CN114114656B

CN114114656B - Optical imaging lens

Info

Publication number: CN114114656B
Application number: CN202111511773.2A
Authority: CN
Inventors: 李明; 杨健; 贺凌波
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2017-07-31
Filing date: 2017-07-31
Publication date: 2023-09-15
Anticipated expiration: 2037-07-31
Also published as: CN107219613A; CN107219613B; CN114114656A

Abstract

The application discloses an optical imaging lens, which sequentially comprises the following components from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens has positive optical power; the second lens, the third lens and the sixth lens all have negative focal power; at least one of the fourth lens and the fifth lens has positive optical power; the object side surface of the first lens and the image side surface of the fourth lens are convex; the image side surface of the second lens and the image side surface of the sixth lens are concave surfaces; and the distance TTL from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH less than or equal to 1.7.

Description

Optical imaging lens

Filing and applying for separate cases

The application is a divisional application of China patent application with the application number 201710640672.2, and the name of the patent application is an optical imaging lens submitted by 2017, 07 and 31 days.

Technical Field

The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including six lenses.

Background

In recent years, with the development of science and technology, portable electronic products are gradually rising, and portable electronic products with a camera function are more favored by people, so that the market demand for a camera lens suitable for the portable electronic products is gradually increasing. Because portable electronic products tend to be miniaturized, the total length of the lens is limited, and the design difficulty of the lens is increased.

Meanwhile, with the improvement of the performance and the reduction of the size of common photosensitive elements such as a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS), the number of pixels of the photosensitive element is increased and the size of the pixels is reduced, so that higher requirements are put on the high imaging quality and the miniaturization of the matched optical imaging lens.

The f-number Fno (total effective focal length of lens/entrance pupil diameter of lens) of the conventional lens is 2.0 or more, and although the lens can meet the miniaturization requirement, the imaging quality of the lens cannot be ensured under the conditions of insufficient light (such as overcast and rainy days, dusk, etc.), hand tremble, etc., so that the lens with the f-number Fno of 2.0 or more cannot meet the higher-order imaging requirement.

Disclosure of Invention

The present application provides an optical imaging lens applicable to portable electronic products, which at least solves or partially solves at least one of the above-mentioned drawbacks of the prior art.

An aspect of the present application provides an optical imaging lens including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens. The first lens may have positive optical power; the second lens, the third lens, and the sixth lens may each have negative optical power; at least one of the fourth lens and the fifth lens may have positive optical power; the object side surface of the first lens element and the image side surface of the fourth lens element may be convex; the image side surface of the second lens element and the image side surface of the sixth lens element may each be concave; and the distance TTL from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can meet the requirement that TTL/ImgH is less than or equal to 1.7.

In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy f/EPD.ltoreq.1.8.

In one embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens may satisfy-1 < f1/f2 < 0.

In one embodiment, the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens may satisfy 1 < f/f1 < 1.5.

In one embodiment, the central thickness CT1 of the first lens on the optical axis and the central thickness CT2 of the second lens on the optical axis can satisfy 2.0 < CT1/CT2 < 3.5.

In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R12 of the image side surface of the sixth lens may satisfy 2.5 < f/R12 < 4.0.

In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens can satisfy 2.ltoreq.f/R1 < 2.5.

In one embodiment, the fourth lens may have positive power, and its effective focal length f4 and the total effective focal length f of the optical imaging lens may satisfy 0.7 < f4/f < 1.2.

In one embodiment, the first lens 'Abbe's number V1 and the second lens 'Abbe's number V2 may satisfy 2.0 < V1/V2 < 4.0.

In one embodiment, the angle of incidence β62 of the upper ray of the maximum field of view on the image side of the sixth lens may satisfy 7 ° < β62 < 12 °.

In one embodiment, the total effective focal length f of the optical imaging lens and the radius of curvature R9 of the object side surface of the fifth lens can satisfy f/|r9|+.0.35.

The application adopts six lenses, and reasonably distributes the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like, so that the system has the advantage of large aperture in the process of increasing the light quantity, thereby improving the marginal ray aberration and enhancing the imaging effect in dark environment. Meanwhile, the optical imaging lens configured as described above can have at least one advantageous effect of miniaturization, large aperture, high imaging quality, low sensitivity, 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, taken in conjunction with the accompanying drawings. In the drawings:

fig. 1 shows a schematic configuration diagram 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 astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;

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

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

Fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;

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

fig. 7 shows a schematic configuration diagram of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;

fig. 9 shows a schematic configuration diagram of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;

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

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

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

fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 7;

Fig. 15 shows a schematic structural view of an optical imaging lens according to embodiment 8 of the present application;

fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 8;

fig. 17 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 9 of the present application;

fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 9;

fig. 19 schematically shows the angle of incidence beta 62 of the upper ray of the maximum field of view on the image side of the sixth lens.

Detailed Description

For a better understanding of the application, various aspects of the 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 application and is not intended to limit the scope of the 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 the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are 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, then 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 referred to as the object side surface, and the surface of each lens closest to the imaging surface is referred to as the image side surface.

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," 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. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the 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, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

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

The optical imaging lens according to the exemplary embodiment of the present application includes, for example, six lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The optical imaging lens may further include a photosensitive element disposed on the imaging surface.

The first lens may have positive optical power, and an object side surface thereof may be convex; the second lens may have negative optical power, and an image side surface thereof may be concave; the third lens has positive optical power or negative optical power; the fourth lens has positive focal power or negative focal power, and the image side surface of the fourth lens is a convex surface; the fifth lens has positive optical power or negative optical power; and the sixth lens has negative focal power, and the image side surface of the sixth lens is concave.

In one embodiment, the third lens may have negative optical power. The third lens has negative focal power, which is beneficial to reducing the sensitivity of the system.

In one embodiment, the object-side surface of the fifth lens element may be concave, and the image-side surface may be convex. The fifth lens is arranged in a meniscus shape protruding toward the image side, which helps to reduce the astigmatism of the system and matches the chip chief ray angle CRA.

The total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens can satisfy 1 < f/f1 < 1.5, more specifically, f and f1 can further satisfy 1.05.ltoreq.f1.ltoreq.1.34. The focal power of the first lens is reasonably distributed, so that the imaging lens has better field curvature balancing capability.

The effective focal length f4 of the fourth lens and the total effective focal length f of the optical imaging lens can satisfy 0.7 < f4/f < 1.2, and more specifically, f4 and f can further satisfy 0.84.ltoreq.f4/f.ltoreq.1.04. The optical power of the fourth lens is reasonably distributed, so that the imaging lens has better astigmatic capacity.

The effective focal length f1 of the first lens and the effective focal length f2 of the second lens may satisfy-1 < f1/f2 < 0, more specifically, f1 and f2 may further satisfy-0.57.ltoreq.f1/f 2.ltoreq.0.32. By reasonably distributing the optical power of the first lens and the second lens, the light deflection angle can be reduced, and the sensitivity of the system can be reduced.

The center thickness CT1 of the first lens on the optical axis and the center thickness CT2 of the second lens on the optical axis can satisfy that CT1/CT2 is smaller than 2.0 and smaller than 3.5, more specifically, CT1 and CT2 can further satisfy that CT1/CT2 is smaller than or equal to 2.27 and smaller than or equal to 3.41. By reasonably arranging the center thicknesses of the first lens and the second lens, the lens has better aberration balancing capability.

The total effective focal length f of the optical imaging lens and the curvature radius R1 of the object side surface of the first lens can meet that f/R1 is less than or equal to 2.5, and more particularly, f and R1 can further meet that f/R1 is less than or equal to 2.03 and less than or equal to 2.34. The curvature radius of the object side surface of the first lens is reasonably arranged, so that the aberration of the system can be effectively balanced, and the imaging quality of the lens is improved.

The total effective focal length f of the optical imaging lens and the curvature radius R9 of the object side surface of the fifth lens can meet f/|R9|less than or equal to 0.35, and more specifically, f and R9 can further meet f/|R9|less than or equal to 0.27. The total effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface of the fifth lens can meet f/|R10|less than or equal to 0.5, and more specifically, f and R10 can further meet f/|R10|less than or equal to 0.08 and less than or equal to 0.42.

The total effective focal length f of the optical imaging lens and the curvature radius R12 of the image side surface of the sixth lens can satisfy 2.5 < f/R12 < 4.0, more specifically, f and R12 can further satisfy 2.93 < f/R12 < 3.79. The curvature radius of the sixth lens is reasonably arranged, so that the lens can be well matched with a common chip.

The incident angle β62 (see fig. 19) of the upper ray of the maximum field of view on the image side surface of the sixth lens may satisfy 7 ° < β62 < 12 °, more specifically, β62 may further satisfy 8.3 ° - β62 +.11 °. By controlling beta 62 within a reasonable range, the ghost image state of the system can be effectively reduced to an acceptable range.

The dispersion coefficient V1 of the first lens and the dispersion coefficient V2 of the second lens can satisfy 2.0 < V1/V2 < 4.0, more specifically, V1 and V2 can further satisfy 2.23.ltoreq.V1/V2.ltoreq.3.14. The materials of the first lens and the second lens are reasonably selected, so that the imaging lens has better color difference balancing capability.

The total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy f/EPD less than or equal to 1.8, more specifically, f and EPD can further satisfy f/EPD less than or equal to 1.68 less than or equal to 1.78. The smaller the f-number Fno of the optical imaging lens (i.e., the total effective focal length f of the lens/the entrance pupil diameter EPD of the lens), the larger the clear aperture of the lens, the more the amount of light entering in the same unit time. The f-number FNo is reduced, so that the image surface brightness can be effectively improved, and the camera lens can better meet the shooting requirement when the light is insufficient. The lens is configured to meet the condition that f/EPD is less than or equal to 1.8, so that the lens has the advantage of large aperture in the process of increasing the light quantity, and the imaging effect in dark environment is enhanced while the marginal ray aberration is improved.

The total optical length TTL of the optical imaging lens (i.e., the distance on the axis from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens) and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens may satisfy TTL/ImgH less than or equal to 1.7, and more specifically, TTL and ImgH may further satisfy 1.56 less than or equal to TTL/ImgH less than or equal to 1.64. By controlling the total optical length and the image height ratio of the lens, the total size of the imaging lens can be effectively compressed to realize the ultra-thin characteristic and miniaturization of the imaging lens, so that the imaging lens can be well applied to systems with limited sizes such as portable electronic products.

In an exemplary embodiment, the optical imaging lens may further be provided with at least one diaphragm to improve the imaging quality of the lens. It will be appreciated by those skilled in the art that the diaphragm may be arranged at any position between the object side and the image side as desired, i.e. the diaphragm arrangement should not be limited to the positions described in the embodiments below.

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

The optical imaging lens according to the above 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 shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, the sensitivity of the lens can be effectively reduced, the processability of the lens can be improved, and the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. Meanwhile, the optical imaging lens with the configuration has the beneficial effects of ultrathin large aperture, high imaging quality and the like.

In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror. The aspherical 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 a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. In addition, the use of aspherical lenses can also effectively reduce the number of lenses in the optical system.

However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although six lenses are described as an example in the embodiment, the optical imaging lens is not limited to include six lenses. The optical imaging lens may also include other numbers of lenses, if desired.

Specific examples of the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying 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 configuration 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 imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, an image-side surface S2 thereof is concave, and both the object-side surface S1 and the image-side surface S2 of the first lens element E1 are aspheric.

The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, an image-side surface S4 thereof is concave, and both the object-side surface S3 and the image-side surface S4 of the second lens element E2 are aspheric.

The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, an image-side surface S6 thereof is convex, and both the object-side surface S5 and the image-side surface S6 of the third lens element E3 are aspheric.

The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave, an image-side surface S8 thereof is convex, and both the object-side surface S7 and the image-side surface S8 of the fourth lens element E4 are aspheric.

The fifth lens element E5 has positive refractive power, wherein the object-side surface S9 thereof is concave, the image-side surface S10 thereof is convex, and both the object-side surface S9 and the image-side surface S10 of the fifth lens element E5 are aspheric.

The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex, an image-side surface S12 thereof is concave, and both the object-side surface S11 and the image-side surface S12 of the sixth lens element E6 are aspheric.

Optionally, the optical imaging lens may further include a filter E7 having an object side surface S13 and an image side surface S14. Light from the object sequentially passes through the respective surfaces S1 to S14 and is finally imaged on the imaging surface S15.

Optionally, a stop STO for limiting the light beam may be disposed between the object side and the first lens E1 to enhance the imaging quality of the optical imaging lens.

Table 1 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 1, in which the units of the radii of curvature and the thicknesses are millimeters (mm).

TABLE 1

As can be obtained from table 1, CT 1/ct2=3.09 is satisfied between the center thickness CT1 of the first lens element E1 on the optical axis and the center thickness CT2 of the second lens element E2 on the optical axis; v1/v2=3.14 is satisfied between the dispersion coefficient V1 of the first lens E1 and the dispersion coefficient V2 of the second lens E2.

In this embodiment, five lenses are taken as an example, and by reasonably distributing the focal length of each lens, the surface of each lens, the center thickness of each lens and the spacing distance between each lens, the lens light flux is increased and the imaging quality of the lens is improved while the miniaturization of the lens is realized. Each lens may be an aspherical lens, and each aspherical surface profile x is defined by the following formula:

wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirror surfaces S1-S8 in example 1 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ And A ₁₆ 。

TABLE 2

Table 3 below gives the effective focal lengths f1 to f6 of the respective lenses in embodiment 1, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens E1 to the imaging surface S15), and half the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

TABLE 3 Table 3

As can be taken from table 3, the effective focal length f1 of the first lens E1 and the effective focal length f2 of the second lens E2 satisfy f1/f2= -0.32; the effective focal length f1 of the first lens E1 and the total effective focal length f of the optical imaging lens satisfy f1=1.07; the effective focal length f4 of the fourth lens E4 and the total effective focal length f of the optical imaging lens satisfy f4/f=0.91; the total optical length TTL of the optical imaging lens and half the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens satisfy TTL/imgh=1.56. As can be obtained by combining table 1 and table 3, f/r1=2.30 is satisfied between the total effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface S1 of the first lens E1; the total effective focal length f of the optical imaging lens and the curvature radius R9 of the object side surface S9 of the fifth lens E5 meet f/|R9|=0.11; the total effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface S10 of the fifth lens E5 meet f/|R10|=0.24; the total effective focal length f of the optical imaging lens and the radius of curvature R12 of the image-side surface S12 of the sixth lens E6 satisfy fr12=3.21.

In embodiment 1, f/epd=1.68 is satisfied between the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens; the angle of incidence β62=10.7° of the upper ray of the maximum field of view on the image side of the sixth lens.

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values at different angles of view. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the 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 provided in 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 portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration 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 imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The third lens element E3 has negative refractive power, wherein the object-side surface S5 is concave, the image-side surface S6 is concave, and both the object-side surface S5 and the image-side surface S6 of the third lens element E3 are aspheric.

Table 4 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 2, in which the units of the radii of curvature and the thicknesses are millimeters (mm). Table 5 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above. Table 6 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 2, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

TABLE 4 Table 4

Face number

A4

A6

A8

A10

A12

A14

A16

S1

6.2687E-02

8.6605E-03

-4.5636E-02

7.4360E-02

-7.1432E-02

3.4569E-02

-7.7543E-03

S2

-9.3123E-02

7.8171E-02

8.3047E-02

-3.0703E-01

3.4659E-01

-1.8953E-01

4.0751E-02

S3

-1.5378E-01

2.3354E-01

7.0522E-02

-4.4852E-01

5.2903E-01

-2.7278E-01

5.2708E-02

S4

3.3410E-02

2.6340E-02

4.4699E-01

-1.1914E+00

1.7019E+00

-1.2890E+00

4.5150E-01

S5

-1.1041E-01

-1.2281E-01

5.8468E-01

-1.6380E+00

2.5744E+00

-2.1534E+00

7.6605E-01

S6

-8.2993E-02

-6.2310E-02

9.2223E-02

-1.6090E-01

1.7545E-01

-9.5870E-02

2.2427E-02

S7

4.2345E-02

4.0006E-03

-4.0589E-02

-8.9978E-03

2.8162E-02

-1.5030E-02

2.7516E-03

S8

-6.5886E-02

1.5441E-01

-1.8932E-01

1.3690E-01

-5.6653E-02

1.2038E-02

-1.0182E-03

S9

1.3203E-01

-2.7606E-01

1.2589E-01

-3.5591E-03

-1.3014E-02

3.8295E-03

-3.5125E-04

S10

2.3162E-01

-4.3738E-01

3.0172E-01

-1.1504E-01

2.5883E-02

-3.1933E-03

1.6550E-04

S11

-2.1677E-01

1.7989E-02

6.6332E-02

-3.6138E-02

8.4840E-03

-9.7009E-04

4.4156E-05

S12

-2.1120E-01

1.4160E-01

-5.7738E-02

1.4432E-02

-2.2087E-03

1.8958E-04

-6.9285E-06

TABLE 5

TABLE 6

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values at different angles of view. Fig. 4D shows a magnification chromatic aberration 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 provided in 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 configuration 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 imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, an image-side surface S2 thereof is convex, and both the object-side surface S1 and the image-side surface S2 of the first lens element E1 are aspheric.

The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, an image-side surface S10 thereof is convex, and both the object-side surface S9 and the image-side surface S10 of the fifth lens element E5 are aspheric.

Table 7 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm). Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above. Table 9 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 3, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

TABLE 7

Face number

A4

A6

A8

A10

A12

A14

A16

S1

5.7398E-02

3.7527E-02

-1.5996E-01

2.5988E-01

-2.4032E-01

1.1312E-01

-2.1899E-02

S2

-1.1782E-01

3.4423E-01

-5.8428E-01

5.6357E-01

-3.2591E-01

1.0928E-01

-1.8318E-02

S3

-1.6921E-01

6.3560E-01

-1.1440E+00

1.3546E+00

-1.0119E+00

4.6845E-01

-1.0376E-01

S4

1.6396E-02

2.1256E-01

-3.0961E-01

5.9850E-03

7.5499E-01

-1.0248E+00

4.8868E-01

S5

-1.1151E-01

-1.3488E-01

7.0287E-01

-2.0639E+00

3.2877E+00

-2.7606E+00

9.9463E-01

S6

-8.6368E-02

1.6281E-02

-1.5233E-01

2.2379E-01

-1.5686E-01

5.5324E-02

-4.4032E-03

S7

4.1490E-02

5.8795E-02

-1.4831E-01

7.1990E-02

1.2901E-03

-1.5000E-02

4.2654E-03

S8

-5.4914E-02

1.4260E-01

-1.7289E-01

1.2654E-01

-5.4654E-02

1.2391E-02

-1.1399E-03

S9

1.3587E-01

-3.2540E-01

1.8288E-01

-3.8520E-02

-9.5312E-05

1.2107E-03

-1.3247E-04

S10

2.4095E-01

-4.5694E-01

3.2287E-01

-1.2950E-01

3.1508E-02

-4.2899E-03

2.4835E-04

S11

-1.9726E-01

1.5906E-02

5.6164E-02

-2.9409E-02

6.6491E-03

-7.3602E-04

3.2644E-05

S12

-1.8024E-01

1.1157E-01

-4.2038E-02

9.4157E-03

-1.2629E-03

9.3904E-05

-2.9232E-06

TABLE 8

TABLE 9

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values at different angles of view. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the 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 provided in 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 configuration 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 imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, an image-side surface S6 thereof is concave, and both the object-side surface S5 and the image-side surface S6 of the third lens element E3 are aspheric.

The fifth lens element E5 has negative refractive power, wherein the object-side surface S9 thereof is concave, the image-side surface S10 thereof is concave, and both the object-side surface S9 and the image-side surface S10 of the fifth lens element E5 are aspheric.

Table 10 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 4, in which the units of the radii of curvature and the thicknesses are millimeters (mm). Table 11 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above. Table 12 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 4, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

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Table 10

Face number

A4

A6

A8

A10

A12

A14

A16

S1

6.1230E-02

9.6914E-03

-5.1005E-02

7.8296E-02

-7.1415E-02

3.3084E-02

-6.9589E-03

S2

-1.2414E-01

1.6440E-01

-3.9313E-02

-1.9603E-01

2.7475E-01

-1.5843E-01

3.4275E-02

S3

-1.8033E-01

3.5444E-01

-1.2398E-01

-3.0374E-01

4.9972E-01

-2.9791E-01

6.3553E-02

S4

2.1451E-02

1.5404E-01

-1.5537E-02

-1.1853E-01

1.0508E-01

5.1356E-02

-2.8879E-02

S5

-1.2527E-01

-9.9046E-04

7.5964E-03

-1.0241E-01

2.8890E-01

-3.6913E-01

1.9943E-01

S6

-8.5292E-02

-3.2348E-02

8.2299E-03

-4.9017E-02

8.9898E-02

-6.4413E-02

1.9961E-02

S7

2.6421E-02

1.9031E-02

-5.9176E-02

-8.5956E-03

3.6390E-02

-2.1129E-02

4.3941E-03

S8

-6.4075E-02

1.3629E-01

-1.5878E-01

9.8196E-02

-3.1266E-02

4.2273E-03

-1.0927E-04

S9

9.8044E-02

-1.8956E-01

3.7191E-02

4.3633E-02

-2.6347E-02

5.6607E-03

-4.4081E-04

S10

1.8839E-01

-3.4407E-01

2.1472E-01

-7.4134E-02

1.5413E-02

-1.7953E-03

8.9108E-05

S11

-1.7275E-01

1.0926E-02

4.5365E-02

-2.2304E-02

4.7859E-03

-5.0298E-04

2.1086E-05

S12

-1.8744E-01

1.1148E-01

-3.9727E-02

8.4697E-03

-1.0740E-03

7.4205E-05

-2.1123E-06

TABLE 11

Table 12

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values at different angles of view. Fig. 8D shows a magnification chromatic aberration 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 provided in 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 configuration 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 imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The fifth lens element E5 has negative refractive power, wherein the object-side surface S9 thereof is concave, the image-side surface S10 thereof is convex, and both the object-side surface S9 and the image-side surface S10 of the fifth lens element E5 are aspheric.

Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm). Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above. Table 15 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 5, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

TABLE 13

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TABLE 14

TABLE 15

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values at different angles of view. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in 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 diagram 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 imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, an image-side surface S8 thereof is convex, and both the object-side surface S7 and the image-side surface S8 of the fourth lens element E4 are aspheric.

Table 16 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 6, in which the units of the radii of curvature and the thicknesses are millimeters (mm). Table 17 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above. Table 18 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 6, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

Table 16

Face number

A4

A6

A8

A10

A12

A14

A16

S1

6.1804E-02

3.4033E-03

-3.4696E-02

5.8950E-02

-6.0090E-02

3.0669E-02

-7.2163E-03

S2

-1.0144E-01

1.0806E-01

1.4464E-02

-2.0290E-01

2.4999E-01

-1.4087E-01

3.0573E-02

S3

-1.6119E-01

2.5986E-01

2.7605E-02

-3.7524E-01

4.3038E-01

-2.0243E-01

3.2002E-02

S4

3.1557E-02

5.7324E-02

2.7530E-01

-6.2792E-01

7.1338E-01

-4.1032E-01

1.3174E-01

S5

-1.1395E-01

-1.6726E-01

8.0150E-01

-2.1428E+00

3.2208E+00

-2.5841E+00

8.8092E-01

S6

-9.8597E-02

-6.1531E-02

1.1663E-01

-2.0560E-01

2.1471E-01

-1.1364E-01

2.5674E-02

S7

2.3282E-02

1.6671E-02

-4.8096E-02

6.1130E-03

1.2506E-02

-8.0734E-03

1.6092E-03

S8

-5.7454E-02

1.1753E-01

-1.2888E-01

8.9872E-02

-3.7302E-02

7.9728E-03

-6.7447E-04

S9

1.2721E-01

-2.8510E-01

1.4365E-01

-1.4727E-02

-9.6776E-03

3.3687E-03

-3.2997E-04

S10

2.4459E-01

-4.6426E-01

3.2676E-01

-1.2764E-01

2.9345E-02

-3.6789E-03

1.9267E-04

S11

-2.1334E-01

1.8068E-02

6.4621E-02

-3.4958E-02

8.1245E-03

-9.1807E-04

4.1233E-05

S12

-2.0793E-01

1.4170E-01

-5.8523E-02

1.4868E-02

-2.3286E-03

2.0683E-04

-7.9281E-06

TABLE 17

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TABLE 18

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

Example 7

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

As shown in fig. 13, the optical imaging lens includes, in order from an object side to an imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave, an image-side surface S12 thereof is concave, and both the object-side surface S11 and the image-side surface S12 of the sixth lens element E6 are aspheric.

Table 19 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 7, in which the units of the radii of curvature and the thicknesses are millimeters (mm). Table 20 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above. Table 21 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 7, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

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TABLE 19

Face number

A4

A6

A8

A10

A12

A14

A16

S1

6.2257E-02

3.6433E-03

-3.9207E-02

6.9202E-02

-7.3175E-02

3.8996E-02

-9.2270E-03

S2

-1.0431E-01

1.1914E-01

-1.3488E-02

-1.6137E-01

2.0591E-01

-1.1034E-01

2.0751E-02

S3

-1.6347E-01

2.7819E-01

2.6546E-02

-4.8052E-01

6.3644E-01

-3.5393E-01

6.9858E-02

S4

2.5237E-02

1.0710E-01

1.1674E-01

-2.7619E-01

1.6406E-01

1.0455E-01

-6.4258E-02

S5

-1.2760E-01

-5.8859E-02

2.9238E-01

-9.1038E-01

1.5633E+00

-1.4408E+00

5.7858E-01

S6

-9.4480E-02

-5.0371E-02

7.1558E-02

-1.5425E-01

1.8931E-01

-1.1365E-01

2.9446E-02

S7

2.2644E-02

2.4000E-02

-8.1542E-02

4.1214E-02

-8.0245E-03

-1.7695E-03

9.7316E-04

S8

-6.2578E-02

1.0086E-01

-1.0981E-01

8.0821E-02

-3.5143E-02

7.7808E-03

-6.7647E-04

S9

1.1317E-01

-2.7333E-01

1.3529E-01

-8.5639E-03

-1.3075E-02

4.3429E-03

-4.3552E-04

S10

2.2782E-01

-4.2278E-01

2.9386E-01

-1.1618E-01

2.7665E-02

-3.6397E-03

2.0109E-04

S11

-1.6616E-01

2.9247E-02

3.1934E-02

-1.8220E-02

4.1856E-03

-4.6540E-04

2.0608E-05

S12

-1.7230E-01

1.1619E-01

-4.9305E-02

1.3031E-02

-2.1544E-03

2.0398E-04

-8.3380E-06

Table 20

Table 21

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

Example 8

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

As shown in fig. 15, the optical imaging lens includes, in order from an object side to an imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

Table 22 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 8, in which the units of the radii of curvature and the thicknesses are millimeters (mm). Table 23 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above. Table 24 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 8, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

Table 22

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Table 23

Table 24

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

Example 9

An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 shows a schematic configuration diagram of an optical imaging lens according to embodiment 9 of the present application.

As shown in fig. 17, the optical imaging lens includes, in order from an object side to an imaging side along an optical axis, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, and an imaging surface S15. The optical imaging lens may further include a photosensitive element disposed on the imaging surface S15.

The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, an image-side surface S6 thereof is convex, and both the object-side surface S5 and the image-side surface S6 of the third lens element E3 are aspheric.

Table 25 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 9, in which the units of the radii of curvature and the thicknesses are millimeters (mm). Table 26 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above. Table 27 shows effective focal lengths f1 to f6 of the respective lenses in embodiment 9, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel region on the imaging surface S15 of the optical imaging lens.

Table 25

Face number

A4

A6

A8

A10

A12

A14

A16

S1

5.4661E-02

2.0126E-02

-1.0234E-01

1.9923E-01

-2.1979E-01

1.2442E-01

-2.9404E-02

S2

-1.1236E-01

1.8584E-01

-1.3845E-01

-2.3930E-02

1.2707E-01

-9.0198E-02

1.9613E-02

S3

-1.9766E-01

4.4557E-01

-3.4579E-01

-9.2077E-02

4.5219E-01

-3.5421E-01

9.1892E-02

S4

3.3993E-02

1.7743E-01

-1.7989E-01

1.8027E-01

-2.6894E-01

3.4322E-01

-1.5499E-01

S5

-1.0733E-01

7.4068E-02

-4.0322E-01

1.0092E+00

-1.3669E+00

9.4378E-01

-2.4627E-01

S6

-6.2493E-02

-6.9770E-02

1.5363E-01

-2.9558E-01

3.2357E-01

-1.8233E-01

4.3273E-02

S7

2.8019E-02

6.2693E-03

-4.8186E-02

3.5442E-02

-1.5537E-02

3.2405E-03

-1.7281E-04

S8

-4.5520E-02

7.2976E-02

-9.4583E-02

8.1151E-02

-3.7846E-02

8.7795E-03

-8.0679E-04

S9

1.3842E-01

-2.6811E-01

1.5291E-01

-4.4325E-02

7.5135E-03

-7.1773E-04

2.7922E-05

S10

1.9802E-01

-3.5615E-01

2.2605E-01

-7.7140E-02

1.5180E-02

-1.6042E-03

6.9694E-05

S11

-1.9383E-01

1.5184E-02

5.2852E-02

-2.7222E-02

6.0493E-03

-6.5550E-04

2.8332E-05

S12

-1.8885E-01

1.2297E-01

-4.8187E-02

1.1149E-02

-1.5087E-03

1.0826E-04

-3.0459E-06

Table 26

Table 27

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

In summary, examples 1 to 9 each satisfy the relationship shown in table 28 below.

Conditional\embodiment	1	2	3	4	5	6	7	8	9
										f/EPD	1.68	1.68	1.70	1.69	1.70	1.69	1.78	1.69	1.68
f/\|R9\|	0.11	0.07	0.10	0.00	0.27	0.15	0.16	0.27	0.13
										f/\|R10\|	0.24	0.18	0.15	0.08	0.26	0.28	0.42	0.39	0.20
TTL/ImgH	1.56	1.56	1.56	1.56	1.56	1.56	1.56	1.56	1.64
										f1/f2	-0.32	-0.32	-0.50	-0.37	-0.32	-0.33	-0.36	-0.33	-0.57
f/f1	1.07	1.06	1.34	1.11	1.08	1.05	1.10	1.08	1.16
										CT1/CT2	3.09	2.98	3.40	3.24	3.38	2.96	3.13	3.41	2.27
f/R12	3.21	3.25	2.93	3.09	3.14	3.13	2.93	3.15	3.79
										f/R1	2.30	2.31	2.14	2.30	2.31	2.31	2.34	2.31	2.03
f4/f	0.91	0.92	1.04	0.94	0.84	0.86	0.85	0.87	1.03
										V1/V2	3.14	3.14	3.14	2.96	3.14	3.14	3.14	3.11	2.23
β62(°)	10.7	10.5	10.3	10.4	11.0	9.0	8.3	9.8	10.4

Table 28

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

The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims

1. The optical imaging lens sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, characterized in that,

the first lens has positive optical power;

the second lens, the third lens and the sixth lens all have negative optical power;

the fourth lens has positive focal power;

the object side surface of the first lens and the image side surface of the fourth lens are convex;

the image side surface of the second lens and the image side surface of the sixth lens are concave surfaces; and

The number of lenses of the optical imaging lens with focal power is six;

the distance TTL from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and half of the diagonal line length of the effective pixel area on the imaging surface of the optical imaging lens can satisfy TTL/ImgH less than or equal to 1.7,

the total effective focal length f of the optical imaging lens and the curvature radius R1 of the object side surface of the first lens satisfy the requirement that f/R1 is less than or equal to 2.03 and less than or equal to 2.34, and

and the total effective focal length f of the optical imaging lens and the curvature radius R9 of the object side surface of the fifth lens meet the f/|R9| which is less than or equal to 0.35.

2. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD +.1.8.

3. The optical imaging lens of claim 1, wherein an effective focal length f1 of the first lens and an effective focal length f2 of the second lens satisfy-1 < f1/f2 < 0.

4. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens satisfy 1 < f/f1 < 1.5.

5. The optical imaging lens as claimed in claim 1, wherein a center thickness CT1 of the first lens on the optical axis and a center thickness CT2 of the second lens on the optical axis satisfy 2.0 < CT1/CT2 < 3.5.

6. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R12 of the sixth lens image side satisfy 2.5 < f/R12 < 4.0.

7. The optical imaging lens of claim 1, wherein the fourth lens has positive optical power, and an effective focal length f4 and a total effective focal length f of the optical imaging lens satisfy 0.7 < f4/f < 1.2.

8. The optical imaging lens of claim 1, wherein an abbe number V1 of the first lens and an abbe number V2 of the second lens satisfy 2.0 < V1/V2 < 4.0.

9. The optical imaging lens of claim 1, wherein an angle of incidence β62 of an upper ray of a maximum field of view on an image side of the sixth lens satisfies 7 ° < β62 < 12 °.