CN213843656U

CN213843656U - Camera lens and electronic equipment comprising same

Info

Publication number: CN213843656U
Application number: CN202022851434.6U
Authority: CN
Inventors: 闻人建科; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-07-30
Anticipated expiration: 2030-12-02

Abstract

The present application relates to a camera lens and an electronic device including the same, wherein the camera lens sequentially includes from an object side to an image side along an optical axis: a first lens having a positive optical power; a second lens having an optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having a positive optical power; a sixth lens having a negative optical power. Half of the diagonal length ImgH of the effective pixel area on the imaging surface of the camera lens, the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis, and the total effective focal length of the camera lens can satisfy: 0.8 or more of ImgH ^2/(TTL ^ f) < 1.0; and the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens may satisfy: -1.0< f3/f2-f3/f4< -0.5.

Description

Camera lens and electronic equipment comprising same

Technical Field

The present disclosure relates to the field of optical elements, and in particular, to an imaging lens and an electronic device including the same.

Background

In recent years, with the rapid development of the field of smart phones, the smart phones have higher and higher requirements on their camera lenses, and in order to meet the market demands, the camera lenses are required to be developed towards a trend of large image planes and ultra-thinning. The large image plane means that the camera lens has high resolution, and the ultra-thinness enables the camera lens to be compatible and matched with a smart phone better, but the requirements are difficult to meet by the traditional five-piece camera lens.

Therefore, in order to meet the use requirements of people on the camera lens on the smart phone nowadays, a six-lens type camera lens with ultrathin and large image surface is urgently needed to be designed.

SUMMERY OF THE UTILITY MODEL

In one aspect, the present application provides an imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having a positive optical power; a second lens having an optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having a positive optical power; a sixth lens having a negative optical power; wherein, half ImgH of the diagonal length of the effective pixel area on the imaging surface of the camera lens, the distance TTL from the object side surface of the first lens to the imaging surface of the camera lens on the optical axis, and the total effective focal length of the camera lens can satisfy: 0.8 or more of ImgH ^2/(TTL ^ f) < 1.0; and the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens may satisfy: -1.0< f3/f2-f3/f4< -0.5.

In some embodiments, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy: -1.2< f4/f3< -0.9.

In some embodiments, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens may satisfy: f1/f5 is more than or equal to 1.0 and less than or equal to 1.2.

In some embodiments, the total effective focal length f of the image capture lens and the effective focal length f6 of the sixth lens may satisfy: -2.0< f/f6< -1.5.

In some embodiments, the total effective focal length f of the imaging lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R4 of the image-side surface of the second lens may satisfy: 0.7< f/(R3-R4) < 1.2.

In some embodiments, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R6 of the image-side surface of the third lens may satisfy: -1.0< R3/R6< -0.5.

In some embodiments, the total effective focal length f of the image capture lens and the radius of curvature R7 of the object side surface of the fourth lens may satisfy: 0< f/R7< 0.3.

In some embodiments, the total effective focal length f of the image capture lens and the radius of curvature R11 of the object side surface of the sixth lens element may satisfy: -1.0< f/R11< 0.

In some embodiments, the radius of curvature R8 of the image-side surface of the fourth lens and the radius of curvature R9 of the object-side surface of the fifth lens may satisfy: 1.0 is less than or equal to R8/R9 and less than 1.5.

In some embodiments, the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens may satisfy: 1.5< (R9-R10)/(R9+ R10) < 3.0.

In some embodiments, the total effective focal length f of the image capture lens and the maximum field angle FOV of the image capture lens may satisfy: f tan (FOV/3) is not less than 3.

In some embodiments, the total effective focal length f of the image pickup lens and the separation distance T56 between the fifth lens and the sixth lens on the optical axis may satisfy: 6< f/T56< 8.

In another aspect, the present application provides an imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having a positive optical power; a second lens having an optical power; a third lens having optical power; a fourth lens having an optical power; a fifth lens having a positive optical power; a sixth lens having a negative optical power; the total effective focal length f of the camera lens and the maximum field angle FOV of the camera lens can meet the following requirements: f tan (FOV/3) is not less than 3; and the effective radius R3 of the object side surface of the second lens and the effective radius R6 of the image side surface of the third lens can satisfy: -1.0< R3/R6< -0.5.

In some embodiments, ImgH, which is half the diagonal length of the effective pixel area on the imaging surface of the imaging lens, TTL, which is the distance on the optical axis from the object side surface of the first lens to the imaging surface of the imaging lens, and the total effective focal length of the imaging lens may satisfy: 0.8-0 ImgH ^2/(TTL ^ f) < 1.0.

In some embodiments, the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens may satisfy: -1.0< f3/f2-f3/f4< -0.5.

In another aspect, the present application provides an electronic apparatus including the imaging lens provided according to the present application and an imaging element for converting an optical image formed by the imaging lens into an electrical signal.

The six lenses are adopted, and the focal power and the surface type of each lens are reasonably distributed, and the characteristics of the total optical length, the image height and the like of the camera lens are controlled, so that the camera lens can have at least one beneficial effect of miniaturization, large image surface, ultra-thinning, good imaging effect and the like.

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 an imaging lens according to embodiment 1 of the present application;

fig. 2A to 2C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the imaging lens of embodiment 1, respectively;

fig. 3 shows a schematic configuration diagram of an imaging lens according to embodiment 2 of the present application;

fig. 4A to 4C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the imaging lens of embodiment 2, respectively;

fig. 5 shows a schematic configuration diagram of an imaging lens according to embodiment 3 of the present application;

fig. 6A to 6C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the imaging lens of embodiment 3, respectively;

fig. 7 is a schematic configuration diagram showing an imaging lens according to embodiment 4 of the present application;

fig. 8A to 8C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the imaging lens of embodiment 4, respectively;

fig. 9 is a schematic configuration diagram showing an imaging lens according to embodiment 5 of the present application;

fig. 10A to 10C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the imaging lens of embodiment 5, respectively;

fig. 11 is a schematic configuration diagram showing an imaging lens according to embodiment 6 of the present application;

fig. 12A to 12C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of the imaging lens of embodiment 6;

fig. 13 is a schematic configuration diagram showing an imaging lens according to embodiment 7 of the present application;

fig. 14A to 14C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of an imaging lens of embodiment 7;

fig. 15 shows a schematic configuration diagram of an imaging lens according to embodiment 8 of the present application; and

fig. 16A to 16C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of the imaging lens of embodiment 8.

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 image side 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.

An image pickup lens according to an exemplary embodiment of the present application may include six lenses having optical powers, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens, respectively. The six lenses are arranged in sequence from the object side to the image side along the optical axis of the imaging lens, and an air space can be formed between any two adjacent lenses.

In an exemplary embodiment, the first lens may have a positive optical power; the second lens may have optical power; the third lens may have optical power; the fourth lens may have optical power; the fifth lens may have a positive optical power; and the sixth lens may have a negative optical power. The reasonable matching of the focal power and the surface type of each lens in the optical system can ensure the reasonability of the structure of the camera lens.

In an exemplary embodiment, ImgH, which is half the diagonal length of the effective pixel area on the imaging plane of the imaging lens, TTL, which is the distance on the optical axis from the object side surface of the first lens to the imaging plane of the imaging lens, and the total effective focal length of the imaging lens may satisfy: 0.8-0 ImgH ^2/(TTL ^ f) < 1.0. The requirement of not less than 0.8 and not more than ImgH 2/(TTL f) <1.0 is met, the optical effective surface can be increased, the integral optical height is reduced, and the ultra-thinning characteristic is facilitated. Specifically, ImgH, TTL and f further may satisfy: 0.81 is less than or equal to ImgH ^2/(TTL ^ f) < 0.95.

In an exemplary embodiment, the effective focal length f2 of the second lens, the effective focal length f3 of the third lens, and the effective focal length f4 of the fourth lens may satisfy: -1.0< f3/f2-f3/f4< -0.5. By controlling the effective focal lengths of the second lens, the third lens and the fourth lens to meet-1.0 < f3/f2-f3/f4< -0.5, the second lens, the third lens and the fourth lens can be matched with each other better, and a good imaging effect is realized. More specifically, f2, f3, and f4 may further satisfy: -0.9< f3/f2-f3/f4< -0.6.

In an exemplary embodiment, the effective focal length f3 of the third lens and the effective focal length f4 of the fourth lens may satisfy: -1.2< f4/f3< -0.9. The third lens meets the requirement of-1.2 < f4/f3< -0.9, the sensitivity of the third lens to the refractive index of the material can be reduced, and the processing and manufacturing of the third lens are facilitated. More specifically, f3 and f4 may further satisfy: -1.16< f4/f3< -0.95.

In an exemplary embodiment, the effective focal length f1 of the first lens and the effective focal length f5 of the fifth lens may satisfy: f1/f5 is more than or equal to 1.0 and less than or equal to 1.2. Satisfying f1/f5 of 1.0-1.2, improving the axial chromatic aberration of the camera lens, and being beneficial to ensuring the authenticity of the color. More specifically, f1 and f5 may further satisfy: f1/f5 is more than or equal to 1.05 and less than or equal to 1.15.

In an exemplary embodiment, the total effective focal length f of the image pickup lens and the effective focal length f6 of the sixth lens may satisfy: -2.0< f/f6< -1.5. The distortion value of the camera lens can be effectively reduced by meeting-2.0 < f/f6< -1.5. More specifically, f and f6 further satisfy: -1.80< f/f6< -1.55.

In an exemplary embodiment, the total effective focal length f of the imaging lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R4 of the image-side surface of the second lens may satisfy: 0.7< f/(R3-R4) < 1.2. The requirement of 0.7< f/(R3-R4) <1.2 can reduce the sensitivity of the second lens to the thickness, and is beneficial to the processing and manufacturing of the second lens. More specifically, f, R3, and R4 may further satisfy: 0.7< f/(R3-R4) < 1.15.

In an exemplary embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R6 of the image-side surface of the third lens may satisfy: -1.0< R3/R6< -0.5. The requirement of-1.0 < R3/R6< -0.5 is met, the lateral chromatic aberration of the camera lens can be improved, and the chromatic aberration range of a visible waveband is effectively reduced. More specifically, R3 and R6 may further satisfy: -0.95< R3/R6< -0.55.

In an exemplary embodiment, the total effective focal length f of the imaging lens and the radius of curvature R7 of the object side surface of the fourth lens may satisfy: 0< f/R7< 0.3. The requirement that f/R7 is 0< f/R7<0.3 can reduce the sensitivity of the fourth lens to the aspheric surface type, and is beneficial to the processing and manufacturing of the fourth lens. More specifically, f and R7 further satisfy: 0.05< f/R7< 0.2.

In an exemplary embodiment, the total effective focal length f of the imaging lens and the radius of curvature R11 of the object side surface of the sixth lens may satisfy: -1.0< f/R11< 0. The requirement that-1.0 < f/R11<0 is met, the sensitivity of the sixth lens to the aspheric surface type can be reduced, and the processing and manufacturing of the sixth lens are facilitated. More specifically, f and R11 further satisfy: -0.8< f/R11< 0.

In an exemplary embodiment, a radius of curvature R8 of the image-side surface of the fourth lens and a radius of curvature R9 of the object-side surface of the fifth lens may satisfy: 1.0 is less than or equal to R8/R9 and less than 1.5. R8/R9 of 1.0-1.5 is satisfied, the sensitivity of the air space between the fourth lens and the fifth lens to the thickness can be reduced, and the assembly production of the camera lens is facilitated. More specifically, R8 and R9 may further satisfy: 1.0 is less than or equal to R8/R9 and less than 1.4.

In an exemplary embodiment, a radius of curvature R9 of the object-side surface of the fifth lens and a radius of curvature R10 of the image-side surface of the fifth lens may satisfy: 1.5< (R9-R10)/(R9+ R10) < 3.0. The requirement of 1.5< (R9-R10)/(R9+ R10) <3.0 is met, the sensitivity of the fifth lens to the aspheric surface type can be reduced, and the processing and manufacturing of the fifth lens are facilitated. More specifically, R9 and R10 may further satisfy: 1.6< (R9-R10)/(R9+ R10) < 2.9.

In an exemplary embodiment, the total effective focal length f of the image pickup lens and the maximum field angle FOV of the image pickup lens may satisfy: f tan (FOV/3) is not less than 3. F tan (FOV/3) is more than or equal to 3, the off-axis chromatic aberration of the camera lens can be reduced, the optical distortion of the system is reduced, and better imaging quality is obtained. More specifically, f and FOV further satisfy: 3 ≦ f tan (FOV/3) < 4.

In an exemplary embodiment, the total effective focal length f of the image pickup lens and the separation distance T56 on the optical axis between the fifth lens and the sixth lens may satisfy: 6< f/T56< 8. Satisfying 6< f/T56<8, the axial color difference of the camera lens can be improved, and the risk of color cast is reduced. More specifically, f and T56 further satisfy: 6.5< f/T56< 7.5.

In an exemplary embodiment, the above-described imaging lens may further include a diaphragm. The diaphragm may be disposed at an appropriate position as required. For example, a diaphragm may be disposed before the first lens. Alternatively, the above-described image pickup lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an image forming surface.

The imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, six 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 can be effectively reduced, the machinability of the camera lens can be improved, and the camera lens is more beneficial to production and processing and can be suitable for portable electronic products. The imaging lens configured as described above can have features such as miniaturization, ultra-thinning, large image plane, and good imaging quality.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror, that is, at least one of the object-side surface of the first lens to the image-side surface of the sixth lens is an aspherical mirror. 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 lens center to the lens periphery, an aspherical lens has a better curvature radius characteristic, and has an advantage of improving distortion aberration, that is, astigmatic aberration. After the aspheric lens is adopted, the aberration generated in imaging can be eliminated as much as possible, and the imaging quality is further improved. 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, and the sixth lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, and sixth 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 an imaging lens may be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter. For example, although six lenses are exemplified in the embodiment, the imaging lens is not limited to including six lenses. The camera lens may also include other numbers of lenses, if desired.

Specific examples of an imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.

Example 1

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

As shown in fig. 1, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave 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 convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a concave image-side surface S12. Filter E7 has an object side S13 and an image side S14. The light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

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

TABLE 1

In this example, the total effective focal length f of the imaging lens is 5.26mm, and the maximum field angle FOV of the imaging lens is 90.5 °.

In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the sixth lens E6 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. Tables 2 and 3 show the high-order coefficient coefficients a4, A6, A8, a10, a12, a14, a16, a18, a20, a22, a24, a26, a28, and a30, which can be used for each of the aspherical mirrors S1 through S12 in example 1.

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-2.2999E-03

2.5169E-02

-9.3046E-02

1.3188E-01

3.7897E-01

-2.3495E+00

5.7861E+00

S2

-5.7091E-02

2.8263E-01

-1.9871E+00

9.3137E+00

-2.9353E+01

6.4589E+01

-1.0157E+02

S3

-2.3605E-02

-3.5983E-01

3.3180E+00

-1.7366E+01

6.1273E+01

-1.5159E+02

2.6877E+02

S4

-2.1075E-02

1.2737E-03

7.8001E-01

-6.7365E+00

3.3111E+01

-1.0490E+02

2.2644E+02

S5

-4.4209E-02

-1.2345E-02

2.1208E-01

-1.1397E+00

2.9082E+00

-3.1855E+00

-2.5250E+00

S6

-4.9834E-02

-3.0150E-02

4.0191E-01

-2.2390E+00

7.5457E+00

-1.7047E+01

2.6840E+01

S7

-7.9375E-02

-9.5442E-02

3.5675E-01

-6.3637E-01

6.5797E-01

-2.9118E-01

-2.0057E-01

S8

-7.7969E-02

-5.2390E-02

1.2765E-01

-1.1053E-01

3.3866E-03

1.0208E-01

-1.2587E-01

S9

1.3403E-02

-6.1900E-02

6.0964E-02

-4.4988E-02

2.6430E-02

-1.2229E-02

4.4124E-03

S10

4.2642E-02

-4.3213E-02

3.8781E-02

-2.8632E-02

1.6558E-02

-6.7493E-03

1.8605E-03

S11

-1.8070E-01

7.5307E-02

-1.8236E-02

3.0184E-03

-4.3168E-04

8.1610E-05

-1.7292E-05

S12

-2.2808E-01

1.3386E-01

-6.3315E-02

2.2628E-02

-5.9505E-03

1.1469E-03

-1.6264E-04

TABLE 2

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-8.6725E+00

8.6571E+00

-5.8959E+00

2.7153E+00

-8.1055E-01

1.4174E-01

-1.1032E-02

S2

1.1544E+02

-9.4832E+01

5.5663E+01

-2.2710E+01

6.1030E+00

-9.6858E-01

6.8555E-02

S3

-3.4533E+02

3.2183E+02

-2.1527E+02

1.0068E+02

-3.1243E+01

5.7787E+00

-4.8201E-01

S4

-3.4247E+02

3.6642E+02

-2.7565E+02

1.4231E+02

-4.7857E+01

9.4038E+00

-8.1454E-01

S5

1.4365E+01

-2.3965E+01

2.3102E+01

-1.4062E+01

5.3462E+00

-1.1626E+00

1.1061E-01

S6

-3.0047E+01

2.4071E+01

-1.3704E+01

5.4135E+00

-1.4107E+00

2.1804E-01

-1.5135E-02

S7

4.4230E-01

-3.6996E-01

1.8793E-01

-6.2147E-02

1.3149E-02

-1.6236E-03

8.9197E-05

S8

8.4129E-02

-3.6111E-02

1.0351E-02

-1.9736E-03

2.4050E-04

-1.6956E-05

5.2616E-07

S9

-1.2484E-03

2.7393E-04

-4.4852E-05

5.1861E-06

-3.9435E-07

1.7552E-08

-3.4514E-10

S10

-3.4419E-04

4.2260E-05

-3.3112E-06

1.4736E-07

-2.1722E-09

-8.5916E-11

3.0680E-12

S11

2.7948E-06

-3.1006E-07

2.3352E-08

-1.1796E-09

3.8385E-11

-7.2901E-13

6.1505E-15

S12

1.7007E-05

-1.3058E-06

7.2596E-08

-2.8393E-09

7.3988E-11

-1.1520E-12

8.0986E-15

TABLE 3

Fig. 2A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 2A to 2C, the imaging lens system according to embodiment 1 can achieve good imaging quality.

Practice ofExample 2

An imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4C. Fig. 3 shows a schematic configuration diagram of an imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

In this example, the total effective focal length f of the imaging lens is 5.18mm, and the maximum field angle FOV of the imaging lens is 90.2 °.

Table 4 shows basic parameters of the imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm). Tables 5 and 6 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of each aspherical mirror surface S1-S12 which can be used in example 2. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 4

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-2.4337E-03

2.8053E-02

-1.1399E-01

2.2748E-01

9.0685E-02

-1.7731E+00

5.0239E+00

S2

-3.1477E-02

-6.8260E-02

7.9326E-01

-4.5774E+00

1.6994E+01

-4.2857E+01

7.5820E+01

S3

-5.1037E-02

7.8181E-02

-3.5810E-01

1.8411E+00

-6.1353E+00

1.3773E+01

-2.1474E+01

S4

-2.4077E-02

1.5134E-01

-1.3080E+00

8.9497E+00

-4.0281E+01

1.2414E+02

-2.6942E+02

S5

-5.0273E-02

1.3909E-01

-1.2195E+00

6.9473E+00

-2.7102E+01

7.3873E+01

-1.4338E+02

S6

-3.8189E-02

-1.2942E-01

1.0095E+00

-4.6722E+00

1.4092E+01

-2.9263E+01

4.3034E+01

S7

-8.6380E-02

-2.3652E-02

1.3784E-01

-2.4069E-01

1.9049E-01

5.9485E-02

-3.3128E-01

S8

-8.5147E-02

-4.7703E-03

4.9286E-02

-5.8017E-02

2.9734E-02

8.3249E-03

-2.5326E-02

S9

-2.4798E-03

-3.7468E-02

4.9258E-02

-4.8771E-02

3.5761E-02

-1.8900E-02

7.1941E-03

S10

2.7778E-02

-2.9791E-02

3.4121E-02

-2.8349E-02

1.6408E-02

-6.3799E-03

1.6545E-03

S11

-1.5626E-01

6.7135E-02

-1.8170E-02

2.7356E-03

8.3172E-05

-1.4202E-04

3.4655E-05

S12

-1.8181E-01

1.0137E-01

-4.6662E-02

1.6446E-02

-4.3132E-03

8.3492E-04

-1.1933E-04

TABLE 5

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-8.0227E+00

8.3309E+00

-5.8343E+00

2.7425E+00

-8.3082E-01

1.4673E-01

-1.1485E-02

S2

-9.5775E+01

8.6804E+01

-5.5989E+01

2.5072E+01

-7.4048E+00

1.2962E+00

-1.0181E-01

S3

2.3483E+01

-1.7873E+01

9.1950E+00

-2.9903E+00

5.2001E-01

-2.1231E-02

-4.3737E-03

S4

4.1807E+02

-4.6570E+02

3.6928E+02

-2.0338E+02

7.3929E+01

-1.5945E+01

1.5451E+00

S5

2.0019E+02

-2.0123E+02

1.4408E+02

-7.1586E+01

2.3421E+01

-4.5319E+00

3.9245E-01

S6

-4.5471E+01

3.4626E+01

-1.8827E+01

7.1254E+00

-1.7825E+00

2.6480E-01

-1.7680E-02

S7

4.0997E-01

-2.9436E-01

1.3805E-01

-4.3080E-02

8.6628E-03

-1.0185E-03

5.3260E-05

S8

1.9939E-02

-8.9803E-03

2.5723E-03

-4.7625E-04

5.5269E-05

-3.6574E-06

1.0528E-07

S9

-1.9944E-03

4.0373E-04

-5.8883E-05

5.9958E-06

-4.0258E-07

1.5959E-08

-2.8223E-10

S10

-2.8555E-04

3.2131E-05

-2.1884E-06

6.7105E-08

1.3935E-09

-1.7497E-10

4.0141E-12

S11

-4.8736E-06

4.5554E-07

-2.9313E-08

1.2903E-09

-3.7241E-11

6.3654E-13

-4.8915E-15

S12

1.2587E-05

-9.7425E-07

5.4509E-08

-2.1408E-09

5.5890E-11

-8.6975E-13

6.0981E-15

TABLE 6

Fig. 4A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 4A to 4C, the imaging lens according to embodiment 2 can achieve good imaging quality.

Example 3

An imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6C. Fig. 5 shows a schematic configuration diagram of an imaging lens according to embodiment 3 of the present application.

As shown in fig. 5, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

In the present example, the total effective focal length f of the imaging lens is 6.28mm, and the maximum field angle FOV of the imaging lens is 89.3 °.

Table 7 shows basic parameters of the imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm). Tables 8 and 9 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1-S12 in example 3. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 7

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

8.8977E-04

-4.9764E-03

3.4729E-02

-1.2426E-01

2.7941E-01

-4.2547E-01

4.5603E-01

S2

-1.8526E-02

-9.8631E-03

1.1254E-01

-4.8331E-01

1.3035E+00

-2.3510E+00

2.9400E+00

S3

-2.5630E-02

2.7354E-03

7.2103E-02

-2.9171E-01

7.7988E-01

-1.4429E+00

1.8838E+00

S4

-1.3451E-02

5.4763E-02

-2.9706E-01

1.3252E+00

-3.9784E+00

8.3235E+00

-1.2421E+01

S5

-2.0332E-02

-1.2830E-02

5.7684E-02

-1.6480E-01

2.6311E-01

-2.0563E-01

-4.1164E-02

S6

-2.1857E-02

-2.7838E-02

1.4266E-01

-4.5686E-01

9.6096E-01

-1.3959E+00

1.4349E+00

S7

-4.5652E-02

-1.9880E-02

6.2588E-02

-9.1223E-02

8.7730E-02

-5.7937E-02

2.5639E-02

S8

-4.5903E-02

-9.3364E-03

2.2294E-02

-1.6988E-02

6.3359E-03

2.0643E-04

-1.5496E-03

S9

9.4485E-04

-1.8775E-02

1.5357E-02

-9.2210E-03

4.2171E-03

-1.4373E-03

3.6113E-04

S10

1.9529E-02

-1.6608E-02

1.2594E-02

-7.0845E-03

2.8588E-03

-7.9721E-04

1.5321E-04

S11

-8.1163E-02

2.1036E-02

-2.9834E-03

9.4874E-05

6.5159E-05

-1.6711E-05

2.2234E-06

S12

-9.8822E-02

3.6870E-02

-1.1451E-02

2.7348E-03

-4.8637E-04

6.3814E-05

-6.1783E-06

TABLE 8

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-3.5100E-01

1.9518E-01

-7.7817E-02

2.1705E-02

-4.0230E-03

4.4511E-04

-2.2242E-05

S2

-2.6025E+00

1.6424E+00

-7.3417E-01

2.2709E-01

-4.6217E-02

5.5660E-03

-3.0043E-04

S3

-1.7592E+00

1.1796E+00

-5.6319E-01

1.8677E-01

-4.0868E-02

5.3031E-03

-3.0889E-04

S4

1.3371E+01

-1.0392E+01

5.7708E+00

-2.2309E+00

5.6989E-01

-8.6429E-02

5.8900E-03

S5

2.8541E-01

-3.3523E-01

2.2050E-01

-9.0910E-02

2.3349E-02

-3.4255E-03

2.1963E-04

S6

-1.0575E+00

5.6033E-01

-2.1152E-01

5.5476E-02

-9.6024E-03

9.8583E-04

-4.5441E-05

S7

-6.8415E-03

5.8830E-04

2.9537E-04

-1.3106E-04

2.4953E-05

-2.4507E-06

1.0092E-07

S8

8.7750E-04

-2.7354E-04

5.3996E-05

-6.9011E-06

5.5448E-07

-2.5483E-08

5.1103E-10

S9

-6.7114E-05

9.2028E-06

-9.1499E-07

6.3716E-08

-2.9288E-09

7.9468E-11

-9.6122E-13

S10

-2.0513E-05

1.9286E-06

-1.2695E-07

5.7368E-09

-1.6979E-10

2.9685E-12

-2.3275E-14

S11

-1.9287E-07

1.1578E-08

-4.8740E-10

1.4173E-11

-2.7177E-13

3.0965E-15

-1.5894E-17

S12

4.4131E-07

-2.3125E-08

8.7581E-10

-2.3280E-11

4.1125E-13

-4.3296E-15

2.0533E-17

TABLE 9

Fig. 6A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 3, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 6A to 6C, the imaging lens system according to embodiment 3 can achieve good imaging quality.

Example 4

An imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8C. Fig. 7 shows a schematic configuration diagram of an imaging lens according to embodiment 4 of the present application.

As shown in fig. 7, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

In this example, the total effective focal length f of the imaging lens is 5.24mm, and the maximum field angle FOV of the imaging lens is 90.6 °.

Table 10 shows basic parameters of the imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm). Tables 11 and 12 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1 to S12 in example 4. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.

Watch 10

TABLE 11

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

3.0780E+01

-2.4479E+01

1.3811E+01

-5.3924E+00

1.3845E+00

-2.1012E-01

1.4274E-02

S2

-5.0504E+01

4.6055E+01

-2.9907E+01

1.3489E+01

-4.0136E+00

7.0800E-01

-5.6048E-02

S3

-2.7514E+00

5.7048E+00

-5.9595E+00

3.8026E+00

-1.4973E+00

3.3565E-01

-3.2860E-02

S4

9.5629E+02

-1.0889E+03

8.8263E+02

-4.9670E+02

1.8436E+02

-4.0566E+01

4.0066E+00

S5

-2.7200E+01

2.2461E+01

-1.2385E+01

4.2879E+00

-8.0098E-01

4.2794E-02

5.4737E-03

S6

-1.3796E+01

1.1473E+01

-6.7425E+00

2.7361E+00

-7.2907E-01

1.1474E-01

-8.0780E-03

S7

1.6980E-01

-1.4155E-01

7.3411E-02

-2.4915E-02

5.4057E-03

-6.8194E-04

3.8074E-05

S8

4.9692E-02

-1.9327E-02

5.1425E-03

-9.1918E-04

1.0541E-04

-7.0016E-06

2.0464E-07

S9

-1.0177E-03

2.1368E-04

-3.2961E-05

3.5762E-06

-2.5557E-07

1.0726E-08

-1.9949E-10

S10

-4.8594E-04

6.5652E-05

-6.1809E-06

3.9767E-07

-1.6680E-08

4.1128E-10

-4.5249E-12

S11

1.1806E-06

-6.4438E-08

2.7009E-09

-8.7298E-11

2.0982E-12

-3.3246E-14

2.5390E-16

S12

1.3937E-05

-1.0632E-06

5.8583E-08

-2.2648E-09

5.8178E-11

-8.9064E-13

6.1425E-15

TABLE 12

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

Example 5

An imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10C. Fig. 9 shows a schematic configuration diagram of an imaging lens according to embodiment 5 of the present application.

As shown in fig. 9, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

Table 13 shows basic parameters of the imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm). Tables 14 and 15 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1-S12 in example 5. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.

Watch 13

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-3.3824E-03

5.5480E-02

-4.2956E-01

2.1463E+00

-7.0747E+00

1.5917E+01

-2.5080E+01

S2

-3.1856E-02

-4.7079E-02

5.8381E-01

-3.3693E+00

1.2507E+01

-3.1541E+01

5.5772E+01

S3

-4.6293E-02

4.0842E-02

-3.8461E-02

1.2851E-01

-4.7627E-02

-1.2533E+00

4.9687E+00

S4

-2.7481E-02

2.6811E-01

-2.6397E+00

1.8271E+01

-8.3201E+01

2.5990E+02

-5.7249E+02

S5

-4.0071E-02

-5.8310E-03

1.6167E-01

-1.2138E+00

4.8325E+00

-1.2273E+01

2.0889E+01

S6

-4.7365E-02

-4.5414E-03

1.3951E-01

-9.2727E-01

3.4436E+00

-8.3643E+00

1.3940E+01

S7

-9.1296E-02

3.4591E-03

4.2621E-02

-4.2647E-02

-5.9942E-02

2.4197E-01

-3.7882E-01

S8

-8.9492E-02

1.5590E-02

-1.3819E-02

6.2301E-02

-1.2382E-01

1.4629E-01

-1.1472E-01

S9

-4.4870E-03

-2.7690E-02

2.8754E-02

-2.4434E-02

1.6781E-02

-8.6550E-03

3.2896E-03

S10

2.7135E-02

-2.9514E-02

3.6740E-02

-3.3431E-02

2.0778E-02

-8.6255E-03

2.4217E-03

S11

-1.6632E-01

7.9447E-02

-2.7918E-02

7.8010E-03

-1.6663E-03

2.7224E-04

-3.4506E-05

S12

-1.9211E-01

1.1093E-01

-5.2304E-02

1.8631E-02

-4.8875E-03

9.4068E-04

-1.3323E-04

TABLE 14

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

2.8097E+01

-2.2476E+01

1.2735E+01

-4.9881E+00

1.2837E+00

-1.9515E-01

1.3274E-02

S2

-7.0374E+01

6.3675E+01

-4.0980E+01

1.8302E+01

-5.3886E+00

9.4014E-01

-7.3583E-02

S3

-1.0136E+01

1.3070E+01

-1.1217E+01

6.4146E+00

-2.3535E+00

5.0178E-01

-4.7295E-02

S4

9.0257E+02

-1.0220E+03

8.2401E+02

-4.6141E+02

1.7046E+02

-3.7348E+01

3.6743E+00

S5

-2.4188E+01

1.8852E+01

-9.4523E+00

2.6851E+00

-2.3644E-01

-7.2966E-02

1.5971E-02

S6

-1.6332E+01

1.3574E+01

-7.9598E+00

3.2194E+00

-8.5435E-01

1.3383E-01

-9.3748E-03

S7

3.6721E-01

-2.4068E-01

1.0911E-01

-3.3876E-02

6.8903E-03

-8.2754E-04

4.4461E-05

S8

6.2134E-02

-2.3462E-02

6.1364E-03

-1.0871E-03

1.2428E-04

-8.2665E-06

2.4285E-07

S9

-9.3610E-04

1.9993E-04

-3.1288E-05

3.4331E-06

-2.4741E-07

1.0447E-08

-1.9518E-10

S10

-4.6851E-04

6.3155E-05

-5.9215E-06

3.7881E-07

-1.5775E-08

3.8573E-10

-4.2040E-12

S11

3.4097E-06

-2.5996E-07

1.4914E-08

-6.1852E-10

1.7399E-11

-2.9568E-13

2.2834E-15

S12

1.3900E-05

-1.0628E-06

5.8696E-08

-2.2741E-09

5.8544E-11

-8.9808E-13

6.2060E-15

Watch 15

Fig. 10A shows an on-axis chromatic aberration curve of the imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 10A to 10C, the imaging lens according to embodiment 5 can achieve good imaging quality.

Example 6

An imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12C. Fig. 11 shows a schematic configuration diagram of an imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

Table 16 shows basic parameters of the imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm). Tables 17 and 18 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1-S12 in example 6. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 16

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-3.3765E-03

3.9911E-02

-1.9875E-01

6.0896E-01

-1.0514E+00

5.8409E-01

1.5920E+00

S2

-3.1158E-02

-6.8671E-02

7.7896E-01

-4.4267E+00

1.6274E+01

-4.0794E+01

7.1925E+01

S3

-5.1029E-02

7.6682E-02

-3.2375E-01

1.5312E+00

-4.6269E+00

9.1660E+00

-1.2027E+01

S4

-2.3493E-02

1.4730E-01

-1.3037E+00

9.1085E+00

-4.1654E+01

1.2995E+02

-2.8464E+02

S5

-5.2975E-02

1.8308E-01

-1.6099E+00

9.1469E+00

-3.5452E+01

9.5977E+01

-1.8505E+02

S6

-3.7901E-02

-1.3612E-01

1.0567E+00

-4.8669E+00

1.4605E+01

-3.0171E+01

4.4138E+01

S7

-8.9106E-02

-8.5275E-03

6.7285E-02

-2.3867E-02

-2.5880E-01

7.0532E-01

-9.8955E-01

S8

-8.7435E-02

8.6433E-04

3.6352E-02

-3.5474E-02

7.8871E-04

3.5120E-02

-4.3069E-02

S9

-3.9400E-03

-3.5563E-02

4.8064E-02

-4.8553E-02

3.6027E-02

-1.9175E-02

7.3318E-03

S10

2.7127E-02

-3.1494E-02

3.9265E-02

-3.4370E-02

2.0570E-02

-8.2891E-03

2.2635E-03

S11

-1.5688E-01

6.7216E-02

-1.7485E-02

2.1380E-03

3.1942E-04

-1.9688E-04

4.2875E-05

S12

-1.8243E-01

1.0252E-01

-4.7611E-02

1.6921E-02

-4.4694E-03

8.7036E-04

-1.2503E-04

TABLE 17

Watch 18

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

Example 7

An imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14C. Fig. 13 shows a schematic configuration diagram of an imaging lens according to embodiment 7 of the present application.

As shown in fig. 13, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

In this example, the total effective focal length f of the imaging lens is 6.46mm, and the maximum field angle FOV of the imaging lens is 87.6 °.

Table 19 shows basic parameters of the imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm). Tables 20 and 21 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30, which are used for the aspherical mirrors S1-S12 in example 7. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.

Watch 19

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

2.1778E-03

-1.7395E-02

1.0252E-01

-3.5301E-01

7.8682E-01

-1.1992E+00

1.2909E+00

S2

-1.9683E-02

6.8653E-03

1.4289E-02

-1.2205E-01

4.1624E-01

-8.4546E-01

1.1374E+00

S3

-2.3259E-02

-1.8078E-02

1.9519E-01

-7.3860E-01

1.8291E+00

-3.1152E+00

3.7492E+00

S4

-1.8782E-02

1.3642E-01

-9.2627E-01

4.2593E+00

-1.2924E+01

2.6982E+01

-3.9811E+01

S5

-1.3800E-02

-7.9748E-02

4.2778E-01

-1.4486E+00

3.2379E+00

-4.9947E+00

5.4432E+00

S6

-2.2935E-02

-2.4859E-02

1.3081E-01

-4.3998E-01

9.7204E-01

-1.4723E+00

1.5647E+00

S7

-3.8411E-02

-5.0721E-02

1.3790E-01

-2.1659E-01

2.3616E-01

-1.8514E-01

1.0536E-01

S8

-3.8735E-02

-2.7981E-02

4.9055E-02

-4.3097E-02

2.4673E-02

-9.2430E-03

2.0594E-03

S9

8.4506E-03

-2.7375E-02

2.1336E-02

-1.2243E-02

5.3600E-03

-1.7655E-03

4.3325E-04

S10

2.5777E-02

-2.0439E-02

1.4057E-02

-7.5208E-03

2.9943E-03

-8.4364E-04

1.6635E-04

S11

-8.1667E-02

2.3461E-02

-4.1985E-03

4.5019E-04

-7.2363E-06

-5.8985E-06

1.0268E-06

S12

-1.0663E-01

4.2574E-02

-1.3891E-02

3.4294E-03

-6.2366E-04

8.3124E-05

-8.1436E-06

Watch 20

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-9.9840E-01

5.5716E-01

-2.2240E-01

6.1913E-02

-1.1413E-02

1.2515E-03

-6.1775E-05

S2

-1.0616E+00

7.0028E-01

-3.2604E-01

1.0492E-01

-2.2214E-02

2.7835E-03

-1.5632E-04

S3

-3.2396E+00

2.0185E+00

-8.9964E-01

2.7985E-01

-5.7724E-02

7.0964E-03

-3.9357E-04

S4

4.2105E+01

-3.2019E+01

1.7350E+01

-6.5322E+00

1.6232E+00

-2.3929E-01

1.5843E-02

S5

-4.2353E+00

2.3500E+00

-9.1685E-01

2.4372E-01

-4.1564E-02

4.0325E-03

-1.6450E-04

S6

-1.1833E+00

6.3934E-01

-2.4488E-01

6.4898E-02

-1.1313E-02

1.1664E-03

-5.3869E-05

S7

-4.3511E-02

1.2921E-02

-2.6949E-03

3.7693E-04

-3.2346E-05

1.4002E-06

-1.5722E-08

S8

-1.4769E-04

-5.8068E-05

2.1021E-05

-3.3393E-06

2.9780E-07

-1.4431E-08

2.9632E-10

S9

-7.9283E-05

1.0770E-05

-1.0658E-06

7.4154E-08

-3.4154E-09

9.3061E-11

-1.1321E-12

S10

-2.3119E-05

2.2789E-06

-1.5873E-07

7.6547E-09

-2.4366E-10

4.6131E-12

-3.9389E-14

S11

-9.5045E-08

5.7254E-09

-2.3526E-10

6.5784E-12

-1.2017E-13

1.2958E-15

-6.2629E-18

S12

5.8731E-07

-3.1039E-08

1.1852E-09

-3.1771E-11

5.6639E-13

-6.0225E-15

2.8875E-17

TABLE 21

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

Example 8

An imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16C. Fig. 15 shows a schematic configuration diagram of an imaging lens according to embodiment 8 of the present application.

As shown in fig. 15, the imaging lens includes, in order from an object side to an image side: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

In this example, the total effective focal length f of the imaging lens is 6.40mm, and the maximum field angle FOV of the imaging lens is 88.1 °.

Table 22 shows basic parameters of the imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness, and the focal length are all millimeters (mm). Tables 23 and 24 show the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28 and A30 of each aspherical mirror surface S1-S12 which can be used in example 8. Wherein each aspherical surface type can be defined by the formula (1) given in the above-described embodiment 1.

TABLE 22

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

3.0567E-03

-2.5432E-02

1.4596E-01

-5.0050E-01

1.1182E+00

-1.7111E+00

1.8491E+00

S2

-2.1980E-02

2.8833E-02

-1.2005E-01

3.7816E-01

-7.9499E-01

1.1557E+00

-1.1864E+00

S3

-2.4473E-02

-1.2331E-02

1.5041E-01

-5.3424E-01

1.2451E+00

-2.0042E+00

2.2884E+00

S4

-1.6501E-02

9.1643E-02

-5.4659E-01

2.3654E+00

-6.8566E+00

1.3826E+01

-1.9869E+01

S5

-1.4297E-02

-8.0073E-02

4.2348E-01

-1.4261E+00

3.1762E+00

-4.8877E+00

5.3188E+00

S6

-2.6390E-02

-1.2497E-02

8.4731E-02

-3.1810E-01

7.4182E-01

-1.1605E+00

1.2597E+00

S7

-4.8284E-02

-2.1012E-02

5.6339E-02

-5.3146E-02

8.6085E-03

3.6072E-02

-4.7190E-02

S8

-5.0322E-02

-1.3481E-02

3.1490E-02

-2.3814E-02

7.1410E-03

2.7891E-03

-3.9142E-03

S9

1.7931E-03

-2.6781E-02

2.6463E-02

-1.8297E-02

8.9434E-03

-3.1124E-03

7.8218E-04

S10

2.3650E-02

-2.2697E-02

1.9713E-02

-1.2039E-02

4.9808E-03

-1.4057E-03

2.7578E-04

S11

-8.7998E-02

3.6008E-02

-1.0561E-02

2.2514E-03

-3.3472E-04

3.4829E-05

-2.5561E-06

S12

-1.1224E-01

5.0681E-02

-1.7879E-02

4.5981E-03

-8.5335E-04

1.1495E-04

-1.1333E-05

TABLE 23

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-1.4349E+00

8.0288E-01

-3.2118E-01

8.9579E-02

-1.6541E-02

1.8168E-03

-8.9820E-05

S2

8.6461E-01

-4.4342E-01

1.5587E-01

-3.5534E-02

4.6629E-03

-2.4873E-04

-3.7693E-06

S3

-1.8836E+00

1.1234E+00

-4.8202E-01

1.4532E-01

-2.9268E-02

3.5405E-03

-1.9470E-04

S4

2.0598E+01

-1.5430E+01

8.2685E+00

-3.0888E+00

7.6366E-01

-1.1227E-01

7.4290E-03

S5

-4.1366E+00

2.2967E+00

-8.9781E-01

2.3949E-01

-4.1065E-02

4.0166E-03

-1.6597E-04

S6

-9.6703E-01

5.2853E-01

-2.0432E-01

5.4586E-02

-9.5842E-03

9.9484E-04

-4.6244E-05

S7

3.1964E-02

-1.3942E-02

4.1217E-03

-8.2598E-04

1.0790E-04

-8.3104E-06

2.8663E-07

S8

1.9745E-03

-5.9501E-04

1.1671E-04

-1.5052E-05

1.2339E-06

-5.8374E-08

1.2146E-09

S9

-1.4383E-04

1.9394E-05

-1.8926E-06

1.2959E-07

-5.8809E-09

1.5830E-10

-1.9085E-12

S10

-3.8236E-05

3.7749E-06

-2.6411E-07

1.2812E-08

-4.1027E-10

7.8056E-12

-6.6859E-14

S11

1.3140E-07

-4.5670E-09

9.6590E-11

-7.6815E-13

-1.5370E-14

4.4815E-16

-3.4458E-18

S12

8.2126E-07

-4.3606E-08

1.6736E-09

-4.5129E-11

8.0991E-13

-8.6759E-15

4.1932E-17

Watch 24

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

In summary, examples 1 to 8 satisfy the relationships shown in table 25, respectively.

Conditions/examples	1	2	3	4	5	6	7	8
									ImgH^2/(TTL*f)	0.90	0.86	0.83	0.88	0.88	0.86	0.81	0.83
f*tan(FOV/3)	3.06	3.00	3.60	3.05	3.05	3.00	3.61	3.61
									f3/f2-f3/f4	-0.83	-0.59	-0.57	-0.66	-0.65	-0.61	-0.57	-0.65
f4/f3	-1.06	-1.11	-1.10	-1.14	-1.13	-1.11	-1.05	-0.98
									f1/f5	1.09	1.10	1.10	1.07	1.07	1.10	1.07	1.09
f/f6	-1.71	-1.59	-1.59	-1.60	-1.59	-1.59	-1.70	-1.75
									f/(R3-R4)	0.75	0.74	0.85	0.71	0.71	0.78	0.94	1.11
R3/R6	-0.60	-0.88	-0.76	-0.87	-0.84	-0.84	-0.73	-0.60
									f/R7	0.07	0.09	0.09	0.08	0.09	0.11	0.07	0.16
f/R11	-0.01	-0.20	-0.22	-0.10	-0.13	-0.20	-0.35	-0.66
									R8/R9	1.19	1.05	1.12	1.09	1.09	1.01	1.16	1.32
(R9-R10)/(R9+R10)	1.80	1.77	1.93	1.78	1.81	1.78	1.97	2.78
									f/T56	7.08	6.84	6.81	6.91	6.91	6.83	7.00	6.94

TABLE 25

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

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. 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 imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having a positive optical power;

a second lens having an optical power;

a third lens having optical power;

a fourth lens having an optical power;

a fifth lens having a positive optical power;

a sixth lens having a negative optical power;

wherein, a half ImgH of a diagonal length of an effective pixel area on an imaging surface of the camera lens, a distance TTL on the optical axis from an object side surface of the first lens to the imaging surface of the camera lens, and a total effective focal length of the camera lens satisfy: 0.8 or more of ImgH ^2/(TTL ^ f) < 1.0; and

an effective focal length f2 of the second lens, an effective focal length f3 of the third lens, and an effective focal length f4 of the fourth lens satisfy: -1.0< f3/f2-f3/f4< -0.5.

2. The imaging lens according to claim 1, wherein an effective focal length f3 of the third lens and an effective focal length f4 of the fourth lens satisfy: -1.2< f4/f3< -0.9.

3. The imaging lens according to claim 1, wherein an effective focal length f1 of the first lens and an effective focal length f5 of the fifth lens satisfy: f1/f5 is more than or equal to 1.0 and less than or equal to 1.2.

4. The imaging lens according to claim 1, wherein a total effective focal length f of the imaging lens and an effective focal length f6 of the sixth lens satisfy: -2.0< f/f6< -1.5.

5. The imaging lens according to claim 1, wherein a total effective focal length f of the imaging lens and a radius of curvature R7 of an object side surface of the fourth lens satisfy: 0< f/R7< 0.3.

6. The imaging lens according to claim 1, wherein a total effective focal length f of the imaging lens and a radius of curvature R11 of an object side surface of the sixth lens satisfy: -1.0< f/R11< 0.

7. The imaging lens of claim 1, wherein the total effective focal length f of the imaging lens and the maximum field angle FOV of the imaging lens satisfy: f tan (FOV/3) is not less than 3.

8. The imaging lens according to claim 1, wherein a total effective focal length f of the imaging lens, a radius of curvature R3 of an object-side surface of the second lens, and a radius of curvature R4 of an image-side surface of the second lens satisfy: 0.7< f/(R3-R4) < 1.2.

9. The imaging lens according to claim 1, wherein a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R6 of an image-side surface of the third lens satisfy: -1.0< R3/R6< -0.5.

10. The imaging lens according to claim 1, wherein a radius of curvature R8 of an image-side surface of the fourth lens and a radius of curvature R9 of an object-side surface of the fifth lens satisfy: 1.0 is less than or equal to R8/R9 and less than 1.5.

11. The imaging lens according to claim 1, wherein a radius of curvature R9 of an object-side surface of the fifth lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: 1.5< (R9-R10)/(R9+ R10) < 3.0.

12. An imaging lens according to any one of claims 1 to 11, wherein a total effective focal length f of the imaging lens and a separation distance T56 on the optical axis between the fifth lens and the sixth lens satisfy: 6< f/T56< 8.

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

a first lens having a positive optical power;

a second lens having an optical power;

a third lens having optical power;

a fourth lens having an optical power;

a fifth lens having a positive optical power;

a sixth lens having a negative optical power;

wherein the total effective focal length f of the camera lens and the maximum field angle FOV of the camera lens satisfy: f tan (FOV/3) is not less than 3; and

an effective radius R3 of an object-side surface of the second lens and an effective radius R6 of an image-side surface of the third lens satisfy: -1.0< R3/R6< -0.5.

14. The imaging lens of claim 13, wherein a half ImgH of a diagonal length of an effective pixel area on an imaging surface of the imaging lens, a distance TTL on the optical axis from an object side surface of the first lens to the imaging surface of the imaging lens, and a total effective focal length of the imaging lens satisfy: 0.8-0 ImgH ^2/(TTL ^ f) < 1.0.

15. The imaging lens according to claim 13, wherein an effective focal length f2 of the second lens, an effective focal length f3 of the third lens, and an effective focal length f4 of the fourth lens satisfy: -1.0< f3/f2-f3/f4< -0.5.

16. The imaging lens of claim 13, wherein an effective focal length f3 of the third lens and an effective focal length f4 of the fourth lens satisfy: -1.2< f4/f3< -0.9.

17. The imaging lens of claim 13, wherein an effective focal length f1 of the first lens and an effective focal length f5 of the fifth lens satisfy: f1/f5 is more than or equal to 1.0 and less than or equal to 1.2.

18. An imaging lens according to claim 13, wherein a total effective focal length f of the imaging lens and an effective focal length f6 of the sixth lens satisfy: -2.0< f/f6< -1.5.

19. The imaging lens of claim 13, wherein a total effective focal length f of the imaging lens, a radius of curvature R3 of an object-side surface of the second lens, and a radius of curvature R4 of an image-side surface of the second lens satisfy: 0.7< f/(R3-R4) < 1.2.

20. An imaging lens according to claim 13, wherein a total effective focal length f of the imaging lens and a radius of curvature R7 of an object side surface of the fourth lens satisfy: 0< f/R7< 0.3.

21. An imaging lens according to claim 13, wherein a total effective focal length f of the imaging lens and a radius of curvature R11 of an object side surface of the sixth lens satisfy: -1.0< f/R11< 0.

22. The imaging lens of claim 13, wherein a radius of curvature R8 of an image-side surface of the fourth lens and a radius of curvature R9 of an object-side surface of the fifth lens satisfy: 1.0 is less than or equal to R8/R9 and less than 1.5.

23. The imaging lens of claim 13, wherein a radius of curvature R9 of an object-side surface of the fifth lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: 1.5< (R9-R10)/(R9+ R10) < 3.0.

24. An imaging lens according to any one of claims 13 to 23, wherein a total effective focal length f of the imaging lens and a separation distance T56 between the fifth lens and the sixth lens on the optical axis satisfy: 6< f/T56< 8.

25. An electronic apparatus comprising the imaging lens according to claim 1 or 13 and an imaging element for converting an optical pattern formed by the imaging lens into an electrical signal.