, in the fifth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 14 shows the high order coefficient which can be used for each aspherical mirror surface in Embodiment 5, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 9.4619E-04 -3.1512E-02 1.6517E-01 -4.5556E-01 7.3397E-01 -7.1806E-01 4.1773E-01 -1.3286E-01 1.7534E-02 S2 -3.5251E-02 4.9346E-02 5.7758E-02 -4.0731E-01 7.9838E-01 -8.4803E-01 5.1445E-01 -1.6737E-01 2.2646E-02 S3 -9.8382E-02 2.5202E-01 -5.4253E-01 1.2310E+00 -2.2719E+00 2.9948E+00 -2.5732E+00 1.2888E+00 -2.8302E-01 S4 -9.9665E-02 1.4441E-01 -2.8616E-01 9.0081E-01 -3.0151E+00 6.7690E+00 -8.8155E+00 6.0270E+00 -1.6501E+00 S5 -4.2980E-02 3.7830E-02 -1.6984E-01 -4.4131E-01 2.4196E+00 -4.8458E+00 5.0717E+00 -2.6630E+00 5.4317E-01 S6 6.1277E-02 -1.7327E-02 -5.4305E-01 1.6276E+00 -3.1681E+00 4.2701E+00 -3.6235E+00 1.7353E+00 -3.5653E-01 S7 4.7029E-02 -8.2034E-02 -2.4762E-01 7.0224E-01 -8.1535E-01 5.7926E-01 -2.6702E-01 7.3360E-02 -9.0285E-03 S8 -2.8352E-02 3.7255E-01 -1.3281E+00 2.1447E+00 -1.9940E+00 1.1322E+00 -3.8490E-01 7.1648E-02 -5.6114E-03 S9 -9.1227E-02 6.1398E-01 -1.5306E+00 2.0993E+00 -1.7889E+00 9.6487E-01 -3.1827E-01 5.8359E-02 -4.5488E-03 S10 -9.7171E-02 2.1770E-01 -2.9819E-01 2.7073E-01 -1.7112E-01 7.4169E-02 -2.0544E-02 3.2107E-03 -2.1300E-04 S11 8.8311E-02 -2.4236E-01 3.7406E-01 -4.2901E-01 3.3500E-01 -1.7269E-01 5.4989E-02 -9.6092E-03 6.9800E-04 S12 1.0263E-02 -2.0741E-02 1.4571E-02 4.0471E-03 -1.4030E-02 9.0971E-03 -2.7584E-03 4.1210E-04 -2.4461E-05 S13 -3.3304E-02 1.1694E-01 -1.6837E-01 1.1639E-01 -4.5523E-02 1.0787E-02 -1.5465E-03 1.2391E-04 -4.2675E-06 S14 -9.2598E-03 1.7824E-01 -2.6076E-01 1.8223E-01 -7.7088E-02 2.0604E-02 -3.3837E-03 3.1096E-04 -1.2239E-05 S15 -2.4619E-01 2.2705E-01 -1.5409E-01 7.0610E-02 -2.0786E-02 3.8757E-03 -4.4358E-04 2.8525E-05 -7.9219E-07 S16 -2.6695E-01 1.5554E-01 -7.6142E-02 2.4480E-02 -4.9636E-03 6.2786E-04 -4.8558E-05 2.1701E-06 -4.5966E-08

Table 14

Table 15 gives the total effective focal length f of the optical imaging lens of Example 5, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 3.97 3.07 -5.67 8.08 8724.88 -10.26 10.81 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value -55.68 -7.60 3.10 4.78 46.5 1.71

Table 15

Fig. 10A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 5, which shows that light of different wavelengths is deviated from a focus point after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of Embodiment 5, which shows meridional field curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of Embodiment 5, which shows the distortion magnitude value in the case of different viewing angles. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 5, which shows deviations of different image heights on the imaging plane after the light passes through the lens. 10A to 10D, the optical imaging lens given in Embodiment 5 can achieve good image quality.

Example 6

An optical imaging lens according to Embodiment 6 of the present application is described below with reference to FIGS. 11 to 12D. Fig. 11 is a view showing the configuration of an optical imaging lens according to Embodiment 6 of the present application.

As shown in FIG. 11 , an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a negative refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a negative refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The seventh lens E7 has a positive refractive power, and the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 16 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 6, wherein the units of the radius of curvature and the thickness are each mm (mm).

Table 16

As is clear from Table 16, in the sixth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 17 shows the high order coefficient which can be used for each aspherical mirror surface in Embodiment 6, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 6.9800E-04 -1.8341E-02 6.8953E-02 -1.5950E-01 2.3073E-01 -2.1492E-01 1.2290E-01 -3.9309E-02 5.2527E-03 S2 -2.8108E-02 3.1318E-02 1.7368E-02 -1.7192E-01 3.2551E-01 -3.2983E-01 1.9017E-01 -5.8635E-02 7.4780E-03 S3 -7.8047E-02 1.5565E-01 -1.2911E-01 -2.2978E-01 1.2978E+00 -2.6477E+00 2.9099E+00 -1.6792E+00 3.9912E-01 S4 -8.9199E-02 1.8311E-01 -6.1432E-01 2.1196E+00 -5.4959E+00 9.5342E+00 -1.0238E+01 6.1003E+00 -1.5228E+00 S5 -3.8302E-02 1.5475E-01 -1.1736E+00 3.8118E+00 -8.3908E+00 1.2298E+01 -1.1499E+01 6.1904E+00 -1.4467E+00 S6 2.5799E-03 4.0342E-02 -6.8528E-01 1.8596E+00 -3.1717E+00 3.6317E+00 -2.6740E+00 1.1495E+00 -2.1781E-01 S7 4.2819E-02 -9.3304E-02 -1.4696E-01 4.8669E-01 -5.7501E-01 3.9986E-01 -1.7156E-01 4.1870E-02 -4.4458E-03 S8 3.5023E-02 -8.7641E-02 -3.1156E-03 2.0919E-02 9.0297E-02 -1.4828E-01 9.3536E-02 -2.7318E-02 3.0521E-03 S9 -1.6817E-02 6.0225E-02 -6.1121E-02 -2.5783E-02 8.6696E-02 -7.3721E-02 3.2566E-02 -7.4793E-03 6.9849E-04 S10 -6.2935E-02 3.3752E-02 7.6538E-02 -1.4906E-01 1.1948E-01 -5.3255E-02 1.3831E-02 -1.9787E-03 1.2173E-04 S11 3.8881E-02 -4.7932E-02 2.5195E-02 -2.8230E-02 2.4679E-02 -1.6400E-02 6.9043E-03 -1.4907E-03 1.2479E-04 S12 3.9722E-03 -3.6121E-03 1.1755E-02 -1.3332E-02 2.9051E-03 1.3828E-03 -8.1127E-04 1.4984E-04 -9.7297E-06 S13 -2.7645E-02 7.2171E-02 -1.2535E-01 8.7751E-02 -3.3215E-02 7.5080E-03 -1.0211E-03 7.7440E-05 -2.5225E-06 S14 -3.1117E-03 1.4487E-01 -2.0718E-01 1.3744E-01 -5.4308E-02 1.3408E-02 -2.0206E-03 1.6974E-04 -6.0928E-06 S15 -2.8465E-01 2.4841E-01 -1.2480E-01 4.0408E-02 -8.8973E-03 1.3522E-03 -1.3698E-04 8.3227E-06 -2.2849E-07 S16 -2.8754E-01 1.6987E-01 -7.7242E-02 2.1471E-02 -3.3545E-03 2.3986E-04 2.0774E-06 -1.3046E-06 5.2666E-08

Table 17

Table 18 shows the total effective focal length f of the optical imaging lens of Example 6, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 3.96 3.20 -5.84 27.73 -129.87 75.14 -15.55 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value 5.38 -5.42 3.11 4.77 44.2 1.70

Table 18

Fig. 12A shows an axial chromatic aberration curve of the optical imaging lens of Example 6, which shows that light of different wavelengths is deviated from the focus point after the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of Example 6, which shows meridional field curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of Embodiment 6, which shows the distortion magnitude value in the case of different viewing angles. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 6, which shows the deviation of different image heights on the imaging plane after the light passes through the lens. 12A to 12D, the optical imaging lens given in Embodiment 6 can achieve good imaging quality.

Example 7

An optical imaging lens according to Embodiment 7 of the present application is described below with reference to FIGS. 13 to 14D. Fig. 13 is a view showing the configuration of an optical imaging lens according to Embodiment 7 of the present application.

As shown in FIG. 13 , an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a negative refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The seventh lens E7 has a positive refractive power, and the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 19 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 7, wherein the units of the radius of curvature and the thickness are each mm (mm).

Table 19

As is clear from Table 19, in the seventh embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 20 shows the high order term coefficients which can be used for the respective aspherical mirrors in Embodiment 7, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 3.8789E-04 -1.3335E-02 4.7224E-02 -1.0500E-01 1.4722E-01 -1.3276E-01 7.2996E-02 -2.2248E-02 2.8067E-03 S2 -2.3394E-02 2.1173E-02 2.8480E-02 -1.5445E-01 2.5996E-01 -2.4341E-01 1.3137E-01 -3.8128E-02 4.5903E-03 S3 -7.2952E-02 1.3781E-01 -1.2710E-01 -3.5501E-02 4.7534E-01 -9.5745E-01 9.8147E-01 -5.1828E-01 1.1174E-01 S4 -9.2168E-02 2.7240E-01 -1.2384E+00 4.5139E+00 -1.0920E+01 1.6838E+01 -1.5840E+01 8.2617E+00 -1.8203E+00 S5 -4.2726E-02 1.3493E-01 -7.3095E-01 1.9806E+00 -4.0346E+00 5.7490E+00 -5.2992E+00 2.7996E+00 -6.3363E-01 S6 -5.0129E-02 1.7975E-01 -8.0157E-01 1.7929E+00 -2.8637E+00 3.2000E+00 -2.3107E+00 9.6264E-01 -1.7416E-01 S7 3.8278E-02 -8.0642E-02 -1.1555E-01 3.7194E-01 -4.2811E-01 2.9268E-01 -1.2353E-01 2.9475E-02 -3.0370E-03 S8 3.9966E-02 -1.0964E-01 8.3759E-02 -9.9262E-02 1.5555E-01 -1.4480E-01 7.3436E-02 -1.9041E-02 1.9719E-03

S9 -1.3562E-02 4.5100E-02 -3.0499E-02 -4.2948E-02 7.6650E-02 -5.4237E-02 2.1215E-02 -4.4438E-03 3.8545E-04 S10 -6.1212E-02 4.4783E-02 3.4779E-02 -8.6846E-02 6.9318E-02 -2.9512E-02 7.1811E-03 -9.4908E-04 5.3305E-05 S11 2.8820E-02 -2.8090E-02 6.3891E-03 -6.0007E-03 4.0662E-03 -2.8873E-03 1.4385E-03 -3.3359E-04 2.7937E-05 S12 4.3210E-03 -3.0185E-03 9.5792E-03 -1.0441E-02 2.3530E-03 8.1574E-04 -4.9080E-04 8.7273E-05 -5.4033E-06 S13 -2.5111E-02 5.9105E-02 -9.5846E-02 6.2251E-02 -2.1820E-02 4.5617E-03 -5.7296E-04 4.0064E-05 -1.2011E-06 S14 -4.7629E-04 1.1567E-01 -1.5494E-01 9.5455E-02 -3.4957E-02 7.9900E-03 -1.1140E-03 8.6560E-05 -2.8744E-06 S15 -2.6890E-01 2.2953E-01 -1.1352E-01 3.6359E-02 -7.9285E-03 1.1850E-03 -1.1644E-04 6.7557E-06 -1.7472E-07 S16 -2.6289E-01 1.4883E-01 -6.5059E-02 1.8034E-02 -3.0640E-03 3.0964E-04 -1.7424E-05 4.7321E-07 -4.6787E-09

Table 20

Table 21 gives the total effective focal length f of the optical imaging lens of Example 7, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 4.07 3.30 -5.93 26.73 312.62 1900.99 -18.80 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value 6.29 -6.18 3.21 4.93 44.9 1.68

Table 21

Fig. 14A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 7, which indicates that light of different wavelengths is deviated from a focus point after the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens of Embodiment 7, which shows meridional field curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens of Embodiment 7, which shows the distortion magnitude value in the case of different viewing angles. Fig. 14D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 7, which shows the deviation of the different image heights on the imaging plane after the light passes through the lens. 14A to 14D, the optical imaging lens given in Embodiment 7 can achieve good imaging quality.

Example 8

An optical imaging lens according to Embodiment 8 of the present application is described below with reference to FIGS. 15 to 16D. Fig. 15 is a view showing the configuration of an optical imaging lens according to Embodiment 8 of the present application.

As shown in FIG. 15, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a negative refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a negative refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The seventh lens E7 has a positive refractive power, and the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 22 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 8, wherein the units of the radius of curvature and the thickness are each mm (mm).

Table 22

As is clear from Table 22, in the eighth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 23 shows the high order term coefficients which can be used for the respective aspherical mirrors in Embodiment 8, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.0528E-03 -1.5738E-02 5.2432E-02 -1.1525E-01 1.6206E-01 -1.4541E-01 7.8910E-02 -2.3528E-02 2.8887E-03 S2 -2.1228E-02 2.3068E-02 2.0134E-02 -1.3808E-01 2.3993E-01 -2.2511E-01 1.1985E-01 -3.3966E-02 3.9695E-03 S3 -7.1800E-02 1.5713E-01 -2.6206E-01 3.9149E-01 -3.5514E-01 7.6154E-02 1.7860E-01 -1.6505E-01 4.4694E-02 S4 -8.8491E-02 2.5971E-01 -1.1721E+00 4.1808E+00 -9.8710E+00 1.4853E+01 -1.3643E+01 6.9477E+00 -1.4937E+00 S5 -3.4402E-02 8.1637E-02 -4.6816E-01 1.1779E+00 -2.6466E+00 4.3653E+00 -4.5648E+00 2.6400E+00 -6.3369E-01 S6 -1.8120E-01 6.6603E-01 -2.1753E+00 4.4924E+00 -6.5079E+00 6.4896E+00 -4.2147E+00 1.6065E+00 -2.7124E-01 S7 3.9052E-02 -8.3879E-02 -1.3917E-01 4.3869E-01 -5.0622E-01 3.4579E-01 -1.4579E-01 3.4842E-02 -3.6013E-03 S8 2.2058E-02 -2.7402E-02 -1.0405E-01 1.6414E-01 -7.5728E-02 -1.7541E-02 3.0471E-02 -1.0801E-02 1.2767E-03 S9 -2.1433E-02 6.0187E-02 -3.6986E-02 -6.8700E-02 1.2212E-01 -8.7838E-02 3.4506E-02 -7.2277E-03 6.2922E-04 S10 -5.1775E-02 9.5574E-03 1.0604E-01 -1.8525E-01 1.5408E-01 -7.3406E-02 2.0527E-02 -3.1546E-03 2.0663E-04 S11 3.2585E-02 -4.4753E-02 3.4293E-02 -2.9395E-02 1.5744E-02 -6.3552E-03 1.9697E-03 -3.5776E-04 2.6351E-05 S12 6.1425E-03 -6.9331E-03 1.3672E-02 -1.5373E-02 5.9687E-03 -6.6573E-04 -1.4935E-04 4.5529E-05 -3.2838E-06 S13 -2.8047E-02 6.7919E-02 -1.1277E-01 7.6325E-02 -2.8178E-02 6.2671E-03 -8.4564E-04 6.4131E-05 -2.1037E-06 S14 -4.8535E-03 1.1294E-01 -1.5393E-01 9.6740E-02 -3.5988E-02 8.3080E-03 -1.1638E-03 9.0413E-05 -2.9858E-06 S15 -2.6435E-01 2.1713E-01 -1.0412E-01 3.1910E-02 -6.4030E-03 8.3682E-04 -6.8508E-05 3.1891E-06 -6.4592E-08 S16 -2.6398E-01 1.4549E-01 -6.2801E-02 1.6925E-02 -2.6183E-03 2.0028E-04 -2.3829E-06 -6.0751E-07 2.7082E-08

Table 23

Table 24 gives the total effective focal length f of the optical imaging lens of Example 8, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 4.09 3.29 -5.65 -52.09 14.82 -531.03 -21.78 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value 8.52 -8.46 3.21 4.94 46.0 1.66

Table 24

Fig. 16A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 8, which indicates that light of different wavelengths is deviated from a focus point after the lens. Fig. 16B shows an astigmatism curve of the optical imaging lens of Embodiment 8, which shows meridional field curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the optical imaging lens of Embodiment 8, which shows distortion magnitude values in the case of different viewing angles. Fig. 16D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 8, which shows the deviation of the different image heights on the imaging plane after the light passes through the lens. 16A to 16D, the optical imaging lens given in Embodiment 8 can achieve good imaging quality.

Example 9

An optical imaging lens according to Embodiment 9 of the present application is described below with reference to FIGS. 17 to 18D. Fig. 17 is a view showing the configuration of an optical imaging lens according to Embodiment 9 of the present application.

As shown in FIG. 17, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a negative refractive power, the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive refractive power, and the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface. The sixth lens E6 has a negative refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The seventh lens E7 has a positive refractive power, and the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 25 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 9, in which the unit of curvature radius and thickness are both millimeters (mm).

Table 25

As is clear from Table 25, in the ninth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 26 shows the high order coefficient which can be used for each aspherical mirror surface in Embodiment 9, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -7.5263E-04 -8.8045E-03 3.8922E-02 -1.0363E-01 1.6036E-01 -1.4982E-01 8.2208E-02 -2.4405E-02 2.9687E-03 S2 -1.9170E-02 2.0348E-02 2.4147E-02 -1.2962E-01 2.0427E-01 -1.7433E-01 8.3527E-02 -2.0852E-02 2.0746E-03 S3 -7.4482E-02 1.8715E-01 -4.2567E-01 9.4690E-01 -1.4828E+00 1.4460E+00 -7.9372E-01 2.0409E-01 -1.2619E-02 S4 -8.5624E-02 1.9909E-01 -7.5081E-01 2.6022E+00 -6.2293E+00 9.5787E+00 -8.9746E+00 4.6431E+00 -1.0075E+00 S5 -2.8638E-02 5.1248E-02 -4.9496E-01 1.5086E+00 -3.5869E+00 5.7733E+00 -5.8379E+00 3.2993E+00 -7.7986E-01 S6 -1.6048E-01 6.5348E-01 -2.3802E+00 5.3343E+00 -8.2663E+00 8.6008E+00 -5.7285E+00 2.2259E+00 -3.8313E-01 S9 2.5718E-02 -8.8811E-02 -1.2483E-01 5.1441E-01 -7.8928E-01 7.2568E-01 -3.9753E-01 1.1810E-01 -1.4646E-02 S10 3.5728E-02 -1.5298E-01 2.7774E-01 -4.9526E-01 6.5841E-01 -5.4404E-01 2.6020E-01 -6.5493E-02 6.6784E-03 S11 3.5078E-02 -2.1166E-01 5.6920E-01 -9.2305E-01 9.0136E-01 -5.3967E-01 1.9391E-01 -3.8176E-02 3.1477E-03 S10 3.0206E-02 -2.2853E-01 4.8386E-01 -5.8079E-01 4.3076E-01 -1.9709E-01 5.3968E-02 -8.1151E-03 5.1624E-04 S11 3.8667E-02 -5.6925E-02 5.0136E-02 -3.8590E-02 1.6852E-02 -4.4740E-03 8.3283E-04 -1.0572E-04 6.4202E-06 S12 9.1003E-03 -8.2587E-03 1.7522E-02 -2.1661E-02 1.0050E-02 -2.0051E-03 7.8346E-05 2.7572E-05 -2.8453E-06 S13 -3.0086E-02 7.4056E-02 -1.2841E-01 8.9686E-02 -3.4106E-02 7.8071E-03 -1.0835E-03 8.4494E-05 -2.8497E-06 S14 -9.0168E-03 1.2118E-01 -1.7166E-01 1.1272E-01 -4.3757E-02 1.0513E-02 -1.5291E-03 1.2309E-04 -4.2032E-06

Table 26

Table 27 gives the total effective focal length f of the optical imaging lens of Example 9, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 4.06 3.28 -5.61 -87.09 19.15 85.12 -19.43 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value 7.15 -7.02 3.18 4.90 46.4 1.64

Table 27

Fig. 18A shows an axial chromatic aberration curve of the optical imaging lens of Example 9, which shows that light of different wavelengths is deviated from the focus point after the lens. Fig. 18B shows an astigmatism curve of the optical imaging lens of Example 9, which shows meridional field curvature and sagittal image plane curvature. Fig. 18C shows a distortion curve of the optical imaging lens of Embodiment 9, which shows the distortion magnitude value in the case of different viewing angles. Fig. 18D shows a magnification chromatic aberration curve of the optical imaging lens of Example 9, which shows the deviation of the different image heights on the imaging plane after the light passes through the lens. 18A to 18D, the optical imaging lens given in Embodiment 9 can achieve good imaging quality.

Example 10

An optical imaging lens according to Embodiment 10 of the present application is described below with reference to FIGS. 19 to 20D. Fig. 19 is a view showing the configuration of an optical imaging lens according to Embodiment 10 of the present application.

As shown in FIG. 19, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a positive refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive refractive power, and the object side surface S9 is a concave surface, and the image side surface S10 is a convex surface. The sixth lens E6 has a negative refractive power, the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The seventh lens E7 has a positive refractive power, and the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 28 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 10, in which the unit of the radius of curvature and the thickness are each mm (mm).

Table 28

As is clear from Table 28, in the tenth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 29 shows the high order coefficient which can be used for each aspherical mirror surface in Embodiment 10, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -5.0750E-03 1.5315E-02 -4.0932E-02 4.6528E-02 -9.0770E-03 -3.4699E-02 3.6677E-02 -1.4980E-02 2.1927E-03

S2 -2.1842E-02 2.3226E-02 4.0081E-02 -1.9300E-01 3.1205E-01 -2.7924E-01 1.4301E-01 -3.9048E-02 4.3877E-03 S3 -8.2533E-02 2.1859E-01 -4.9225E-01 1.0335E+00 -1.4874E+00 1.2542E+00 -4.8597E-01 -1.4703E-03 3.9351E-02 S4 -9.8078E-02 3.0326E-01 -1.3727E+00 5.0059E+00 -1.2094E+01 1.8561E+01 -1.7325E+01 8.9382E+00 -1.9404E+00 S5 -3.9260E-02 8.9069E-02 -7.2455E-01 2.4229E+00 -5.7016E+00 8.7405E+00 -8.3184E+00 4.4454E+00 -1.0086E+00 S6 -1.0935E-01 3.5632E-01 -1.3038E+00 2.8390E+00 -4.3812E+00 4.5453E+00 -2.9932E+00 1.1516E+00 -1.9808E-01 S7 2.7710E-02 -1.0553E-01 -7.7933E-02 5.4254E-01 -1.0468E+00 1.1040E+00 -6.5001E-01 1.9994E-01 -2.5132E-02 S8 4.1770E-02 -1.7598E-01 3.1062E-01 -5.1029E-01 6.2744E-01 -4.9238E-01 2.2954E-01 -5.7393E-02 5.8843E-03 S9 2.4717E-02 -1.4530E-01 4.1127E-01 -7.1977E-01 7.4161E-01 -4.6436E-01 1.7480E-01 -3.6249E-02 3.1678E-03 S10 9.3282E-03 -1.5679E-01 3.6770E-01 -4.6929E-01 3.6574E-01 -1.7491E-01 5.0020E-02 -7.8713E-03 5.2589E-04 S11 3.0959E-02 -4.5482E-02 5.8608E-02 -7.1981E-02 4.7755E-02 -1.9013E-02 4.7009E-03 -6.5988E-04 3.9615E-05 S12 -1.8099E-03 3.4297E-03 3.2332E-02 -5.6261E-02 3.6626E-02 -1.2732E-02 2.5208E-03 -2.6978E-04 1.2252E-05 S13 -2.5968E-02 6.3841E-02 -1.3034E-01 9.8441E-02 -3.9768E-02 9.6275E-03 -1.4124E-03 1.1649E-04 -4.1582E-06 S14 1.3723E-02 8.7406E-02 -1.5630E-01 1.1381E-01 -4.7749E-02 1.2280E-02 -1.9027E-03 1.6270E-04 -5.8895E-06

Table 29

Table 30 gives the total effective focal length f of the optical imaging lens of Example 10, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 3.98 3.22 -5.56 152.28 29.87 73.93 -15.95 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value 6.85 -7.13 3.12 4.81 46.8 1.60

Table 30

Fig. 20A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 10, which shows that light of different wavelengths is deviated from the focus point after the lens. Fig. 20B shows an astigmatism curve of the optical imaging lens of Embodiment 10, which shows meridional field curvature and sagittal image plane curvature. Fig. 20C shows a distortion curve of the optical imaging lens of Embodiment 10, which shows the distortion magnitude value in the case of different viewing angles. Fig. 20D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 10, which shows deviations of different image heights on the imaging plane after the light passes through the lens. 20A to 20D, the optical imaging lens given in Embodiment 10 can achieve good imaging quality.

Example 11

An optical imaging lens according to Embodiment 11 of the present application is described below with reference to FIGS. 21 to 22D. Fig. 21 is a view showing the configuration of an optical imaging lens according to Embodiment 11 of the present application.

As shown in FIG. 21, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface. The fourth lens E4 has a negative refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a convex surface. The sixth lens E6 has a negative refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a concave surface. The seventh lens E7 has a positive refractive power, and the object side surface S13 is a convex surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 31 shows the surface type, the radius of curvature, the thickness, the material, and the conical coefficient of each lens of the optical imaging lens of Example 11, wherein the units of the radius of curvature and the thickness are each mm (mm).

Table 31

As is clear from Table 31, in the eleventh embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 32 shows the high order coefficient which can be used for each aspherical mirror surface in Embodiment 11, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 -7.3590E-03 2.0824E-02 -5.4444E-02 6.5787E-02 -2.7578E-02 -2.1772E-02 2.9999E-02 -1.2748E-02 1.8523E-03 S2 -2.1069E-02 3.0164E-02 3.3625E-02 -2.1329E-01 3.7079E-01 -3.4731E-01 1.8524E-01 -5.2862E-02 6.2653E-03 S3 -9.8523E-02 4.1549E-01 -1.6564E+00 5.1647E+00 -1.0593E+01 1.3767E+01 -1.0898E+01 4.7936E+00 -8.9770E-01 S4 -9.2897E-02 2.1983E-01 -6.0841E-01 1.5004E+00 -2.6367E+00 3.0052E+00 -1.9778E+00 6.0042E-01 -2.2796E-02 S5 -2.8567E-02 -3.1926E-02 -1.2742E-01 4.5286E-01 -1.5724E+00 3.3479E+00 -4.1164E+00 2.6835E+00 -7.1009E-01 S6 -3.6057E-02 1.8156E-01 -9.2157E-01 2.1410E+00 -3.4033E+00 3.5515E+00 -2.3292E+00 8.9940E-01 -1.5764E-01 S7 -1.3714E-02 7.1829E-02 -6.1806E-01 1.7108E+00 -2.6992E+00 2.5595E+00 -1.4164E+00 4.2048E-01 -5.1812E-02 S8 5.1992E-02 -2.0741E-01 3.1863E-01 -4.2033E-01 4.4163E-01 -3.1836E-01 1.4321E-01 -3.5520E-02 3.6536E-03 S9 1.7045E-02 -8.5506E-02 2.3203E-01 -4.3973E-01 4.6613E-01 -2.9372E-01 1.1206E-01 -2.3927E-02 2.1802E-03 S10 -2.1475E-03 -1.0235E-01 2.6438E-01 -3.5665E-01 2.8844E-01 -1.4092E-01 4.0720E-02 -6.4270E-03 4.2846E-04 S11 -1.0933E-02 1.0197E-01 -1.7227E-01 1.3850E-01 -7.3046E-02 2.5109E-02 -5.2104E-03 5.8445E-04 -2.7092E-05 S12 -5.3607E-02 1.7320E-01 -1.9793E-01 1.2002E-01 -4.7653E-02 1.2944E-02 -2.3453E-03 2.5664E-04 -1.2743E-05 S13 -2.4918E-02 5.5121E-02 -1.3411E-01 1.0553E-01 -4.2607E-02 1.0071E-02 -1.4220E-03 1.1207E-04 -3.8206E-06 S14 6.0549E-02 -5.6069E-03 -7.7037E-02 7.3731E-02 -3.4810E-02 9.6286E-03 -1.5747E-03 1.4075E-04 -5.2935E-06 S15 -2.9839E-01 2.6440E-01 -1.3895E-01 4.8135E-02 -1.1179E-02 1.7089E-03 -1.6344E-04 8.7843E-06 -2.0057E-07 S16 -3.5135E-01 2.3773E-01 -1.2798E-01 4.5026E-02 -9.8402E-03 1.2994E-03 -9.7766E-05 3.6045E-06 -4.1243E-08

Table 32

Table 33 gives the total effective focal length f of the optical imaging lens of Example 11, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 3.91 3.17 -5.43 21.20 -83.13 39.81 -22.44 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value 7.68 -6.64 3.08 4.72 47.5 1.58

Table 33

Fig. 22A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 11, which indicates that light of different wavelengths is deviated from a focus point after the lens. Fig. 22B shows an astigmatism curve of the optical imaging lens of Example 11, which shows meridional field curvature and sagittal image plane curvature. Fig. 22C shows a distortion curve of the optical imaging lens of Embodiment 11, which shows distortion magnitude values in the case of different viewing angles. Fig. 22D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 11, which shows the deviation of the different image heights on the imaging plane after the light passes through the lens. 22A to 22D, the optical imaging lens given in Embodiment 11 can achieve good imaging quality.

Example 12

An optical imaging lens according to Embodiment 12 of the present application is described below with reference to FIGS. 23 to 24D. Fig. 23 is a view showing the configuration of an optical imaging lens according to Embodiment 12 of the present application.

As shown in FIG. 23, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, and a third lens E3, along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a convex surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a negative refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a negative refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative refractive power, the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 34 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 12, in which the unit of the radius of curvature and the thickness are each mm (mm).

Table 34

As is clear from Table 34, in the twelfth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 35 shows the high order coefficient which can be used for each aspherical mirror surface in Embodiment 12, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 2.5869E-03 -3.3815E-02 1.2711E-01 -2.8333E-01 3.8222E-01 -3.2648E-01 1.7152E-01 -5.1422E-02 6.6766E-03 S2 1.4700E-02 1.5096E-02 -4.9171E-02 2.9210E-02 2.4175E-02 -5.6692E-02 4.1988E-02 -1.4638E-02 2.0653E-03 S3 -4.5622E-02 1.1778E-01 -1.4074E-01 -2.3469E-01 1.5578E+00 -3.2136E+00 3.4225E+00 -1.8750E+00 4.1888E-01 S4 -7.9161E-02 1.0877E-01 -4.4703E-01 2.1555E+00 -7.2786E+00 1.4971E+01 -1.7944E+01 1.1514E+01 -3.0437E+00 S5 -4.5585E-02 9.0283E-02 -5.6187E-02 -1.5932E+00 5.7291E+00 -9.9070E+00 9.5032E+00 -4.8130E+00 1.0104E+00 S6 2.8175E-02 1.6615E-01 -8.4140E-01 1.6811E+00 -2.6056E+00 3.2245E+00 -2.7417E+00 1.3606E+00 -2.8982E-01 S7 4.6033E-02 -1.0441E-01 -9.3253E-02 3.5330E-01 -3.8878E-01 2.4074E-01 -8.9891E-02 1.8960E-02 -1.7622E-03 S8 4.8424E-02 -3.0988E-02 -3.0304E-01 5.6213E-01 -4.4397E-01 1.7423E-01 -2.5050E-02 -3.1629E-03 9.8961E-04 S9 -6.9481E-02 4.3053E-01 -9.9966E-01 1.2834E+00 -1.0495E+00 5.5638E-01 -1.8321E-01 3.3775E-02 -2.6501E-03 S10 -1.1311E-01 2.3566E-01 -2.6167E-01 1.9141E-01 -1.1064E-01 5.1183E-02 -1.6221E-02 2.9089E-03 -2.1760E-04 S11 7.1922E-02 -1.8662E-01 2.9339E-01 -3.7030E-01 3.2024E-01 -1.7929E-01 6.0483E-02 -1.1001E-02 8.2378E-04 S12 -4.4248E-03 2.7603E-02 -6.5272E-02 8.1106E-02 -5.8223E-02 2.4137E-02 -5.7089E-03 7.1673E-04 -3.7084E-05 S13 -2.9983E-02 1.0504E-01 -1.5777E-01 1.1057E-01 -4.3719E-02 1.0522E-02 -1.5424E-03 1.2722E-04 -4.5387E-06

S14 -9.2172E-03 1.6143E-01 -2.2514E-01 1.4976E-01 -6.0013E-02 1.5115E-02 -2.3300E-03 2.0046E-04 -7.3757E-06 S15 -2.4152E-01 2.0798E-01 -1.2183E-01 4.7913E-02 -1.2369E-02 2.0715E-03 -2.1761E-04 1.3095E-05 -3.4632E-07 S16 -2.5363E-01 1.3765E-01 -6.0957E-02 1.7215E-02 -3.0050E-03 3.2403E-04 -2.2115E-05 1.0055E-06 -2.6841E-08

Table 35

Table 36 gives the total effective focal length f of the optical imaging lens of Example 12, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 3.95 2.89 -4.83 10.74 -50.34 -25.29 11.04 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value -53.46 -7.36 3.13 4.79 41.7 1.71

Table 36

Fig. 24A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 12, which shows that light of different wavelengths is deviated from a focus point after the lens. Fig. 24B shows an astigmatism curve of the optical imaging lens of Example 12, which shows meridional field curvature and sagittal image plane curvature. Fig. 24C shows a distortion curve of the optical imaging lens of Embodiment 12, which shows distortion magnitude values in the case of different viewing angles. Fig. 24D shows a magnification chromatic aberration curve of the optical imaging lens of Embodiment 12, which shows deviations of different image heights on the imaging plane after the light passes through the lens. According to FIGS. 24A to 24D, the optical imaging lens given in Embodiment 12 can achieve good imaging quality.

Example 13

An optical imaging lens according to Embodiment 13 of the present application is described below with reference to FIGS. 25 to 26D. Fig. 25 is a view showing the configuration of an optical imaging lens according to Embodiment 13 of the present application.

As shown in FIG. 25, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes an aperture STO, a first lens E1, a second lens E2, a third lens E3, and an image along the optical axis from the object side to the image side. Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a negative refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative refractive power, the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The eighth lens E8 has positive refractive power, and the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 37 shows the surface type, the radius of curvature, the thickness, the material, and the conical coefficient of each lens of the optical imaging lens of Example 13, wherein the units of the radius of curvature and the thickness are each mm (mm).

Table 37

As is clear from Table 37, in the thirteenth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 38 shows the high order term coefficients which can be used for the respective aspherical mirrors in Embodiment 13, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.7581E-03 -2.6902E-02 1.0355E-01 -2.3690E-01 3.3189E-01 -2.9769E-01 1.6499E-01 -5.1948E-02 6.9989E-03 S2 1.9123E-02 -3.4196E-02 1.0568E-01 -2.8109E-01 4.5327E-01 -4.5361E-01 2.7331E-01 -9.0952E-02 1.2906E-02 S3 -3.5389E-02 4.3570E-02 6.3526E-02 -6.7238E-01 2.4015E+00 -4.5339E+00 4.8051E+00 -2.6884E+00 6.1927E-01 S4 -6.8238E-02 7.3898E-02 -3.7137E-01 1.8639E+00 -6.1744E+00 1.2566E+01 -1.5086E+01 9.7672E+00 -2.6140E+00 S5 -2.9227E-02 -1.4085E-03 2.9808E-01 -2.6560E+00 7.8420E+00 -1.2424E+01 1.1135E+01 -5.2719E+00 1.0245E+00 S6 3.6000E-02 5.9895E-02 -6.5008E-01 1.4816E+00 -2.4090E+00 2.9963E+00 -2.5335E+00 1.2528E+00 -2.6665E-01 S7 4.7726E-02 -1.1526E-01 -9.8441E-02 3.9946E-01 -4.6372E-01 3.0604E-01 -1.2269E-01 2.7777E-02 -2.7383E-03 S8 5.0818E-02 -5.1243E-02 -2.5646E-01 5.3139E-01 -4.6989E-01 2.2707E-01 -5.8496E-02 6.5292E-03 -9.9325E-05 S9 -3.5097E-02 2.5863E-01 -6.3557E-01 8.4124E-01 -7.1200E-01 3.9084E-01 -1.3246E-01 2.4938E-02 -1.9853E-03 S10 -9.1543E-02 1.5079E-01 -1.1419E-01 3.8515E-02 -7.2932E-03 5.2518E-03 -3.3539E-03 8.6437E-04 -7.8010E-05 S11 6.8402E-02 -1.9011E-01 2.8693E-01 -3.2502E-01 2.5458E-01 -1.3299E-01 4.2841E-02 -7.5265E-03 5.4668E-04 S12 -1.8647E-02 5.6388E-02 -8.7379E-02 8.9413E-02 -5.9886E-02 2.4301E-02 -5.7112E-03 7.1561E-04 -3.6985E-05 S13 -2.9593E-02 1.1545E-01 -1.7816E-01 1.2547E-01 -4.9290E-02 1.1679E-02 -1.6725E-03 1.3399E-04 -4.6249E-06 S14 -2.6089E-02 1.4816E-01 -1.8852E-01 1.1911E-01 -4.5524E-02 1.0921E-02 -1.6005E-03 1.3067E-04 -4.5536E-06 S15 -2.5730E-01 2.2744E-01 -1.2973E-01 4.8325E-02 -1.1833E-02 1.9100E-03 -1.9780E-04 1.2015E-05 -3.2741E-07 S16 -2.1939E-01 8.1462E-02 -1.3535E-02 -6.6359E-03 4.3327E-03 -1.0671E-03 1.3654E-04 -8.9784E-06 2.3950E-07

Table 38

Table 39 gives the total effective focal length f of the optical imaging lens of Example 13, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 3.95 2.97 -5.19 15.05 -30.89 656.87 10.56 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value -7.07 184.94 3.14 4.79 42.7 1.71

Table 39

Fig. 26A shows an axial chromatic aberration curve of the optical imaging lens of Embodiment 13, which indicates that light of different wavelengths is deviated from a focus point after the lens. Fig. 26B shows an astigmatism curve of the optical imaging lens of Embodiment 13, which shows meridional field curvature and sagittal image plane curvature. Fig. 26C shows a distortion curve of the optical imaging lens of Embodiment 13, which shows the distortion magnitude value in the case of different viewing angles. Fig. 26D shows a magnification chromatic aberration curve of the optical imaging lens of Example 13, which shows the deviation of the different image heights on the imaging plane after the light passes through the lens. 26A to 26D, the optical imaging lens given in Embodiment 13 can achieve good imaging quality.

Example 14

An optical imaging lens according to Embodiment 14 of the present application is described below with reference to FIGS. 27 to 28D. FIG. 27 is a view showing the configuration of an optical imaging lens according to Embodiment 14 of the present application.

As shown in FIG. 27, an optical imaging lens according to an exemplary embodiment of the present application includes, in order from the object side to the image side along the optical axis, a pupil STO, a first lens E1, a second lens E2, and a third lens E3, Four lenses E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging surface S19.

The first lens E1 has a positive refractive power, and the object side surface S1 is a convex surface, and the image side surface S2 is a concave surface. The second lens E2 has a negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface. The third lens E3 has a positive refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a convex surface. The fourth lens E4 has a negative refractive power, the object side surface S7 is a convex surface, and the image side surface S8 is a concave surface. The fifth lens E5 has a positive refractive power, and the object side surface S9 is a convex surface, and the image side surface S10 is a concave surface. The sixth lens E6 has a positive refractive power, and the object side surface S11 is a convex surface, and the image side surface S12 is a convex surface. The seventh lens E7 has a negative refractive power, the object side surface S13 is a concave surface, and the image side surface S14 is a concave surface. The eighth lens E8 has a negative refractive power, the object side surface S15 is a convex surface, and the image side surface S16 is a concave surface. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging plane S19.

Table 40 shows the surface type, radius of curvature, thickness, material, and conical coefficient of each lens of the optical imaging lens of Example 14, in which the unit of curvature radius and thickness are both millimeters (mm).

Table 40

As is clear from the table 40, in the fourteenth embodiment, the object side surface and the image side surface of any one of the first lens E1 to the eighth lens E8 are aspherical. Table 41 shows the high order term coefficients which can be used for the respective aspherical mirrors in Embodiment 14, wherein each aspherical surface type can be defined by the formula (1) given in the above Embodiment 1.

Face number A4 A6 A8 A10 A12 A14 A16 A18 A20 S1 1.2658E-03 -2.2656E-02 8.5590E-02 -1.9135E-01 2.6240E-01 -2.3109E-01 1.2576E-01 -3.8814E-02 5.1150E-03 S2 1.8792E-02 -4.9854E-02 1.7886E-01 -4.7257E-01 7.6750E-01 -7.7562E-01 4.7352E-01 -1.5999E-01 2.3025E-02 S3 -3.3423E-02 1.4723E-02 2.0793E-01 -1.1645E+00 3.4778E+00 -6.0091E+00 6.0208E+00 -3.2371E+00 7.2280E-01 S4 -6.4143E-02 4.8649E-02 -1.3057E-01 4.9111E-01 -1.5962E+00 3.4893E+00 -4.5390E+00 3.1439E+00 -8.8289E-01 S5 -4.4665E-02 2.4100E-01 -1.1903E+00 2.8848E+00 -4.9727E+00 6.1637E+00 -5.2817E+00 2.7920E+00 -6.6697E-01 S6 6.3167E-03 1.9823E-01 -1.0478E+00 2.2104E+00 -3.1458E+00 3.2481E+00 -2.3174E+00 1.0141E+00 -1.9996E-01 S7 4.4999E-02 -1.0503E-01 -8.6043E-02 3.3861E-01 -3.8199E-01 2.4604E-01 -9.6680E-02 2.1552E-02 -2.1012E-03 S8 5.2182E-02 -6.9212E-02 -1.7499E-01 3.8201E-01 -3.2394E-01 1.4507E-01 -3.2736E-02 2.5415E-03 1.0940E-04 S9 -3.2983E-02 2.3207E-01 -5.5011E-01 7.0489E-01 -5.8062E-01 3.1132E-01 -1.0322E-01 1.9026E-02 -1.4836E-03 S10 -9.4368E-02 1.5362E-01 -1.1387E-01 3.6274E-02 -3.8012E-03 1.9850E-03 -1.7755E-03 4.9853E-04 -4.5594E-05 S11 7.2233E-02 -2.0385E-01 3.1737E-01 -3.5820E-01 2.7170E-01 -1.3484E-01 4.1024E-02 -6.8174E-03 4.6991E-04 S12 -1.8705E-02 5.5639E-02 -8.1898E-02 7.9728E-02 -5.1142E-02 1.9976E-02 -4.5317E-03 5.4891E-04 -2.7453E-05 S13 -2.8033E-02 1.0304E-01 -1.5274E-01 1.0311E-01 -3.8769E-02 8.7804E-03 -1.2000E-03 9.1600E-05 -3.0071E-06 S14 -2.4841E-02 1.3468E-01 -1.6487E-01 1.0022E-01 -3.6850E-02 8.5043E-03 -1.1990E-03 9.4191E-05 -3.1586E-06 S15 -2.3279E-01 1.8489E-01 -9.2266E-02 2.9602E-02 -6.1650E-03 8.4148E-04 -7.4321E-05 3.9616E-06 -9.9119E-08 S16 -2.1888E-01 9.2209E-02 -2.6720E-02 1.6518E-03 1.3422E-03 -4.3186E-04 5.8211E-05 -3.7945E-06 9.7314E-08

Table 41

Table 42 gives the total effective focal length f of the optical imaging lens of Example 14, the effective focal lengths f1 to f8 of the respective lenses, the half of the diagonal length of the effective pixel area on the imaging surface S19, ImgH, and the object side S1 of the first lens E1. The distance from the center to the imaging plane S19 on the optical axis is TTL, the maximum half angle of view HFOV, and the number of apertures Fno.

parameter f(mm) F1 (mm) F2 (mm) F3 (mm) F4(mm) F5 (mm) F6(mm) Numerical value 3.97 3.05 -5.47 18.21 -34.39 87.45 11.15 parameter F7 (mm) F8(mm) ImgH(mm) TTL (mm) HFOV(°) Fno Numerical value -9.72 -29.02 3.21 4.83 42.5 1.71

Table 42

Fig. 28A shows an axial chromatic aberration curve of the optical imaging lens of Example 14, which shows that light of different wavelengths is deviated from the focus point after the lens. Fig. 28B shows an astigmatism curve of the optical imaging lens of Example 14, which shows meridional field curvature and sagittal image plane curvature. Fig. 28C shows a distortion curve of the optical imaging lens of Embodiment 14, which shows distortion magnitude values in the case of different viewing angles. Fig. 28D shows a magnification chromatic aberration curve of the optical imaging lens of Example 14, which shows the deviation of the different image heights on the imaging plane after the light passes through the lens. 28A to 28D, the optical imaging lens given in Embodiment 14 can achieve good imaging quality.

In summary, Embodiments 1 to 14 respectively satisfy the relationship shown in Table 43.

Table 43

The present application also provides an image forming apparatus whose electronic photosensitive element may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.

The above description is only a preferred embodiment of the present application and a description of the principles of the applied technology. It should be understood by those skilled in the art that the scope of the invention referred to in the present application is not limited to the specific combination of the above technical features, and should also be covered by the above technical features without departing from the inventive concept. Other technical solutions formed by any combination of their equivalent features. For example, the above features are combined with the technical features disclosed in the present application, but are not limited to the technical features having similar functions.

Claims (24)

The optical imaging lens includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, It is characterized in that The first lens has a positive power and a side of the object is a convex surface; The second lens has a negative refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; The third lens has a positive power or a negative power; The fourth lens has a positive power or a negative power; The fifth lens has a positive power or a negative power; The sixth lens has a positive power or a negative power, and the object side is a convex surface; The seventh lens has a positive power or a negative power; The eighth lens has a positive power or a negative power, the object side is a convex surface, and the image side is a concave surface; The effective focal length f1 of the first lens and the center thickness CT1 of the first lens on the optical axis satisfy 3.0<f1/CT1<4.0. The optical imaging lens according to claim 1, wherein a total effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD ≤ 1.9. The optical imaging lens according to claim 1, wherein a distance TTL between a center of an object side of the first lens to an imaging surface of the optical imaging lens on the optical axis and the optical imaging lens Half of the diagonal length of the effective pixel area on the imaging plane, ImgH, satisfies TTL/ImgH ≤ 1.6. The optical imaging lens according to any one of claims 1 to 3, wherein a radius of curvature R6 of an image side surface of the third lens and a curvature radius R3 of an object side surface of the second lens satisfy |R6/ R3|<7.0. The optical imaging lens according to any one of claims 1 to 3, wherein an effective focal length f2 of the second lens and an effective focal length f1 of the first lens satisfy -2.1 < f2 / f1 < - 1.5 . The optical imaging lens according to any one of claims 1 to 3, wherein 0.3 < (T23 + T56) / ∑ AT < 1.0, Wherein T23 is a separation distance of the second lens and the third lens on the optical axis, and T56 is a separation distance of the fifth lens and the sixth lens on the optical axis, and ΣAT The sum of the separation distances of the adjacent lenses of the first lens to the eighth lens on the optical axis. The optical imaging lens according to any one of claims 1 to 3, wherein a total effective focal length f of the optical imaging lens and the sixth lens, the seventh lens, and the eighth lens The combined focal length f678 satisfies -0.4 < f / f678 < 0. The optical imaging lens according to any one of claims 1 to 3, wherein a radius of curvature R5 of the object side surface of the third lens and a curvature radius R6 of the image side surface of the third lens satisfy | (R5) +R6)/(R5-R6)|<25. The optical imaging lens according to any one of claims 1 to 3, wherein 5.0 < f / (CT3 + CT4 + CT5) < 7.0 is satisfied, Where f is the total effective focal length of the optical imaging lens, CT3 is the center thickness of the third lens on the optical axis, and CT4 is the center thickness of the fourth lens on the optical axis, CT5 is a central thickness of the fifth lens on the optical axis. The optical imaging lens according to any one of claims 1 to 3, wherein |f/f45|+|f/f67|<1 is satisfied, Where f is the total effective focal length of the optical imaging lens, f45 is the combined focal length of the fourth lens and the fifth lens, and f67 is the combined focal length of the sixth lens and the seventh lens. The optical imaging lens according to any one of claims 1 to 3, wherein a radius of curvature R16 of an image side of the eighth lens and an effective focal length f7 of the seventh lens satisfy |R16/f7| 0.5. The optical imaging lens according to any one of claims 1 to 3, wherein a radius of curvature R15 of the object side of the eighth lens and a combined focal length f67 of the sixth lens and the seventh lens satisfy |R15/f67|<0.5. The optical imaging lens includes, in order from the object side to the image side along the optical axis, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens, It is characterized in that The first lens has a positive power and a side of the object is a convex surface; The second lens has a negative refractive power, the object side surface is a convex surface, and the image side surface is a concave surface; The third lens has a positive power or a negative power; The fourth lens has a positive power or a negative power; The fifth lens has a positive power or a negative power; The sixth lens has a positive power or a negative power, and the object side is a convex surface; The seventh lens has a positive power or a negative power; The eighth lens has a positive power or a negative power, the object side is a convex surface, and the image side is a concave surface; Wherein the total effective focal length f of the optical imaging lens, the center thickness CT3 of the third lens on the optical axis, the center thickness CT4 of the fourth lens on the optical axis, and the fifth lens The center thickness CT5 on the optical axis satisfies 5.0 < f / (CT3 + CT4 + CT5) < 7.0. The optical imaging lens according to claim 13, wherein an effective focal length f2 of said second lens and an effective focal length f1 of said first lens satisfy -2.1 < f2 / f1 < - 1.5. The optical imaging lens according to claim 13, wherein a total effective focal length f of said optical imaging lens and a combined focal length f678 of said sixth lens, said seventh lens and said eighth lens satisfy -0.4 <f/f678<0. The optical imaging lens according to claim 13, wherein |f/f45|+|f/f67|<1 is satisfied, Where f is the total effective focal length of the optical imaging lens, f45 is the combined focal length of the fourth lens and the fifth lens, and f67 is the combined focal length of the sixth lens and the seventh lens. The optical imaging lens according to any one of claims 14 to 16, characterized in that the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD ≤ 1.9. The optical imaging lens according to claim 17, wherein an effective focal length f1 of said first lens and a center thickness CT1 of said first lens on said optical axis satisfy 3.0 < f1/CT1 < 4.0. The optical imaging lens according to claim 13, wherein a radius of curvature R6 of the image side surface of the third lens and a curvature radius R3 of the object side surface of the second lens satisfy |R6/R3|<7.0. The optical imaging lens according to claim 13, wherein a radius of curvature R5 of the object side surface of the third lens and a curvature radius R6 of the image side surface of the third lens satisfy |(R5+R6)/(R5) -R6)|<25. The optical imaging lens according to claim 13, wherein a radius of curvature R16 of the image side of the eighth lens and an effective focal length f7 of the seventh lens satisfy |R16/f7|<0.5. The optical imaging lens according to claim 13, wherein a radius of curvature R15 of the object side of the eighth lens and a combined focal length f67 of the sixth lens and the seventh lens satisfy |R15/f67| 0.5. The optical imaging lens according to claim 13, wherein 0.3 < (T23 + T56) / ∑ AT < 1.0, Wherein T23 is a separation distance of the second lens and the third lens on the optical axis, and T56 is a separation distance of the fifth lens and the sixth lens on the optical axis, and ΣAT The sum of the separation distances of the adjacent lenses of the first lens to the eighth lens on the optical axis. The optical imaging lens according to any one of claims 18 to 23, wherein a distance TTL between a center of an object side of the first lens to an imaging surface of the optical imaging lens on the optical axis The half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens, ImgH, satisfies TTL/ImgH ≤ 1.6.

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