CN213659083U

CN213659083U - Optical imaging lens

Info

Publication number: CN213659083U
Application number: CN202023220490.6U
Authority: CN
Inventors: 李艳萍; 周琼花; 贺凌波; 黄林; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-07-09
Anticipated expiration: 2030-12-28

Abstract

The application discloses an optical imaging lens, which sequentially comprises from an object side to an image side along an optical axis: a first lens having an optical power; a second lens having a refractive power, an object side surface of which is concave; a third lens having a refractive power, an object side surface of which is concave; a diaphragm; a fourth lens having an optical power; a fifth lens having a refractive power, an object side surface of which is concave; and a sixth lens having a refractive power, an image-side surface of which is convex. Half of the Semi-FOV of the maximum field angle of the optical imaging lens may satisfy: Semi-FOV is more than or equal to 70 degrees; and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens can meet the following requirements: TTL/f is more than 3.5 and less than 5.1.

Description

Optical imaging lens

Technical Field

The application relates to the field of optical elements, in particular to an optical imaging lens.

Background

In recent years, with the rapid development of portable electronic products such as smartphones, the shooting function thereof has become one of the main reasons for product upgrading, and users have increasingly demanded imaging quality of optical imaging lenses applied to smartphones. At present, the tendency of utilizing a mobile phone to shoot instead of a traditional camera is more and more obvious, and users are more and more favored for mobile phones with high-quality shooting function.

An optical imaging lens with a long depth of field and a long-range feeling is easy to generate, and the infectivity of pictures can be enhanced, so that a photographer has an immersive feeling, and the optical imaging lens gradually becomes one of the main development trends in the field of optical imaging lenses applied to smart phones.

SUMMERY OF THE UTILITY MODEL

An aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having a refractive power, an object side surface of which is concave; a third lens having a refractive power, an object side surface of which is concave; a diaphragm; a fourth lens having an optical power; a fifth lens having a refractive power, an object side surface of which is concave; and a sixth lens having a refractive power, an image-side surface of which is convex. Half of the Semi-FOV of the maximum field angle of the optical imaging lens may satisfy: Semi-FOV is more than or equal to 70 degrees; and the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens can meet the following requirements: TTL/f is more than 3.5 and less than 5.1.

In one embodiment, the object-side surface of the first lens element and the image-side surface of the sixth lens element have at least one aspheric mirror surface.

In one embodiment, the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens may satisfy: -2.5 < f1/f4 < -1.5.

In one embodiment, the effective focal length f3 of the third lens and the effective focal length f5 of the fifth lens may satisfy: -1.5 < f3/f5 < -2.5.

In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R12 of the image-side surface of the sixth lens may satisfy: 3.0 < R12/R3 < 4.5.

In one embodiment, the radius of curvature R4 of the image-side surface of the second lens and the radius of curvature R5 of the object-side surface of the third lens may satisfy: 1.0 < | R5/R4| < 5.0.

In one embodiment, the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R7 of the object-side surface of the fourth lens may satisfy: r6 is more than-2.0 and R7 is less than or equal to-1.0.

In one embodiment, 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: -3.0 < R10/R9 < -1.0.

In one embodiment, the radius of curvature R1 of the object side surface of the first lens and the total effective focal length f of the optical imaging lens satisfy: -2.5 < R1/f < -1.0.

In one embodiment, the separation distance T12 between the first lens and the second lens on the optical axis and the central thickness CT1 of the first lens on the optical axis may satisfy: T12/CT1 is more than 1.0 and less than 2.0.

In one embodiment, the distance T56 between the fifth lens and the sixth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis may satisfy: T56/CT6 is more than or equal to 1.0 and less than or equal to 3.5.

In one embodiment, the central thickness CT2 of the second lens on the optical axis and the separation distance T23 of the second lens and the third lens on the optical axis may satisfy: 2.5 < CT2/T23 < 4.5.

In one embodiment, the half of the diagonal length ImgH of the effective pixel area on the imaging plane of the optical imaging lens and the total effective focal length f of the optical imaging lens may satisfy: 1.5 < ImgH/f < 2.1.

Another aspect of the present disclosure provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having a refractive power, an object side surface of which is concave; a third lens having a refractive power, an object side surface of which is concave; a diaphragm; a fourth lens having an optical power; a fifth lens having a refractive power, an object side surface of which is concave; and a sixth lens with a focal power, an image side surface of which is convex; half of the Semi-FOV of the maximum field angle of the optical imaging lens may satisfy: Semi-FOV is more than or equal to 70 degrees; and the distance T56 between the fifth lens and the sixth lens on the optical axis and the central thickness CT6 of the sixth lens on the optical axis may satisfy: T56/CT6 is more than or equal to 1.0 and less than or equal to 3.5.

In one embodiment, the distance TTL between the object side surface of the first lens element and the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens may satisfy: TTL/f is more than 3.5 and less than 5.1.

The application provides an optical imaging lens which is applicable to portable electronic products and has at least one beneficial effect of wide angle, small distortion, miniaturization, good imaging quality and the like through reasonable distribution focal power and optimization of optical parameters.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;

fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;

fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;

fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;

fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;

fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;

fig. 7 is a schematic structural view showing an optical imaging lens 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 optical imaging lens of embodiment 4;

fig. 9 is a schematic structural view showing an optical imaging lens 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 optical imaging lens of embodiment 5;

fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application; and

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

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.

An optical imaging 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 along the optical axis in sequence from the object side to the image side. Any adjacent two lenses of the first lens to the sixth lens can have a spacing distance therebetween.

In an exemplary embodiment, the first lens may have a positive power or a negative power; the second lens can have positive focal power or negative focal power, and the object side surface of the second lens can be a concave surface; the third lens can have positive focal power or negative focal power, and the object side surface of the third lens can be a concave surface; the fourth lens may have a positive power or a negative power; the fifth lens can have positive focal power or negative focal power, and the object side surface of the fifth lens can be a concave surface; and the sixth lens can have positive power or negative power, and the image side surface of the sixth lens can be convex.

In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the third lens and the fourth lens. The diaphragm is arranged in the middle of the optical imaging lens, the optical imaging lens can be in a symmetrical structure, distortion and vertical axis chromatic aberration of the lens can be improved, and imaging quality can be improved. In an example, the first lens may be substantially symmetrical with the sixth lens about the diaphragm, the second lens may be substantially symmetrical with the fifth lens about the diaphragm, and the third lens may be substantially symmetrical with the fourth lens about the diaphragm.

In the exemplary embodiment, by reasonably setting the focal power and the surface type characteristics of each lens, the low-order aberration of the optical imaging lens can be effectively balanced, so that the optical imaging lens has better imaging quality and processing characteristics. The object side surfaces of the second lens and the third lens are both concave surfaces, so that the field angle of the optical imaging lens can be improved, light rays can be converged better, and the image quality of the lens is improved. Through the concave-convex surface type that sets up fifth lens and sixth lens rationally, can guarantee that fifth lens and sixth lens have good processing nature, make the structure of camera lens compacter.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: the Semi-FOV is more than or equal to 70 degrees, wherein the Semi-FOV is half of the maximum field angle of the optical imaging lens. The Semi-FOV is more than or equal to 70 degrees, and the object information in a larger view field range can be obtained.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -2.5 < f1/f4 < -1.5, wherein f1 is the effective focal length of the first lens and f4 is the effective focal length of the fourth lens. More specifically, f1 and f4 may further satisfy: -2.4 < f1/f4 < -1.6. Satisfying-2.5 < f1/f4 < -1.5, the field curvature contributions of the first lens and the fourth lens can be reasonably controlled, and the field curvature after being balanced by the first lens and the fourth lens is favorably controlled within a reasonable range.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -1.5 < f3/f5 < -2.5, wherein f3 is the effective focal length of the third lens and f5 is the effective focal length of the fifth lens. More specifically, f3 and f5 may further satisfy: -1.5 < f3/f5 < -2.1. Satisfy-1.5 < f3/f5 < -2.5, can reduce the deflection angle of light, improve the imaging quality of optical imaging lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 3.0 < R12/R3 < 4.5, wherein R3 is the radius of curvature of the object-side surface of the second lens, and R12 is the radius of curvature of the image-side surface of the sixth lens. More specifically, R12 and R3 may further satisfy: 3.3 < R12/R3 < 4.4. The optical imaging lens meets the requirements that R12/R3 is more than 3.0 and less than 4.5, and on-axis aberration generated by the optical imaging lens can be effectively balanced.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.0 < | R5/R4| < 5.0, wherein R4 is the radius of curvature of the image-side surface of the second lens and R5 is the radius of curvature of the object-side surface of the third lens. Satisfy 1.0 < | R5/R4| < 5.0, be favorable to reducing the spherical aberration within a certain range to improve imaging quality.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -2.0 < R6/R7 ≦ -1.0, where R6 is the radius of curvature of the image-side surface of the third lens and R7 is the radius of curvature of the object-side surface of the fourth lens. More specifically, R6 and R7 may further satisfy: r6 is more than-1.8 and R7 is less than or equal to-1.0. The optical imaging lens can better match the chief ray angle of the chip by satisfying the condition that R6/R7 is more than-2.0 and less than or equal to-1.0.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -3.0 < R10/R9 < -1.0, wherein R9 is the radius of curvature of the object-side surface of the fifth lens and R10 is the radius of curvature of the image-side surface of the fifth lens. More specifically, R10 and R9 may further satisfy: -2.8 < R10/R9 < -1.3. The requirement of-3.0 < R10/R9 < 1.0 is met, the distortion amount of the lens can be controlled within a reasonable range, and the lens is ensured to have better imaging quality.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -2.5 < R1/f < -1.0, wherein R1 is the radius of curvature of the object side of the first lens and f is the total effective focal length of the optical imaging lens. More specifically, R1 and f further satisfy: -2.4 < R1/f < -1.1. The optical imaging lens meets the condition that R1/f is more than-2.5 and less than-1.0, and the object side surface of the first lens has enough convergence capacity to adjust the focusing position of the light beam, thereby being beneficial to shortening the total length of the optical imaging lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.0 < T12/CT1 < 2.0, wherein T12 is a distance between the first lens and the second lens on the optical axis, and CT1 is a central thickness of the first lens on the optical axis. The optical imaging lens meets the requirement that T12/CT1 is more than 1.0 and less than 2.0, the sizes of the first lens and the second lens are uniformly distributed, the assembly stability is ensured, the integral aberration of the optical imaging lens is reduced, and the total length of the optical imaging lens is shortened.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.0 ≦ T56/CT6 < 3.5, where T56 is the distance between the fifth lens and the sixth lens on the optical axis, and CT6 is the center thickness of the sixth lens on the optical axis. The size of the fifth lens and the size of the sixth lens are uniformly distributed to ensure the assembly stability, reduce the integral aberration of the optical imaging lens and shorten the total length of the optical imaging lens when the condition that T56/CT6 is more than or equal to 1.0 and less than 3.5 is met.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 2.5 < CT2/T23 < 4.5, wherein CT2 is the central thickness of the second lens on the optical axis, and T23 is the separation distance between the second lens and the third lens on the optical axis. More specifically, CT2 and T23 further satisfy: 2.9 < CT2/T23 < 4.4. The requirements of 2.5 < CT2/T23 < 4.5 are met, the sizes of the second lens and the third lens are uniformly distributed, the assembly stability is guaranteed, the integral aberration of the optical imaging lens is reduced, and the total length of the optical imaging lens is shortened.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: and the TTL/f is more than 3.5 and less than 5.1, wherein the TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, and f is the total effective focal length of the optical imaging lens. More specifically, TTL and f further may satisfy: TTL/f is more than 3.8 and less than 5.1. The TTL/f is more than 3.5 and less than 5.1, and the long-focus characteristic of the optical imaging lens is favorably ensured.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.5 < ImgH/f < 2.1, wherein ImgH is half of the diagonal length of an effective pixel area on an imaging surface of the optical imaging lens, and f is the total effective focal length of the optical imaging lens. The requirement that ImgH/f is more than 1.5 and less than 2.1 is met, and the size of the field of view of the optical imaging lens can be effectively controlled.

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

The application provides an ultra-wide angle imaging lens with a middle diaphragm, which can effectively improve distortion and vertical axis chromatic aberration and further realize good imaging quality. The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, the above six lenses. By reasonably distributing the focal power and the surface shape of each lens, the central thickness of each lens, the on-axis distance between each lens and the like, incident light can be effectively converged, the optical total length of the imaging lens is reduced, the machinability of the imaging lens is improved, and the optical imaging lens is more beneficial to production and processing.

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 sixth 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, 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 optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although six lenses are exemplified in the embodiment, the optical imaging lens is not limited to including six lenses. The optical imaging lens may also include other numbers of lenses, if desired.

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

Example 1

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

As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a stop STO, 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 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 concave object-side surface S3 and a convex 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 positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex 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 optical 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 the present example, the total effective focal length f of the optical imaging lens is 1.41mm, the total length TTL of the optical imaging lens (i.e., the distance on the optical axis from the object-side surface S1 of the first lens E1 to the imaging surface S15 of the optical imaging lens) is 5.80mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S15 of the optical imaging lens is 2.39mm, the half Semi-FOV of the maximum angle of view of the optical imaging lens is 76.1 °, and the aperture value Fno of the optical imaging lens is 1.80.

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; paraxial curvature of aspheric surfaceAnd c is 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. The high-order term coefficients A that can be used for the aspherical mirror surfaces S1 through S12 in example 1 are shown in tables 2-1 and 2-2 below₄、A₆、A₈、A₁₀、A₁₂、A₁₄、A₁₆、A₁₈、A₂₀、A₂₂、A₂₄、A₂₆、A₂₈And A₃₀。

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.5502E+00

-2.9722E-01

1.0024E-01

-3.6051E-02

1.4648E-02

-6.2085E-03

2.7785E-03

S2

3.0378E-01

-2.5726E-02

5.6597E-03

-4.8493E-04

2.1253E-04

1.0718E-04

-5.0631E-05

S3

-6.3270E-02

-3.8412E-03

1.3502E-03

1.3337E-04

-3.1405E-05

-2.0020E-05

1.7441E-06

S4

6.6472E-02

-4.5310E-04

9.6020E-04

1.1301E-04

2.4354E-05

5.3584E-07

3.4212E-06

S5

5.3122E-02

-8.0016E-03

1.4026E-03

1.3951E-04

6.1404E-05

1.2946E-05

3.3422E-06

S6

-1.8086E-02

-3.4425E-03

1.2232E-03

5.7359E-05

9.2274E-05

1.3228E-05

9.8862E-06

S7

-2.5338E-02

-2.9808E-03

8.0080E-04

1.1448E-04

1.0683E-04

7.8209E-06

4.6986E-06

S8

-2.2604E-03

1.0379E-03

2.0723E-03

9.4579E-05

2.9936E-04

6.0867E-06

2.4789E-05

S9

-3.9472E-02

1.1967E-02

3.2833E-04

-7.1010E-04

2.7529E-04

-7.6428E-05

4.3305E-05

S10

6.3053E-02

6.9152E-03

-9.5017E-04

-4.9638E-04

1.7672E-04

-4.3084E-05

1.3749E-05

S11

-3.0094E-01

2.4553E-02

4.3641E-02

2.1606E-02

4.6616E-03

-5.8197E-03

-7.7197E-03

S12

-1.8152E-01

-1.5650E-01

8.3442E-02

2.2229E-02

6.0279E-02

2.5040E-02

2.5109E-02

TABLE 2-1

Tables 2 to 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical 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 an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens 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 optical imaging lens 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 optical imaging lens according to embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens 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 structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a stop STO, 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 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 concave object-side surface S3 and a convex 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 positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex 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.

In this example, the total effective focal length f of the optical imaging lens is 1.50mm, the total length TTL of the optical imaging lens is 5.80mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.39mm, the half Semi-FOV of the maximum angle of view of the optical imaging lens is 70.8 °, and the aperture value Fno of the optical imaging lens is 1.80.

Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Tables 4-1, 4-2 show the 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 the formula (1) given in example 1 above.

TABLE 3

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.5927E+00

-3.0507E-01

1.0135E-01

-3.4232E-02

1.3677E-02

-5.7135E-03

2.6207E-03

S2

3.5665E-01

-2.8011E-02

6.3869E-03

-1.0016E-03

4.4253E-04

-1.8984E-05

-7.1974E-06

S3

-5.1915E-02

-5.7668E-03

1.2332E-03

1.3397E-04

1.5202E-05

-4.0036E-05

1.1688E-05

S4

6.0828E-02

2.9518E-04

7.5555E-04

1.2654E-04

2.9491E-05

1.7429E-06

2.9758E-06

S5

4.2467E-02

-6.8681E-03

1.6882E-03

3.2935E-04

1.0959E-04

2.5973E-05

6.7885E-06

S6

-1.6844E-02

-3.8689E-03

1.1134E-03

6.5057E-05

8.1220E-05

1.4755E-05

8.0166E-06

S7

-1.8411E-02

-2.4736E-03

1.2383E-03

2.1326E-04

1.0983E-04

1.8839E-05

7.0114E-06

S8

-1.0819E-03

1.8615E-03

1.2753E-03

1.9622E-04

1.5983E-04

3.5278E-05

1.4140E-05

S9

-3.1766E-02

1.3302E-02

-3.6597E-04

2.5667E-04

3.8315E-04

-1.0328E-05

-2.1140E-05

S10

5.1607E-02

4.6752E-03

-9.5880E-04

-2.5829E-04

1.0037E-04

-3.0660E-05

1.8326E-05

S11

-4.0734E-01

4.3127E-02

8.3160E-02

3.9166E-02

1.5331E-02

-9.6187E-03

-1.4065E-02

S12

-1.7766E-01

-1.2810E-01

3.7373E-02

-2.6116E-02

1.6032E-02

-7.4921E-03

5.0703E-03

TABLE 4-1

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-1.2294E-03

5.8867E-04

-2.8076E-04

1.3039E-04

-5.0360E-05

1.2514E-05

-1.3683E-06

S2

2.3912E-05

-1.2716E-05

3.6311E-06

-2.0254E-06

4.9795E-06

-3.0815E-06

6.0367E-07

S3

-5.1403E-06

2.3122E-06

-4.7240E-07

0.0000E+00

S4

-7.3271E-07

4.9727E-07

0.0000E+00

S5

-5.2651E-08

-9.2088E-07

0.0000E+00

S6

-5.3543E-08

2.2147E-06

0.0000E+00

S7

2.8404E-06

-7.1290E-07

4.2828E-07

-8.2942E-07

-1.4050E-07

-6.0455E-07

5.9146E-07

S8

8.7362E-06

1.0381E-06

7.2151E-07

0.0000E+00

S9

-2.7408E-05

-1.3257E-05

3.2704E-06

7.3371E-07

0.0000E+00

S10

-1.0396E-05

9.3395E-06

-6.3014E-06

3.4727E-06

-2.5467E-06

1.6233E-06

-4.3200E-07

S11

-1.2408E-02

-5.9848E-03

-1.2321E-03

1.1679E-03

1.4625E-03

9.2461E-04

3.0374E-04

S12

-2.3706E-03

1.4805E-03

-5.5973E-04

3.4463E-04

-2.4252E-04

1.7709E-04

-6.2422E-05

TABLE 4-2

Fig. 4A shows an on-axis chromatic aberration curve of the optical 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 an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens 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 optical imaging lens 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 optical imaging lens according to embodiment 2 can achieve good imaging quality.

Example 3

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

As shown in fig. 5, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a stop STO, 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 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 concave 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 positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex 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.

In this example, the total effective focal length f of the optical imaging lens is 1.45mm, the total length TTL of the optical imaging lens is 5.80mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.39mm, the half Semi-FOV of the maximum angle of view of the optical imaging lens is 70.8 °, and the aperture value Fno of the optical imaging lens is 1.80.

Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Tables 6-1, 6-2 show the 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 the formula (1) given in example 1 above.

TABLE 5

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.5864E+00

-3.1165E-01

1.0503E-01

-3.5394E-02

1.3912E-02

-5.6951E-03

2.5711E-03

S2

3.3929E-01

-2.7671E-02

5.0896E-03

-5.9089E-04

3.1057E-04

9.2983E-06

-1.3047E-05

S3

-4.4814E-02

-8.4247E-03

2.4431E-03

-5.3643E-05

2.2687E-05

-5.4872E-05

2.0009E-05

S4

5.4551E-02

1.9606E-03

1.5725E-03

3.0926E-04

8.4421E-05

2.0443E-05

9.3129E-06

S5

3.2435E-02

-4.7687E-03

3.0745E-03

8.3438E-04

2.6223E-04

6.1497E-05

5.7842E-06

S6

-1.5614E-02

-5.1834E-03

1.5775E-03

1.6511E-04

1.5177E-04

3.7440E-05

1.9257E-05

S7

-1.8468E-02

-6.2107E-03

7.1874E-04

-4.0490E-05

7.0703E-05

-2.7786E-06

2.3681E-06

S8

1.3860E-03

-2.0086E-03

8.0621E-04

-1.0542E-06

6.4492E-05

3.0170E-06

1.8759E-06

S9

-3.7568E-02

1.7245E-02

-7.8825E-04

-2.4684E-04

3.3432E-05

-4.8400E-06

1.1402E-05

S10

4.2525E-02

9.8041E-03

-1.0146E-03

-1.9840E-04

4.9486E-05

-3.6656E-05

1.9144E-05

S11

-4.4949E-01

4.1536E-02

7.4268E-02

3.8823E-02

1.8725E-02

-6.9057E-03

-1.4452E-02

S12

-1.9028E-01

-1.3197E-01

4.0864E-02

-2.7770E-02

1.8322E-02

-8.1474E-03

5.9291E-03

TABLE 6-1

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-1.1896E-03

5.7269E-04

-2.8236E-04

1.3451E-04

-5.0644E-05

1.1767E-05

-1.1762E-06

S2

2.6597E-05

-1.5175E-05

4.0153E-06

-1.7443E-06

4.8997E-06

-3.1443E-06

6.2589E-07

S3

-6.7654E-06

2.3128E-06

-3.7897E-07

0.0000E+00

S4

1.2965E-06

1.3790E-06

0.0000E+00

S5

-5.0825E-06

-4.5343E-06

0.0000E+00

S6

3.4515E-06

4.9199E-06

0.0000E+00

S7

9.5340E-07

-2.4071E-07

2.3638E-07

-1.9664E-08

4.6705E-07

-4.1785E-07

9.1100E-08

S8

3.4788E-06

-1.2811E-06

9.0678E-07

0.0000E+00

S9

5.2642E-06

-2.9425E-06

1.6410E-06

4.4663E-07

0.0000E+00

S10

-1.3130E-05

1.1227E-05

-6.8991E-06

4.4037E-06

-3.0420E-06

1.3163E-06

-2.2513E-07

S11

-1.5109E-02

-9.8567E-03

-4.4909E-03

-9.9038E-04

4.7457E-04

6.2323E-04

3.6928E-04

S12

-2.5408E-03

1.6452E-03

-6.5017E-04

4.3659E-04

-2.9239E-04

1.9517E-04

-7.8742E-05

TABLE 6-2

Fig. 6A shows an on-axis chromatic aberration curve of the optical 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 an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens 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 optical imaging lens 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 optical imaging lens according to embodiment 3 can achieve good imaging quality.

Example 4

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

As shown in fig. 7, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a stop STO, 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 negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave object-side surface S3 and a convex 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 positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave 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. 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.

In this example, the total effective focal length f of the optical imaging lens is 1.24mm, the total length TTL of the optical imaging lens is 5.80mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.39mm, the half Semi-FOV of the maximum angle of view of the optical imaging lens is 80.9 °, and the aperture value Fno of the optical imaging lens is 1.85.

Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Tables 8-1, 8-2 show the 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 the formula (1) given in example 1 above.

TABLE 7

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

1.5211E+00

-2.7802E-01

9.6755E-02

-3.6292E-02

1.5095E-02

-6.3902E-03

2.8166E-03

S2

2.1546E-01

-3.7190E-02

6.6394E-03

2.5274E-03

3.1908E-03

2.6482E-03

1.9988E-03

S3

-6.5582E-02

-3.9957E-03

2.1406E-03

3.7270E-05

-6.3120E-05

-2.5030E-05

7.4579E-06

S4

7.0022E-02

2.2501E-03

1.8819E-03

5.0141E-04

1.4892E-04

4.1628E-05

1.3644E-05

S5

5.2597E-02

-3.5166E-03

2.1255E-03

4.4334E-04

1.1301E-04

1.4790E-05

2.3778E-06

S6

-4.6667E-03

-2.3166E-03

2.4775E-03

5.1241E-04

3.1464E-04

1.1682E-04

6.4305E-05

S7

-1.4112E-02

-7.5272E-03

1.7714E-03

-7.0427E-05

1.9233E-04

4.6541E-06

2.4521E-05

S8

3.3237E-03

-2.7657E-03

2.9039E-03

-4.0157E-04

1.1125E-04

-3.3157E-05

2.5743E-05

S9

-8.4070E-02

1.6268E-02

1.4380E-03

-8.8387E-04

-1.1622E-04

-3.7775E-05

8.3814E-06

S10

3.1546E-02

1.3146E-02

-2.7481E-04

-5.7806E-04

5.1395E-05

-6.8028E-05

1.7052E-05

S11

-3.6330E-01

-2.7435E-02

7.7756E-03

-5.6846E-03

2.1516E-03

-4.9091E-04

3.2313E-04

S12

-2.0785E-01

-1.3623E-01

7.6229E-02

-2.3887E-02

3.0651E-02

-1.1882E-02

5.4858E-03

TABLE 8-1

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-1.2698E-03

5.8011E-04

-2.6458E-04

1.2260E-04

-5.0173E-05

1.3327E-05

-1.5373E-06

S2

1.4313E-03

9.1768E-04

5.5956E-04

3.0016E-04

1.4716E-04

6.0737E-05

2.3768E-05

S3

-3.8945E-06

3.3804E-06

-3.2315E-06

0.0000E+00

S4

3.0879E-06

5.7195E-07

0.0000E+00

S5

-8.2341E-07

-4.9331E-07

0.0000E+00

S6

2.4938E-05

1.1932E-05

0.0000E+00

S7

8.0091E-06

3.1335E-06

0.0000E+00

S8

1.3453E-06

1.3328E-05

4.7238E-06

0.0000E+00

S9

-8.5894E-06

-1.0154E-06

3.2704E-06

7.3371E-07

0.0000E+00

S10

-6.8288E-06

3.0503E-06

0.0000E+00

S11

1.5005E-04

-4.5352E-05

2.4438E-05

-2.4818E-05

7.1046E-05

-5.2162E-05

1.0408E-05

S12

-6.2654E-03

7.6543E-04

-1.9700E-03

-7.8938E-05

-4.6857E-04

6.3450E-05

-2.8821E-04

TABLE 8-2

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of the convergent focal points 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 optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens 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 optical imaging lens 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 optical imaging lens according to embodiment 4 can achieve good imaging quality.

Example 5

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

As shown in fig. 9, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a stop STO, 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 negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave 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 positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave 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. 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.

In this example, the total effective focal length f of the optical imaging lens is 1.15mm, the total length TTL of the optical imaging lens is 5.80mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.39mm, the half Semi-FOV of the maximum angle of view of the optical imaging lens is 81.0 °, and the aperture value Fno of the optical imaging lens is 1.85.

Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Tables 10-1, 10-2 show the 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 the formula (1) given in example 1 above.

TABLE 9

TABLE 10-1

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-1.2741E-03

5.8729E-04

-2.6750E-04

1.2287E-04

-4.9675E-05

1.2963E-05

-1.4633E-06

S2

1.6054E-03

1.0464E-03

6.6071E-04

3.6978E-04

1.9332E-04

8.0554E-05

3.8389E-05

S3

-4.7111E-06

2.4987E-06

-3.2868E-06

0.0000E+00

S4

1.0699E-05

1.8176E-06

0.0000E+00

S5

-1.6170E-06

-1.9102E-06

0.0000E+00

S6

3.1546E-05

1.2056E-05

0.0000E+00

S7

1.2863E-05

3.8987E-06

0.0000E+00

S8

3.8000E-05

2.5599E-05

7.3136E-06

0.0000E+00

S9

7.6066E-07

-4.0451E-06

3.2704E-06

7.3371E-07

0.0000E+00

S10

-1.1645E-05

5.7017E-06

0.0000E+00

S11

1.8724E-04

-3.7752E-05

2.7181E-05

-2.5787E-05

7.2322E-05

-5.2411E-05

1.0237E-05

S12

-8.3156E-03

2.7168E-03

-2.0947E-03

4.0385E-04

-4.2663E-04

8.1864E-05

-2.5877E-04

TABLE 10-2

Fig. 10A shows an on-axis chromatic aberration curve of the optical 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 an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens 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 optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a second lens E2, a third lens E3, a stop STO, 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 negative power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a concave 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 positive power, and has a convex object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex 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.

In this example, the total effective focal length f of the optical imaging lens is 1.23mm, the total length TTL of the optical imaging lens is 5.80mm, the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 2.39mm, the half Semi-FOV of the maximum angle of view of the optical imaging lens is 81.0 °, and the aperture value Fno of the optical imaging lens is 1.85.

Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Tables 12-1, 12-2 show the 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 the formula (1) given in example 1 above.

TABLE 11

TABLE 12-1

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-1.2805E-03

5.8636E-04

-2.6634E-04

1.2354E-04

-5.0015E-05

1.2841E-05

-1.4120E-06

S2

1.1068E-03

6.1501E-04

4.3069E-04

2.1065E-04

1.3680E-04

4.7743E-05

3.8737E-05

S3

-2.1642E-06

2.1014E-06

-5.2455E-07

0.0000E+00

S4

-6.4432E-06

-1.8728E-06

0.0000E+00

S5

-1.2313E-06

-2.3942E-06

0.0000E+00

S6

1.9642E-05

1.0227E-05

0.0000E+00

S7

6.2627E-07

-9.5629E-08

0.0000E+00

S8

-1.7683E-05

2.3439E-06

1.6299E-06

0.0000E+00

S9

-2.4952E-05

-6.1931E-06

3.2704E-06

7.3371E-07

0.0000E+00

S10

-1.2774E-05

4.8106E-06

0.0000E+00

S11

1.9930E-04

-4.7688E-06

2.0756E-05

-2.6456E-05

7.1110E-05

-5.2580E-05

1.0377E-05

S12

-3.9733E-03

6.3872E-04

-9.3841E-04

-4.3239E-05

-2.9147E-04

2.7806E-05

-3.0316E-04

TABLE 12-2

Fig. 12A shows an on-axis chromatic aberration curve of the optical 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 meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens 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 optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.

In summary, examples 1 to 6 each satisfy the relationship shown in table 13.

Watch 13

The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (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 optical imaging 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 appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. 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 optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

a first lens having an optical power;

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

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

a diaphragm;

a fourth lens having an optical power;

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

a sixth lens having a refractive power, an image-side surface of which is convex;

half of the Semi-FOV of the maximum field angle of the optical imaging lens satisfies: Semi-FOV is more than or equal to 70 degrees; and

the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens meet the following requirements: TTL/f is more than 3.5 and less than 5.1.

2. The optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens satisfy: -2.5 < f1/f4 < -1.5.

3. The optical imaging lens of claim 1, wherein the effective focal length f3 of the third lens and the effective focal length f5 of the fifth lens satisfy: -1.5 < f3/f5 < -2.5.

4. The optical imaging lens of claim 1, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R12 of the image-side surface of the sixth lens satisfy: 3.0 < R12/R3 < 4.5.

5. The optical imaging lens of claim 1, wherein the radius of curvature R4 of the image-side surface of the second lens and the radius of curvature R5 of the object-side surface of the third lens satisfy: 1.0 < | R5/R4| < 5.0.

6. The optical imaging lens of claim 1, wherein the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R7 of the object-side surface of the fourth lens satisfy: r6 is more than-2.0 and R7 is less than or equal to-1.0.

7. The optical imaging lens of claim 1, wherein 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 satisfy: -3.0 < R10/R9 < -1.0.

8. The optical imaging lens 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 optical imaging lens satisfy: -2.5 < R1/f < -1.0.

9. The optical imaging lens of claim 1, wherein a separation distance T12 between the first lens and the second lens on the optical axis and a center thickness CT1 of the first lens on the optical axis satisfy: T12/CT1 is more than 1.0 and less than 2.0.

10. The optical imaging lens of claim 1, wherein a separation distance T56 between the fifth lens and the sixth lens on the optical axis and a center thickness CT6 of the sixth lens on the optical axis satisfy: T56/CT6 is more than or equal to 1.0 and less than or equal to 3.5.

11. The optical imaging lens of claim 1, wherein a center thickness CT2 of 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: 2.5 < CT2/T23 < 4.5.

12. The optical imaging lens according to any one of claims 1 to 11, wherein the half ImgH of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy: 1.5 < ImgH/f < 2.1.

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

a first lens having an optical power;

a diaphragm;

a fourth lens having an optical power;

a separation distance T56 between the fifth lens and the sixth lens on the optical axis and a center thickness CT6 of the sixth lens on the optical axis satisfy: T56/CT6 is more than or equal to 1.0 and less than or equal to 3.5.

14. The optical imaging lens of claim 13, wherein the effective focal length f1 of the first lens and the effective focal length f4 of the fourth lens satisfy: -2.5 < f1/f4 < -1.5.

15. The optical imaging lens of claim 13, wherein the effective focal length f3 of the third lens and the effective focal length f5 of the fifth lens satisfy: -1.5 < f3/f5 < -2.5.

16. The optical imaging lens of claim 13, wherein the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R12 of the image-side surface of the sixth lens satisfy: 3.0 < R12/R3 < 4.5.

17. The optical imaging lens of claim 13, wherein the radius of curvature R4 of the image-side surface of the second lens and the radius of curvature R5 of the object-side surface of the third lens satisfy: 1.0 < | R5/R4| < 5.0.

18. The optical imaging lens of claim 13, wherein the radius of curvature R6 of the image-side surface of the third lens and the radius of curvature R7 of the object-side surface of the fourth lens satisfy: r6 is more than-2.0 and R7 is less than or equal to-1.0.

19. The optical imaging lens of claim 13, wherein 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 satisfy: -3.0 < R10/R9 < -1.0.

20. The optical imaging lens of claim 13, wherein the radius of curvature R1 of the object side surface of the first lens and the total effective focal length f of the optical imaging lens satisfy: -2.5 < R1/f < -1.0.

21. The optical imaging lens of claim 13, wherein the separation distance T12 between the first lens and the second lens on the optical axis and the central thickness CT1 of the first lens on the optical axis satisfy: T12/CT1 is more than 1.0 and less than 2.0.

22. The optical imaging lens of claim 13, wherein the central thickness CT2 of the second lens on the optical axis is separated from the second and third lenses on the optical axis by a distance T23 that satisfies: 2.5 < CT2/T23 < 4.5.

23. The optical imaging lens according to any one of claims 13 to 22, wherein the half ImgH of the diagonal length of the effective pixel area on the imaging plane of the optical imaging lens and the total effective focal length f of the optical imaging lens satisfy: 1.5 < ImgH/f < 2.1.

24. The optical imaging lens of any one of claims 14 to 22, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a total effective focal length f of the optical imaging lens satisfy: TTL/f is more than 3.5 and less than 5.1.