WO2022061690A1 - Optical imaging system, image pickup module and electronic device - Google Patents

Abstract

An optical imaging system (10, 20, 30, 40, 50, 60, 70), an image pickup module (100) and an electronic device (1000). The optical imaging system (10, 20, 30, 40, 50, 60, 70) comprises: a first lens (L1) that has positive refractive power, an object side surface (S1) of the first lens (L1) being convex near the optical axis, and an image side surface (S2) of the first lens (L1) being concave near the optical axis; a second lens (L2) that has negative refractive power, an object side surface (S3) of the second lens (L2) being convex near the optical axis, and an image side surface (S4) of the second lens (L2) being concave near the optical axis; a third lens (L3), fourth lens (L4), fifth lens (L5) and sixth lens (L6) that have refractive power; and a seventh lens (L7) that has negative refractive power, an image side surface (S14) of the seventh lens (L7) being concave near the optical axis, wherein the optical imaging system (10, 20, 30, 40, 50, 60, 70) satisfies the following relationship: (L71p1-L71p2)-(L62p1- L62p2)<0.9 mm. The optical imaging system (10, 20, 30, 40, 50, 60, 70) may achieve the photographing function of a large aperture and a large image plane. Moreover, it may be ensured that the optical imaging system has relatively low sensitivity, and has relatively high imaging quality while achieving miniaturization.

Description

Optical imaging system, imaging module and electronic device technical field

The invention relates to optical imaging technology, in particular to an optical imaging system, an imaging module and an electronic device.

Background technique

Nowadays, with the rapid development of science and technology, consumers have higher and higher requirements for the imaging quality of mobile electronic products. At present, the five-piece imaging module is widely used in the market, but its resolution is increasingly unable to meet the needs of consumers. Compared with the five-piece imaging module, the seven-piece imaging module can obtain higher It can be used in mobile electronic products to improve the image quality, resolution and clarity of shooting. In addition, the performance of photosensitive elements such as photocouplers (CCDs) and complementary metal oxide semiconductor elements (CMOS) also has It has been greatly improved, making it possible to shoot high-quality images, and bringing people a higher-quality shooting experience.

In the process of realizing this application, the inventor found that there are at least the following problems in the prior art: due to the small size of mobile electronic products, as the number of lenses increases, the size of the imaging module will also increase, and the existing seven It is difficult for the chip imaging module to achieve high imaging quality while being miniaturized.

SUMMARY OF THE INVENTION

In view of the above content, it is necessary to propose an optical imaging system, an imaging module and an electronic device to solve the above problems.

The embodiment of the present application proposes an optical imaging system, which includes sequentially from the object side to the image side:

The first lens with positive refractive power, the object side near optical axis of the first lens is convex, and the image side near optical axis of the first lens is concave;

The second lens with negative refractive power, the object side near optical axis of the second lens is convex, and the image side near optical axis of the second lens is concave;

a third lens having refractive power;

a fourth lens with refractive power;

a fifth lens with refractive power;

a sixth lens with refractive power;

A seventh lens with negative refractive power, the image side near optical axis of the seventh lens is concave;

The optical imaging system satisfies the following relationship:

(L71p1-L71p2)-(L62p1-L62p2)<0.9mm;

Wherein, L62p1 represents the maximum vertical distance from the intersection of the fringe field of view and the image side of the sixth lens to the optical axis, L62p2 represents the minimum vertical distance from the intersection of the fringe field of view and the image side of the sixth lens to the optical axis, L71p1 Represents the maximum vertical distance from the intersection of the fringe field of view and the object side of the seventh lens to the optical axis, L71p2 represents the minimum vertical distance from the intersection of the fringe field of view and the object side of the seventh lens to the optical axis, and the fringe view The field is the light beam that is incident and converges to the point furthest from the optical axis of the imaging plane of the optical imaging system.

The above-mentioned optical imaging system can realize the shooting function of large aperture and large image surface through the mixed arrangement of seven lenses with refractive power and the reasonable combination design of the convex surface and the concave surface of each lens, and can ensure that the optical imaging system has low sensitivity, In the case of realizing miniaturization, it has high imaging quality at the same time; and, satisfying the above relationship, the difference between the clear apertures of the seventh lens and the sixth lens can be reasonably controlled, and the structure of the two lenses can be effectively reduced The difference on the break makes the edge of the field of view more smooth, easy to process the lens and the stability of the production.

In some embodiments, the image-side near-optical axis of the third lens is convex, the object-side near-optical axis of the fourth lens is concave, and the image-side near-optical axis of the fourth lens is convex , the object side near the optical axis of the fifth lens is a convex surface, the image side near the optical axis of the fifth lens is a concave surface, the object side near the optical axis of the sixth lens is a convex surface, the sixth lens The image side of the lens is concave near the optical axis.

The reasonable collocation of the above-mentioned lenses is favorable for large-angle light to enter the optical imaging system, expands the field angle range of the optical imaging system, and is favorable for realizing the miniaturization and light weight of the optical imaging system.

In some embodiments, the optical imaging system satisfies the following relationship:

Fno<2;

Wherein, Fno is the aperture number of the optical imaging system.

Satisfying the above relationship can ensure that the optical imaging system has the characteristics of large aperture, and the optical imaging system has enough light input to make the captured image clearer, and can realize the shooting of high-quality night scenes, starry sky and other space scenes with low brightness.

In some embodiments, the optical imaging system satisfies the following relationship:

R6≤-1000mm;

Wherein, R6 is the curvature radius of the image side surface of the third lens.

Satisfying the above relationship can effectively reduce the sensitivity of the optical imaging system on the image side of the third lens, and improve the yield of the optical imaging system.

In some embodiments, the optical imaging system satisfies the following relationship:

(L52p1-L52p2)/CT5<7;

Wherein, L52p1 represents the maximum vertical distance from the intersection of the fringe field of view and the image side of the fifth lens to the optical axis, L52p2 represents the minimum vertical distance from the intersection of the fringe field of view and the image side of the fifth lens to the optical axis, CT5 is the distance between the object side surface of the fifth lens and the image side surface of the fifth lens on the optical axis.

Satisfying the above relationship can make the fifth lens easier to process and shape, and improve the performance of the lens.

In some embodiments, the optical imaging system satisfies the following relationship:

TTL/Imgh<1.3;

TTL is the distance from the object side of the first lens to the image plane of the optical imaging system on the optical axis, and Imgh is half of the image height corresponding to the maximum angle of view of the optical imaging system.

Satisfying the above-mentioned relationship can make the optical imaging system have ultra-thin characteristics and meet the requirements of miniaturization.

In some embodiments, the optical imaging system satisfies the following relationship:

1.0<TTL/f<1.2;

Wherein, f is the effective focal length of the optical imaging system, and TTL is the distance from the object side of the first lens to the image plane of the optical imaging system on the optical axis.

Satisfying the above relational formula can realize the miniaturization design requirements, and at the same time meet the high-definition optical performance, the effective focal length of the optical imaging system matches the structure.

In some embodiments, the optical imaging system satisfies the following relationship:

f*tan(HFOV)>6mm;

Wherein, f is the effective focal length of the optical imaging system, and HFOV is half of the maximum angle of view of the optical imaging system.

Satisfying the above relationship can make the optical imaging system have the characteristics of a large image plane, so that the optical imaging system has the characteristics of high pixel and high definition.

The embodiment of the present application also proposes an imaging module, including:

optical imaging systems; and

A photosensitive element, the photosensitive element is arranged on the image side of the optical imaging system.

The imaging module of the embodiment of the present invention includes an optical imaging system. The optical imaging system can realize the shooting function of large aperture and large image surface through the mixed arrangement of seven lenses with refractive power and the reasonable combination design of the convex surface and the concave surface of each lens. , and can ensure that the optical imaging system has low sensitivity, good processing technology, and high imaging quality while achieving miniaturization; and, satisfying the above relationship, can reasonably control the seventh lens and the sixth lens The difference between the clear apertures of the lens can effectively reduce the discontinuity between the two lens structures, so that the light in the edge field of view is smoother, and the processing of the lens and the stability of the production are easy.

An embodiment of the present invention provides an electronic device, comprising: a casing and the imaging module of the above-mentioned embodiment, wherein the imaging module is mounted on the casing.

The electronic device according to the embodiment of the present invention includes an imaging module. The optical imaging system in the imaging module is arranged through a mixed arrangement of seven lenses with refractive power, and a reasonable combination design of the convex and concave surfaces of each lens, so that a large aperture and large aperture can be achieved. It can also ensure that the optical imaging system has low sensitivity, good processing technology, and high imaging quality while achieving miniaturization; and, satisfying the above relationship, it can reasonably control the first The difference between the clear apertures of the seventh lens and the sixth lens can effectively reduce the discontinuity in the structure of the two lenses, so that the light in the edge field of view is smoother, and the processing of the lens and the stability of the production are easy.

Description of drawings

The above and/or additional aspects and advantages of the present invention may become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic structural diagram of an optical imaging system of an example of the present invention.

FIG. 2 is a schematic structural diagram of an optical imaging system according to the first embodiment of the present invention.

3 is a graph of spherical aberration (mm), astigmatism (mm) and distortion (%) of the optical imaging system in the first embodiment of the present invention.

FIG. 4 is a schematic structural diagram of an optical imaging system according to a second embodiment of the present invention.

5 is a graph of spherical aberration (mm), astigmatism (mm) and distortion (%) of the optical imaging system in the second embodiment of the present invention.

FIG. 6 is a schematic structural diagram of an optical imaging system according to a third embodiment of the present invention.

7 is a graph of spherical aberration (mm), astigmatism (mm) and distortion (%) of the optical imaging system in the third embodiment of the present invention.

FIG. 8 is a schematic structural diagram of an optical imaging system according to a fourth embodiment of the present invention.

9 is a graph of spherical aberration (mm), astigmatism (mm) and distortion (%) of the optical imaging system in the fourth embodiment of the present invention.

FIG. 10 is a schematic structural diagram of an optical imaging system according to a fifth embodiment of the present invention.

11 is a graph of spherical aberration (mm), astigmatism (mm) and distortion (%) of the optical imaging system in the fifth embodiment of the present invention.

FIG. 12 is a schematic structural diagram of an optical imaging system according to a sixth embodiment of the present invention.

13 is a graph showing spherical aberration (mm), astigmatism (mm) and distortion (%) of the optical imaging system in the sixth embodiment of the present invention.

FIG. 14 is a schematic structural diagram of an optical imaging system according to a sixth embodiment of the present invention.

15 is a graph of spherical aberration (mm), astigmatism (mm) and distortion (%) of the optical imaging system in the sixth embodiment of the present invention.

FIG. 16 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Description of main component symbols

Electronic device 1000

Image acquisition module 100

Optical imaging system 10, 20, 30, 40, 50, 60, 70

The first lens L1

Second lens L2

The third lens L3

Fourth lens L4

Fifth lens L5

The sixth lens L6

The seventh lens L7

Infrared filter L8

Aperture STO

Object side S1, S3, S5, S7, S9, S11, S13, S15

Like the side S2, S4, S6, S8, S10, S12, S14, S16

Like face S17

Photosensitive element 80

Shell 200

detailed description

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outer", clockwise, "counterclockwise" The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore Can not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for description purposes, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus , the features defined with "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more , unless otherwise specifically defined.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection, electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two elements or the interaction of two elements relation. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include the first and second features in direct contact, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level less than the second feature.

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity and not in itself indicative of a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Please refer to FIG. 1, the following is the description of the terms involved in the embodiments of the present application:

Field of view (FOV): In an optical instrument, the angle formed by the lens of the optical instrument as the vertex and the angle formed by the two edges of the maximum range of the object image that can pass through the lens is called the field of view. The size of the field of view determines the field of view of the optical instrument. The larger the field of view, the larger the field of view. That is, objects within the field of view can be photographed through the lens, and objects outside the field of view cannot be seen. The entire visible range corresponds to the imaging surface of the optical instrument one-to-one. The imaging surface is evenly distributed into N parts from the optical axis to the outside. The light of the field converges at the farthest point off the axis and is recorded as 1.0 field of view, 0 to 0.5 is the inner field of view, and 0.6 to 1.0 is the outer field of view.

Referring to FIG. 2 , the optical imaging system 10 of the embodiment of the present invention sequentially includes a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a third lens L3 with refractive power from the object side to the image side , a fourth lens L4 with refractive power, a fifth lens L5 with refractive power, a sixth lens L6 with refractive power, and a seventh lens L7 with negative refractive power.

The first lens L1 has an object side surface S1 and an image side surface S2, the object side surface S1 of the first lens L1 is a convex surface at the near optical axis, and the image side surface S2 of the first lens L1 is a concave surface at the near optical axis; the second lens L2 has an object side surface. S3 and the image side S4, the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 of the second lens L2 is concave at the near optical axis; the third lens L3 has the object side S5 and the image side S6, the first The fourth lens L4 has an object side S7 and an image side S8, the fifth lens L5 has an object side S9 and an image side S10; the sixth lens L6 has an object side S11 and an image side S12; the seventh lens L7 has an object side S13 and an image side S14 , the image side surface S14 of the seventh lens L7 is concave at the near optical axis. In addition, there is an image plane S17 on the image side of the optical imaging system 10, and preferably, the image plane S17 can be the receiving plane of the photosensitive element.

The optical imaging system 10 satisfies the following relationship:

(L71p1-L71p2)-(L62p1-L62p2)<0.9mm;

Among them, please continue to refer to FIG. 1, L62p1 represents the maximum vertical distance from the intersection of the fringe field of view and the image side of the sixth lens L6 to the optical axis, and L62p2 represents the minimum distance from the intersection of the fringe field of view and the image side of the sixth lens L6 to the optical axis Vertical distance, L71p1 represents the maximum vertical distance from the intersection of the fringe field of view and the object side of the seventh lens L7 to the optical axis, L71p2 represents the minimum vertical distance from the intersection of the fringe field of view and the object side of the seventh lens L7 to the optical axis, fringe view The field is the light beam that is incident and converges to the point furthest from the optical axis of the imaging plane of the optical imaging system 10 .

The above-mentioned optical imaging system 10 can realize the shooting function of large aperture and large image surface through the mixed arrangement of seven lenses with refractive power and the reasonable combination design of the convex surface and the concave surface of each lens, and can ensure that the optical imaging system 10 has a lower sensitivity. In addition, if the above relationship is satisfied, the difference between the clear apertures of the seventh lens L7 and the sixth lens L6 can be reasonably controlled, and the The discontinuity of the two lens structures can be effectively reduced, so that the light in the edge field of view is smoother, and the processing of the lens and the stability of the production are easy.

Further, the optical imaging system 10 proposed by the present invention has the characteristics of a large aperture, which has a larger amount of light than the camera lens, which can improve the shooting conditions in dark light, and can also be suitable for night scenes and rainy days while satisfying high-definition image shooting. , starry sky and other dark light environments, and have better blur effect, and at the same time has the characteristics of ultra-thin and large image surface, in the case of miniaturization, the resolution of the system can be improved, so that the system has a better imaging effect.

When the optical imaging system 10 is used for imaging, the light emitted or reflected by the object enters the optical imaging system 10 from the object side direction, and passes through the first lens L1, the second lens L2, the third lens L3, and the fourth lens in sequence L4 , the fifth lens L5 , the sixth lens L6 and the seventh lens L7 finally converge on the image plane S17 .

In some embodiments, the image side S6 of the third lens L3 is convex at the near optical axis, the object side S7 of the fourth lens L4 is concave at the near optical axis, and the image side S8 of the fourth lens L4 is convex at the near optical axis , the object side S7 of the fifth lens L5 is a convex surface at the near optical axis, the image side S8 of the fifth lens L5 is a concave surface at the near optical axis, the object side S11 of the sixth lens L6 is a convex surface at the near optical axis, and the sixth lens L6 The image side S12 is concave at the near optical axis.

The reasonable arrangement of the above-mentioned lenses facilitates the large-angle light entering the optical imaging system 10 , expands the field of view range of the optical imaging system 10 , and facilitates miniaturization and weight reduction of the optical imaging system 10 .

In some embodiments, the optical imaging system 10 further includes a stop STO. The stop STO may be disposed before the first lens L1, after the sixth lens L6, between any two lenses, or on the surface of any one lens. Aperture STO is used to reduce stray light and help improve image quality. Preferably, the diaphragm STO is arranged on the object side surface S1 of the first lens L1.

In some embodiments, the optical imaging system 10 further includes an infrared filter L8, and the infrared filter L8 has an object side S15 and an image side S16. The infrared filter L8 is arranged on the image side of the seventh lens L7, and the infrared filter L8 is used to filter the imaged light, and is specifically used to isolate the infrared light and prevent the infrared light from being received by the photosensitive element, thereby preventing the infrared light from affecting the normal image. Color and sharpness are affected, thereby improving the imaging quality of the imaging lens 10 . Preferably, the infrared filter L8 is an infrared cut-off filter.

In some embodiments, at least one surface of at least one lens in the optical imaging system 10 is aspherical, which is conducive to correcting aberrations and improving imaging quality.

The shape of the aspheric surface is determined by the following formula:

where Z is the longitudinal distance between any point on the aspheric surface and the vertex of the surface, r is the distance from any point on the aspheric surface to the optical axis, c is the vertex curvature (the reciprocal of the radius of curvature), k is the conic constant, and Ai is the i-th aspheric surface order correction factor.

In this way, the optical imaging system 10 can effectively reduce the size of the optical imaging system 10 by adjusting the curvature radius and aspheric coefficient of each lens surface, effectively correct the aberrations, and improve the imaging quality.

In some embodiments, the optical imaging system 10 satisfies the following relationship:

Fno<2;

Wherein, Fno is the aperture number of the optical imaging system 10 .

Satisfying the above relationship can ensure that the optical imaging system 10 has the characteristics of large aperture, and the optical imaging system 10 has sufficient light input to make the captured image clearer, and can achieve high-quality night scenes, starry sky and other object spaces with low brightness Scenes. However, when Fno does not satisfy the above-mentioned relational expression, the amount of light entering the optical imaging system 10 is large, and the obtained captured image has high brightness.

In some embodiments, the optical imaging system 10 satisfies the following relationship:

R6≤-1000mm;

Wherein, R6 is the curvature radius of the image side surface S6 of the third lens L3.

Satisfying the above relational expression can effectively reduce the sensitivity of the optical imaging system 10 on the image side surface S6 of the third lens L3 and improve the yield of the optical imaging system 10 . However, when R6 does not satisfy the above relationship, the sensitivity of the optical imaging system 10 on the image side surface S6 of the third lens L3 is relatively high, which is not conducive to improving the yield of the optical imaging system 10 .

In some embodiments, the optical imaging system 10 satisfies the following relationship:

(L52p1-L52p2)/CT5<7;

Among them, please continue to refer to Figure 1, L52p1 represents the maximum vertical distance from the intersection of the fringe field of view and the image side of the fifth lens L5 to the optical axis, L52p2 represents the minimum distance from the intersection of the fringe field of view and the image side of the fifth lens L5 to the optical axis The vertical distance, CT5 is the distance between the object side S9 of the fifth lens L5 and the image side S10 of the fifth lens L5 on the optical axis.

Satisfying the above relationship can make the fifth lens L5 easier to process and shape, and improve the performance of the lens. However, when (L52p1-L52p2)/CT5 does not satisfy the above relational expression, the processing and molding of the fifth lens L5 are difficult and the cost is high.

In some embodiments, the optical imaging system 10 satisfies the following relationship:

TTL/Imgh<1.3;

TTL is the distance on the optical axis from the object side S1 of the first lens L1 to the image plane S17 of the optical imaging system 10 , and Imgh is half of the image height corresponding to the maximum angle of view of the optical imaging system 10 .

Satisfying the above relational expression can make the optical imaging system 10 have ultra-thin characteristics and meet the requirement of miniaturization. However, when the TTL/Imgh does not satisfy the above-mentioned relational expression, the overall length of the optical imaging system 10 is large, which is not conducive to realizing the requirement of miniaturization.

In some embodiments, the optical imaging system 10 satisfies the following relationship:

1.0<TTL/f<1.2;

Wherein, f is the effective focal length of the optical imaging system 10 , and TTL is the distance on the optical axis from the object side surface S1 of the first lens L1 to the image surface S17 of the optical imaging system 10 .

Satisfying the above-mentioned relational expression can realize miniaturization design requirements, and at the same time satisfy the high-definition optical performance, the effective focal length of the optical imaging system 10 matches the structure. However, when TTL/f≤1.0, the optical length of the optical imaging system 10 is too short, which will increase the sensitivity of the system and make it difficult to correct aberrations; when TTL/f≥1.2, the optical length of the optical imaging system 10 is too long , it will cause the angle of the chief ray of light entering the image plane S17 to be too large, which does not match the angle of the chief ray of the photosensitive element.

In some embodiments, the optical imaging system 10 satisfies the following relationship:

f*tan(HFOV)>6mm;

Wherein, f is the effective focal length of the optical imaging system 10 , and HFOV is half of the maximum angle of view of the optical imaging system 10 .

By satisfying the above relationship, the optical imaging system 10 can have the characteristics of a large image plane, so that the optical imaging system 10 can have the characteristics of high pixels and high definition. However, when f*tan(HFOV) does not satisfy the above relationship, the image plane of the optical imaging system 10 is small, so that the pixels and the resolution of the optical imaging system 10 are both low.

first embodiment

Referring to FIGS. 2 and 3 , the optical imaging system 10 of the first embodiment sequentially includes a diaphragm STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with positive refractive power, the seventh lens L7 with negative refractive power, and the infrared Filter L8.

Wherein, the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is near the optical axis. Concave surface; the object side S5 of the third lens L3 is a convex surface at the near optical axis, and the image side S6 is a convex surface at the near optical axis; the object side S7 of the fourth lens L4 is a concave surface at the near optical axis, and the image side S8 is a near optical axis. Convex; the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is at the near optical axis. Concave surface; the object side surface S13 of the seventh lens L7 is a convex surface near the optical axis, and the image side surface S14 is a concave surface near the optical axis.

The object side S1 of the first lens L1 is convex near the circumference, and the image side S2 is convex near the circumference; the object side S3 of the second lens L2 is convex near the circumference, and the image side S4 is concave near the circumference; the third lens L3 The object side S5 near the circumference is a concave surface, and the near circumference of the image side S6 is a convex surface; the object side S7 of the fourth lens L4 is a concave surface near the circumference, and the near circumference of the image side S8 is a convex surface; the object side S9 of the fifth lens L5 The near circumference is concave, and the near circumference of the image side S10 is convex; the object side S11 of the sixth lens L6 is concave near the circumference, and the near circumference of the image side S12 is convex; the object side S13 of the seventh lens L7 is near the circumference. The concave surface, like the side surface S14, is convex near the circumference.

The reference wavelength of the focal length in the first embodiment is 555 nm, the reference wavelength of the refractive index and the Abbe number is 587 nm, and the optical imaging system 10 in the first embodiment satisfies the conditions of the following table. The elements from the object plane to the image plane S17 are sequentially arranged in the order of the elements from top to bottom in Table 1. Surface numbers 1 and 2 are the object side S1 and the image side S2 of the first lens L1 respectively, that is, in the same lens, the surface with the smaller surface number is the object side, and the surface with the larger surface number is the image side. The Y radius in Table 1 is the curvature radius of the object side or image side of the corresponding surface number at the optical axis. The first value in the "thickness" parameter column of the first lens L1 is the thickness of the lens on the optical axis, and the second value is the distance from the image side of the lens to the object side of the following lens on the optical axis. Table 2 is a table of relevant parameters of the aspheric surfaces of each lens in Table 1, wherein K is the conic constant, and Ai is the coefficient corresponding to the i-th high-order term in the aspheric surface type formula.

Table 1

Table 2

face number 1 2 3 4 5 6 7

K -7.38E+00 -3.85E+00 6.36E+01 9.32E+00 3.77E+01 9.80E+01 -9.80E+01 A4 8.18E-02 -1.67E-02 -2.69E-02 -1.69E-02 -1.31E-02 -6.18E-03 -3.09E-02 A6 -4.12E-02 9.95E-03 -2.37E-03 3.22E-02 -7.77E-03 -2.35E-02 1.46E-02 A8 2.88E-02 -1.88E-02 4.39E-02 -6.20E-02 1.36E-02 3.60E-02 -7.04E-02 A10 -1.76E-02 2.14E-02 -7.40E-02 1.21E-01 -3.34E-02 -6.36E-02 1.16E-01 A12 8.98E-03 -1.30E-02 7.69E-02 -1.35E-01 5.03E-02 6.92E-02 -1.18E-01 A14 -3.64E-03 3.55E-03 -5.02E-02 8.87E-02 -4.79E-02 -4.48E-02 7.88E-02 A16 1.07E-03 -9.87E-08 1.98E-02 -3.28E-02 2.71E-02 1.68E-02 -3.25E-02 A18 -1.95E-04 -2.07E-04 -4.28E-03 6.01E-03 -8.42E-03 -3.35E-03 7.50E-03 A20 1.53E-05 3.15E-05 3.90E-04 -3.54E-04 1.11E-03 2.77E-04 -7.36E-04 face number 8 9 10 11 12 13 14 K -9.80E+01 6.57E+00 4.98E+00 -8.80E-01 1.42E+01 -1.39E+01 -9.81E+00 A4 -3.23E-02 -4.35E-02 -6.63E-02 -3.07E-02 2.15E-03 -9.63E-02 -4.26E-02 A6 1.55E-02 2.44E-02 2.83E-02 2.78E-03 -4.65E-03 3.23E-02 1.03E-02 A8 -3.46E-02 -1.66E-02 -1.03E-02 -3.09E-03 5.72E-04 -7.16E-03 -1.60E-03 A10 3.56E-02 7.33E-03 1.76E-03 2.17E-03 1.58E-04 1.09E-03 1.41E-04 A12 -2.16E-02 -3.16E-03 -1.36E-04 -9.31E-04 -1.01E-04 -1.08E-04 -5.11E-06 A14 8.73E-03 1.20E-03 3.06E-05 2.16E-04 2.18E-05 6.93E-06 -1.73E-07 A16 -2.27E-03 -2.94E-04 -9.27E-06 -2.67E-05 -2.29E-06 -2.72E-07 2.39E-08 A18 3.41E-04 3.89E-05 1.10E-06 1.66E-06 1.19E-07 5.98E-09 -8.48E-10 A20 -2.23E-05 -2.09E-06 -4.49E-08 -4.15E-08 -2.41E-09 -5.63E-11 1.05E-11

Second Embodiment

Referring to FIGS. 4 and 5 , the optical imaging system 20 of the second embodiment sequentially includes a diaphragm STO, a first lens L1 with a positive refractive power, a second lens L2 with a negative refractive power, and a The third lens L3 with negative refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with positive refractive power, the seventh lens L7 with negative refractive power, and the infrared Filter L8.

Wherein, the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is near the optical axis. Concave surface; the object side S5 of the third lens L3 is concave at the near optical axis, and the near optical axis of the image side S6 is convex; the object side S7 of the fourth lens L4 is concave at the near optical axis, and the near optical axis of the image side S8 is concave. Convex; the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is at the near optical axis. Concave surface; the object side surface S13 of the seventh lens L7 is a convex surface near the optical axis, and the image side surface S14 is a concave surface near the optical axis.

The object side S1 of the first lens L1 is convex near the circumference, and the image side S2 is convex near the circumference; the object side S3 of the second lens L2 is convex near the circumference, and the image side S4 is concave near the circumference; the third lens L3 The object side S5 near the circumference is a concave surface, and the near circumference of the image side S6 is a convex surface; the object side S7 of the fourth lens L4 is a concave surface near the circumference, and the near circumference of the image side S8 is a convex surface; the object side S9 of the fifth lens L5 The near circumference is concave, and the near circumference of the image side S10 is convex; the object side S11 of the sixth lens L6 is concave near the circumference, and the near circumference of the image side S12 is convex; the object side S13 of the seventh lens L7 is near the circumference. The concave surface, like the side surface S14, is convex near the circumference.

In the second embodiment, the reference wavelength of the focal length is 555 nm, the reference wavelength of the refractive index and the Abbe number is 587 nm, and the reference wavelength is 555 nm. The parameters of the optical imaging system 20 are given in Tables 3 and 4, and the parameters of the parameters are shown in Tables 3 and 4. The definition can be derived from the second embodiment, and details are not repeated here.

table 3

Table 4

face number 1 2 3 4 5 6 7 K -7.47E+00 -3.43E+00 6.14E+01 1.32E+01 5.53E+01 -9.86E+02 -1.20E+04 A4 8.70E-02 -1.13E-02 -4.81E-02 2.12E-04 3.04E-02 -1.54E-02 -3.34E-02 A6 -8.67E-02 -1.53E-02 1.25E-01 -9.41E-02 -2.27E-01 2.71E-02 4.38E-02 A8 1.60E-01 4.24E-02 -3.12E-01 3.80E-01 5.89E-01 -1.71E-01 -1.66E-01

A10 -2.16E-01 -6.05E-02 4.94E-01 -7.37E-01 -9.50E-01 3.23E-01 2.56E-01 A12 1.85E-01 5.12E-02 -4.78E-01 8.69E-01 9.74E-01 -3.39E-01 -2.38E-01 A14 -9.85E-02 -2.65E-02 2.87E-01 -6.38E-01 -6.37E-01 2.17E-01 1.45E-01 A16 3.17E-02 8.16E-03 -1.04E-01 2.85E-01 2.58E-01 -8.41E-02 -5.60E-02 A18 -5.61E-03 -1.37E-03 2.09E-02 -7.12E-02 -5.92E-02 1.82E-02 1.23E-02 A20 4.21E-04 9.76E-05 -1.79E-03 7.63E-03 5.91E-03 -1.68E-03 -1.16E-03 face number 8 9 10 11 12 13 14 K -2.28E+01 7.77E+00 4.90E+00 -8.80E-01 2.36E+01 -1.98E+01 -1.00E+01 A4 -3.31E-02 -4.78E-02 -6.94E-02 -2.99E-02 4.63E-03 -9.71E-02 -4.31E-02 A6 4.16E-02 3.77E-02 3.41E-02 1.59E-03 -6.23E-03 3.26E-02 1.03E-02 A8 -1.02E-01 -3.24E-02 -1.55E-02 -2.25E-03 1.35E-03 -7.22E-03 -1.58E-03 A10 1.21E-01 1.88E-02 4.68E-03 1.86E-03 -1.12E-04 1.10E-03 1.31E-04 A12 -8.40E-02 -8.36E-03 -1.13E-03 -8.66E-04 -3.92E-05 -1.11E-04 -3.22E-06 A14 3.65E-02 2.67E-03 2.34E-04 2.08E-04 1.29E-05 7.18E-06 -3.61E-07 A16 -9.74E-03 -5.47E-04 -3.33E-05 -2.61E-05 -1.53E-06 -2.86E-07 3.43E-08 A18 1.45E-03 6.29E-05 2.63E-06 1.64E-06 8.33E-08 6.40E-09 -1.14E-09 A20 -9.31E-05 -3.04E-06 -8.52E-08 -4.09E-08 -1.73E-09 -6.13E-11 1.39E-11

Third Embodiment

Referring to FIGS. 6 and 7 , the optical imaging system 30 of the third embodiment sequentially includes a diaphragm STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a The third lens L3 with positive refractive power, the fourth lens L4 with positive refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with positive refractive power, the seventh lens L7 with negative refractive power, and the infrared Filter L8.

Wherein, the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is near the optical axis. Concave surface; the object side S5 of the third lens L3 is a convex surface at the near optical axis, and the image side S6 is a convex surface at the near optical axis; the object side S7 of the fourth lens L4 is a concave surface at the near optical axis, and the image side S8 is a near optical axis. Convex; the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is at the near optical axis. Concave surface; the object side surface S13 of the seventh lens L7 is a convex surface near the optical axis, and the image side surface S14 is a concave surface near the optical axis.

The object side S1 of the first lens L1 is convex near the circumference, and the image side S2 is convex near the circumference; the object side S3 of the second lens L2 is convex near the circumference, and the image side S4 is concave near the circumference; the third lens L3 The object side S5 near the circumference is a concave surface, and the near circumference of the image side S6 is a convex surface; the object side S7 of the fourth lens L4 is a concave surface near the circumference, and the near circumference of the image side S8 is a convex surface; the object side S9 of the fifth lens L5 The near circumference is concave, and the near circumference of the image side S10 is convex; the object side S11 of the sixth lens L6 is concave near the circumference, and the near circumference of the image side S12 is convex; the object side S13 of the seventh lens L7 is near the circumference. The concave surface, like the side surface S14, is convex near the circumference.

In the third embodiment, the reference wavelength of the focal length is 555 nm, the reference wavelength of the refractive index and the Abbe number is 587 nm, and the parameters of the optical imaging system 30 are given in Table 5 and Table 6.

table 5

Table 6

face number 1 2 3 4 5 6 7 K -7.44E+00 -3.37E+00 6.60E+01 1.01E+01 6.22E+01 -9.80E+01 9.80E+01 A4 8.15E-02 -1.70E-02 -2.84E-02 -1.67E-02 -1.21E-02 -1.10E-02 -3.37E-02 A6 -4.07E-02 8.24E-03 6.44E-03 3.03E-02 -1.63E-02 -1.58E-02 1.95E-02 A8 2.72E-02 -1.54E-02 1.92E-02 -4.99E-02 4.20E-02 2.08E-02 -7.97E-02 A10 -1.50E-02 2.10E-02 -2.84E-02 9.25E-02 -8.68E-02 -4.37E-02 1.28E-01 A12 6.72E-03 -1.68E-02 2.45E-02 -9.92E-02 1.14E-01 5.45E-02 -1.26E-01 A14 -2.44E-03 8.07E-03 -1.35E-02 5.99E-02 -9.66E-02 -3.82E-02 8.23E-02 A16 6.96E-04 -2.35E-03 4.49E-03 -1.88E-02 4.96E-02 1.47E-02 -3.41E-02 A18 -1.32E-04 3.89E-04 -7.94E-04 2.17E-03 -1.42E-02 -2.90E-03 8.04E-03

A20 1.09E-05 -2.89E-05 5.67E-05 9.89E-05 1.74E-03 2.24E-04 -8.16E-04 face number 8 9 10 11 12 13 14 K 6.40E+01 4.13E+00 4.95E+00 -9.22E-01 2.46E+01 -1.38E+00 -1.38E+00 A4 -2.85E-02 -4.01E-02 -6.30E-02 -2.84E-02 1.45E-03 -1.01E-01 -1.01E-01 A6 4.09E-03 1.92E-02 2.41E-02 1.98E-03 -3.53E-03 3.50E-02 3.50E-02 A8 -1.24E-02 -1.42E-02 -8.86E-03 -3.21E-03 -4.17E-05 -8.00E-03 -8.00E-03 A10 9.18E-03 7.91E-03 1.87E-03 2.32E-03 3.40E-04 1.25E-03 1.25E-03 A12 -8.04E-04 -4.21E-03 -3.30E-04 -9.88E-04 -1.36E-04 -1.28E-04 -1.28E-04 A14 -1.83E-03 1.67E-03 8.59E-05 2.28E-04 2.63E-05 8.35E-06 8.35E-06 A16 9.97E-04 -4.06E-04 -1.68E-05 -2.82E-05 -2.66E-06 -3.35E-07 -3.35E-07 A18 -2.12E-04 5.31E-05 1.62E-06 1.76E-06 1.35E-07 7.51E-09 7.51E-09 A20 1.66E-05 -2.83E-06 -5.92E-08 -4.40E-08 -2.72E-09 -7.21E-11 -7.21E-11

Fourth Embodiment

Referring to FIGS. 8 and 9 , the optical imaging system 40 of the fourth embodiment sequentially includes a diaphragm STO, a first lens L1 with a positive refractive power, a second lens L2 with a negative refractive power, and a The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with positive refractive power, the sixth lens L6 with positive refractive power, the seventh lens L7 with negative refractive power, and the infrared Filter L8.

Wherein, the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is near the optical axis. Concave surface; the object side S5 of the third lens L3 is a convex surface at the near optical axis, and the image side S6 is a convex surface at the near optical axis; the object side S7 of the fourth lens L4 is a concave surface at the near optical axis, and the image side S8 is a near optical axis. Convex; the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is at the near optical axis. Concave surface; the object side surface S13 of the seventh lens L7 is a convex surface near the optical axis, and the image side surface S14 is a concave surface near the optical axis.

The object side S1 of the first lens L1 is convex near the circumference, and the image side S2 is convex near the circumference; the object side S3 of the second lens L2 is convex near the circumference, and the image side S4 is concave near the circumference; the third lens L3 The object side S5 near the circumference is a concave surface, and the near circumference of the image side S6 is a convex surface; the object side S7 of the fourth lens L4 is a concave surface near the circumference, and the near circumference of the image side S8 is a convex surface; the object side S9 of the fifth lens L5 The near circumference is concave, and the near circumference of the image side S10 is convex; the object side S11 of the sixth lens L6 is concave near the circumference, and the near circumference of the image side S12 is convex; the object side S13 of the seventh lens L7 is near the circumference. The concave surface, like the side surface S14, is convex near the circumference.

In the fourth embodiment, the reference wavelength of the focal length is 555 nm, the reference wavelength of the refractive index and the Abbe number is 587 nm, and the parameters of the optical imaging system 40 are given in Tables 7 and 8.

Table 7

Table 8

face number 1 2 3 4 5 6 7 K -7.43E+00 -2.82E+00 6.81E+01 9.77E+00 7.02E-01 -2.47E-09 -9.77E+01 A4 8.12E-02 -1.40E-02 -2.67E-02 -1.44E-02 -1.16E-02 -5.66E-03 -3.48E-02 A6 -4.06E-02 -4.77E-03 4.45E-03 2.49E-02 -2.07E-02 -4.08E-02 1.13E-02 A8 2.78E-02 2.16E-02 2.45E-02 -3.70E-02 5.27E-02 8.78E-02 -4.46E-02 A10 -1.59E-02 -3.98E-02 -4.15E-02 7.06E-02 -1.04E-01 -1.47E-01 7.32E-02 A12 7.05E-03 4.31E-02 4.16E-02 -7.68E-02 1.30E-01 1.53E-01 -7.43E-02 A14 -2.23E-03 -2.80E-02 -2.61E-02 4.71E-02 -1.04E-01 -9.94E-02 4.85E-02 A16 4.70E-04 1.06E-02 9.82E-03 -1.51E-02 5.06E-02 3.88E-02 -1.96E-02 A18 -6.06E-05 -2.18E-03 -2.01E-03 1.88E-03 -1.38E-02 -8.30E-03 4.50E-03 A20 3.02E-06 1.86E-04 1.73E-04 5.14E-05 1.61E-03 7.42E-04 -4.53E-04 face number 8 9 10 11 12 13 14 K -3.39E+01 -6.54E-01 5.97E+00 -6.70E-01 -8.04E+01 -6.71E+00 -9.59E+00 A4 -3.81E-02 -3.79E-02 -4.55E-02 -1.72E-02 3.86E-03 -1.02E-01 -4.85E-02 A6 1.97E-02 1.79E-02 9.38E-03 -6.97E-03 -6.14E-03 3.52E-02 1.31E-02 A8 -3.33E-02 -1.86E-02 -1.82E-03 1.84E-03 1.36E-03 -8.03E-03 -2.30E-03

A10 3.44E-02 1.43E-02 2.38E-05 1.97E-04 -1.35E-04 1.26E-03 2.37E-04 A12 -2.15E-02 -8.02E-03 -9.92E-05 -3.69E-04 -2.92E-05 -1.29E-04 -1.25E-05 A14 8.62E-03 2.90E-03 8.48E-05 1.14E-04 1.09E-05 8.47E-06 1.36E-07 A16 -2.09E-03 -6.31E-04 -2.00E-05 -1.56E-05 -1.32E-06 -3.41E-07 1.87E-08 A18 2.77E-04 7.48E-05 1.97E-06 1.02E-06 7.14E-08 7.69E-09 -8.84E-10 A20 -1.52E-05 -3.69E-06 -7.16E-08 -2.59E-08 -1.47E-09 -7.41E-11 1.22E-11

Fifth Embodiment

10 and FIG. 11 , the optical imaging system 50 of the fifth embodiment sequentially includes a diaphragm STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with positive refractive power, the sixth lens L6 with negative refractive power, the seventh lens L7 with negative refractive power, and the infrared Filter L8.

Wherein, the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is near the optical axis. Concave surface; the object side S5 of the third lens L3 is a convex surface at the near optical axis, and the image side S6 is a convex surface at the near optical axis; the object side S7 of the fourth lens L4 is a concave surface at the near optical axis, and the image side S8 is a near optical axis. Convex; the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is at the near optical axis. Concave surface; the object side surface S13 of the seventh lens L7 is a convex surface near the optical axis, and the image side surface S14 is a concave surface near the optical axis.

The object side S1 of the first lens L1 is convex near the circumference, and the image side S2 is convex near the circumference; the object side S3 of the second lens L2 is convex near the circumference, and the image side S4 is concave near the circumference; the third lens L3 The object side S5 near the circumference is a concave surface, and the near circumference of the image side S6 is a convex surface; the object side S7 of the fourth lens L4 is a concave surface near the circumference, and the near circumference of the image side S8 is a convex surface; the object side S9 of the fifth lens L5 The near circumference is concave, and the near circumference of the image side S10 is convex; the object side S11 of the sixth lens L6 is concave near the circumference, and the near circumference of the image side S12 is convex; the object side S13 of the seventh lens L7 is near the circumference. The concave surface, like the side surface S14, is convex near the circumference.

In the fifth embodiment, the reference wavelength of the focal length is 555 nm, the reference wavelength of the refractive index and the Abbe number is 587 nm, and the parameters of the optical imaging system 50 are given in Table 9 and Table 10.

Table 9

Table 10

face number 1 2 3 4 5 6 7 K -7.36E+00 -2.84E+00 6.33E+01 1.01E+01 -2.76E+00 -9.80E+01 -9.80E+01 A4 8.20E-02 -1.26E-02 -2.53E-02 -1.40E-02 -1.25E-02 -8.10E-03 -4.35E-02 A6 -4.13E-02 -5.30E-03 3.51E-03 2.53E-02 -2.08E-02 -4.68E-02 2.92E-02 A8 2.95E-02 2.01E-02 2.21E-02 -4.10E-02 6.20E-02 1.22E-01 -7.56E-02 A10 -1.90E-02 -3.67E-02 -3.74E-02 7.66E-02 -1.34E-01 -2.17E-01 1.19E-01 A12 1.05E-02 3.94E-02 3.84E-02 -8.04E-02 1.78E-01 2.34E-01 -1.18E-01 A14 -4.52E-03 -2.54E-02 -2.46E-02 4.74E-02 -1.47E-01 -1.59E-01 7.35E-02 A16 1.34E-03 9.60E-03 9.53E-03 -1.42E-02 7.34E-02 6.52E-02 -2.75E-02 A18 -2.36E-04 -1.97E-03 -2.02E-03 1.41E-03 -2.03E-02 -1.48E-02 5.72E-03 A20 1.76E-05 1.68E-04 1.80E-04 1.28E-04 2.37E-03 1.42E-03 -5.22E-04 face number 8 9 10 11 12 13 14 K -9.80E+01 -2.49E+00 9.30E+00 4.33E-01 -6.03E+01 -4.59E+01 -8.29E+00 A4 -4.50E-02 -2.23E-02 -2.16E-02 -1.98E-02 -2.12E-02 -9.77E-02 -4.38E-02 A6 3.36E-02 3.70E-03 2.33E-03 -1.25E-03 1.85E-02 3.43E-02 1.22E-02 A8 -5.89E-02 -7.50E-03 -3.37E-03 1.62E-03 -9.59E-03 -7.95E-03 -2.41E-03 A10 6.74E-02 5.00E-03 1.23E-03 -1.96E-03 2.60E-03 1.24E-03 2.87E-04 A12 -4.79E-02 -2.37E-03 -2.55E-04 6.66E-04 -4.43E-04 -1.25E-04 -1.90E-05 A14 2.14E-02 8.00E-04 5.15E-05 -1.02E-04 4.92E-05 8.05E-06 5.83E-07 A16 -5.67E-03 -1.75E-04 -8.29E-06 7.99E-06 -3.42E-06 -3.18E-07 8.12E-10 A18 8.10E-04 2.16E-05 7.27E-07 -3.04E-07 1.34E-07 7.03E-09 -4.93E-10 A20 -4.78E-05 -1.12E-06 -2.50E-08 4.26E-09 -2.22E-09 -6.66E-11 8.56E-12

Sixth Embodiment

Referring to FIGS. 12 and 13 , the optical imaging system 60 of the sixth embodiment sequentially includes a diaphragm STO, a first lens L1 with a positive refractive power, a second lens L2 with a negative refractive power, and a The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with positive refractive power, the seventh lens L7 with negative refractive power, and the infrared Filter L8.

Wherein, the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is near the optical axis. Concave surface; the object side S5 of the third lens L3 is a convex surface at the near optical axis, and the image side S6 is a convex surface at the near optical axis; the object side S7 of the fourth lens L4 is a concave surface at the near optical axis, and the image side S8 is a near optical axis. Convex; the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is near the optical axis. Concave surface; the object side surface S13 of the seventh lens L7 is a convex surface near the optical axis, and the image side surface S14 is a concave surface near the optical axis.

The object side S1 of the first lens L1 is convex near the circumference, and the image side S2 is convex near the circumference; the object side S3 of the second lens L2 is convex near the circumference, and the image side S4 is concave near the circumference; the third lens L3 The object side S5 near the circumference is a concave surface, and the near circumference of the image side S6 is a convex surface; the object side S7 of the fourth lens L4 is a concave surface near the circumference, and the near circumference of the image side S8 is a convex surface; the object side S9 of the fifth lens L5 The near circumference is concave, and the near circumference of the image side S10 is convex; the object side S11 of the sixth lens L6 is concave near the circumference, and the near circumference of the image side S12 is convex; the object side S13 of the seventh lens L7 is near the circumference. The concave surface, like the side surface S14, is convex near the circumference.

In the sixth embodiment, the reference wavelength of the focal length is 555 nm, the reference wavelength of the refractive index and the Abbe number is 587 nm, and the parameters of the optical imaging system 60 are given in Table 11 and Table 12.

Table 11

Table 12

face number 1 2 3 4 5 6 7 K -7.34E+00 -3.44E+00 6.53E+01 9.57E+00 3.08E+01 9.80E+01 -9.80E+01 A4 8.21E-02 -1.57E-02 -2.70E-02 -1.54E-02 -1.11E-02 -5.02E-03 -2.94E-02 A6 -4.31E-02 3.95E-03 7.79E-04 2.71E-02 -1.44E-02 -2.70E-02 5.41E-03 A8 3.44E-02 -4.18E-03 3.32E-02 -4.85E-02 2.59E-02 4.38E-02 -4.56E-02 A10 -2.54E-02 2.69E-03 -5.25E-02 1.00E-01 -4.61E-02 -7.89E-02 7.52E-02 A12 1.55E-02 1.23E-03 5.05E-02 -1.19E-01 5.57E-02 9.07E-02 -7.39E-02 A14 -6.98E-03 -2.88E-03 -3.07E-02 8.31E-02 -4.60E-02 -6.36E-02 4.83E-02 A16 2.09E-03 1.63E-03 1.13E-02 -3.31E-02 2.39E-02 2.62E-02 -2.00E-02 A18 -3.67E-04 -4.02E-04 -2.27E-03 6.78E-03 -7.06E-03 -5.80E-03 4.74E-03 A20 2.75E-05 3.76E-05 1.92E-04 -5.09E-04 9.04E-04 5.34E-04 -4.87E-04 face number 8 9 10 11 12 13 14 K -9.80E+01 5.68E+00 5.18E+00 -9.87E-01 -9.80E+01 -4.23E+01 -9.56E+00 A4 -3.15E-02 -4.24E-02 -6.39E-02 -2.83E-02 2.64E-03 -9.82E-02 -4.59E-02 A6 1.16E-02 2.27E-02 2.44E-02 3.91E-04 -5.38E-03 3.30E-02 1.21E-02 A8 -2.78E-02 -1.78E-02 -8.70E-03 -1.37E-03 1.28E-03 -7.32E-03 -2.08E-03 A10 2.92E-02 1.02E-02 1.63E-03 1.38E-03 -1.45E-04 1.12E-03 2.13E-04 A12 -1.72E-02 -5.16E-03 -2.40E-04 -7.16E-04 -3.14E-05 -1.12E-04 -1.16E-05 A14 6.54E-03 1.93E-03 7.32E-05 1.82E-04 1.25E-05 7.23E-06 1.70E-07 A16 -1.54E-03 -4.48E-04 -1.65E-05 -2.34E-05 -1.57E-06 -2.86E-07 1.35E-08 A18 2.02E-04 5.66E-05 1.71E-06 1.50E-06 8.74E-08 6.35E-09 -6.84E-10 A20 -1.13E-05 -2.95E-06 -6.52E-08 -3.80E-08 -1.85E-09 -6.04E-11 9.52E-12

Seventh Embodiment

Referring to FIGS. 14 and 15 , the optical imaging system 70 of the seventh embodiment sequentially includes a diaphragm STO, a first lens L1 with positive refractive power, a second lens L2 with negative refractive power, and a The third lens L3 with positive refractive power, the fourth lens L4 with negative refractive power, the fifth lens L5 with negative refractive power, the sixth lens L6 with positive refractive power, the seventh lens L7 with negative refractive power, and the infrared Filter L8.

Wherein, the object side S1 of the first lens L1 is convex at the near optical axis, and the image side S2 is concave at the near optical axis; the object side S3 of the second lens L2 is convex at the near optical axis, and the image side S4 is near the optical axis. Concave surface; the object side S5 of the third lens L3 is a convex surface at the near optical axis, and the image side S6 is a convex surface at the near optical axis; the object side S7 of the fourth lens L4 is a concave surface at the near optical axis, and the image side S8 is a near optical axis. Convex; the object side S9 of the fifth lens L5 is convex at the near optical axis, and the image side S10 is concave at the near optical axis; the object side S11 of the sixth lens L6 is convex at the near optical axis, and the image side S12 is at the near optical axis. Concave surface; the object side surface S13 of the seventh lens L7 is a convex surface near the optical axis, and the image side surface S14 is a concave surface near the optical axis.

The object side S1 of the first lens L1 is convex near the circumference, and the image side S2 is convex near the circumference; the object side S3 of the second lens L2 is convex near the circumference, and the image side S4 is concave near the circumference; the third lens L3 The object side S5 near the circumference is a concave surface, and the near circumference of the image side S6 is a convex surface; the object side S7 of the fourth lens L4 is a concave surface near the circumference, and the near circumference of the image side S8 is a convex surface; the object side S9 of the fifth lens L5 The near circumference is concave, and the near circumference of the image side S10 is convex; the object side S11 of the sixth lens L6 is concave near the circumference, and the near circumference of the image side S12 is convex; the object side S13 of the seventh lens L7 is near the circumference. The concave surface, like the side surface S14, is convex near the circumference.

In the seventh embodiment, the reference wavelength of the focal length is 555 nm, the reference wavelength of the refractive index and the Abbe number is 587 nm, and the parameters of the optical imaging system 70 are given in Table 13 and Table 14.

Table 13

Table 14

face number 1 2 3 4 5 6 7 K -7.31E+00 -3.36E+00 6.51E+01 9.56E+00 5.04E+01 9.80E+01 -4.90E+01 A4 8.48E-02 -1.41E-02 -2.76E-02 -1.38E-02 -5.33E-03 -1.97E-03 -3.34E-02 A6 -5.66E-02 -9.92E-03 5.32E-03 1.06E-02 -4.69E-02 -4.65E-02 3.13E-02 A8 6.93E-02 4.81E-02 1.76E-02 1.98E-02 1.13E-01 9.68E-02 -1.19E-01 A10 -7.76E-02 -9.62E-02 -2.47E-02 -5.30E-02 -1.88E-01 -1.68E-01 1.95E-01 A12 6.27E-02 1.06E-01 2.16E-02 8.22E-02 2.02E-01 1.86E-01 -1.95E-01 A14 -3.30E-02 -6.86E-02 -1.24E-02 -7.59E-02 -1.42E-01 -1.28E-01 1.25E-01 A16 1.07E-02 2.57E-02 4.40E-03 4.10E-02 6.28E-02 5.26E-02 -5.00E-02 A18 -1.91E-03 -5.17E-03 -8.33E-04 -1.19E-02 -1.59E-02 -1.19E-02 1.12E-02 A20 1.44E-04 4.32E-04 6.38E-05 1.47E-03 1.77E-03 1.13E-03 -1.09E-03 face number 8 9 10 11 12 13 14 K 7.11E-13 4.18E+00 5.15E+00 -9.49E-01 -4.61E+01 -6.20E+01 -9.69E+00 A4 -3.39E-02 -4.48E-02 -6.84E-02 -2.97E-02 3.79E-03 -1.05E-01 -4.61E-02 A6 2.59E-02 2.43E-02 3.12E-02 3.76E-03 -4.02E-03 3.70E-02 1.19E-02 A8 -5.84E-02 -1.60E-02 -1.41E-02 -4.79E-03 -4.39E-04 -8.64E-03 -2.01E-03 A10 6.60E-02 6.71E-03 4.49E-03 3.03E-03 5.95E-04 1.37E-03 2.01E-04 A12 -4.47E-02 -2.78E-03 -1.21E-03 -1.17E-03 -2.04E-04 -1.43E-04 -9.93E-06 A14 1.94E-02 1.03E-03 2.78E-04 2.55E-04 3.66E-05 9.47E-06 1.64E-08 A16 -5.20E-03 -2.57E-04 -4.21E-05 -3.06E-05 -3.54E-06 -3.85E-07 2.21E-08 A18 7.82E-04 3.51E-05 3.45E-06 1.88E-06 1.76E-07 8.76E-09 -9.42E-10 A20 -5.06E-05 -1.97E-06 -1.14E-07 -4.64E-08 -3.49E-09 -8.52E-11 1.27E-11

Table 15 shows (L71p1-L71p2)-(L62p1-L62p2), Fno, R6, (L52p1-L52p2)/CT5, TTL/Imgh, TTL/ Values of f and f*tan(HFOV).

Form 15

  (L71p1-L71p2)-(L62p1-L62p2) Fno R6(mm) (L52p1-L52p2)/CT5 Example 1 0.83 1.89 6.791 6.79 Embodiment 2 0.83 1.89 6.302 6.30 Embodiment 3 0.80 1.89 6.664 6.66 Embodiment 4 0.76 1.89 6.542 6.54 Embodiment 5 0.70 1.89 6.625 6.63 Embodiment 6 0.85 1.92 6.699 6.70

Embodiment 7 0.80 1.91 6.638 6.64   TTL/Imgh TTL/f f*tan(HFOV) | Example 1 1.17 1.13 6.08   Embodiment 2 1.17 1.12 6.08   Embodiment 3 1.17 1.13 6.07   Embodiment 4 1.17 1.13 6.07   Embodiment 5 1.17 1.13 6.06   Embodiment 6 1.17 1.13 6.01   Embodiment 7 1.16 1.12 6.08  

Referring to FIG. 16 , the imaging module 100 according to the embodiment of the present invention includes an optical imaging system 10 and a photosensitive element 80 , and the photosensitive element 80 is disposed on the image side of the optical imaging system 10 .

Specifically, the photosensitive element 20 can be a complementary metal oxide semiconductor (CMOS, Complementary Metal Oxide Semiconductor) image sensor or a charge-coupled device (CCD, Charge-coupled Device).

The optical imaging system 10 in the imaging module 100 of the embodiment of the present invention can realize the shooting function of large aperture and large image surface through the mixed arrangement of seven lenses with refractive power and the reasonable combination design of the convex and concave surfaces of each lens. It can ensure that the optical imaging system 10 has low sensitivity, good processing technology, and high imaging quality while achieving miniaturization; and, satisfying the above relationship, can reasonably control the seventh lens L7 and the sixth lens L7 The difference between the clear apertures of the lens L6 can effectively reduce the discontinuity between the two lens structures, so that the light in the edge field of view is smoother, and the processing of the lens and the stability of the production are easy.

Please continue to refer to FIG. 16 , the electronic device 1000 according to the embodiment of the present invention includes a casing 200 and an imaging module 100 , and the imaging module 100 is installed on the casing 200 for acquiring images.

The electronic device 1000 in the embodiment of the present invention includes, but is not limited to, a smartphone, a car camera lens, a monitoring lens, a tablet computer, a notebook computer, an electronic book reader, a portable multimedia player (PMP), a portable phone, a video phone, Imaging-enabled electronic devices such as digital still cameras, mobile medical devices, wearable devices, etc.

The optical imaging system 10 in the electronic device 1000 of the above-mentioned embodiment can realize the shooting function of a large aperture and a large image surface, and can ensure the optical The imaging system 10 has low sensitivity, good processing technology, and high imaging quality while achieving miniaturization; and, satisfying the above relationship, can reasonably control the seventh lens L7 and the sixth lens L6. The difference value of the clear aperture can effectively reduce the discontinuity of the two lens structures, so that the light of the edge field of view is smoother, and the processing of the lens and the stability of the production are easy.

It will be apparent to those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Accordingly, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the application is to be defined by the appended claims rather than the foregoing description, which is therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in this application.

Claims (10)

An optical imaging system, characterized in that, from the object side to the image side, it comprises: The first lens with positive refractive power, the object side near optical axis of the first lens is convex, and the image side near optical axis of the first lens is concave; The second lens with negative refractive power, the object side near optical axis of the second lens is convex, and the image side near optical axis of the second lens is concave; a third lens having refractive power; a fourth lens with refractive power; a fifth lens with refractive power; a sixth lens with refractive power; A seventh lens with negative refractive power, the image side near optical axis of the seventh lens is concave; The optical imaging system satisfies the following relationship: (L71p1-L71p2)-(L62p1-L62p2)<0.9mm; Wherein, L62p1 represents the maximum vertical distance from the intersection of the fringe field of view and the image side of the sixth lens to the optical axis, L62p2 represents the minimum vertical distance from the intersection of the fringe field of view and the image side of the sixth lens to the optical axis, L71p1 Represents the maximum vertical distance from the intersection of the fringe field of view and the object side of the seventh lens to the optical axis, L71p2 represents the minimum vertical distance from the intersection of the fringe field of view and the object side of the seventh lens to the optical axis, and the fringe view The field is the light beam that is incident and converges to the point furthest from the optical axis of the imaging plane of the optical imaging system. The optical imaging system according to claim 1, wherein the image side of the third lens is convex at the near-optical axis, the object side of the fourth lens is concave at the near-optical axis, and the fourth lens is concave. The image side near optical axis is convex, the object side near optical axis of the fifth lens is convex, the image side near optical axis of the fifth lens is concave, the object side low beam of the sixth lens The axis is a convex surface, and the image side surface of the sixth lens is a concave surface near the optical axis. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following relationship: Fno<2; Wherein, Fno is the aperture number of the optical imaging system. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following relationship: R6≤-1000mm; Wherein, R6 is the curvature radius of the image side surface of the third lens. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following relationship: (L52p1-L52p2)/CT5<7; Wherein, L52p1 represents the maximum vertical distance from the intersection of the fringe field of view and the image side of the fifth lens to the optical axis, L52p2 represents the minimum vertical distance from the intersection of the fringe field of view and the image side of the fifth lens to the optical axis, CT5 is the distance between the object side surface of the fifth lens and the image side surface of the fifth lens on the optical axis. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following relationship: TTL/Imgh<1.3; TTL is the distance from the object side of the first lens to the image plane of the optical imaging system on the optical axis, and Imgh is half of the image height corresponding to the maximum angle of view of the optical imaging system. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following relationship: 1.0<TTL/f<1.2; Wherein, f is the effective focal length of the optical imaging system, and TTL is the distance from the object side of the first lens to the image plane of the optical imaging system on the optical axis. The optical imaging system of claim 1, wherein the optical imaging system satisfies the following relationship: f*tan(HFOV)>6mm; Wherein, f is the effective focal length of the optical imaging system, and HFOV is half of the maximum angle of view of the optical imaging system. An imaging module, characterized in that, comprising: The optical imaging system of any one of claims 1 to 8; and A photosensitive element, the photosensitive element is arranged on the image side of the optical imaging system. An electronic device, comprising: the shell; and The imaging module of claim 9, wherein the imaging module is mounted on the casing.

Images