CN115327750A

CN115327750A - Optical imaging lens

Info

Publication number: CN115327750A
Application number: CN202211122767.2A
Authority: CN
Inventors: 朱晓晓; 徐武超; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2022-09-15
Filing date: 2022-09-15
Publication date: 2022-11-11

Abstract

The application discloses an optical imaging lens, which sequentially comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens from an object side to an image side along an optical axis, wherein the first lens has negative focal power, and the object side surface of the first lens is a concave surface; the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; the fourth lens has a negative optical power; the fifth lens has positive focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, wherein the optical imaging lens satisfies: 120 ° < FOV <130 °; and 0.5< -f 3/(R5 + R6) <5.5, wherein FOV is the maximum field angle of the optical imaging lens, f3 is the effective focal length of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and R6 is the curvature radius of the image-side surface of the third lens.

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 technology changing day by day, image sensor technologies such as CCD and CMOS are also continuously developed, so that a trend is formed in which the number of pixels of a chip is gradually increased and the size of a single pixel is gradually reduced. However, as image sensing technology has been developed, the requirements of people on the imaging performance of optical systems have become higher and higher, and the systems are required to have performance such as an ultra-wide angle, lightness and thinness, and the like, as well as clear imaging of a subject. In addition, balancing of the optical aberrations of the system is also one of the performance improvements that is constantly being pursued. Therefore, how to obtain an imaging lens meeting the user requirements has become an urgent problem to be solved.

Disclosure of Invention

An aspect of the present disclosure provides an optical imaging lens, which includes, in order from an object side to an image side along an optical axis, a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element, where the first lens element has a negative refractive power and an object-side surface thereof is a concave surface; the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; the fourth lens has a negative focal power; the fifth lens has positive focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, wherein the optical imaging lens satisfies: 120 ° < FOV <130 °; and 0.5< -f 3/(R5 + R6) <5.5, wherein FOV is the maximum field angle of the optical imaging lens, f3 is the effective focal length of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and R6 is the curvature radius of the image-side surface of the third lens.

In one embodiment, at least one mirror surface of the object side surface of the first lens to the image side surface of the sixth lens is an aspherical mirror surface.

In one embodiment, the optical imaging lens satisfies: 1.4< -f 1/R1<2.6, wherein f1 is the effective focal length of the first lens, and R1 is the curvature radius of the object side surface of the first lens.

In one embodiment, the optical imaging lens satisfies: 1.8< (f 5-f 4)/(R8 + R10) <4.4, wherein f5 is an effective focal length of the fifth lens, f4 is an effective focal length of the fourth lens, R8 is a radius of curvature of an image-side surface of the fourth lens, and R10 is a radius of curvature of an image-side surface of the fifth lens.

In one embodiment, the optical imaging lens satisfies: 1.7< -f6/(R12-R11) <3.7, wherein f6 is an effective focal length of the sixth lens, R11 is a radius of curvature of an object-side surface of the sixth lens, and R12 is a radius of curvature of an image-side surface of the sixth lens.

In one embodiment, the optical imaging lens satisfies: 3.2< (DT 12+ DT 32)/(DT 12-DT 32) <3.9, wherein DT12 is the effective half aperture of the image side surface of the first lens and DT32 is the effective half aperture of the image side surface of the third lens.

In one embodiment, the optical imaging lens satisfies: 2.9< -DT61/DT 31<3.4, wherein DT61 is the effective semi-aperture of the object-side surface of the sixth lens and DT31 is the effective semi-aperture of the object-side surface of the third lens.

In one embodiment, the optical imaging lens satisfies: 1.8< -f23/(CT 2+ T23+ CT 3) <2.9, wherein f23 is a combined focal length of the second lens and the third lens, CT2 is a center thickness of the second lens on the optical axis, T23 is a separation distance of the second lens and the third lens on the optical axis, and CT3 is a center thickness of the third lens on the optical axis.

In one embodiment, the optical imaging lens satisfies: 1.6< -f45/CT 5<2.3, wherein f45 is a combined focal length of the fourth lens and the fifth lens, and CT5 is a central thickness of the fifth lens on the optical axis.

In one embodiment, the optical imaging lens satisfies: 1 n T12/SAG12<1.5, wherein T12 is a spacing distance on the optical axis between the first lens and the second lens, and SAG12 is an on-axis distance between an intersection of the first lens image-side surface and the optical axis to an effective radius vertex of the first lens image-side surface.

In one embodiment, the optical imaging lens satisfies: 1.6 instead of SAG 52/(SAG 41+ SAG 61) <2.6, where SAG41 is an on-axis distance from an intersection of the fourth lens object-side surface and the optical axis to an effective radius vertex of the fourth lens object-side surface, SAG61 is an on-axis distance from an intersection of the sixth lens object-side surface and the optical axis to an effective radius vertex of the sixth lens object-side surface, and SAG52 is an on-axis distance from an intersection of the fifth lens image-side surface and the optical axis to an effective radius vertex of the fifth lens image-side surface.

In one embodiment, the optical imaging lens satisfies: 0.8< (ET 3+ ET 4)/ET 6<1.4, wherein ET3 is the edge thickness of the third lens, ET4 is the edge thickness of the fourth lens, and ET6 is the edge thickness of the sixth lens.

The six-piece type lens framework is adopted, and at least one of the following beneficial effects can be realized. By reasonably distributing the focal power, the surface type and the like of each lens, the optical imaging lens can effectively balance the low-order aberration of the imaging lens and reduce tolerance sensitivity while meeting the imaging requirement; the ultra-wide angle can be realized by controlling the field angle of the imaging lens within a certain range; by restricting the effective focal length of the third lens and the curvature radius of the side surface of the object image within a certain range, the optical aberration can be balanced, and the imaging effect of the system is improved.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following 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 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 the list of listed features, that the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, the use of "may" mean "one or more embodiments of the application" when describing embodiments of the application. Also, the term "exemplary" is intended to refer to examples or illustrations.

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 following provides a detailed description of the features, principles, and other aspects of the present application.

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 in order from the object side to the image side along the optical axis. Any two adjacent 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 negative optical power, with a concave object-side surface; the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the third lens has positive focal power, and the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface; the fourth lens has negative focal power; the fifth lens has positive focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface; the sixth lens has negative focal power, and can effectively balance the low-order aberration of the system and reduce tolerance sensitivity by reasonably controlling the focal power and the surface type of each group of the system.

The FOV is the maximum field angle of the optical imaging lens, and the super-wide angle can be realized by controlling the maximum field angle FOV of the optical imaging lens within a certain range. Specifically, the FOV may satisfy: 120 ° < FOV <130 °.

f3 is the effective focal length of the third lens, R5 is the curvature radius of the object side surface of the third lens, R6 is the curvature radius of the image side surface of the third lens, and by restricting the sum of the effective focal length f3 of the third lens and the curvature radii of the object side surface and the image side surface to be R5+ R6 within a certain range, optical aberration can be balanced, and better imaging quality is ensured. Specifically, the ratio of the effective focal length f3 of the third lens to the sum of the object-side radius of curvature R5 and the image-side radius of curvature R6 of the third lens may satisfy: 0.5-f3/(R5 + R6) <5.5, further, it may satisfy 0.5-f3/(R5 + R6) <3.0.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 1.4< -f 1/R1<2.6, wherein f1 is the effective focal length of the first lens, and R1 is the curvature radius of the object side surface of the first lens. The ratio of the effective focal length f1 of the first lens to the curvature radius R1 of the object side surface of the first lens is set within a reasonable range, so that optical aberration can be balanced, and better imaging quality is ensured. More specifically, the ratio of f1 to R1 further satisfies: 1.5 were sf1/R1 <2.5.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies: 1.8< (f 5-f 4)/(R8 + R10) <4.4, wherein f5 is the effective focal length of the fifth lens, f4 is the effective focal length of the fourth lens, R8 is the curvature radius of the image side surface of the fourth lens, and R10 is the curvature radius of the image side surface of the fifth lens. By reasonably controlling the ratio of the effective focal length difference of the fifth lens and the fourth lens to the sum of the curvature radii of the image side surfaces of the fourth lens and the fifth lens within a certain range, the system can better realize light path deflection and balance high-level spherical aberration generated by the imaging system. More specifically, the difference between f5 and f4 and the sum of R8 and R10 further satisfy: 1.9< (f 5-f 4)/(R8 + R10) <4.3.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies: 1.7< -f6/(R12-R11) <3.7, wherein f6 is the effective focal length of the sixth lens, R11 is the radius of curvature of the object-side surface of the sixth lens, and R12 is the radius of curvature of the image-side surface of the sixth lens. By controlling the ratio of the effective focal length f6 of the sixth lens to the curvature radius difference of two side faces of the object image, the deflection angle of marginal light of the system can be reasonably controlled, the optical lens is ensured to have good processing characteristic, and the system sensitivity is reduced. More specifically, the ratio of f6 to the difference between R12 and R11 further satisfies: f 6/(R12-R11) <3.6 is more than or equal to 1.8.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies 3.2< (DT 12+ DT 32)/(DT 12-DT 32) <3.9, where dt12 is the effective half aperture of the image-side surface of the first lens and DT32 is the effective half aperture of the image-side surface of the third lens. The effective half aperture ratio of the image side surfaces of the first lens and the third lens is controlled within a certain range, so that the segment difference of the lens structure can be reduced, the processability is improved, and the sensitivity is reduced. More specifically, the ratio of the sum of DT12, DT32 to the difference between DT12, DT32 further satisfies: 3.4< (DT 12+ DT 32)/(DT 12-DT 32) <3.8.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies: 2.9< -DT61/DT 31<3.4 >, DT61 is the effective semi-aperture of the object-side surface of the sixth lens and DT31 is the effective semi-aperture of the object-side surface of the third lens. Effective half bore through injecing sixth lens and third lens object side is in reasonable within range, can reduce the size of camera lens, satisfies the camera lens miniaturization, promotes the resolving power. More specifically, DT61 and DT31 further satisfy: 3.0-woven fabric DT61/DT31<3.3.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies: 1.8 instead of f 23/(CT 2+ T23+ CT 3) <2.9, f23 is a combined focal length of the second lens and the third lens, CT2 is a central thickness of the second lens on the optical axis, T23 is an air space between the second lens and the third lens on the optical axis, and CT3 is a central thickness of the third lens on the optical axis. By controlling the ratio of the combined focal length of the second lens and the third lens to the sum of the central thickness of the second lens and the third lens on the optical axis and the air gap, the focal power of the second lens and the focal power of the third lens can be reasonably distributed, the off-axis aberration of the system is balanced, and the aberration correction capability is improved. More specifically, the ratio of f23 to the sum of CT2, T23, and CT3 further satisfies: 1.9 were woven fabric f23/(CT 2+ T23+ CT 3) <2.8.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies: 1.6< -f45/CT 5<2.3, wherein f45 is the combined focal length of the fourth lens and the fifth lens, and CT5 is the central thickness of the fifth lens on the optical axis. By controlling the ratio of the composite focal length of the fourth lens and the fifth lens to the central thickness of the fifth lens on the optical axis, the coma aberration of the system can be reasonably controlled, so that the optical system has good optical performance. Further, the ratio of f45 to CT5 may satisfy: 1.7 were & lt, f45/CT5 & lt, 2.2.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies: 1.1<T12/SAG12<1.5, T12 is the distance between the first lens and the second lens on the optical axis, and SAG12 is the distance between the intersection point of the image side surface of the first lens and the optical axis and the effective radius vertex of the image side surface of the first lens. By restraining the distance T12 between the first lens and the second lens on the optical axis and the rise SAG12 of the image side surface of the first lens in a reasonable range, the processing and forming of the lenses are favorably ensured, the sensitivity is reduced, and the imaging effect of the system is improved. More specifically, the distance T12 between the first lens and the second lens on the optical axis and the rise SAG12 of the image side surface of the first lens may satisfy 1.15T 12/SAG12<1.45.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies: 1.6< -SAG 52/(SAG 41+ SAG 61) <2.6, < SAG41 > is an on-axis distance between an intersection of the fourth lens object-side surface and the optical axis and an effective radius vertex of the fourth lens object-side surface, SAG61 is an on-axis distance between an intersection of the sixth lens object-side surface and the optical axis and an effective radius vertex of the sixth lens object-side surface, and SAG52 is an on-axis distance between an intersection of the fifth lens image-side surface and the optical axis and an effective radius vertex of the fifth lens image-side surface. The rise SAG52 of the image side surface of the fifth lens and the rise SAG41 and SAG61 of the object side surfaces of the fourth lens and the sixth lens are reasonably controlled within a certain range, the chief ray angle of the optical imaging lens can be adjusted, the relative brightness of the optical imaging lens group can be effectively improved, and the image plane definition is improved. More specifically, the SAG52, the SAG41, and the SAG61 may satisfy: 1.7 are woven to be SAG 52/(SAG 41+ SAG 61) <2.6.

In an exemplary embodiment, an optical imaging lens according to the present application satisfies: 0.8< (ET 3+ ET 4)/ET 6<1.4, ET3 is the edge thickness of the third lens, ET4 is the edge thickness of the fourth lens, and ET6 is the edge thickness of the sixth lens. The edge thicknesses ET3, ET4 and ET6 of the third lens, the fourth lens and the sixth lens are controlled within a certain range, so that the manufacturing and molding of each lens are facilitated, and the optical imaging lens with better quality is obtained through assembly. More specifically, ET3, ET4, ET6 may satisfy: 1.0< (ET 3+ ET 4)/ET 6<1.3.

In an exemplary embodiment, the effective focal length f1 of the first lens may be, for example, in the range of-6 mm to-3 mm, the effective focal length f2 of the second lens may be, for example, in the range of-91 mm to 8mm, the effective focal length f3 of the third lens may be, for example, in the range of 2mm to 3mm, the effective focal length f4 of the fourth lens may be, for example, in the range of-8 mm to-4 mm, the effective focal length f5 of the fifth lens may be, for example, in the range of 1mm to 2mm, and the effective focal length f6 of the sixth lens may be, for example, in the range of-2 mm to-3 mm.

In an exemplary embodiment, the total effective focal length f of the optical imaging lens may be, for example, in a range of 1.5mm to 2mm, 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) may be, for example, in a range of 5mm to 5.5mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging surface S15 of the optical imaging lens may be, for example, in a range of 3.0mm to 3.2 mm.

In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the object side and the first lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting the photosensitive element on the imaging surface. The application provides an optical imaging lens with characteristics of miniaturization, high imaging quality, super wide angle and the like. The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, six lenses described above. By reasonably distributing the focal power and the surface type of each lens, the field angle of the imaging lens, the on-axis distance between the lenses and the like, the low-order aberration of the imaging lens can be effectively balanced, the tolerance sensitivity is reduced, the processing and the forming of the lenses are favorably ensured, the sensitivity is reduced, and the imaging effect of the system is improved.

In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspheric 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 aspheric 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 lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens has an object-side surface and an image-side surface which 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 stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image plane S15.

The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E10 has an object side surface S13 and an image side surface 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 millimeters (mm).

TABLE 1

In this example, the total effective focal length f of the optical imaging lens is 1.83mm, the maximum field angle FOV of the optical imaging lens is 125.7 °, the total length TTL of the optical imaging lens is 5.29mm, and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.19mm.

In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 to the sixth lens E6 are aspheric, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c =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 aspheric surface. Table 2 below gives the coefficients A of the higher order terms which can be used for the aspherical mirror surfaces S1 to S12 in example 1 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ 、A ₂₂ 、 A ₂₄ 、A ₂₆ 、A ₂₈ And A ₃₀ 。

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

7.1871E-01

-1.2798E+00

2.2687E+00

-3.5060E+00

4.4569E+00

-4.4994E+00

3.5241E+00

S2

8.1127E-01

-1.6835E+00

6.3881E+00

-2.7389E+01

9.2167E+01

-2.2352E+02

3.8911E+02

S3

-1.1225E-02

2.6979E-01

-5.3729E+00

3.5173E+01

-1.4642E+02

4.0715E+02

-7.6258E+02

S4

-4.8140E-02

4.1098E+00

-1.0040E+02

1.4496E+03

-1.3962E+04

9.4069E+04

-4.5455E+05

S5

-4.4957E-03

4.4733E-01

-7.1367E+00

6.5157E+01

-3.9001E+02

1.4661E+03

-3.3583E+03

S6

-1.4095E-01

-1.2412E+00

2.7622E+01

-3.4952E+02

2.6741E+03

-1.3161E+04

4.2564E+04

S7

-3.2047E-01

-2.3625E+00

3.2674E+01

-2.6193E+02

1.5071E+03

-6.4942E+03

2.0663E+04

S8

-5.6557E-02

-3.4182E+00

2.7331E+01

-1.3452E+02

4.7258E+02

-1.2293E+03

2.3952E+03

S9

2.3850E-01

-1.8962E+00

4.6047E+00

7.5010E+00

-9.8085E+01

3.8493E+02

-9.2659E+02

S10

5.2172E-01

-1.9788E+00

6.3393E+00

-1.8567E+01

5.0938E+01

-1.1878E+02

2.1421E+02

S11

-4.3975E-02

-1.3122E+00

4.1364E+00

-7.6742E+00

9.6992E+00

-8.6633E+00

5.5315E+00

S12

-8.2845E-01

1.0031E+00

-1.0638E+00

9.0434E-01

-5.9791E-01

3.0521E-01

-1.2055E-01

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-2.1043E+00

9.4185E-01

-3.0918E-01

7.1988E-02

-1.1231E-02

1.0511E-03

-4.4559E-05

S2

-4.9007E+02

4.4725E+02

-2.9300E+02

1.3438E+02

-4.0992E+01

7.4744E+00

-6.1666E-01

S3

9.5016E+02

-7.5391E+02

3.4410E+02

-6.8674E+01

0.0000E+00

S4

1.5941E+06

-4.0603E+06

7.4278E+06

-9.4994E+06

8.0541E+06

-4.0629E+06

9.2214E+05

S5

4.2606E+03

-2.3002E+03

0.0000E+00

S6

-8.9961E+04

1.1956E+05

-9.0633E+04

2.9866E+04

0.0000E+00

S7

-4.6804E+04

7.0936E+04

-6.2265E+04

1.3651E+04

3.0087E+04

-3.0054E+04

9.0180E+03

S8

-3.4981E+03

3.8012E+03

-3.0222E+03

1.7049E+03

-6.4562E+02

1.4712E+02

-1.5251E+01

S9

1.5336E+03

-1.8055E+03

1.5165E+03

-8.9073E+02

3.4800E+02

-8.1265E+01

8.5781E+00

S10

-2.8500E+02

2.7368E+02

-1.8624E+02

8.7262E+01

-2.6700E+01

4.7912E+00

-3.8156E-01

S11

-2.5231E+00

8.1187E-01

-1.7899E-01

2.5486E-02

-2.0589E-03

6.2140E-05

1.2169E-06

S12

3.6898E-02

-8.6979E-03

1.5507E-03

-2.0185E-04

1.8036E-05

-9.8494E-07

2.4691E-08

TABLE 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 image heights. 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 an imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens system 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, a description 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 stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive refractive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive refractive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E10 has an object side surface S13 and an image side surface S14. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.

In this example, the total effective focal length f of the optical imaging lens is 1.83mm, the maximum field angle FOV of the optical imaging lens is 125.2 °, the total length TTL of the optical imaging lens is 5.28mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 3.19mm.

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 millimeters (mm). Table 4 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 3

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

6.4699E-01

-1.2475E+00

2.7234E+00

-5.2374E+00

7.9230E+00

-9.0368E+00

7.6718E+00

S2

8.5982E-01

-3.1159E+00

1.8590E+01

-9.1391E+01

3.2282E+02

-8.1379E+02

1.4817E+03

S3

-2.0293E-02

1.0784E+00

-1.4826E+01

1.0577E+02

-5.0095E+02

1.6111E+03

-3.5088E+03

S4

-4.5072E-01

2.2209E+01

-6.3266E+02

1.1395E+04

-1.3816E+05

1.1704E+06

-7.0812E+06

S5

-5.6741E-02

1.1898E+00

-2.2327E+01

2.0888E+02

-1.1130E+03

3.4882E+03

-6.2229E+03

S6

-2.4639E-01

1.8528E-01

-7.9683E+00

1.3432E+02

-1.2310E+03

7.0050E+03

-2.6038E+04

S7

-6.3118E-01

5.1514E+00

-1.1280E+02

1.5550E+03

-1.3713E+04

8.1712E+04

-3.4109E+05

S8

-1.0704E-01

-3.7283E+00

4.0393E+01

-2.7201E+02

1.3072E+03

-4.5926E+03

1.1855E+04

S9

2.5031E-01

-4.3934E+00

3.9521E+01

-2.3537E+02

9.6465E+02

-2.7813E+03

5.7366E+03

S10

6.2197E-01

-2.3728E+00

8.7319E+00

-3.0212E+01

9.2258E+01

-2.2245E+02

3.9635E+02

S11

-1.2666E-01

-1.2986E+00

5.6069E+00

-1.3293E+01

2.0749E+01

-2.2604E+01

1.7674E+01

S12

-1.1257E+00

1.9912E+00

-2.8943E+00

3.1391E+00

-2.5055E+00

1.4792E+00

-6.5007E-01

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-4.8222E+00

2.2274E+00

-7.4460E-01

1.7498E-01

-2.7384E-02

2.5606E-03

-1.0818E-04

S2

-1.9651E+03

1.8977E+03

-1.3191E+03

6.4244E+02

-2.0791E+02

4.0132E+01

-3.4945E+00

S3

5.0815E+03

-4.6757E+03

2.4691E+03

-5.6894E+02

0.0000E+00

S4

3.0937E+07

-9.7650E+07

2.2024E+08

-3.4554E+08

3.5768E+08

-2.1923E+08

6.0153E+07

S5

5.5169E+03

-1.5525E+03

0.0000E+00

S6

6.3317E+04

-9.6986E+04

8.4740E+04

-3.2124E+04

0.0000E+00

S7

1.0171E+06

-2.1785E+06

3.3240E+06

-3.5216E+06

2.4575E+06

-1.0135E+06

1.8662E+05

S8

-2.2449E+04

3.0958E+04

-3.0619E+04

2.1106E+04

-9.6128E+03

2.5969E+03

-3.1487E+02

S9

-8.5397E+03

9.1741E+03

-7.0360E+03

3.7541E+03

-1.3235E+03

2.7719E+02

-2.6120E+01

S10

-5.0910E+02

4.6633E+02

-3.0045E+02

1.3255E+02

-3.8001E+01

6.3567E+00

-4.6916E-01

S11

-1.0049E+01

4.1613E+00

-1.2420E+00

2.6025E-01

-3.6334E-02

3.0350E-03

-1.1475E-04

S12

2.1306E-01

-5.1802E-02

9.2024E-03

-1.1593E-03

9.8003E-05

-4.9816E-06

1.1499E-07

TABLE 4

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 image heights. 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 the 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 stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has a negative refractive power, and has a concave object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive refractive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E10 has an object side surface S13 and an image side surface 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 1.83mm, the maximum field angle FOV of the optical imaging lens is 125.5 °, the total length TTL of the optical imaging lens is 5.28mm, and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.19mm.

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). Table 6 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 5

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

5.4030E-01

-8.5337E-01

1.4685E+00

-2.2555E+00

2.8032E+00

-2.6874E+00

1.9473E+00

S2

6.5518E-01

-1.4085E+00

6.2974E+00

-2.7491E+01

8.7949E+01

-1.9808E+02

3.1638E+02

S3

5.9415E-02

-5.9578E-01

3.2138E+00

-1.6272E+01

5.3438E+01

-1.1583E+02

1.6351E+02

S4

9.5317E-02

-9.5962E-01

1.4351E+01

-1.6463E+02

1.2977E+03

-7.3392E+03

3.0880E+04

S5

-1.8964E-02

1.0099E+00

-1.8576E+01

1.8866E+02

-1.1806E+03

4.5757E+03

-1.0719E+04

S6

-1.8230E-01

-1.2710E-01

5.0874E+00

-8.0868E+01

6.5213E+02

-3.1810E+03

9.8294E+03

S7

-6.3854E-01

3.3726E+00

-4.6808E+01

5.2328E+02

-4.2340E+03

2.4567E+04

-1.0348E+05

S8

-5.3673E-01

1.4137E+00

-4.9565E+00

1.7850E+01

-5.2140E+01

1.0932E+02

-1.5632E+02

S9

-6.2191E-02

-3.8049E-01

4.7312E+00

-3.3008E+01

1.7096E+02

-6.3026E+02

1.6387E+03

S10

5.5168E-01

-2.2186E+00

8.8703E+00

-3.2518E+01

1.0126E+02

-2.4595E+02

4.4439E+02

S11

-1.0727E-01

-1.1729E+00

4.7232E+00

-1.0768E+01

1.6404E+01

-1.7590E+01

1.3613E+01

S12

-9.9298E-01

1.5851E+00

-2.1736E+00

2.2399E+00

-1.6824E+00

9.1667E-01

-3.6196E-01

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

-1.0559E+00

4.2423E-01

-1.2419E-01

2.5711E-02

-3.5632E-03

2.9632E-04

-1.1173E-05

S2

-3.6232E+02

2.9820E+02

-1.7473E+02

7.1079E+01

-1.9069E+01

3.0328E+00

-2.1642E-01

S3

-1.4194E+02

6.7697E+01

-1.3044E+01

-3.2382E-01

0.0000E+00

S4

-9.8607E+04

2.4001E+05

-4.3928E+05

5.8428E+05

-5.3041E+05

2.9202E+05

-7.3078E+04

S5

1.3891E+04

-7.6552E+03

0.0000E+00

S6

-1.9321E+04

2.3301E+04

-1.5613E+04

4.3992E+03

0.0000E+00

S7

3.1896E+05

-7.1873E+05

1.1695E+06

-1.3367E+06

1.0174E+06

-4.6271E+05

9.5117E+04

S8

1.4756E+02

-8.7605E+01

2.9531E+01

-4.2938E+00

0.0000E+00

S9

-3.0297E+03

4.0022E+03

-3.7538E+03

2.4432E+03

-1.0495E+03

2.6756E+02

-3.0656E+01

S10

-5.8569E+02

5.5704E+02

-3.7682E+02

1.7644E+02

-5.4275E+01

9.8559E+00

-7.9990E-01

S11

-7.6911E+00

3.1747E+00

-9.4702E-01

1.9879E-01

-2.7850E-02

2.3372E-03

-8.8816E-05

S12

1.0308E-01

-2.0900E-02

2.9392E-03

-2.7317E-04

1.5305E-05

-4.2169E-07

2.7897E-09

TABLE 6

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 image heights. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents the deviation of different image heights on the imaging plane after the 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 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 image side: a first lens E1, a second lens E2, a stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a 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 convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E10 has an object side surface S13 and an image side surface 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 1.83mm, the maximum field angle FOV of the optical imaging lens is 125.8 °, the total length TTL of the optical imaging lens is 5.24mm, and the half ImgH of the diagonal length of the effective pixel area on the imaging plane S15 of the optical imaging lens is 3.20mm.

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 millimeters (mm). Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 7

TABLE 8

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 image heights. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents a 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 system 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 stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image plane 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 convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive refractive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E10 has an object side surface S13 and an image side surface S14. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.

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). Table 10 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 9

TABLE 10

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 image heights. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents deviation of different image heights on an imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens system 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 stop STO, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a filter E7, and an image forming surface S15.

The first lens element E1 has a 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 the object-side surface S3 is convex and the image-side surface S4 is concave. The third lens element E3 has positive refractive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has a negative refractive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive refractive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The filter E10 has an object side surface S13 and an image side surface S14. The light from the object passes through the respective surfaces S1 to S14 in order and is finally imaged on the imaging plane S15.

In this example, the total effective focal length f of the optical imaging lens is 1.83mm, the maximum field angle FOV of the optical imaging lens is 124.7 °, the total length TTL of the optical imaging lens is 5.28mm, and the half of the diagonal length ImgH of the effective pixel area on the imaging surface S15 of the optical imaging lens is 3.20mm.

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). Table 12 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.

TABLE 11

TABLE 12

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 image heights. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents deviation of different image heights on an 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 conclusion, examples 1 to 6 each satisfy the relationship shown in table 13.

Conditions/examples	1	2	3	4	5	6
							FOV(°)	125.7	125.2	125.5	125.8	125.8	124.7
f3/(R5+R6)	1.61	0.60	2.27	1.52	1.47	5.47
							f1/R1	1.62	1.73	1.58	1.88	1.88	2.47
(f5-f4)/(R8+R10)	2.29	1.92	2.70	2.76	2.41	4.25
							f6/(R12-R11)	3.14	1.80	3.20	3.14	3.15	3.54
(DT12+DT32)/(DT12-DT32)	3.72	3.73	3.71	3.49	3.45	3.68
							DT61/DT31	3.14	3.21	3.12	3.27	3.28	3.13
f23/(CT2+T23+CT3)	2.02	1.97	2.04	2.22	2.18	2.75
							f45/CT5	2.10	1.75	1.96	1.90	1.91	2.03
T12/SAG12	1.19	1.26	1.17	1.22	1.19	1.44
							SAG52/(SAG41+SAG61)	1.73	1.85	1.76	1.92	1.88	2.55
(ET3+ET4)/ET6	1.07	1.07	1.23	1.19	1.19	1.09

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 apparatus 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 in which any combination of the above features or their equivalents is incorporated without departing from the spirit of the invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. The optical imaging lens is characterized by comprising a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens which have focal power in order from an object side to an image side along an optical axis,

the first lens has negative focal power, and the object side surface of the first lens is a concave surface;

the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface;

the third lens has positive focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a convex surface;

the fourth lens has a negative optical power;

the fifth lens has positive focal power, the object side surface of the fifth lens is a concave surface, and the image side surface of the fifth lens is a convex surface;

the sixth lens has a negative power and is,

wherein, the optical imaging lens satisfies:

120 ° < FOV <130 °; and

0.5<f3/(R5+R6)<5.5，

wherein, FOV is the maximum field angle of the optical imaging lens, f3 is the effective focal length of the third lens, R5 is the curvature radius of the object-side surface of the third lens, and R6 is the curvature radius of the image-side surface of the third lens.

2. The optical imaging lens according to claim 1, characterized in that the optical imaging lens satisfies:

1.4<f1/R1<2.6，

wherein f1 is an effective focal length of the first lens, and R1 is a curvature radius of an object side surface of the first lens.

3. The optical imaging lens according to claim 1, characterized in that the optical imaging lens satisfies:

1.8<(f5-f4)/(R8+R10)<4.4，

wherein f5 is an effective focal length of the fifth lens element, f4 is an effective focal length of the fourth lens element, R8 is a radius of curvature of an image-side surface of the fourth lens element, and R10 is a radius of curvature of an image-side surface of the fifth lens element.

4. The optical imaging lens according to claim 1, characterized in that the optical imaging lens satisfies:

1.7<f6/(R12-R11)<3.7，

wherein f6 is an effective focal length of the sixth lens element, R11 is a radius of curvature of an object-side surface of the sixth lens element, and R12 is a radius of curvature of an image-side surface of the sixth lens element.

5. The optical imaging lens according to claim 1, characterized in that the optical imaging lens satisfies:

3.2<(DT12+DT32)/(DT12-DT32)<3.9，

wherein DT12 is an effective semi-aperture of the image side surface of the first lens, and DT32 is an effective semi-aperture of the image side surface of the third lens.

6. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies:

2.9<DT61/DT31<3.4，

wherein DT61 is an effective half aperture of the object-side surface of the sixth lens, and DT31 is an effective half aperture of the object-side surface of the third lens.

7. The optical imaging lens according to claim 1, characterized in that the optical imaging lens satisfies:

1.8<f23/(CT2+T23+CT3)<2.9，

wherein f23 is a composite focal length of the second lens and the third lens, CT2 is a central thickness of the second lens on the optical axis, T23 is a distance between the second lens and the third lens on the optical axis, and CT3 is a central thickness of the third lens on the optical axis.

8. The optical imaging lens according to claim 3, characterized in that the optical imaging lens satisfies:

1.6<f45/CT5<2.3，

wherein f45 is a composite focal length of the fourth lens and the fifth lens, and CT5 is a central thickness of the fifth lens on the optical axis.

9. The optical imaging lens of claim 1, wherein the optical imaging lens satisfies:

1<T12/SAG12<1.5，

wherein, T12 is the distance between the first lens and the second lens on the optical axis, and SAG12 is the on-axis distance between the intersection point of the first lens image side surface and the optical axis and the effective radius vertex of the first lens image side surface.

10. The optical imaging lens according to any one of claims 1 to 9, characterized in that the optical imaging lens satisfies:

1.6<SAG52/(SAG41+SAG61)<2.6，

SAG41 is an on-axis distance between an intersection point of the fourth lens object-side surface and the optical axis and an effective radius vertex of the fourth lens object-side surface, SAG61 is an on-axis distance between an intersection point of the sixth lens object-side surface and the optical axis and an effective radius vertex of the sixth lens object-side surface, and SAG52 is an on-axis distance between an intersection point of the fifth lens image-side surface and the optical axis and an effective radius vertex of the fifth lens image-side surface.