CN212905677U

CN212905677U - Image pickup lens assembly

Info

Publication number: CN212905677U
Application number: CN202021898181.1U
Authority: CN
Inventors: 黄林; 汤禹; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-04-06
Anticipated expiration: 2030-09-03

Abstract

The present application discloses a photographing lens assembly, sequentially comprising, from an object side to an image side along an optical axis: a first lens having a negative refractive power, an object side surface of which is a concave surface; a second lens having an optical power; a third lens having a positive optical power; a fourth lens having an optical power; a fifth lens having a positive refractive power, an object side surface of which is concave; a sixth lens having optical power; and a seventh lens having a negative optical power; wherein, the maximum field angle FOV of the camera lens group can satisfy: the FOV is more than or equal to 120.1 degrees; the maximum field angle FOV of the camera lens group and the total effective focal length f of the camera lens group can satisfy: 1 < f × tan (FOV/4) < 1.7.

Description

Image pickup lens assembly

Technical Field

The present application relates to the field of optical elements, and more particularly, to a photographing lens assembly.

Background

A camera module is generally installed in a portable device such as a mobile phone, so that the mobile phone has a camera function. The image pickup module is generally provided with an image sensor of a Charge-coupled Device (CCD) type or a Complementary Metal Oxide Semiconductor (CMOS) type, and a lens group. The image pickup lens group can collect light rays at the object side, imaging light rays travel along the light path of the image pickup lens group and irradiate an image sensor, and then the image sensor converts optical signals into electric signals to form image data.

The rapid development of the mobile phone camera module, especially the popularization of the large-size and high-pixel CMOS chip, makes mobile phone manufacturers have more stringent requirements for the imaging quality of the camera lens group. In addition, with the improvement of the performance and the reduction of the size of the CCD and the CMOS devices, higher requirements are also put forward for the high imaging quality of the associated camera lens group.

In order to satisfy imaging requirements, there is a need for a photographing lens group that can satisfy both a wide angle and high imaging quality.

SUMMERY OF THE UTILITY MODEL

The present application provides a photographing lens assembly, sequentially comprising, from an object side to an image side along an optical axis: a first lens having a negative refractive power, an object side surface of which is a concave surface; a second lens having an optical power; a third lens having a positive optical power; a fourth lens having an optical power; a fifth lens having a positive refractive power, an object side surface of which is concave; a sixth lens having optical power; and a seventh lens having a negative optical power; wherein, the maximum field angle FOV of the camera lens group can satisfy: the FOV is more than or equal to 120.1 degrees; the maximum field angle FOV of the camera lens group and the total effective focal length f of the camera lens group can satisfy: 1 < f × tan (FOV/4) < 1.7.

In one embodiment, the first lens has at least one aspherical mirror surface from the object-side surface to the image-side surface of the seventh lens.

In one embodiment, the effective focal length f5 of the fifth lens element and the total effective focal length f of the image capturing lens assembly satisfy: f/f5 is more than 0.5 and less than 1.0.

In one embodiment, the maximum effective radius DT31 of the object-side surface of the third lens and the maximum effective radius DT21 of the object-side surface of the second lens may satisfy: 0.5 < DT31/DT21 < 1.

In one embodiment, the separation distance T12 between the first lens and the second lens on the optical axis and the separation distance T23 between the second lens and the third lens on the optical axis may satisfy: 0.9 < T12/T23 < 1.4.

In one embodiment, the central thickness CT1 of the first lens on the optical axis and the central thickness CT2 of the second lens on the optical axis may satisfy: 1.5 < CT1/CT2 < 2.2.

In one embodiment, the radius of curvature R6 of the image-side surface of the third lens and the effective focal length f3 of the third lens may satisfy: 0 < | R6/f3| < 0.8.

In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the effective focal length f5 of the fifth lens may satisfy: 2.1 < (R9+ R10)/f5 is less than or equal to-1.57.

In one embodiment, the radius of curvature R1 of the object-side surface of the first lens element and the total effective focal length f of the image capturing lens assembly satisfy: -1.8 < R1/f < -1.2.

In one embodiment, the central thickness CT5 of the fifth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis may satisfy: 0.2 < CT6/CT5 < 0.7.

In one embodiment, the total effective focal length f of the image capturing lens group and the effective focal length f1 of the first lens element satisfy: f/f1 is more than or equal to-0.35 and less than or equal to 0.

In one embodiment, an on-axis distance SAG51 between an intersection of an object-side surface of the fifth lens and the optical axis to an effective radius vertex of the object-side surface of the fifth lens and an on-axis distance SAG61 between an intersection of an object-side surface of the sixth lens and the optical axis to an effective radius vertex of the object-side surface of the sixth lens may satisfy: 0.17 is less than or equal to SAG51/SAG61 is less than 0.6.

Another aspect of the present application provides an image capturing lens assembly, in order from an object side to an image side along an optical axis, comprising: a first lens having a negative refractive power, an object side surface of which is a concave surface; a second lens having an optical power; a third lens having a positive optical power; a fourth lens having an optical power; a fifth lens having a positive refractive power, an object side surface of which is concave; a sixth lens having optical power; and a seventh lens having a negative optical power; wherein, the maximum field angle FOV of the camera lens group can satisfy: the FOV is more than or equal to 120.1 degrees; the separation distance T12 between the first lens and the second lens on the optical axis and the separation distance T23 between the second lens and the third lens on the optical axis can satisfy: 0.9 < T12/T23 < 1.4.

In one embodiment, the maximum field angle FOV of the imaging lens group and the total effective focal length f of the imaging lens group may satisfy: 1 < f × tan (FOV/4) < 1.7.

This application has adopted seven lens, through the focal power of rational distribution each lens, face type, the central thickness of each lens and the epaxial interval between each lens etc for above-mentioned camera lens group has at least one beneficial effect such as miniaturization, wide angle, high imaging quality, formation of image clarity. The miniaturized camera lens group is suitable for being used as a rear lens of a mobile phone; the wide-angle type camera lens group has the characteristics of large visual angle and wide visual field, the range of the scenery observed at a certain viewpoint is not large as that observed by human eyes at the same viewpoint, and further, the wide-angle type camera lens group can show a quite large clear range and can emphasize the perspective effect of pictures.

Drawings

Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 shows a schematic configuration diagram of a photographing lens group according to embodiment 1 of the present application; fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the image capturing lens group of embodiment 1;

fig. 3 shows a schematic configuration diagram of a photographing lens group according to embodiment 2 of the present application; fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the image capturing lens group of embodiment 2;

fig. 5 is a schematic view showing the structure of a photographing lens group according to embodiment 3 of the present application; fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the image capturing lens group of embodiment 3;

fig. 7 is a schematic view showing the structure of a photographing lens group according to embodiment 4 of the present application; fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 4;

fig. 9 is a schematic view showing the structure of a photographing lens group according to embodiment 5 of the present application; fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 5;

fig. 11 is a schematic view showing the structure of a photographing lens group according to embodiment 6 of the present application; fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image taking lens group of embodiment 6;

fig. 13 is a schematic view showing the structure of a photographing lens group according to embodiment 7 of the present application; fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 7;

fig. 15 is a schematic view showing the structure of a photographing lens group according to embodiment 8 of the present application; fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 8;

fig. 17 is a schematic view showing the structure of a photographing lens group according to embodiment 9 of the present application; fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 9.

Detailed Description

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

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

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

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

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

The image capturing lens group according to an exemplary embodiment of the present application may include, for example, seven lenses having optical powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. In the first to seventh lenses, any adjacent two lenses may have an air space therebetween.

In an exemplary embodiment, the first lens has a negative optical power, and the object side surface thereof may be concave; the second lens has positive focal power or negative focal power; the third lens has positive focal power; the fourth lens has positive focal power or negative focal power; the fifth lens has positive focal power, and the object side surface of the fifth lens can be a concave surface; the sixth lens has positive focal power or negative focal power; the seventh lens has a negative power. The imaging quality of the camera lens group can be effectively improved by reasonably controlling the positive and negative distribution of the focal power of each component of the lens and the lens surface curvature.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression FOV ≧ 120.1 °, where FOV is the maximum angle of view of the image pickup lens group. The FOV is more than or equal to 120.1 degrees, so that the visual field of the camera lens group is wide, and clear imaging can be realized in a large visual field range. More specifically, the FOV may satisfy: the FOV is more than or equal to 120.1 degrees and less than or equal to 126.1 degrees.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 1 < f × tan (Semi-FOV/2) < 1.7, where Semi-FOV is half of the maximum angle of view of the image capturing lens group and f is the total effective focal length of the image capturing lens group. The requirements that 1 is more than f multiplied by tan (Semi-FOV/2) is less than 1.7 are met, the imaging effect of a large image plane of the camera lens group is favorably realized, and the camera lens group has higher optical performance and better processing technology. More specifically, Semi-FOV and f may satisfy: 1.30 < f × tan (Semi-FOV/2) < 1.45.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 0.5 < f/f5 < 1.0, where f5 is the effective focal length of the fifth lens and f is the total effective focal length of the image capturing lens group. The fifth lens can bear larger focal power to further facilitate the correction of the aberration of the photographing lens group and shorten the total length of the photographing lens group when f/f5 is more than 0.5 and less than 1.0. More specifically, f5 and f can satisfy: f/f5 is more than 0.81 and less than 0.95.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression 0.5 < DT31/DT21 < 1, where DT31 is the maximum effective radius of the object side surface of the third lens and DT21 is the maximum effective radius of the object side surface of the second lens. By limiting the maximum effective radius ratio of the object side surface of the third lens element to the object side surface of the second lens element within this range, the size of the photographing lens assembly can be reduced, the miniaturization requirement can be satisfied, and the resolving power of the photographing lens assembly can be improved. More specifically, DT31 and DT21 satisfy: 0.65 < DT31/DT21 < 0.75.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression 0.9 < T12/T23 < 1.4, where T12 is a separation distance of the first lens and the second lens on the optical axis, and T23 is a separation distance of the second lens and the third lens on the optical axis. The requirements of T12/T23 being more than 0.9 and less than 1.4 are met, the assembly stability of the lens of the photographing lens group and the consistency of mass production are favorably improved, and the production yield of the photographing lens group is favorably improved. More specifically, T12 and T23 may satisfy: 1.05 < T12/T23 < 1.20.

In an exemplary embodiment, the photographing lens group of the present application may satisfy the conditional expression 1.5 < CT1/CT2 < 2.2, where CT1 is a central thickness of the first lens on the optical axis and CT2 is a central thickness of the second lens on the optical axis. The requirement of 1.5 < CT1/CT2 < 2.2 is met, the chief ray angle of the camera lens group can be adjusted, the relative brightness of the camera lens group can be effectively improved, and the image plane definition is improved. More specifically, CT1 and CT2 satisfy: 1.65 < CT1/CT2 < 2.10.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 0 < | R6/f3| < 0.8, where R6 is a radius of curvature of an image side surface of the third lens and f3 is an effective focal length of the third lens. The requirement that 0 < | R6/f3| < 0.8 is met, the optical distortion of the photographing lens group can be reduced, and the good imaging quality is ensured. More specifically, R6 and f3 may satisfy: 0.50 < | R6/f3| < 0.70.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression-2.1 < (R9+ R10)/f5 ≦ -1.57, where R9 is a radius of curvature of an object-side surface of the fifth lens, R10 is a radius of curvature of an image-side surface of the fifth lens, and f5 is an effective focal length of the fifth lens. Satisfy-2.1 < (R9+ R10)/f5 is less than or equal to-1.57, can effectively reduce the optical sensitivity of the fifth lens, and is favorable for realizing the mass production of the fifth lens. More specifically, R9, R10, and f5 may satisfy: -1.95 < (R9+ R10)/f5 is less than or equal to-1.57.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression-1.8 < R1/f < -1.2, where R1 is a radius of curvature of the object side surface of the first lens and f is a total effective focal length of the image pickup lens group. The optical lens meets the requirement that R1/f is more than-1.8 and less than-1.2, and is favorable for controlling the incident angle of the light rays of the off-axis field of view of the camera lens group at the imaging surface so as to increase the matching of the camera lens group with the photosensitive element and the band-pass filter. More specifically, R1 and f may satisfy: -1.63 < R1/f < -1.47.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression 0.2 < CT6/CT5 < 0.7, where CT5 is a central thickness of the fifth lens element on the optical axis and CT6 is a central thickness of the sixth lens element on the optical axis. Satisfying 0.2 < CT6/CT5 < 0.7, the lens of the photographing lens group can obtain enough space and higher surface freedom, and simultaneously can better correct the curvature of field and astigmatism of the photographing lens group. More specifically, CT5 and CT6 satisfy: 0.30 < CT6/CT5 < 0.54.

In an exemplary embodiment, the image capturing lens group of the present application may satisfy the conditional expression-0.35 ≦ f/f1 < 0, where f is the total effective focal length of the image capturing lens group, and f1 is the effective focal length of the first lens. Satisfying-0.35 ≤ f/f1 < 0, which is helpful for adjusting light position and shortening the total length of the photographing lens group. More specifically, f and f1 may satisfy: f/f1 is more than-0.22 and less than-0.35.

In an exemplary embodiment, the image pickup lens group of the present application may satisfy the conditional expression 0.17 ≦ SAG51/SAG61 < 0.6, where SAG51 is an on-axis distance between an intersection of an object-side surface of the fifth lens and the optical axis and an effective radius vertex of the object-side surface of the fifth lens, and SAG61 is an on-axis distance between an intersection of an object-side surface of the sixth lens and the optical axis and an effective radius vertex of the object-side surface of the sixth lens. Meets the condition that SAG51/SAG61 is more than or equal to 0.17 and less than 0.6, can reasonably control the deflection angle of a main ray so as to improve the matching degree of the camera lens group and a chip and is beneficial to adjusting the structure of the camera lens group. More specifically, SAG51 and SAG61 may satisfy: 0.17 is less than or equal to SAG51/SAG61 is less than 0.42.

In an exemplary embodiment, the above-mentioned photographing lens group may further include at least one diaphragm. The diaphragm may be disposed at an appropriate position as needed, for example, between the second lens and the third lens. Optionally, the above-mentioned image pickup lens group may further include a filter for correcting color deviation and/or a protective glass for protecting the photosensitive element on the image plane.

The image pickup lens group according to the above-described embodiment of the present application may employ a plurality of lenses, for example, seven lenses as described above. By reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance between each lens and the like, the volume of the camera lens group can be effectively reduced, the sensitivity of the camera lens group is reduced, and the machinability of the camera lens group is improved, so that the camera lens group is more beneficial to production and processing and is suitable for portable electronic products. Simultaneously, the camera lens group of this application still possesses wide angle, the formation of image is clear, good optical properties such as resolution power height, formation of image quality height.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, sixth, and seventh lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.

However, it will be appreciated by those skilled in the art that the number of lenses constituting the imaging lens group can be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter. For example, although seven lenses are exemplified in the embodiment, the image pickup lens group is not limited to include seven lenses. The image pickup lens group may further include other numbers of lenses if necessary.

Specific examples of the image pickup lens group applicable to the above embodiments are further described below with reference to the drawings.

Example 1

An image capturing lens group according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an image capturing lens group according to embodiment 1 of the present application.

As shown in fig. 1, the image capturing lens assembly, in order from an object side to an image side, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

Table 1 shows a basic parameter table of the image pickup lens group of embodiment 1, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm).

TABLE 1

In embodiment 1, the value of the total effective focal length f of the image-taking lens group is 2.26mm, the value of the f-number Fno of the image-taking lens group is 2.28, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 5.85mm, the value of half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.53mm, and the value of the maximum field angle FOV is 120.10 ° (i.e., half Semi-FOV value of the maximum field angle FOV is 60.05 °).

In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below givesThe high-order term coefficients A usable for the aspherical mirror surfaces S1 to S14 in example 1 were determined₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈And A₂₀。

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.3482E-01

-1.8174E-01

1.4205E-01

-8.7992E-02

4.0423E-02

-1.3019E-02

2.7519E-03

-3.3981E-04

1.8404E-05

S2

3.3970E-01

-1.6705E-01

-2.2900E-01

1.0424E+00

-1.7487E+00

1.6372E+00

-8.8809E-01

2.5561E-01

-2.9477E-02

S3

7.4056E-02

-2.8660E-01

6.4410E-01

-1.4793E+00

2.3451E+00

-2.4675E+00

1.6187E+00

-5.8135E-01

8.5606E-02

S4

2.1422E-02

-3.2773E-01

2.4818E+00

-1.3389E+01

4.6750E+01

-1.0357E+02

1.4069E+02

-1.0690E+02

3.5032E+01

S5

3.0359E-02

-4.1570E-01

4.0274E+00

-2.5300E+01

9.7958E+01

-2.3914E+02

3.5837E+02

-3.0151E+02

1.0913E+02

S6

1.6527E-02

-8.3657E-02

5.8515E-01

-2.2534E+00

5.3042E+00

-7.7867E+00

6.7518E+00

-3.1119E+00

5.7494E-01

S7

-1.2277E-01

-1.5539E-02

1.6175E-01

-1.8555E-01

-4.3804E-02

2.8788E-01

-2.9015E-01

1.1876E-01

-1.4960E-02

S8

-1.0682E-01

2.5638E-02

6.1084E-02

-1.0237E-01

9.4557E-02

-6.0103E-02

2.4804E-02

-5.8586E-03

6.0269E-04

S9

5.2426E-02

-7.6643E-02

1.2042E-01

-1.2469E-01

8.3459E-02

-3.3754E-02

7.6643E-03

-8.5395E-04

3.1357E-05

S10

1.0159E-01

-6.3273E-02

3.7062E-02

-1.2357E-04

-1.0610E-02

6.5060E-03

-1.8590E-03

2.5951E-04

-1.4461E-05

S11

-9.5231E-03

-1.3000E-02

1.3284E-02

-8.6811E-03

1.5579E-03

6.4528E-04

-3.4764E-04

5.9770E-05

-3.6514E-06

S12

-7.2466E-03

-2.3734E-02

3.3438E-02

-2.3818E-02

9.2451E-03

-2.0985E-03

2.8224E-04

-2.1235E-05

7.0280E-07

S13

-4.0132E-02

-9.5386E-02

1.0244E-01

-5.4327E-02

1.7089E-02

-3.2794E-03

3.7620E-04

-2.3647E-05

6.2371E-07

S14

-9.3915E-02

3.1824E-02

-6.8209E-03

7.2975E-04

-1.5269E-06

-8.9552E-06

9.0476E-07

-2.6673E-08

-1.9072E-10

TABLE 2

Fig. 2A shows an on-axis chromatic aberration curve of the image-taking lens group of embodiment 1, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 1. Fig. 2C shows a distortion curve of the image capturing lens group of embodiment 1, which represents distortion magnitude values corresponding to different angles of view. Fig. 2D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the image capturing lens assembly of embodiment 1 can achieve good image quality.

Example 2

An image capturing lens group according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic configuration diagram of a photographing lens group according to embodiment 2 of the present application.

As shown in fig. 3, the image capturing lens assembly, in order from an object side to an image side, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

In embodiment 2, the value of the total effective focal length f of the image-taking lens group is 2.26mm, the value of the f-number Fno of the image-taking lens group is 2.28, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 5.97mm, the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 3.63mm, and the value of the maximum field angle FOV is 123.62 °.

Table 3 shows a basic parameter table of the image pickup lens group of embodiment 2, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 4 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 3

TABLE 4

Fig. 4A shows an on-axis chromatic aberration curve of the image-taking lens group of embodiment 2, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 2. Fig. 4C shows a distortion curve of the image capturing lens group of embodiment 2, which represents distortion magnitude values corresponding to different angles of view. Fig. 4D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the image capturing lens assembly according to embodiment 2 can achieve good image quality.

Example 3

A photographing lens group according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural view of a photographing lens group according to embodiment 3 of the present application.

As shown in fig. 5, the image capturing lens assembly, in order from an object side to an image side, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

In embodiment 3, the value of the total effective focal length f of the image-taking lens group is 2.30mm, the value of the f-number Fno of the image-taking lens group is 2.28, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 6.04mm, the value of the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.63mm, and the value of the maximum field angle FOV is 126.00 °.

Table 5 shows a basic parameter table of the image pickup lens group of embodiment 3, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 5

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.3204E-01

-1.8058E-01

1.4187E-01

-8.7836E-02

3.9730E-02

-1.2391E-02

2.4981E-03

-2.9129E-04

1.4871E-05

S2

3.3876E-01

-2.8725E-01

2.6959E-01

-1.0048E-01

-1.6744E-01

3.1778E-01

-2.4636E-01

9.1332E-02

-1.3008E-02

S3

8.4872E-02

-3.8963E-01

1.0868E+00

-2.8008E+00

5.3009E+00

-7.2707E+00

6.5929E+00

-3.4096E+00

7.5230E-01

S4

4.6972E-02

-4.1933E-01

2.3523E+00

-1.0254E+01

3.2597E+01

-7.4720E+01

1.1331E+02

-9.8535E+01

3.6826E+01

S5

9.5764E-03

1.0482E-01

-1.2349E+00

2.7399E+00

1.5023E+01

-1.2230E+02

3.5157E+02

-4.7728E+02

2.5386E+02

S6

-1.1224E-02

3.0158E-02

4.6882E-02

3.3473E-01

-3.0623E+00

9.1472E+00

-1.4188E+01

1.1453E+01

-3.8470E+00

S7

-1.4450E-01

7.3575E-02

-3.0461E-02

2.9945E-02

-1.4040E-01

2.5291E-01

-2.4600E-01

1.2500E-01

-2.6050E-02

S8

-1.0308E-01

2.8895E-02

5.5022E-02

-1.1077E-01

1.1079E-01

-6.8394E-02

2.5535E-02

-5.1995E-03

4.3535E-04

S9

5.3380E-02

-7.5723E-02

9.7149E-02

-7.0249E-02

2.7292E-02

-2.5962E-03

-2.0612E-03

7.7802E-04

-8.5375E-05

S10

8.0115E-02

3.5660E-02

-1.4961E-01

1.9396E-01

-1.3208E-01

5.2419E-02

-1.1888E-02

1.3855E-03

-6.1318E-05

S11

-1.4270E-02

-8.6604E-03

1.0685E-02

-7.8738E-03

1.7286E-03

4.2396E-04

-2.7670E-04

4.9524E-05

-3.0778E-06

S12

4.5307E-02

-9.9317E-02

1.1373E-01

-7.8989E-02

3.3383E-02

-8.7105E-03

1.3750E-03

-1.2073E-04

4.5345E-06

S13

-5.2237E-02

-8.8965E-02

1.0606E-01

-6.1094E-02

2.0921E-02

-4.4006E-03

5.5928E-04

-3.9553E-05

1.1998E-06

S14

-1.0546E-01

4.5105E-02

-1.3011E-02

2.2582E-03

-1.7587E-04

-1.1009E-05

3.7047E-06

-3.0682E-07

9.0405E-09

TABLE 6

Fig. 6A shows an on-axis chromatic aberration curve of the image-taking lens group of embodiment 3, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 3. Fig. 6C shows a distortion curve of the image capturing lens group of embodiment 3, which represents distortion magnitude values corresponding to different angles of view. Fig. 6D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the image capturing lens assembly of embodiment 3 can achieve good image quality.

Example 4

A photographing lens group according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of a photographing lens group according to embodiment 4 of the present application.

As shown in fig. 7, the image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

In embodiment 4, the value of the total effective focal length f of the image-taking lens group is 2.37mm, the value of the f-number Fno of the image-taking lens group is 2.28, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 6.06mm, the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 3.53mm, and the value of the maximum field angle FOV is 120.38 °.

Table 7 shows a basic parameter table of the image pickup lens group of embodiment 4, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 7

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.2075E-01

-1.7302E-01

1.4592E-01

-9.8977E-02

4.9318E-02

-1.6875E-02

3.7034E-03

-4.6722E-04

2.5795E-05

S2

3.3349E-01

-3.7893E-01

6.7105E-01

-1.0472E+00

1.1883E+00

-8.8267E-01

3.9191E-01

-9.3433E-02

9.1846E-03

S3

8.5962E-02

-3.1161E-01

4.4021E-01

1.0170E-01

-2.0476E+00

3.8997E+00

-3.7171E+00

2.0206E+00

-5.1119E-01

S4

5.2571E-02

-1.4742E-01

-1.1632E+00

1.3947E+01

-6.4046E+01

1.6041E+02

-2.3116E+02

1.8082E+02

-5.9357E+01

S5

-3.7647E-02

-5.9366E-01

9.2482E+00

-9.3120E+01

5.6339E+02

-2.1188E+03

4.8368E+03

-6.1438E+03

3.3270E+03

S6

-1.6793E-02

-4.4890E-02

1.3286E+00

-7.7027E+00

2.5337E+01

-5.0959E+01

6.1352E+01

-4.0495E+01

1.1224E+01

S7

-1.5923E-01

1.2054E-01

-3.6772E-02

-1.9143E-01

4.9494E-01

-6.3864E-01

4.6392E-01

-1.7960E-01

2.8495E-02

S8

-1.0669E-01

5.5268E-02

1.3796E-02

-8.2410E-02

1.0864E-01

-8.0575E-02

3.5416E-02

-8.5991E-03

8.8938E-04

S9

5.1545E-02

-7.8270E-02

1.1245E-01

-9.6901E-02

5.3770E-02

-1.9129E-02

4.1659E-03

-4.9758E-04

2.4381E-05

S10

8.0993E-02

2.8299E-02

-1.4185E-01

1.9379E-01

-1.4104E-01

6.2399E-02

-1.6688E-02

2.4699E-03

-1.5489E-04

S11

-3.3303E-02

5.3329E-02

-6.8408E-02

4.6430E-02

-1.8900E-02

4.6146E-03

-6.4467E-04

4.5693E-05

-1.1693E-06

S12

-2.2792E-02

7.3518E-02

-1.0294E-01

7.3736E-02

-3.1405E-02

8.1707E-03

-1.2705E-03

1.0830E-04

-3.8908E-06

S13

-4.9896E-02

-6.5705E-02

6.5027E-02

-2.8605E-02

6.6390E-03

-6.9092E-04

-8.8455E-06

8.0027E-06

-4.8236E-07

S14

-1.0138E-01

2.7548E-02

2.1127E-03

-4.6430E-03

1.6873E-03

-3.1654E-04

3.3435E-05

-1.8756E-06

4.3355E-08

TABLE 8

Fig. 8A shows an on-axis chromatic aberration curve of the image-taking lens group of embodiment 4, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 4. Fig. 8C shows a distortion curve of the image capturing lens group of embodiment 4, which represents distortion magnitude values corresponding to different angles of view. Fig. 8D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the imaging lens assembly according to embodiment 4 can achieve good imaging quality.

Example 5

A photographing lens group according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration diagram of a photographing lens group according to embodiment 5 of the present application.

As shown in fig. 9, the image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

In embodiment 5, the value of the total effective focal length f of the image-taking lens group is 2.33mm, the value of the f-number Fno of the image-taking lens group is 2.78, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 6.21mm, the value of the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.53mm, and the value of the maximum field angle FOV is 120.44 °.

Table 9 shows a basic parameter table of the image pickup lens group of embodiment 5, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 10 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 9

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.2320E-01

-1.7344E-01

1.3774E-01

-8.7356E-02

4.0926E-02

-1.3282E-02

2.7896E-03

-3.3883E-04

1.8047E-05

S2

3.3527E-01

-2.9026E-01

3.2552E-01

-2.4246E-01

6.0218E-04

2.4683E-01

-2.7211E-01

1.2228E-01

-2.0085E-02

S3

8.3517E-02

-3.6053E-01

9.6700E-01

-2.5451E+00

5.0993E+00

-7.4541E+00

7.0082E+00

-3.6350E+00

7.8404E-01

S4

5.0482E-02

-5.2322E-01

3.5616E+00

-1.8834E+01

7.0249E+01

-1.7638E+02

2.7723E+02

-2.4318E+02

9.0671E+01

S5

1.3663E-02

-1.2181E-01

1.9080E+00

-2.3703E+01

1.5356E+02

-5.8016E+02

1.2776E+03

-1.5235E+03

7.5923E+02

S6

-5.0249E-03

2.6462E-03

1.6335E-01

-1.0691E-01

-1.7526E+00

6.8426E+00

-1.1995E+01

1.0508E+01

-3.7537E+00

S7

-1.4532E-01

4.1342E-02

-7.6305E-02

6.4790E-01

-2.1152E+00

3.5703E+00

-3.4112E+00

1.7399E+00

-3.6692E-01

S8

-8.5225E-02

-1.3858E-02

1.3179E-01

-1.9826E-01

1.7199E-01

-8.9345E-02

2.4244E-02

-1.8964E-03

-2.7961E-04

S9

4.9231E-02

-4.3166E-02

-4.9998E-03

8.5530E-02

-1.0942E-01

7.0623E-02

-2.5856E-02

5.1130E-03

-4.2583E-04

S10

5.6703E-02

1.2233E-01

-2.8820E-01

3.1669E-01

-1.9842E-01

7.5864E-02

-1.7500E-02

2.2470E-03

-1.2484E-04

S11

-3.4275E-02

8.4065E-02

-1.3680E-01

1.1195E-01

-5.4756E-02

1.6564E-02

-3.0394E-03

3.1077E-04

-1.3603E-05

S12

-3.8825E-03

9.5647E-03

-1.1551E-02

4.5639E-03

-4.7135E-04

-2.6707E-04

1.1063E-04

-1.6623E-05

9.1803E-07

S13

-7.0270E-02

-5.3964E-02

8.6160E-02

-5.6216E-02

2.1183E-02

-4.8957E-03

6.8740E-04

-5.4026E-05

1.8277E-06

S14

-1.0733E-01

5.6782E-02

-2.2384E-02

6.3684E-03

-1.2949E-03

1.8209E-04

-1.6704E-05

8.9260E-07

-2.0904E-08

Watch 10

Fig. 10A shows an on-axis chromatic aberration curve of the image-taking lens group of embodiment 5, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 5. Fig. 10C shows a distortion curve of the image capturing lens group of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. Fig. 10D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the imaging lens assembly according to embodiment 5 can achieve good imaging quality.

Example 6

A photographing lens group according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic configuration diagram of a photographing lens group according to embodiment 6 of the present application.

As shown in fig. 11, the image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

In embodiment 6, the value of the total effective focal length f of the image-taking lens group is 2.39mm, the value of the f-number Fno of the image-taking lens group is 2.28, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 6.33mm, the value of the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.63mm, and the value of the maximum angle of view FOV is 123.64 °.

Table 11 shows a basic parameter table of the imaging lens group of embodiment 6, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 11

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.1972E-01

-1.6023E-01

1.1881E-01

-7.0151E-02

3.0683E-02

-9.3565E-03

1.8577E-03

-2.1431E-04

1.0876E-05

S2

3.1403E-01

-2.7261E-01

3.6991E-01

-5.1964E-01

5.9038E-01

-4.5577E-01

2.0820E-01

-5.0058E-02

4.8781E-03

S3

9.0578E-02

-4.4014E-01

1.3461E+00

-3.9935E+00

8.5367E+00

-1.2688E+01

1.2137E+01

-6.5179E+00

1.4740E+00

S4

6.5234E-02

-6.3075E-01

3.9198E+00

-1.8974E+01

6.3610E+01

-1.4215E+02

1.9965E+02

-1.5717E+02

5.2849E+01

S5

1.3268E-02

-5.7593E-02

9.5541E-01

-1.2535E+01

7.8741E+01

-2.7755E+02

5.5752E+02

-5.9655E+02

2.6333E+02

S6

8.0435E-03

-1.0309E-02

-6.8224E-02

9.0032E-01

-3.8167E+00

9.2451E+00

-1.3353E+01

1.0608E+01

-3.5717E+00

S7

-1.1771E-01

-7.0634E-02

-1.7448E-01

1.4793E+00

-4.1712E+00

6.6128E+00

-6.1009E+00

3.0433E+00

-6.3330E-01

S8

-5.1992E-02

-9.9425E-02

1.8194E-01

-1.5353E-01

4.4415E-02

6.4872E-02

-8.2575E-02

3.7515E-02

-6.2373E-03

S9

4.7066E-02

-4.1144E-02

2.2015E-02

4.9647E-03

-1.0008E-02

4.8691E-03

-1.3028E-03

2.0711E-04

-1.6314E-05

S10

8.3276E-02

1.0836E-02

-8.5513E-02

1.1022E-01

-7.0543E-02

2.6616E-02

-5.8812E-03

6.8744E-04

-3.2079E-05

S11

-6.3692E-03

-1.9151E-02

-2.8024E-04

1.3064E-02

-1.0464E-02

3.8881E-03

-7.7510E-04

8.0948E-05

-3.5120E-06

S12

3.4764E-02

-1.0331E-01

1.1498E-01

-7.2395E-02

2.7918E-02

-6.8795E-03

1.0727E-03

-9.7296E-05

3.9148E-06

S13

-1.0080E-01

-4.2462E-02

8.5233E-02

-5.4645E-02

1.8560E-02

-3.5689E-03

3.7826E-04

-1.9286E-05

2.9758E-07

S14

-1.1476E-01

6.1210E-02

-2.2927E-02

5.8514E-03

-1.0166E-03

1.1866E-04

-8.9569E-06

3.9794E-07

-7.9436E-09

TABLE 12

Fig. 12A shows an on-axis chromatic aberration curve of the image-taking lens group of embodiment 6, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 6. Fig. 12C shows a distortion curve of the image capturing lens group of embodiment 6, which represents distortion magnitude values corresponding to different angles of view. Fig. 12D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 6, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the imaging lens assembly according to embodiment 6 can achieve good imaging quality.

Example 7

A photographing lens group according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic configuration diagram of an image capturing lens group according to embodiment 7 of the present application.

As shown in fig. 13, the image capturing lens assembly, in order from an object side to an image side, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a convex image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

In embodiment 7, the value of the total effective focal length f of the image-taking lens group is 2.34mm, the value of the f-number Fno of the image-taking lens group is 2.28, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 6.07mm, the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 3.63mm, and the value of the maximum field angle FOV is 124.86 °.

Table 13 shows a basic parameter table of the image pickup lens group of embodiment 7, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

Watch 13

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.3248E-01

-1.8416E-01

1.4705E-01

-9.2205E-02

4.2069E-02

-1.3181E-02

2.6623E-03

-3.1052E-04

1.5842E-05

S2

3.4732E-01

-3.0487E-01

2.9055E-01

-8.9551E-02

-2.3536E-01

4.0854E-01

-3.0045E-01

1.0455E-01

-1.3692E-02

S3

8.7549E-02

-4.1164E-01

1.2304E+00

-3.4094E+00

6.9351E+00

-9.8958E+00

9.0410E+00

-4.6415E+00

1.0122E+00

S4

3.9222E-02

-3.7228E-01

2.0464E+00

-9.3940E+00

3.3154E+01

-8.4125E+01

1.3668E+02

-1.2369E+02

4.7159E+01

S5

1.1768E-02

-2.9320E-02

8.7651E-01

-1.4886E+01

1.0230E+02

-3.8578E+02

8.2691E+02

-9.4721E+02

4.4921E+02

S6

-8.9899E-03

5.6191E-02

-2.5497E-01

2.0460E+00

-8.5729E+00

1.9780E+01

-2.6426E+01

1.9212E+01

-5.9290E+00

S7

-1.4832E-01

8.7225E-02

-8.2862E-02

2.1888E-01

-5.4788E-01

7.8052E-01

-6.6232E-01

3.1063E-01

-6.1914E-02

S8

-1.0410E-01

2.7093E-02

6.2534E-02

-1.1966E-01

1.1756E-01

-7.3103E-02

2.8030E-02

-5.9391E-03

5.2337E-04

S9

5.3292E-02

-7.9201E-02

1.1360E-01

-1.0513E-01

6.6459E-02

-2.7669E-02

7.1865E-03

-1.0613E-03

6.8200E-05

S10

9.0266E-02

-1.5671E-02

-4.4723E-02

7.9757E-02

-5.8317E-02

2.3525E-02

-5.1789E-03

5.3649E-04

-1.5998E-05

S11

-7.1492E-03

-2.0948E-02

2.5124E-02

-1.9372E-02

7.6244E-03

-1.4898E-03

1.0355E-04

7.2908E-06

-1.0666E-06

S12

-3.9342E-03

-3.0871E-02

4.3644E-02

-3.2152E-02

1.3258E-02

-3.2466E-03

4.7264E-04

-3.8034E-05

1.3085E-06

S13

-4.1341E-02

-1.0286E-01

1.1399E-01

-6.2690E-02

2.0547E-02

-4.1339E-03

5.0109E-04

-3.3618E-05

9.5928E-07

S14

-9.5297E-02

3.1158E-02

-4.3635E-03

-8.7995E-04

5.2698E-04

-1.0895E-04

1.1971E-05

-6.9395E-07

1.6778E-08

TABLE 14

Fig. 14A shows an on-axis chromatic aberration curve of the image-taking lens group of embodiment 7, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 7. Fig. 14C shows a distortion curve of the image capturing lens group of embodiment 7, which represents distortion magnitude values corresponding to different angles of view. Fig. 14D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 7, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the imaging lens assembly according to embodiment 7 can achieve good imaging quality.

Example 8

A photographing lens group according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural view of a photographing lens group according to embodiment 8 of the present application.

As shown in fig. 15, the image capturing lens assembly, in order from an object side to an image side, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

In embodiment 8, the value of the total effective focal length f of the image-taking lens group is 2.29mm, the value of the f-number Fno of the image-taking lens group is 2.28, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 6.04mm, the value of the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 is 3.63mm, and the value of the maximum field angle FOV is 124.70 °.

Table 15 shows a basic parameter table of the image pickup lens group of embodiment 8, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 16 shows high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

Watch 15

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

A20

S1

2.3170E-01

-1.8667E-01

1.5284E-01

-9.8979E-02

4.6910E-02

-1.5331E-02

3.2381E-03

-3.9549E-04

2.1129E-05

S2

3.5382E-01

-3.3958E-01

4.4355E-01

-4.9549E-01

4.4280E-01

-2.9957E-01

1.4702E-01

-5.2859E-02

1.0036E-02

S3

8.6982E-02

-4.0757E-01

1.2096E+00

-3.3486E+00

6.9158E+00

-1.0218E+01

9.7687E+00

-5.2624E+00

1.2033E+00

S4

3.7236E-02

-3.5860E-01

1.9239E+00

-8.5274E+00

3.0255E+01

-8.0518E+01

1.3918E+02

-1.3373E+02

5.3846E+01

S5

5.3122E-03

1.6505E-01

-1.8144E+00

6.3629E+00

2.0206E+00

-9.6960E+01

3.3074E+02

-4.8146E+02

2.6608E+02

S6

-7.9031E-03

2.4075E-02

3.4195E-02

6.3994E-01

-4.3761E+00

1.1912E+01

-1.7447E+01

1.3549E+01

-4.4208E+00

S7

-1.4919E-01

9.0827E-02

-9.8613E-02

2.9154E-01

-7.2996E-01

1.0297E+00

-8.5704E-01

3.9269E-01

-7.6499E-02

S8

-1.0437E-01

2.9854E-02

5.4996E-02

-1.0335E-01

9.6026E-02

-5.6683E-02

2.0901E-02

-4.3040E-03

3.7030E-04

S9

5.3653E-02

-7.5085E-02

9.7877E-02

-7.9108E-02

4.1604E-02

-1.3102E-02

2.0155E-03

-3.9813E-05

-1.8256E-05

S10

8.6598E-02

-1.3891E-03

-7.2729E-02

1.0979E-01

-7.7307E-02

3.0768E-02

-6.8043E-03

7.3278E-04

-2.5837E-05

S11

-1.6270E-03

-4.0562E-02

5.6498E-02

-4.7322E-02

2.2701E-02

-6.4705E-03

1.0842E-03

-9.8125E-05

3.6894E-06

S12

1.2683E-02

-6.0563E-02

7.8399E-02

-5.6318E-02

2.3535E-02

-5.9294E-03

8.9099E-04

-7.3741E-05

2.5900E-06

S13

-4.2687E-02

-1.0394E-01

1.1588E-01

-6.3983E-02

2.1038E-02

-4.2437E-03

5.1562E-04

-3.4686E-05

9.9337E-07

S14

-9.4148E-02

3.0850E-02

-4.4771E-03

-7.6905E-04

5.0215E-04

-1.0788E-04

1.2288E-05

-7.3863E-07

1.8512E-08

TABLE 16

Fig. 16A shows an on-axis chromatic aberration curve of the image-taking lens group of embodiment 8, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 8. Fig. 16C shows a distortion curve of the image capturing lens group of embodiment 8, which represents distortion magnitude values corresponding to different angles of view. Fig. 16D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 8, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the image capturing lens assembly according to embodiment 8 can achieve good image quality.

Example 9

A photographing lens group according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 shows a schematic configuration diagram of an image capturing lens group according to embodiment 9 of the present application.

As shown in fig. 17, the image capturing lens assembly, in order from an object side to an image side, comprises: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, and a filter E8.

The first lens element E1 has negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The image taking lens group has an image plane S17, and light from the subject passes through the respective surfaces S1 to S16 in order and is finally imaged on the image plane S17.

In embodiment 8, the value of the total effective focal length f of the image-taking lens group is 2.28mm, the value of the f-number Fno of the image-taking lens group is 2.28, the value of the on-axis distance TTL from the object-side surface S1 to the imaging surface S17 of the first lens E1 is 5.96mm, the value of ImgH, which is half the diagonal length of the effective pixel area on the imaging surface S17, is 3.63mm, and the value of the maximum field angle FOV is 124.60 °.

Table 17 shows a basic parameter table of the image pickup lens group of embodiment 9, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 18 shows high-order term coefficients that can be used for each aspherical mirror surface in example 9, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 17

Watch 18

Fig. 18A shows a on-axis chromatic aberration curve of the image-taking lens group of embodiment 9, which represents the convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 9. Fig. 18C shows a distortion curve of the image capturing lens group of embodiment 9, which represents distortion magnitude values corresponding to different angles of the field of view 5. Fig. 18D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 9, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 18A to 18D, the imaging lens assembly according to embodiment 9 can achieve good imaging quality.

In summary, examples 1 to 9 each satisfy the relationship shown in table 19.

Conditional expression (A) example	1	2	3	4	5	6	7	8	9
										f/f5	0.84	0.85	0.87	0.94	0.87	0.87	0.89	0.88	0.86
f/f1	-0.34	-0.33	-0.32	-0.22	-0.35	-0.32	-0.33	-0.34	-0.34
										R1/f	-1.62	-1.61	-1.49	-1.62	-1.59	-1.51	-1.51	-1.62	-1.61
CT6/CT5	0.52	0.44	0.31	0.35	0.34	0.46	0.35	0.42	0.48
										(R9+R10)/f5	-1.90	-1.86	-1.77	-1.94	-1.78	-1.57	-1.87	-1.89	-1.89
f×tan(FOV/4)	1.31	1.35	1.41	1.37	1.35	1.43	1.42	1.39	1.38
										\|R6/f3\|	0.66	0.15	0.68	0.54	0.66	0.66	0.67	0.67	0.66
DT31/DT21	0.69	0.74	0.70	0.68	0.67	0.73	0.69	0.68	0.70
										T12/T23	1.13	1.09	1.09	1.19	1.08	1.12	1.09	1.08	1.09
CT1/CT2	1.76	1.75	1.72	2.09	1.73	1.86	1.67	1.75	1.78
										SAG51/SAG61	0.30	0.24	0.24	0.23	0.17	0.40	0.21	0.27	0.24

Watch 19

The present application also provides an imaging Device, which is provided with an electron sensing element to form an image, wherein the electron sensing element may be a Charge Coupled Device (CCD) or a Complementary Metal Oxide Semiconductor (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the above-described image-taking lens group.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of protection covered by the present application is not limited to the embodiments with a specific combination of the features described above, but also covers other embodiments with any combination of the features described above or their equivalents without departing from the scope of the present application. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having a negative refractive power, an object side surface of which is a concave surface;

a second lens having an optical power;

a third lens having a positive optical power;

a fourth lens having an optical power;

a fifth lens having a positive refractive power, an object side surface of which is concave;

a sixth lens having optical power; and

a seventh lens having a negative optical power;

wherein, the maximum field angle FOV of the camera lens group satisfies:

FOV≥120.1°；

the maximum field angle FOV of the camera lens group and the total effective focal length f of the camera lens group satisfy:

1＜f×tan(FOV/4)＜1.7。

2. the imaging lens group of claim 1, wherein the effective focal length f5 of the fifth lens and the total effective focal length f of the imaging lens group satisfy:

0.5＜f/f5＜1.0。

3. the imaging lens group of claim 1, wherein the maximum effective radius DT31 of the object side surface of the third lens and the maximum effective radius DT21 of the object side surface of the second lens satisfy:

0.5＜DT31/DT21＜1。

4. the imaging lens group according to claim 1, wherein a separation distance T12 on the optical axis between the first lens and the second lens and a separation distance T23 on the optical axis between the second lens and the third lens satisfy:

0.9＜T12/T23＜1.4。

5. the imaging lens group of claim 1, wherein a central thickness CT1 of the first lens on the optical axis and a central thickness CT2 of the second lens on the optical axis satisfy:

1.5＜CT1/CT2＜2.2。

6. the imaging lens group of claim 1, wherein the radius of curvature R6 of the image side surface of the third lens and the effective focal length f3 of the third lens satisfy:

0＜|R6/f3|＜0.8。

7. the imaging lens group of claim 1, wherein the radius of curvature R9 of the object-side surface of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the effective focal length f5 of the fifth lens satisfy:

-2.1＜(R9+R10)/f5≤-1.57。

8. the imaging lens group of claim 1, wherein the radius of curvature R1 of the object side surface of the first lens and the total effective focal length f of the imaging lens group satisfy:

-1.8＜R1/f＜-1.2。

9. the imaging lens group of claim 1, wherein a central thickness CT5 of the fifth lens on the optical axis and a central thickness CT6 of the sixth lens on the optical axis satisfy:

0.2＜CT6/CT5＜0.7。

10. the image capturing lens group according to any one of claims 1 to 9, wherein the total effective focal length f of the image capturing lens group and the effective focal length f1 of the first lens satisfy:

-0.35≤f/f1＜0。

11. the image capturing lens group according to any one of claims 1 to 9, wherein an on-axis distance SAG51 between an intersection point of the object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens and an on-axis distance SAG61 between an intersection point of the object side surface of the sixth lens and the optical axis to an effective radius vertex of the object side surface of the sixth lens satisfy:

0.17≤SAG51/SAG61＜0.6。

12. the image capturing lens assembly, in order from an object side to an image side along an optical axis, comprises:

a second lens having an optical power;

a third lens having a positive optical power;

a fourth lens having an optical power;

a sixth lens having optical power; and

a seventh lens having a negative optical power;

wherein, the maximum field angle FOV of the camera lens group satisfies:

FOV≥120.1°；

a separation distance T12 of the first lens and the second lens on the optical axis and a separation distance T23 of the second lens and the third lens on the optical axis satisfy:

0.9＜T12/T23＜1.4。

13. the imaging lens group of claim 12, wherein the effective focal length f5 of the fifth lens and the total effective focal length f of the imaging lens group satisfy:

0.5＜f/f5＜1.0。

14. the imaging lens group of claim 12, wherein the maximum effective radius DT31 of the object side surface of the third lens and the maximum effective radius DT21 of the object side surface of the second lens satisfy:

0.5＜DT31/DT21＜1。

15. the imaging lens group according to claim 14, wherein the maximum field angle FOV of the imaging lens group and the total effective focal length f of the imaging lens group satisfy:

1＜f×tan(FOV/4)＜1.7。

16. the imaging lens group of claim 12, wherein a center thickness CT1 of the first lens on the optical axis and a center thickness CT2 of the second lens on the optical axis satisfy:

1.5＜CT1/CT2＜2.2。

17. the imaging lens group of claim 12, wherein the radius of curvature R6 of the image side surface of the third lens and the effective focal length f3 of the third lens satisfy:

0＜|R6/f3|＜0.8。

18. the imaging lens group of claim 12, wherein the radius of curvature R9 of the object-side surface of the fifth lens, the radius of curvature R10 of the image-side surface of the fifth lens, and the effective focal length f5 of the fifth lens satisfy:

-2.1＜(R9+R10)/f5≤-1.57。

19. the imaging lens group of claim 12, wherein the radius of curvature R1 of the object side surface of the first lens and the total effective focal length f of the imaging lens group satisfy:

-1.8＜R1/f＜-1.2。

20. the imaging lens group of claim 12, wherein a central thickness CT5 of the fifth lens on the optical axis and a central thickness CT6 of the sixth lens on the optical axis satisfy:

0.2＜CT6/CT5＜0.7。

21. the image capturing lens group according to any one of claims 12 to 20, wherein the total effective focal length f of the image capturing lens group and the effective focal length f1 of the first lens satisfy:

-0.35≤f/f1＜0。

22. the image capturing lens group according to any one of claims 12 to 20, wherein an on-axis distance SAG51 between an intersection point of the object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens and an on-axis distance SAG61 between an intersection point of the object side surface of the sixth lens and the optical axis to an effective radius vertex of the object side surface of the sixth lens satisfy:

0.17≤SAG51/SAG61＜0.6。