TWI702435B - Optical imaging lens - Google Patents

Abstract

An optical imaging lens including a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element and a sixth lens element sequentially along an optical axis from an object side to an image side is provided. Each of the first lens element to the sixth lens element includes an object-side surface facing the object side and allowing imaging rays to pass through and an image-side surface facing the image side and allowing the imaging rays to pass through. The optical imaging lens satisfies the conditions of Gallmax/Fno≧3.600 millimeter, EFL/ImgH≧3.200 and Gallmax/Tavg≧3.300, wherein Gallmax represents a largest air gap along the optical axis between the first lens and an image plane, Fno represents a F-number of the optical imaging lens, EFL represents an effective focal length of the optical imaging lens, ImgH represents an image height of the optical imaging lens, and Tavg represents an average lens thickness of all lenses along the optical axis from the object side to the image plane.

Description

Optical imaging lens

The present invention relates to an optical element, and especially an optical imaging lens.

The specifications of portable electronic products are changing with each passing day, and their key components-optical imaging lenses are also developing more diversified. The application areas of automotive lenses continue to increase, from reversing displays, 360-degree panoramic views, lane shifting systems to advanced driver assistance systems (ADAS), etc.

The car lens itself must be able to withstand tests in various weather conditions, so the lens of the lens usually uses a glass material that can withstand environmental tests and is scratch-resistant and corrosion-resistant. In addition, automotive lenses are also expected to meet the needs of tele-cameras. With wide-angle lenses, they can achieve the function of optical zoom; if the effective focal length of the telescope lens is longer, the zoom effect can be higher.

Therefore, a vehicle lens that can withstand various weather conditions and has a long effective focal length, low cost, and conforming to the imaging quality is a problem that requires multiple studies.

The invention provides an optical imaging lens, which can withstand tests in various weather environments and has an optical imaging lens with a long effective focal length, low cost and conforming to imaging quality.

An embodiment of the present invention provides an optical imaging lens that includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in order from the object side to the image side along the optical axis. Each of the first lens to the sixth lens includes an object side surface that faces the object side and passes imaging light rays, and an image side surface that faces the image side and passes imaging light rays. The first lens is the first lens counted from the object side to the image side, and the first lens has positive refractive power. The second lens is the second lens counted from the object side to the image side. The third lens is the third lens counted from the object side to the image side. The fourth lens is the fourth lens counted from the object side to the image side. The fifth lens is the fifth lens counted from the object side to the image side. The sixth lens is the sixth lens counted from the object side to the image side. The optical imaging lens satisfies the following conditional expressions: Gallmax/Fno≧3.600mm, EFL/ImgH≧3.200 and Gallmax/Tavg≧3.300, where Gallmax is the largest air gap on the optical axis between the first lens and the imaging surface, and Fno is optical The aperture value of the imaging lens, EFL is the effective focal length of the optical imaging lens, ImgH is the image height of the optical imaging lens, and Tavg is the average lens thickness of all lenses on the optical axis between the object side and the imaging surface.

An embodiment of the present invention provides an optical imaging lens that includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in order from the object side to the image side along the optical axis. Each of the first lens to the sixth lens includes an object side surface that faces the object side and passes imaging light rays, and an image side surface that faces the image side and passes imaging light rays. The first lens is the first lens counted from the object side to the image side, and the first lens has positive refractive power. The second lens is the second lens counted from the object side to the image side. The third lens is the third lens counted from the object side to the image side. The fourth lens is the fourth lens counted from the object side to the image side. The fifth lens is the fifth lens counted from the object side to the image side. The sixth lens is the sixth lens counted from the object side to the image side. The optical imaging lens satisfies the following conditional formulas: Gallmax/Fno≧3.600mm, EFL/ImgH≧3.200 and EFL/Gallmax≦4.000, where Gallmax is the largest air gap on the optical axis between the first lens and the imaging surface, and Fno is optical The aperture value of the imaging lens, EFL is the effective focal length of the optical imaging lens, and ImgH is the image height of the optical imaging lens.

An embodiment of the present invention provides an optical imaging lens that includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens in order from the object side to the image side along the optical axis. Each of the first lens to the sixth lens includes an object side surface that faces the object side and passes imaging light rays, and an image side surface that faces the image side and passes imaging light rays. The first lens is the first lens counted from the object side to the image side. The second lens is the second lens counted from the object side to the image side. The third lens is the third lens counted from the object side to the image side. The fourth lens is the fourth lens counted from the object side to the image side. The fifth lens is the fifth lens counted from the object side to the image side. The sixth lens is the sixth lens counted from the object side to the image side. The optical imaging lens satisfies the following conditional formulas: Gallmax/Fno≧3.600mm, EFL/ImgH≧2.200, EFL/HFOV≦3.000mm/degree and TTL/BFL≧4.500, where Gallmax is the optical axis between the first lens and the imaging surface The largest air gap above, Fno is the aperture value of the optical imaging lens, EFL is the effective focal length of the optical imaging lens, ImgH is the image height of the optical imaging lens, HFOV is the half angle of view of the optical imaging lens, and TTL is the object side of the first lens The distance to the imaging surface on the optical axis, and BFL is the distance from the image side of the last lens to the imaging surface on the optical axis from the object side to the image side.

Based on the above, the beneficial effects of the optical imaging lens of the embodiments of the present invention are: by satisfying the above-mentioned concave-convex curved surface arrangement design, refractive power conditions and the above-mentioned conditional design, the optical imaging lens can resist various weather conditions. Tested to provide long effective focal length, low cost and in line with imaging quality.

The terms "optical axis area", "circumferential area", "concave surface" and "convex surface" used in this specification and the scope of the patent application should be interpreted based on the definitions listed in this specification.

The optical system in this specification includes at least one lens, which receives the imaging light from the incident optical system parallel to the optical axis to a half angle of view (HFOV) angle relative to the optical axis. The imaging light passes through the optical system to form images on the imaging surface. The phrase "a lens has positive refractive power (or negative refractive power)" means that the paraxial refractive power calculated by the lens according to Gaussian optics theory is positive (or negative). The so-called "object side (or image side) of the lens" is defined as the specific range of the imaging light passing through the lens surface. Imaging light includes at least two types of light: chief ray (chief ray) Lc and marginal ray (marginal ray) Lm (as shown in Figure 1). The object side (or image side) of the lens can be divided into different areas according to different positions, including the optical axis area, the circumferential area, or one or more relay areas in some embodiments. The description of these areas will be detailed below Elaborate.

FIG. 1 is a radial cross-sectional view of the lens 100. Two reference points on the surface of the lens 100 are defined: the center point and the conversion point. The center point of the lens surface is an intersection point of the surface and the optical axis I. As shown in FIG. 1, the first center point CP1 is located on the object side surface 110 of the lens 100, and the second center point CP2 is located on the image side surface 120 of the lens 100. The conversion point is a point on the surface of the lens, and the tangent to the point is perpendicular to the optical axis I. The optical boundary OB that defines the lens surface is the point where the edge ray Lm passing through the radially outermost edge of the lens surface intersects the lens surface. All transition points are located between the optical axis I and the optical boundary OB of the lens surface. In addition, if there are multiple conversion points on the surface of a single lens, the conversion points are named sequentially from the first conversion point in a radially outward direction. For example, the first conversion point TP1 (closest to the optical axis I), the second conversion point TP2 (as shown in FIG. 4), and the Nth conversion point (the farthest from the optical axis I).

The range from the center point to the first conversion point TP1 is defined as the optical axis area, where the optical axis area includes the center point. The area from the Nth conversion point farthest from the optical axis I radially outward to the optical boundary OB is defined as a circumferential area. In some embodiments, it may further include a relay area between the optical axis area and the circumferential area, and the number of relay areas depends on the number of switching points.

When the light parallel to the optical axis I passes through an area, if the light is deflected toward the optical axis I and the intersection point with the optical axis I is on the lens image side A2, the area is convex. When the light parallel to the optical axis I passes through an area, if the intersection of the extension line of the light and the optical axis I is located at the lens object side A1, the area is concave.

In addition, referring to FIG. 1, the lens 100 may further include an assembly portion 130 extending radially outward from the optical boundary OB. The assembling part 130 is generally used for assembling the lens 100 to a corresponding element of the optical system (not shown). The imaging light does not reach the assembling part 130. The structure and shape of the assembling part 130 are only examples for illustrating the present invention, and the scope of the present invention is not limited thereto. The lens assembly 130 discussed below may be partially or completely omitted in the drawings.

Referring to FIG. 2, the optical axis zone Z1 is defined between the center point CP and the first conversion point TP1. A circumferential zone Z2 is defined between the first transition point TP1 and the optical boundary OB of the lens surface. As shown in FIG. 2, the parallel light ray 211 intersects the optical axis I on the image side A2 of the lens 200 after passing through the optical axis zone Z1, that is, the focal point of the parallel light ray 211 passing through the optical axis zone Z1 is located at the R point of the image side A2 of the lens 200. Since the light intersects the optical axis I at the image side A2 of the lens 200, the optical axis area Z1 is convex. On the contrary, the parallel light 212 diverges after passing through the circumferential zone Z2. As shown in FIG. 2, the extension line EL of the parallel light ray 212 after passing through the circumferential area Z2 intersects the optical axis I at the object side A1 of the lens 200, that is, the focal point of the parallel light 212 passing through the circumferential area Z2 is located at point M on the object side A1 of the lens 200 . Since the extension line EL of the light intersects the optical axis I at the object side A1 of the lens 200, the circumferential area Z2 is a concave surface. In the lens 200 shown in FIG. 2, the first conversion point TP1 is the boundary between the optical axis area and the circumferential area, that is, the first conversion point TP1 is the boundary point between the convex surface and the concave surface.

On the other hand, the unevenness of the optical axis area can be judged according to the judgment method of ordinary knowledge in the field, that is, the sign of the paraxial curvature radius (abbreviated as R value) is used to judge the optical axis area surface of the lens. Shaped bumps. The R value can be commonly used in optical design software, such as Zemax or CodeV. The R value is also commonly found in the lens data sheet of optical design software. For the object side, when the R value is positive, it is determined that the optical axis area of the object side is convex; when the R value is negative, it is determined that the optical axis area of the object side is concave. Conversely, for the image side, when the R value is positive, it is determined that the optical axis area of the image side is concave; when the R value is negative, it is determined that the optical axis area of the image side is convex. The result of this method is consistent with the result of the aforementioned method of judging by the intersection of the ray/ray extension line and the optical axis. The method of judging the intersection of the ray/ray extension line and the optical axis is that the focus of a ray parallel to the optical axis is located on the lens The object side or the image side to determine the surface unevenness. The "a region is convex (or concave)", "a region is convex (or concave)" or "a convex (or concave) region" described in this manual can be used interchangeably.

Figures 3 to 5 provide examples of determining the surface shape of the lens area and the area boundary in each case, including the aforementioned optical axis area, circumferential area, and relay area.

FIG. 3 is a radial cross-sectional view of the lens 300. 3, the image side surface 320 of the lens 300 has only one transition point TP1 within the optical boundary OB. The optical axis area Z1 and the circumferential area Z2 of the image side surface 320 of the lens 300 are shown in FIG. 3. The R value of this image side surface 320 is positive (that is, R>0), and therefore, the optical axis area Z1 is a concave surface.

Generally speaking, the surface shape of each area bounded by the conversion point will be opposite to the surface shape of the adjacent area. Therefore, the conversion point can be used to define the conversion of the surface shape, that is, from the conversion point from a concave surface to a convex surface or from a convex surface to a concave surface. In FIG. 3, since the optical axis area Z1 is a concave surface and the surface shape changes at the transition point TP1, the circumferential area Z2 is a convex surface.

FIG. 4 is a radial cross-sectional view of the lens 400. Referring to FIG. 4, the object side 410 of the lens 400 has a first switching point TP1 and a second switching point TP2. The optical axis area Z1 of the object side surface 410 is defined between the optical axis I and the first conversion point TP1. The R value of the side surface 410 of the object is positive (that is, R>0), and therefore, the optical axis area Z1 is a convex surface.

A circumferential area Z2 is defined between the second conversion point TP2 and the optical boundary OB of the object side surface 410 of the lens 400, and the circumferential area Z2 of the object side surface 410 is also a convex surface. In addition, a relay zone Z3 is defined between the first transition point TP1 and the second transition point TP2, and the relay zone Z3 of the object side surface 410 is a concave surface. 4 again, the object side surface 410 includes the optical axis area Z1 between the optical axis I and the first conversion point TP1 radially outward from the optical axis I, and is located between the first conversion point TP1 and the second conversion point TP2. The relay zone Z3 and the circumferential zone Z2 between the second switching point TP2 and the optical boundary OB of the object side surface 410 of the lens 400. Since the optical axis area Z1 is a convex surface, the surface shape changes from the first switching point TP1 to a concave surface, so the relay area Z3 is a concave surface, and the surface shape changes from the second switching point TP2 to a convex surface, so the circumferential area Z2 is a convex surface.

FIG. 5 is a radial cross-sectional view of the lens 500. The object side 510 of the lens 500 has no transition point. For a lens surface without a conversion point, such as the object side 510 of the lens 500, 0-50% of the distance from the optical axis I to the optical boundary OB of the lens surface is defined as the optical axis area, from the optical axis I to the lens surface. The 50-100% of the distance between the boundaries OB is the circumferential area. Referring to the lens 500 shown in FIG. 5, 50% of the distance from the optical axis I to the optical boundary OB on the surface of the lens 500 is defined as the optical axis zone Z1 of the object side surface 510. The R value of the side surface 510 of the object is positive (that is, R>0), so the optical axis area Z1 is a convex surface. Since the object side surface 510 of the lens 500 has no transition point, the circumferential area Z2 of the object side surface 510 is also convex. The lens 500 may further have an assembly portion (not shown) extending radially outward from the circumferential area Z2.

6 is a schematic diagram of the optical imaging lens of the first embodiment of the present invention, and FIGS. 7A to 7D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the first embodiment. Referring to FIG. 6, the optical imaging lens 10 of the first embodiment of the present invention includes a first lens 1, an aperture 0, and an optical axis I of the optical imaging lens 10 from the object side A1 to the image side A2. The second lens 2, a third lens 3, a fourth lens 4, a fifth lens 5, a sixth lens 6 and a filter 9. When the light emitted by an object to be photographed enters the optical imaging lens 10, and passes through the first lens 1, the aperture 0, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, and the sixth lens 6. After the filter 9, an image is formed on an image plane 99 (Image Plane). The filter 9 is disposed between the image side surface 66 and the image surface 99 of the sixth lens 6. It is supplemented that the object side is the side facing the object to be photographed, and the image side is the side facing the imaging surface 99. In an embodiment, the filter 9 may be an infrared cut filter (IR Cut Filter), but the invention is not limited thereto.

In this embodiment, the first lens 1, the second lens 2, the third lens 3, the fourth lens 4, the fifth lens 5, the sixth lens 6 and the filter 9 of the optical imaging lens 10 each have an orientation. The object side 15, 25, 35, 45, 55, 65, 95 on the object side through which the imaging light passes and an image side 16, 26, 36, 46, 56, 66, 96 facing the image side through which the imaging light passes. In this embodiment, the aperture 0 is placed between the first lens 1 and the second lens 2.

The first lens 1 has positive refractive power. The material of the first lens 1 is glass. The optical axis area 151 of the object side surface 15 of the first lens 1 is convex, and the circumferential area 153 thereof is convex. The optical axis area 161 of the image side surface 16 of the first lens 1 is concave, and the circumferential area 163 thereof is concave. In this embodiment, both the object side 15 and the image side 16 of the first lens 1 are spherical surfaces, but the invention is not limited to this.

The second lens 2 has a negative refractive power. The material of the second lens 2 is glass. The optical axis area 251 of the object side surface 25 of the second lens 2 is concave, and the circumferential area 253 thereof is concave. The optical axis area 261 of the image side surface 26 of the second lens 2 is concave, and the circumferential area 263 thereof is concave. In this embodiment, both the object side surface 25 and the image side surface 26 of the second lens 2 are spherical surfaces, but the invention is not limited to this.

The third lens 3 has positive refractive power. The material of the third lens 3 is glass. The optical axis area 351 of the object side 35 of the third lens 3 is convex, and the circumferential area 353 thereof is convex. The optical axis area 361 of the image side surface 36 of the third lens 3 is convex, and the circumferential area 363 thereof is convex. In this embodiment, both the object side 35 and the image side 36 of the third lens 3 are spherical, but the invention is not limited to this.

In addition, in an embodiment, the second lens 2 and the third lens 3 may be cemented lenses.

The fourth lens 4 has positive refractive power. The material of the fourth lens 4 is glass. The optical axis area 451 of the object side 45 of the fourth lens 4 is convex, and the circumferential area 453 thereof is convex. The optical axis area 461 of the image side surface 46 of the fourth lens 4 is convex, and the circumferential area 463 thereof is convex. In this embodiment, the object side 45 and the image side 46 of the fourth lens 4 are spherical surfaces, but the invention is not limited to this.

The fifth lens 5 has positive refractive power. The material of the fifth lens 5 is glass. The optical axis area 551 of the object side surface 55 of the fifth lens 5 is convex, and the circumferential area 553 thereof is convex. The optical axis area 561 of the image side surface 56 of the fifth lens 5 is concave, and the circumferential area 563 thereof is concave. In this embodiment, both the object side 55 and the image side 56 of the fifth lens 5 are spherical surfaces, but the invention is not limited to this.

The sixth lens 6 has a negative refractive power. The material of the sixth lens 6 is glass. The optical axis area 651 of the object side surface 65 of the sixth lens 6 is concave, and the circumferential area 653 thereof is concave. The optical axis area 661 of the image side surface 66 of the sixth lens 6 is concave, and the circumferential area 663 thereof is concave. In this embodiment, both the object side 65 and the image side 66 of the sixth lens 6 are spherical surfaces, but the invention is not limited to this.

Other detailed optical data of the first embodiment is shown in FIG. 8, and the effective focal length (Effective Focal Length, EFL) of the optical imaging lens 10 of the first embodiment is 20.520 mm (Millimeter, mm), and the half field of view (Half Field of View, HFOV) is 13.870 degrees, aperture value (F-number, Fno) is 2.000, its system length is 35.000 mm, image height is 5.140 mm, and the system length refers to the distance from the object side 15 of the first lens 1 to the imaging surface The distance of 99 on the optical axis I.

In addition, the relationship between important parameters in the optical imaging lens 10 of the first embodiment is shown in FIGS. 21 and 22. among them, T1 is the thickness of the first lens 1 on the optical axis I; T2 is the thickness of the second lens 2 on the optical axis I; T3 is the thickness of the third lens 3 on the optical axis I; T4 is the thickness of the fourth lens 4 on the optical axis I; T5 is the thickness of the fifth lens 5 on the optical axis I; T6 is the thickness of the sixth lens 6 on the optical axis I; T7 is the thickness of the seventh lens 7 on the optical axis I (for example, the seventh lens 7 in FIGS. 15 and 18); T8 is the thickness of the eighth lens 8 on the optical axis I (for example, the eighth lens 8 in FIG. 18); G12 is the distance from the image side 16 of the first lens 1 to the object side 25 of the second lens 2 on the optical axis I, that is, the air gap between the first lens 1 and the second lens 2 on the optical axis I; G23 is the distance from the image side 26 of the second lens 2 to the object side 35 of the third lens 3 on the optical axis I, that is, the air gap between the second lens 2 and the third lens 3 on the optical axis I; G34 is the distance from the image side 36 of the third lens 3 to the object side 45 of the fourth lens 4 on the optical axis I, that is, the air gap between the third lens 3 and the fourth lens 4 on the optical axis I; G45 is the distance from the image side 46 of the fourth lens 4 to the object side 55 of the fifth lens 5 on the optical axis I, that is, the air gap between the fourth lens 4 and the fifth lens 5 on the optical axis I; G56 is the distance from the image side 56 of the fifth lens 5 to the object side 65 of the sixth lens 6 on the optical axis I, that is, the air gap between the fifth lens 5 and the sixth lens 6 on the optical axis I; G67 is the distance from the image side 66 of the sixth lens 6 to the object side 75 of the seventh lens 7 on the optical axis I, that is, the air gap between the sixth lens 6 and the seventh lens 7 on the optical axis I; G78 is the distance from the image side 76 of the seventh lens 7 to the object side 85 of the eighth lens 8 on the optical axis I, that is, the air gap between the seventh lens 7 and the eighth lens 8 on the optical axis I; AAG is the sum of the air gaps from the first lens 1 to the last lens on the optical axis I counted from the object side A1 to the image side A2 (in the first embodiment, the air gaps G12, G23, G34, G45, and G56) sum); ALT is the sum of the thicknesses of all lenses on the optical axis I (in the first embodiment, the sum of the thicknesses T1, T2, T3, T4, T5, and T6); TL is the distance from the object side 15 of the first lens 1 to the image side of the last lens counted from the object side A1 to the image side A2 on the optical axis I (in the first embodiment, the object side 15 of the first lens 1 The distance to the image side 66 of the sixth lens 6 on the optical axis I); TTL is the distance on the optical axis I from the object side 15 of the first lens 1 to the imaging surface 99; BFL is the distance from the image side of the last lens to the imaging surface 99 on the optical axis I from the object side A1 to the image side A2 (in the first embodiment, the image side 66 of the sixth lens 6 to the imaging surface 99 The distance on the optical axis I); EFL is the effective focal length of the optical imaging lens 10; HFOV is the half angle of view of the optical imaging lens 10; ImgH is the image height of the optical imaging lens 10; and Fno is the aperture value of the optical imaging lens 10. In addition, define: GFF is the air gap on the optical axis I from the last lens to the object side 95 of the filter 9 as counted from the object side A1 to the image side A2 (in the first embodiment, the sixth lens 6 to the filter 9 are in The air gap on the optical axis I); TF is the thickness of the filter 9 on the optical axis I; GFP is the distance from the image side 96 of the filter 9 to the imaging surface 99 on the optical axis I, that is, the air gap between the filter 9 and the imaging surface 99 on the optical axis I; Gallmax is the largest air gap on the optical axis I between the first lens 1 and the imaging surface 99; Tmax is the thickest lens thickness on the optical axis I between the object side A1 and the imaging surface 99; Tmin is the thinnest lens thickness on the optical axis I between the object side A1 and the imaging surface 99; Tavg is the average lens thickness of all lenses on the optical axis I between the object side A1 and the imaging surface 99; f1 is the focal length of the first lens 1; f2 is the focal length of the second lens 2; f3 is the focal length of the third lens 3; f4 is the focal length of the fourth lens 4; f5 is the focal length of the fifth lens 5; f6 is the focal length of the sixth lens 6; f7 is the focal length of the seventh lens 7; f8 is the focal length of the eighth lens 8; n1 is the refractive index of the first lens 1; n2 is the refractive index of the second lens 2; n3 is the refractive index of the third lens 3; n4 is the refractive index of the fourth lens 4; n5 is the refractive index of the fifth lens 5; n6 is the refractive index of the sixth lens 6; n7 is the refractive index of the seventh lens 7; n8 is the refractive index of the eighth lens 8; V1 is the Abbe number of the first lens 1, and the Abbe number can also be called the dispersion coefficient; V2 is the Abbe number of the second lens 2; V3 is the Abbe number of the third lens 3; V4 is the Abbe number of the fourth lens 4; V5 is the Abbe number of the fifth lens 5; V6 is the Abbe number of the sixth lens 6; V7 is the Abbe number of the seventh lens 7; and V8 is the Abbe number of the eighth lens 8.

With reference to FIGS. 7A to 7D, the diagram of FIG. 7A illustrates the Longitudinal Spherical Aberration of the first embodiment, and the diagrams of FIG. 7B and FIG. 7C respectively illustrate the first embodiment when its wavelength is 470 nm The field curvature aberration in the Sagittal direction and the field curvature aberration in the Tangential direction on the imaging plane 99 at 555 nm and 650 nm. The diagram in Figure 7D illustrates the first implementation For example, when the wavelengths are 470 nm, 555 nm, and 650 nm, the distortion aberration on the imaging surface 99 (Distortion Aberration). The longitudinal spherical aberration of the first embodiment is shown in Figure 7A. The curves formed by each wavelength are very close and approach the middle, indicating that off-axis rays of different heights of each wavelength are concentrated near the imaging point. The deflection amplitude of the wavelength curve can be seen that the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.050 mm, so the first embodiment does significantly improve the spherical aberration of the same wavelength. In addition, three representative wavelengths The distance between each other is also quite close, which means that the imaging positions of light of different wavelengths have been quite concentrated, so that the chromatic aberration has also been significantly improved.

In the two field curvature aberration diagrams in Figures 7B and 7C, the focal length changes of the three representative wavelengths within the entire field of view fall within ±0.04 mm, indicating that the optical system of the first embodiment can effectively eliminate image difference. The distortion aberration diagram in FIG. 7D shows that the distortion aberration of the first embodiment is maintained within ±2%, indicating that the distortion aberration of the first embodiment meets the imaging quality requirements of the optical system. It shows that compared with the existing optical lens, the first embodiment can still provide good imaging quality under the condition that the effective focal length has been increased to about 20.520 mm. Therefore, the first embodiment can maintain good optical performance. Can provide a long effective focal length and has good imaging quality.

9 is a schematic diagram of the optical imaging lens of the second embodiment of the present invention, and FIGS. 10A to 10D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the second embodiment. Please refer to FIG. 10 first, a second embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: the optical data and the lenses 1, 2, 3, 4 The parameters between, 5 and 6 are more or less different. In addition, in this embodiment, the fourth lens 4 has a negative refractive power. The optical axis area 461 of the image side surface 46 of the fourth lens 4 is a concave surface, and the circumferential area 463 of the image side surface 46 of the fourth lens 4 is a concave surface. The optical axis area 661 of the image side surface 66 of the sixth lens 6 is convex, and the circumferential area 663 of the image side surface 66 of the sixth lens 6 is convex. It should be noted here that, in order to clearly show the drawing, the reference numerals of the optical axis area and the circumferential area similar to the first embodiment are omitted in FIG. 9.

The detailed optical data of the optical imaging lens 10 of the second embodiment is shown in FIG. 11, and the effective focal length of the optical imaging lens 10 of the second embodiment is 19.712 mm, the half angle of view (HFOV) is 14.480 degrees, and the aperture value (Fno) It is 2.000, the system length is 35.100 mm, and the image height is 5.140 mm.

In addition, the relationship between important parameters in the optical imaging lens 10 of the second embodiment is shown in FIGS. 21 and 22.

The longitudinal spherical aberration of the second embodiment is shown in FIG. 10A, and the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.050 mm. In the two field curvature aberration diagrams in FIGS. 10B and 10C, the focal length variation of the three representative wavelengths within the entire field of view falls within ±0.08 mm. The distortion aberration diagram in FIG. 10D shows that the distortion aberration of the second embodiment is maintained within a range of ±2%.

12 is a schematic diagram of the optical imaging lens of the third embodiment of the present invention, and FIGS. 13A to 13D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the third embodiment. 12, a third embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: the optical data and the lenses 1, 2, 3, 4 The parameters between, 5 and 6 are more or less different. In addition, in this embodiment, the aperture 0 is placed between the third lens 3 and the fourth lens 4. The optical axis area 161 of the image side surface 16 of the first lens 1 is a flat surface, and the circumferential area 163 of the image side surface 16 of the first lens 1 is a flat surface. The second lens 2 has positive refractive power. The optical axis area 251 of the object side surface 25 of the second lens 2 is convex, and the circumferential area 253 of the object side surface 25 of the second lens 2 is convex. The third lens 3 has a negative refractive power. The optical axis area 361 of the image side surface 36 of the third lens 3 is concave, and the circumferential area 363 of the image side surface 36 of the third lens 3 is concave. The optical axis area 461 of the image side surface 46 of the fourth lens 4 is a concave surface, and the circumferential area 463 of the image side surface 46 of the fourth lens 4 is a concave surface. The optical axis area 551 of the object side 55 of the fifth lens 5 is concave, and the circumferential area 553 of the object side 55 of the fifth lens 5 is concave. The optical axis area 561 of the image side surface 56 of the fifth lens 5 is convex, and the circumferential area 563 of the image side surface 56 of the fifth lens 5 is convex. The sixth lens 6 has positive refractive power. The optical axis area 651 of the object side surface 65 of the sixth lens 6 is convex, and the circumferential area 653 of the object side surface 65 of the sixth lens 6 is convex. The optical axis area 661 of the image side surface 66 of the sixth lens 6 is a flat surface, and the circumferential area 663 of the image side surface 66 of the sixth lens 6 is a flat surface. It should be noted here that, in order to clearly show the figure, the reference numerals of the optical axis area and the circumferential area similar to the first embodiment are omitted in FIG. 12.

The detailed optical data of the optical imaging lens 10 of the third embodiment is shown in FIG. 14, and the effective focal length of the optical imaging lens 10 of the third embodiment is 20.111 mm, the half angle of view (HFOV) is 13.900 degrees, and the aperture value (Fno) It is 2.400, the system length is 35.100 mm, and the image height is 5.140 mm.

In addition, the relationship between important parameters in the optical imaging lens 10 of the third embodiment is shown in FIGS. 21 and 22.

The longitudinal spherical aberration of the third embodiment is shown in FIG. 13A, and the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.050 mm. In the two field curvature aberration diagrams in FIGS. 13B and 13C, the focal length variation of the three representative wavelengths within the entire field of view falls within ±0.050 mm. The distortion aberration diagram in FIG. 13D shows that the distortion aberration of the third embodiment is maintained within the range of ±5%.

In addition, the thickness difference between the optical axis and the circumferential area of the lens of the third embodiment is smaller than that of the first embodiment, which is easy to manufacture and therefore has a higher yield.

15 is a schematic diagram of the optical imaging lens of the fourth embodiment of the present invention, and FIGS. 16A to 16D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the fourth embodiment. Please refer to FIG. 15 first. A fourth embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: the optical data and the lenses 1, 2, 3, 4 The parameters between, 5 and 6 are more or less different. In this embodiment, the optical imaging lens 10 further includes a seventh lens 7. In addition, the aperture 0 is placed between the third lens 3 and the fourth lens 4. The optical axis area 161 of the image side surface 16 of the first lens 1 is convex, and the circumferential area 163 of the image side surface 16 of the first lens 1 is convex. The second lens 2 has positive refractive power. The optical axis area 251 of the object side surface 25 of the second lens 2 is convex, and the circumferential area 253 of the object side surface 25 of the second lens 2 is convex. The optical axis area 261 of the image side surface 26 of the second lens 2 is convex, and the circumferential area 263 of the image side surface 26 of the second lens 2 is convex. The third lens 3 has a negative refractive power. The optical axis area 351 of the object side surface 35 of the third lens 3 is a concave surface, and the circumferential area 353 of the object side surface 35 of the third lens 3 is a concave surface. The fourth lens 4 has a negative refractive power. The optical axis area 461 of the image side surface 46 of the fourth lens 4 is a concave surface, and the circumferential area 463 of the image side surface 46 of the fourth lens 4 is a concave surface. The optical axis area 551 of the object side 55 of the fifth lens 5 is concave, and the circumferential area 553 of the object side 55 of the fifth lens 5 is concave. The optical axis area 561 of the image side surface 56 of the fifth lens 5 is convex, and the circumferential area 563 of the image side surface 56 of the fifth lens 5 is convex. The sixth lens 6 has positive refractive power. The optical axis area 651 of the object side surface 65 of the sixth lens 6 is convex, and the circumferential area 653 of the object side surface 65 of the sixth lens 6 is convex. The seventh lens 7 is placed between the sixth lens 6 and the filter 9. The material of the seventh lens 7 is glass. The seventh lens 7 has a negative refractive power. The optical axis area 751 of the object side surface 75 of the seventh lens 7 is concave, and the circumferential area 753 of the object side surface 75 of the seventh lens 7 is concave. The optical axis area 761 of the image side surface 76 of the seventh lens 7 is a flat surface, and the circumferential area 763 of the image side surface 76 of the seventh lens 7 is a flat surface. It should be noted here that, in order to clearly show the drawing, the reference numerals of the optical axis area and the circumferential area similar to the first embodiment are omitted in FIG. 15.

The detailed optical data of the optical imaging lens 10 of the fourth embodiment is shown in FIG. 17, and the effective focal length of the optical imaging lens 10 of the fourth embodiment is 20.050 mm, the half angle of view (HFOV) is 13.55 degrees, and the aperture value (Fno) It is 2.250, the system length is 35.100 mm, and the image height is 5.150 mm.

In addition, the relationship between important parameters in the optical imaging lens 10 of the fourth embodiment is shown in FIGS. 21 and 22.

The longitudinal spherical aberration of the fourth embodiment is shown in FIG. 16A, and the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.050 mm. In the two field curvature aberration diagrams in FIGS. 16B and 16C, the focal length variation of the three representative wavelengths within the entire field of view falls within ±0.1 mm. The distortion aberration diagram in FIG. 16D shows that the distortion aberration of the fourth embodiment is maintained within the range of ±8%.

From the above description, it can be known that the thickness difference between the optical axis and the circumferential area of the lens of the fourth embodiment is smaller than that of the first embodiment, and it is easy to manufacture and therefore has a higher yield.

18 is a schematic diagram of the optical imaging lens of the fifth embodiment of the present invention, and FIGS. 19A to 19D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the fifth embodiment. 18, a fifth embodiment of the optical imaging lens 10 of the present invention is roughly similar to the first embodiment, and the differences between the two are as follows: the optical data and the lenses 1, 2, 3, 4 The parameters between, 5 and 6 are more or less different. In this embodiment, the optical imaging lens 10 further includes a seventh lens 7 and an eighth lens 8. In addition, the aperture 0 is placed between the fourth lens 4 and the fifth lens 5. The second lens 2 has positive refractive power. The optical axis area 251 of the object side surface 25 of the second lens 2 is convex, and the circumferential area 253 of the object side surface 25 of the second lens 2 is convex. The fourth lens 4 has a negative refractive power. The optical axis area 451 of the object side 45 of the fourth lens 4 is a concave surface, and the circumferential area 453 of the object side 45 of the fourth lens 4 is a concave surface. The optical axis area 461 of the image side surface 46 of the fourth lens 4 is a concave surface, and the circumferential area 463 of the image side surface 46 of the fourth lens 4 is a concave surface. The fifth lens 5 has a negative refractive power. The optical axis area 551 of the object side 55 of the fifth lens 5 is concave, and the circumferential area 553 of the object side 55 of the fifth lens 5 is concave. The optical axis area 561 of the image side surface 56 of the fifth lens 5 is convex, and the circumferential area 563 of the image side surface 56 of the fifth lens 5 is convex. The optical axis area 661 of the image side surface 66 of the sixth lens 6 is convex, and the circumferential area 663 of the image side surface 66 of the sixth lens 6 is convex. The seventh lens 7 is placed between the sixth lens 6 and the eighth lens 8. The material of the seventh lens 7 is glass. The seventh lens 7 has positive refractive power. The optical axis area 751 of the object side surface 75 of the seventh lens 7 is concave, and the circumferential area 753 of the object side surface 75 of the seventh lens 7 is concave. The optical axis area 761 of the image side surface 76 of the seventh lens 7 is convex, and the circumferential area 763 of the image side surface 76 of the seventh lens 7 is convex. The eighth lens 8 is placed between the seventh lens 7 and the filter 9. The material of the eighth lens 8 is glass. The eighth lens 8 has positive refractive power. The optical axis area 851 of the object side surface 85 of the eighth lens 8 is convex, and the circumferential area 853 of the object side surface 85 of the eighth lens 8 is convex. The optical axis area 861 of the image side surface 86 of the eighth lens 8 is a flat surface, and the circumferential area 863 of the image side surface 86 of the eighth lens 8 is a flat surface. It should be noted here that, in order to clearly show the drawing, the reference numerals of the optical axis area and the circumferential area similar to the first embodiment are omitted in FIG. 18.

In addition, in an embodiment, the third lens 3 and the fourth lens 4 may be cemented lenses.

The detailed optical data of the optical imaging lens 10 of the fifth embodiment is shown in FIG. 20, and the effective focal length of the optical imaging lens 10 of the fifth embodiment is 21.631 mm, the half angle of view (HFOV) is 13.37 degrees, and the aperture value (Fno) It is 2.150, the system length is 35.000 mm, and the image height is 5.130 mm.

In addition, the relationship between important parameters in the optical imaging lens 10 of the fifth embodiment is shown in FIGS. 21 and 22.

The longitudinal spherical aberration of the fifth embodiment is shown in FIG. 19A, and the deviation of the imaging point of off-axis rays of different heights is controlled within the range of ±0.050 mm. In the two field curvature aberration diagrams in Figures 19B and 19C, the focal length changes in the sagittal direction of the three representative wavelengths within the entire field of view fall within ±0.04 mm, and the focal length changes in the meridional direction fall within Within ±0.08 mm. The distortion aberration diagram in FIG. 19D shows that the distortion aberration of the fifth embodiment is maintained within the range of ±0.5%.

From the above description, it can be known that the half angle of view of the fifth embodiment is smaller than that of the first embodiment, so the magnification is larger. The distortion aberration of the fifth embodiment is better than that of the first embodiment.

Please refer to FIG. 21 and FIG. 22 together. FIG. 21 and FIG. 22 are table diagrams of various optical parameters of the first embodiment to the fifth embodiment.

The optical imaging lens 10 of the embodiment of the present invention further satisfies the following conditional expressions, which helps maintain the effective focal length and the optical parameters at an appropriate value, and avoids any parameter that is too large to be conducive to the correction of the overall aberration of the optical imaging system. Or avoid any parameter that is too small to affect assembly or increase the difficulty of manufacturing.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: (EFL+BFL)/Gallmax≦3.700, wherein the preferable range is 2.200≦(EFL+BFL)/Gallmax≦3.700.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: (EFL+BFL)/Fno≦16.000 mm, wherein the preferable range is 9.600 mm≦(EFL+BFL)/Fno≦16.000 mm .

In order to shorten the length of the lens system and ensure the image quality, while considering the difficulty of production, the air gap between the lenses or the thickness of the lens is reduced as a means. If the numerical limit of the following conditional formula is satisfied, the implementation of the present invention can be achieved The optical imaging lens 10 of the example has a preferable configuration.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: AAG/Tavg≦8.000, wherein the preferable range is 4.100≦AAG/Tavg≦8.000.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: Gallmax/Tmax≦3.000, wherein the preferable range is 1.000≦Gallmax/Tmax≦3.000.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: Tmax/Tmin≧4.000, wherein the preferable range is 4.000≦Tmax/Tmin≦13.000.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: ALT/(G34+G45)≧7.000, wherein the preferred range is 7.000≦ALT/(G34+G45)≦14.600.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: (T1+G12)/(T2+G23+T3)≧1.500, wherein the preferable range is 1.500≦(T1+G12)/ (T2+G23+T3)≦4.700.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: AAG/Tmin≦21.000, and the preferable range is 8.500≦AAG/Tmin≦21.000.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: TL/Tmax≦8.000, wherein the preferable range is 3.400≦TL/Tmax≦8.000.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: ALT/(T1+G12+T2)≦2.000, wherein the preferred range is 0.850≦ALT/(T1+G12+T2)≦ 2.000.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: (T4+T5)/(T2+T6)≧2.100, wherein the preferable range is 2.100≦(T4+T5)/(T2 +T6)≦4.000.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: TL/(G34+G56)≧9.800, wherein the preferred range is 9.800≦TL/(G34+G56)≦28.900.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: AAG/(G12+G34)≦2.500, wherein the preferable range is 0.900≦AAG/(G12+G34)≦2.500.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: TTL/(Tmax+Tmin)≦8.300, wherein the preferable range is 3.600≦TTL/(Tmax+Tmin)≦8.300.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: TL/(G12+G56)≦4.000, wherein the preferable range is 1.900≦TL/(G12+G56)≦4.000.

In the optical imaging lens 10 of the embodiment of the present invention, the following conditional formula is met: (T4+G45+T5)/(T1+T6)≧2.100, wherein the preferred range is 2.100≦(T4+G45+T5 )/(T1+T6)≦3.700.

In addition, any combination of the embodiment parameters can be selected to increase the lens limit, so as to facilitate the lens design of the same architecture of the present invention. In view of the unpredictability of the optical system design, under the framework of the embodiment of the present invention, meeting the above conditional expressions can better shorten the length of the optical imaging lens system of the embodiment of the present invention, increase the effective focal length, and increase the image height. , The imaging quality is improved, or the assembly yield is improved to improve the shortcomings of the prior art, and the use of glass in the lens of the embodiment of the present invention can prolong the service life of the optical imaging lens and effectively resist environmental testing.

The above-listed exemplary limited relational expressions can also be selectively combined with unequal numbers and applied to the embodiments of the present invention, and they are not limited thereto. In the implementation of the present invention, in addition to the aforementioned relational expressions, other detailed structures such as the arrangement of concave and convex surfaces of the lenses can also be designed for a single lens or more widely for multiple lenses to enhance system performance and/or Resolution control. It should be noted that these details need to be selectively combined and applied to other embodiments of the present invention without conflict.

In summary, the optical imaging lens 10 of the embodiment of the present invention can achieve the following effects and advantages:

1. The longitudinal spherical aberration, astigmatic aberration, and distortion of the various embodiments of the present invention meet the usage specifications. In addition, the three off-axis rays of red, green, and blue representing wavelengths at different heights are all concentrated near the imaging point. From the deflection amplitude of each curve, it can be seen that the deviation of the imaging point of off-axis rays of different heights is controlled and has Good spherical aberration, aberration and distortion suppression capabilities. Further referring to the imaging quality data, the distances between the three representative wavelengths of red, green, and blue are also quite close to each other, indicating that the present invention has good concentration of light of different wavelengths under various conditions and has excellent dispersion suppression ability. In summary, the present invention can produce excellent imaging quality through the design and mutual matching of the lenses.

2. Through the design of lens parameters in each embodiment of the present invention, for example: the first lens has a positive refractive power, and when the optical imaging lens meets: Gallmax/Fno≧3.600mm, EFL/ImgH≧3.200, and with Gallmax/Tavg≧ 3.300 or EFL/Gallmax≦4.000, can effectively increase the luminous flux and increase the effective focal length of the entire optical imaging lens, while having good imaging quality, including Gallmax/Fno, EFL/ImgH, Gallmax/Tavg, EFL /Gallmax, the preferred implementation range is 3.600mm≦Gallmax/Fno≦6.300mm, 3.200≦EFL/ImgH≦4.600, 3.300≦Gallmax/Tavg≦5.500, 1.600≦EFL/Gallmax≦4.000, respectively.

In addition, when Gallmax/Fno≧3.600mm, EFL/ImgH≧2.200, EFL/HFOV≦3.000mm/degree, TTL/BFL≧4.500, in addition to maintaining good image quality, when EFL/ImgH≧2.200 can go further Increase the effective focal length and achieve the purpose of correcting the aberration of the optical system and reducing the distortion. Among them, the preferred implementation range of EFL/ImgH, EFL/HFOV, TTL/BFL is 2.200≦EFL/ImgH≦4.600, 1.200mm/degree≦EFL/HFOV ≦3.000mm/degree, 4.500≦TTL/BFL≦9.650.

The numerical range including the maximum and minimum values obtained from the combination ratio relationship of the optical parameters disclosed in each embodiment of the present invention can be implemented accordingly.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be determined by the scope of the attached patent application.

0: aperture 1: the first lens 2: second lens 3: third lens 4: The fourth lens 5: The fifth lens 6: sixth lens 7: seventh lens 8: Eighth lens 9: filter 10: Optical imaging lens 15, 25, 35, 45, 55, 65, 75, 85, 95, 110, 410, 510: Object side 16, 26, 36, 46, 56, 66, 76, 86, 96, 120, 320: like side 99: imaging surface 100, 200, 300, 400, 500: lens 130: Assembly Department 151, 161, 251, 261, 351, 361, 451, 461, 551, 561, 651, 661, 751, 761, 851, 861, Z1: Optical axis area 153, 163, 253, 263, 353, 363, 453, 463, 553, 563, 653, 663, 753, 763, 853, 863, Z2: circumferential area 211, 212: parallel rays A1: Object side A2: Image side CP: central point CP1: the first center point CP2: second center point EL: extension cord I: Optical axis Lm: edge light Lc: chief ray M, R: intersection point OB: Optical boundary TP1: first transition point TP2: second transition point Z3: Relay zone

Fig. 1 is a schematic diagram illustrating the surface structure of a lens. FIG. 2 is a schematic diagram illustrating the convex and concave structure of a lens and the focus of light rays. FIG. 3 is a schematic diagram illustrating the surface structure of a lens of Example 1. FIG. FIG. 4 is a schematic diagram illustrating the surface structure of a lens of Example 2. FIG. FIG. 5 is a schematic diagram illustrating the surface structure of a lens of Example 3. 6 is a schematic diagram of the optical imaging lens of the first embodiment of the present invention. 7A to 7D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the first embodiment. FIG. 8 shows detailed optical data of the optical imaging lens of the first embodiment of the present invention. FIG. 9 is a schematic diagram of an optical imaging lens according to a second embodiment of the present invention. 10A to 10D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the second embodiment. FIG. 11 shows detailed optical data of the optical imaging lens of the second embodiment of the present invention. FIG. 12 is a schematic diagram of an optical imaging lens according to a third embodiment of the present invention. 13A to 13D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the third embodiment. FIG. 14 shows detailed optical data of the optical imaging lens of the third embodiment of the present invention. 15 is a schematic diagram of an optical imaging lens according to a fourth embodiment of the present invention. 16A to 16D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the fourth embodiment. FIG. 17 shows detailed optical data of the optical imaging lens of the fourth embodiment of the present invention. FIG. 18 is a schematic diagram of an optical imaging lens according to a fifth embodiment of the present invention. 19A to 19D are diagrams of longitudinal spherical aberration and various aberrations of the optical imaging lens of the fifth embodiment. FIG. 20 shows detailed optical data of the optical imaging lens of the fifth embodiment of the present invention. FIG. 21 and FIG. 22 show the values of important parameters and their relational expressions of the optical imaging lens of the first to fifth embodiments of the present invention.

0: aperture

1: the first lens

2: second lens

3: third lens

4: The fourth lens

5: The fifth lens

6: sixth lens

9: filter

10: Optical imaging lens

15, 25, 35, 45, 55, 65, 95: object side

16, 26, 36, 46, 56, 66, 96: like side

99: imaging surface

151, 161, 251, 261, 351, 361, 451, 461, 551, 561, 651, 661: Optical axis area

153, 163, 253, 263, 353, 363, 453, 463, 553, 563, 653, 663: circumferential area

A1: Object side

A2: Image side

I: Optical axis

Claims (20)

An optical imaging lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in sequence along an optical axis from an object side to an image side, The first lens to the sixth lens each include an object side surface that faces the object side and allows imaging light to pass through, and an image side surface that faces the image side and allows the imaging light to pass through, wherein The first lens is the first lens counted from the object side to the image side, and the first lens has positive refractive power; The second lens is the second lens counted from the object side to the image side; The third lens is the third lens counted from the object side to the image side; The fourth lens is the fourth lens counted from the object side to the image side; The fifth lens is the fifth lens counted from the object side to the image side; and The sixth lens is the sixth lens counted from the object side to the image side; The optical imaging lens satisfies the following conditional formulas: Gallmax/Fno≧3.600 mm, EFL/ImgH≧3.200 and Gallmax/Tavg≧3.300, where Gallmax is the largest air gap on the optical axis between the first lens and an imaging surface , Fno is the aperture value of the optical imaging lens, EFL is the effective focal length of the optical imaging lens, ImgH is the image height of the optical imaging lens, and Tavg is between the object side and the imaging surface, all lenses are on the optical axis The average value of the lens thickness. An optical imaging lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in sequence along an optical axis from an object side to an image side, The first lens to the sixth lens each include an object side surface that faces the object side and allows imaging light to pass through, and an image side surface that faces the image side and allows the imaging light to pass through, wherein The first lens is the first lens counted from the object side to the image side, and the first lens has positive refractive power; The second lens is the second lens counted from the object side to the image side; The third lens is the third lens counted from the object side to the image side; The fourth lens is the fourth lens counted from the object side to the image side; The fifth lens is the fifth lens counted from the object side to the image side; and The sixth lens is the sixth lens counted from the object side to the image side; The optical imaging lens satisfies the following conditional formulas: Gallmax/Fno≧3.600mm, EFL/ImgH≧3.200 and EFL/Gallmax≦4.000, where Gallmax is the largest air gap on the optical axis between the first lens and an imaging surface , Fno is the aperture value of the optical imaging lens, EFL is the effective focal length of the optical imaging lens, and ImgH is the image height of the optical imaging lens. The optical imaging lens according to any one of claim 1 to claim 2, wherein the optical imaging lens further satisfies the following conditional formula: (EFL+BFL)/Gallmax≦3.700, where BFL is from the object side to the The image side is the distance from the image side of the last lens to the imaging surface on the optical axis. The optical imaging lens according to any one of claim 1 to claim 2, wherein the optical imaging lens further satisfies the following conditional formula: TTL/(Tmax+Tmin)≦8.300, where TTL is the first lens The distance between the object side and the imaging surface on the optical axis, Tmax is the thickest lens thickness on the optical axis between the object side and the imaging surface, and Tmin is the distance between the object side and the imaging surface. The thinnest lens thickness on the optical axis. The optical imaging lens according to any one of claim 1 to claim 2, wherein the optical imaging lens further satisfies the following conditional formula: (EFL+BFL)/Fno≦16.000 mm, where BFL is from the object side to The image side number is the distance from the image side surface of the last lens to the imaging surface on the optical axis. The optical imaging lens according to any one of claim 1 to claim 2, wherein the optical imaging lens further satisfies the following conditional formula: TTL/BFL≧4.500, where TTL is the object side of the first lens to the The distance of the imaging surface on the optical axis, and the BFL is the distance from the image side of the last lens to the imaging surface on the optical axis from the object side to the image side. An optical imaging lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens in sequence along an optical axis from an object side to an image side, The first lens to the sixth lens each include an object side surface that faces the object side and allows imaging light to pass through, and an image side surface that faces the image side and allows the imaging light to pass through, wherein The first lens is the first lens counted from the object side to the image side; The second lens is the second lens counted from the object side to the image side; The third lens is the third lens counted from the object side to the image side; The fourth lens is the fourth lens counted from the object side to the image side; The fifth lens is the fifth lens counted from the object side to the image side; The sixth lens is the sixth lens counted from the object side to the image side; The optical imaging lens satisfies the following conditional formulas: Gallmax/Fno≧3.600mm, EFL/ImgH≧2.200, EFL/HFOV≦3.000mm/degree and TTL/BFL≧4.500, where Gallmax is between the first lens and an imaging surface The largest air gap on the optical axis, Fno is the aperture value of the optical imaging lens, EFL is the effective focal length of the optical imaging lens, ImgH is the image height of the optical imaging lens, HFOV is the half angle of view of the optical imaging lens, TTL is the distance from the object side of the first lens to the imaging surface on the optical axis, and BFL is the distance from the object side to the image side from the image side of the last lens to the imaging surface on the optical axis the distance. The optical imaging lens of any one of claim 2 or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: AAG/Tavg≦8.000, where AAG is the first lens to the object side The number of image sides is the sum of the air gaps of the last lens on the optical axis, and Tavg is the average value of the lens thicknesses of all lenses on the optical axis between the object side and the imaging surface. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: Gallmax/Tmax≦3.000, where Tmax is the object side to the imaging The thickest lens thickness between the faces on the optical axis. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: Tmax/Tmin≧4.000, where Tmax is the object side to the imaging The thickest lens thickness on the optical axis between the surfaces, and Tmin is the thinnest lens thickness on the optical axis between the object side and the imaging surface. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: ALT/(G34+G45)≧7.000, where ALT is the light The total thickness of all lenses on the axis, G34 is the air gap between the third lens and the fourth lens on the optical axis, and G45 is the air gap between the fourth lens and the fifth lens on the optical axis. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: (T1+G12)/(T2+G23+T3)≧1.500 , Where T1 is the thickness of the first lens on the optical axis, T2 is the thickness of the second lens on the optical axis, T3 is the thickness of the third lens on the optical axis, G12 is the first lens The air gap with the second lens on the optical axis, and G23 is the air gap between the second lens and the third lens on the optical axis. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: AAG/Tmin≦21.000, where AAG is the first lens to from The number from the object side to the image side is the sum of the air gap of the last lens on the optical axis, and Tmin is the thinnest lens thickness on the optical axis between the object side and the imaging surface. The optical imaging lens of any one of Claim 1, Claim 2, or Claim 7, wherein the optical imaging lens further satisfies the following conditional formula: TL/Tmax≦8.000, where TL is the first lens The distance from the object side to the image side of the last lens counted from the object side to the image side on the optical axis, and Tmax is the thickest lens thickness on the optical axis between the object side and the imaging surface . The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: ALT/(T1+G12+T2)≦2.000, where ALT is The total thickness of all lenses on the optical axis, T1 is the thickness of the first lens on the optical axis, T2 is the thickness of the second lens on the optical axis, and G12 is the first lens and the second lens The air gap on the optical axis. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: (T4+T5)/(T2+T6)≧2.100, where T2 is the thickness of the second lens on the optical axis, T4 is the thickness of the fourth lens on the optical axis, T5 is the thickness of the fifth lens on the optical axis, and T6 is the thickness of the sixth lens on the optical axis. The thickness on the optical axis. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: TL/(G34+G56)≧9.800, where TL is the first The distance from the object side of a lens to the image side of the last lens on the optical axis counted from the object side to the image side. G34 is the air between the third lens and the fourth lens on the optical axis G56 is the air gap between the fifth lens and the sixth lens on the optical axis. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: AAG/(G12+G34)≦2.500, where AAG is the first The sum of the air gap from one lens to the last lens on the optical axis counted from the object side to the image side, G12 is the air gap between the first lens and the second lens on the optical axis, and G34 is The air gap between the third lens and the fourth lens on the optical axis. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: TL/(G12+G56)≦4.000, where TL is the first The distance from the object side of a lens to the image side of the last lens on the optical axis counted from the object side to the image side, G12 is the air between the first lens and the second lens on the optical axis G56 is the air gap between the fifth lens and the sixth lens on the optical axis. The optical imaging lens according to any one of claim 1, claim 2, or claim 7, wherein the optical imaging lens further satisfies the following conditional formula: (T4+G45+T5)/(T1+T6)≧2.100 , Where T1 is the thickness of the first lens on the optical axis, T4 is the thickness of the fourth lens on the optical axis, T5 is the thickness of the fifth lens on the optical axis, T6 is the sixth lens The thickness on the optical axis, and G45 is the air gap between the fourth lens and the fifth lens on the optical axis.

Images