CN113589484B

CN113589484B - Optical imaging lens

Info

Publication number: CN113589484B
Application number: CN202110887221.5A
Authority: CN
Inventors: 龚停停; 缪力力; 宋立通; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2023-07-14
Anticipated expiration: 2041-08-03
Also published as: CN113589484A

Abstract

The invention provides an optical imaging lens. The optical imaging lens sequentially comprises from an object side of the optical imaging lens to an image side of the optical imaging lens: the image side surface of the first lens is a concave surface; a second lens having positive optical power; the object side surface of the third lens is a convex surface; a fourth lens having positive optical power; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the on-axis distance TTL from the object side surface of the first lens element to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the aperture value Fno of the optical imaging lens satisfy: 1< TTL/ImgH/FNo <1.5; the maximum half field angle Semi-FOV of the optical imaging lens satisfies: 60 ° < Semi-FOV <70 °. The invention solves the problem that the miniaturization and the small distortion of the optical imaging lens in the prior art cannot be combined.

Description

Optical imaging lens

Technical Field

The invention relates to the technical field of optical imaging equipment, in particular to an optical imaging lens.

Background

In recent years, as the size of an image sensor is miniaturized and the number of pixels is increased, an optical imaging lens to be matched with the image sensor is also put on higher demands. For example, optical imaging lenses commonly used in photography, unmanned aerial vehicle, security protection, and the like are required to have a larger angle of view to acquire as much object information as possible, and further, the optical imaging lens is required to have a smaller size and higher imaging definition. In addition, in order to obtain more realistic physical information, some imaging devices generally perform secondary processing on an image formed by an optical imaging lens through image software, where the distortion size and shape of the optical imaging lens are an important factor affecting the processing effect.

That is, the optical imaging lens in the prior art has a problem that miniaturization and small distortion cannot be compatible.

Disclosure of Invention

The invention mainly aims to provide an optical imaging lens, so as to solve the problem that the optical imaging lens in the prior art cannot be miniaturized and distorted.

In order to achieve the above object, according to one aspect of the present invention, there is provided an optical imaging lens comprising, in order from an object side of the optical imaging lens to an image side of the optical imaging lens: the image side surface of the first lens is a concave surface; a second lens having positive optical power; the object side surface of the third lens is a convex surface; a fourth lens having positive optical power; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the on-axis distance TTL from the object side surface of the first lens element to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the aperture value Fno of the optical imaging lens satisfy: 1< TTL/ImgH/FNo <1.5; the maximum half field angle Semi-FOV of the optical imaging lens satisfies: 60 ° < Semi-FOV <70 °.

Further, the effective focal length f of the optical imaging lens, the maximum half field angle Semi-FOV of the optical imaging lens, and the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens satisfy: 0.5< f tan (Semi-FOV)/TD <0.6.

Further, the on-axis distance TTL from the object side surface of the first lens element to the image plane and the on-axis distance TD from the object side surface of the first lens element to the image side surface of the fifth lens element satisfy: 1.2< TTL/TD <1.3.

Further, the effective focal length f of the optical imaging lens and half of the diagonal length ImgH of the effective pixel region on the imaging surface satisfy: 0.5< f/ImgH <0.7.

Further, the distance SD between the diaphragm and the image side of the fifth lens and the on-axis distance TD between the object side of the first lens and the image side of the fifth lens satisfy: 0.6< SD/TD <0.7.

Further, the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens and the effective focal length f3 of the third lens satisfy: i f1/f-f3/f <0.6.

Further, the effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens satisfy: 0.8< f2/f <1.1.

Further, the effective focal length f2 of the second lens element, the radius of curvature R3 of the object-side surface of the second lens element, and the radius of curvature R4 of the image-side surface of the second lens element satisfy: 0.5< f 2/(R3+R4) <0.7.

Further, the curvature radius R9 of the object side surface of the fifth lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: 0< (R9-R10)/(R9+R10) <0.3.

Further, the air interval T12 on the optical axis between the first lens and the second lens and the sum Σat of the air intervals on the optical axis between adjacent two lenses among the first lens to the fifth lens satisfy: 0.7< T12/ΣAT.

Further, the thickness CT1 of the first lens on the optical axis, the thickness CT2 of the second lens on the optical axis, the thickness CT3 of the third lens on the optical axis, and the thickness CT5 of the fifth lens on the optical axis satisfy: CT1-CT 2/CT 3-CT 5< 0.5.

Further, the thickness CT1 of the first lens on the optical axis and the thickness CT2 of the second lens on the optical axis satisfy: 0.9< CT1/CT2<1.1.

Further, the sum Σat of the air intervals on the optical axis between the adjacent two lenses in the first lens to the fifth lens and the on-axis distance BFL from the image side surface to the imaging surface of the fifth lens satisfy: 0.7< ΣAT/BFL <0.9.

Further, the thickness CT1 of the first lens on the optical axis and the edge thickness ET1 of the first lens satisfy: 1< CT1/ET1<1.5.

Further, the edge thickness ET2 of the second lens, the edge thickness ET3 of the third lens and the edge thickness ET4 of the fourth lens satisfy: 0.3< ET4/(ET 2+ ET 3) <0.4.

Further, the dispersion coefficient V3 of the third lens, the dispersion coefficient V4 of the fourth lens, and the dispersion coefficient V5 of the fifth lens satisfy: v3+v5< V4.

Further, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT52 of the image side surface of the fifth lens satisfy the following conditions: 0.9< DT11/DT52<1.1.

Further, a first pass throughMinimum value DT of maximum effective radius of mirror to fifth lens _MIN And a maximum value DT of maximum effective radii of the first lens to the fifth lens _MAX The method meets the following conditions: 0.2<DT _MIN /DT _MAX <0.5。

Further, an on-axis distance SAG21 between an intersection point of the object side surface of the second lens and the optical axis and an effective radius vertex of the object side surface of the second lens, an on-axis distance SAG22 between an intersection point of the image side surface of the second lens and the optical axis and an effective radius vertex of the image side surface of the second lens, an on-axis distance SAG31 between an intersection point of the object side surface of the third lens and the optical axis and an effective radius vertex of the object side surface of the third lens and an on-axis distance SAG32 between an intersection point of the image side surface of the third lens and an effective radius vertex of the image side surface of the third lens satisfy: 1< (SAG 22-SAG 31)/(SAG21+SAG32) <1.5.

Further, an on-axis distance SAG12 between an intersection point of the image side surface of the first lens and the optical axis and an effective radius vertex of the image side surface of the first lens, an on-axis distance SAG22 between an intersection point of the image side surface of the second lens and the optical axis and an effective radius vertex of the image side surface of the second lens and an on-axis distance SAG42 between an intersection point of the image side surface of the fourth lens and the optical axis and an effective radius vertex of the image side surface of the fourth lens satisfy: 0.8< SAG 42/(SAG12+SAG22) <1.

Further, the distortion DIST of the optical imaging lens at 0.8 field of view _0.8F The method meets the following conditions: i DIST _0.8F |<0.5％。

According to another aspect of the present invention, there is provided an optical imaging lens comprising, in order from an object side of the optical imaging lens to an image side of the optical imaging lens: the image side surface of the first lens is a concave surface; a second lens having positive optical power; the object side surface of the third lens is a convex surface; a fourth lens having positive optical power; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the on-axis distance TTL from the object side surface of the first lens element to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the aperture value Fno of the optical imaging lens satisfy: 1< TTL/ImgH/FNo <1.5; the effective focal length f of the optical imaging lens, the maximum half field angle Semi-FOV of the optical imaging lens and the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens satisfy the following conditions: 0.5< f tan (Semi-FOV)/TD <0.6.

Further, the maximum half field angle Semi-FOV of the optical imaging lens satisfies: 60 ° < Semi-FOV <70 °; the on-axis distance TTL from the object side surface of the first lens element to the image plane and the on-axis distance TD from the object side surface of the first lens element to the image side surface of the fifth lens element satisfy: 1.2< TTL/TD <1.3.

Further, a minimum value DT of the maximum effective radii of the first through fifth lenses _MIN And a maximum value DT of maximum effective radii of the first lens to the fifth lens _MAX The method meets the following conditions: 0.2<DT _MIN /DT _MAX <0.5。

By applying the technical scheme of the invention, the optical imaging lens sequentially comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens along the object side of the optical imaging lens to the image side of the optical imaging lens, wherein the image side of the first lens is a concave surface; the second lens has positive optical power; the object side surface of the third lens is a convex surface; the fourth lens has positive focal power; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the on-axis distance TTL from the object side surface of the first lens element to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the aperture value Fno of the optical imaging lens satisfy: 1< TTL/ImgH/FNo <1.5; the maximum half field angle Semi-FOV of the optical imaging lens satisfies: 60 ° < Semi-FOV <70 °.

By reasonably distributing the focal power and the surface shape of each lens, various aberrations of the system can be effectively balanced, so that the imaging quality is improved. The image side surface of the first lens is controlled to be concave, so that better light converging is facilitated, and the system meets the requirement of a large field angle. By controlling the second lens and the fourth lens to have positive optical power, it is advantageous to correct distortion and curvature of field of the system and to ensure compactness of the system. The object side surface of the fifth lens and the image side surface of the fifth lens are controlled to be convex and concave respectively, so that ghost images of the system can be effectively weakened, and the matching property of the emergent ray angle of the optical imaging lens and the chip is ensured.

In addition, by controlling the relationship between the on-axis distance TTL from the object side surface of the first lens to the imaging surface, half of the diagonal length of the effective pixel area on the imaging surface, imgH, and the aperture value FNo of the optical imaging lens, the system can be ensured to have a larger imaging surface and more light entering, and the miniaturization of the optical imaging lens can be realized as much as possible. And by restraining the maximum half field angle Semi-FOV of the optical imaging lens, the information in a larger field range of the object side can be received. The optical imaging lens has the characteristics of wide angle, small distortion and miniaturization.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 is a schematic view showing the structure of an optical imaging lens according to an example one of the present invention;

fig. 2 to 5 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 1, respectively;

fig. 6 is a schematic diagram showing the structure of an optical imaging lens according to example two of the present invention;

Fig. 7 to 10 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 6, respectively;

fig. 11 is a schematic view showing the structure of an optical imaging lens of example three of the present invention;

fig. 12 to 15 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 11, respectively;

fig. 16 is a schematic view showing the structure of an optical imaging lens of example four of the present invention;

fig. 17 to 20 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 16, respectively;

fig. 21 is a schematic view showing the structure of an optical imaging lens of example five of the present invention;

fig. 22 to 25 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 21, respectively;

fig. 26 is a schematic diagram showing the structure of an optical imaging lens of example six of the present invention;

fig. 27 to 30 show an on-axis chromatic aberration curve, a magnification chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens in fig. 26, respectively.

Wherein the above figures include the following reference numerals:

STO and diaphragm; e1, a first lens; s1, an object side surface of a first lens; s2, an image side surface of the first lens; e2, a second lens; s3, the object side surface of the second lens; s4, an image side surface of the second lens; e3, a third lens; s5, the object side surface of the third lens is provided; s6, an image side surface of the third lens; e4, a fourth lens; s7, an object side surface of the fourth lens; s8, an image side surface of the fourth lens is provided; e5, a fifth lens; s9, an object side surface of the fifth lens; s10, an image side surface of the fifth lens; e6, an optical filter; s11, an object side surface of the optical filter; s12, an image side surface of the optical filter; s13, an imaging surface.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all 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 unless otherwise indicated.

In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present invention.

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. Specifically, 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 near the object side becomes the object side of the lens, and the surface of each lens near the image side is called the image side of the lens. The determination of the surface shape in the paraxial region can be performed by a determination method by a person skilled in the art by positive or negative determination of the concave-convex with R value (R means the radius of curvature of the paraxial region, and generally means the R value on a lens database (lens data) in optical software). In the object side surface, when the R value is positive, the object side surface is judged to be convex, and when the R value is negative, the object side surface is judged to be concave; in the image side, the concave surface is determined when the R value is positive, and the convex surface is determined when the R value is negative.

The invention provides an optical imaging lens, which aims to solve the problem that miniaturization and small distortion cannot be achieved in the optical imaging lens in the prior art.

Example 1

As shown in fig. 1 to 30, the optical imaging lens sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens along an object side of the optical imaging lens to an image side of the optical imaging lens, wherein the image side of the first lens is a concave surface; the second lens has positive optical power; the object side surface of the third lens is a convex surface; the fourth lens has positive focal power; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the on-axis distance TTL from the object side surface of the first lens element to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the aperture value Fno of the optical imaging lens satisfy: 1< TTL/ImgH/FNo <1.5; the maximum half field angle Semi-FOV of the optical imaging lens satisfies: 60 ° < Semi-FOV <70 °.

In this embodiment, the effective focal length f of the optical imaging lens, the maximum half field angle Semi-FOV of the optical imaging lens, and the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens satisfy: 0.5< f tan (Semi-FOV)/TD <0.6. By limiting f (Semi-FOV)/TD within a reasonable range, the optical size of the system can be reduced as much as possible while the angle of view of the system is ensured, thereby satisfying the miniaturization characteristic of the optical imaging lens.

In this embodiment, the on-axis distance TTL from the object side surface of the first lens element to the image plane and the on-axis distance TD from the object side surface of the first lens element to the image side surface of the fifth lens element satisfy: 1.2< TTL/TD <1.3. The ratio of the on-axis distance TTL from the object side surface of the first lens to the imaging surface to the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens is controlled within a reasonable range, so that the sufficient distance is reserved from the image side surface of the fifth lens to the imaging surface in the system, the rationality and the processability of structural arrangement are ensured, and in addition, the optical total length of the system is favorably controlled.

In this embodiment, the effective focal length f of the optical imaging lens and half of the diagonal length ImgH of the effective pixel region on the imaging surface satisfy: 0.5< f/ImgH <0.7. The object space angle of view of the optical imaging lens can be effectively controlled by controlling the ratio between the effective focal length f of the optical imaging lens and half of the diagonal length ImgH of the effective pixel area on the imaging surface to be in a reasonable range. Preferably, 0.5< f/ImgH.ltoreq.0.6.

In the present embodiment, the distance SD between the aperture stop and the image side of the fifth lens element and the on-axis distance TD between the object side of the first lens element and the image side of the fifth lens element satisfy: 0.6< SD/TD <0.7. By controlling the ratio of the distance SD from the diaphragm to the image side surface of the fifth lens to the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens within a reasonable range, the spherical aberration and the astigmatism of the system can be effectively corrected, and the imaging definition of the system can be improved.

In the present embodiment, the effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens, and the effective focal length f3 of the third lens satisfy: i f1/f-f3/f <0.6. The conditional expression is satisfied, so that the contribution of the first lens and the third lens to the effective focal length of the whole system is controlled, and the on-axis and off-axis aberration of the system is balanced. Preferably, 0.1< |f1/f-f3/f| <0.6.

In the present embodiment, the effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens satisfy: 0.8< f2/f <1.1. The ratio between the effective focal length f of the optical imaging lens and the effective focal length f2 of the second lens is controlled within a reasonable range, so that the contribution of the second lens behind the diaphragm to the focal length of the whole optical system is favorably controlled, and the curvature of field and coma aberration of the system are corrected.

In the present embodiment, the effective focal length f2 of the second lens element, the radius of curvature R3 of the object-side surface of the second lens element, and the radius of curvature R4 of the image-side surface of the second lens element satisfy: 0.5< f 2/(R3+R4) <0.7. The method can control the effective focal length of the second lens, reduce the curvature of two sides as much as possible, improve the processing formability of the lens and be beneficial to reducing the overall sensitivity of the system.

In the present embodiment, the curvature radius R9 of the object side surface of the fifth lens and the curvature radius R10 of the image side surface of the fifth lens satisfy: 0< (R9-R10)/(R9+R10) <0.3. By controlling the conditional expression within a reasonable range, the correction of the curvature of field and distortion of the system is facilitated, and the processing and forming of the fifth lens are facilitated. Preferably, 0< (R9-R10)/(R9+R10) < 0.2.

In the present embodiment, the air interval T12 on the optical axis between the first lens and the second lens and the sum Σat of the air intervals on the optical axis between the adjacent two lenses among the first lens to the fifth lens satisfy: 0.7< T12/ΣAT. By controlling T12/ΣATwithin a reasonable range, not only can the chromatic aberration and astigmatism of the system be effectively reduced, but also the optical total length of the optical imaging system can be compressed. Preferably, 0.7< T12/ΣAT <0.9.

In the present embodiment, the thickness CT1 of the first lens on the optical axis, the thickness CT2 of the second lens on the optical axis, the thickness CT3 of the third lens on the optical axis, and the thickness CT5 of the fifth lens on the optical axis satisfy: CT1-CT 2/CT 3-CT5 <0.5. The thickness of each lens on the optical axis can be effectively restrained by controlling the absolute CT1-CT 2/CT 3-CT5 within a reasonable range, and the forming and assembling of each lens are facilitated.

In the present embodiment, the thickness CT1 of the first lens on the optical axis and the thickness CT2 of the second lens on the optical axis satisfy: 0.9< CT1/CT2<1.1. The ratio of the thickness CT1 of the first lens on the optical axis to the thickness CT2 of the second lens on the optical axis is controlled within a reasonable range, so that on one hand, the on-axis aberration of the system is balanced, the imaging quality of the system is improved, on the other hand, the system has better assemblability, and the production yield is improved.

In the present embodiment, the sum Σat of the air intervals on the optical axis between the adjacent two lenses in the first lens to the fifth lens and the on-axis distance BFL from the image side surface to the imaging surface of the fifth lens satisfy: 0.7< ΣAT/BFL <0.9. By controlling the conditional expression within a reasonable range, the size of the system can be further compressed on the basis of reasonably arranging the lenses in space, and the miniaturization characteristic of the system is embodied.

In the present embodiment, the thickness CT1 of the first lens on the optical axis and the edge thickness ET1 of the first lens satisfy: 1< CT1/ET1<1.5. The processing and forming of the first lens are facilitated by controlling the ratio of the thickness CT1 of the first lens on the optical axis to the edge thickness ET1 of the first lens. Preferably, 1.1< CT1/ET1<1.4.

In the present embodiment, the edge thickness ET2 of the second lens, the edge thickness ET3 of the third lens, and the edge thickness ET4 of the fourth lens satisfy: 0.3< ET4/(ET 2+ ET 3) <0.4. Through reasonably restricting the conditional expression, the reasonable distribution of the second lens, the third lens and the fourth lens in space can be effectively controlled, the system is ensured to have better assemblability, and the ghost image energy of the system is reduced.

In the present embodiment, the dispersion coefficient V3 of the third lens, the dispersion coefficient V4 of the fourth lens, and the dispersion coefficient V5 of the fifth lens satisfy: v3+v5< V4. By controlling the sum of the dispersion coefficient V3 of the third lens and the dispersion coefficient V5 of the fifth lens to be smaller than the dispersion coefficient V4 of the fourth lens, chromatic aberration of the optical imaging lens can be effectively corrected.

In the present embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT52 of the image side surface of the fifth lens satisfy the following conditions: 0.9< DT11/DT52<1.1. By controlling the ratio between the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT52 of the image side surface of the fifth lens, the spherical aberration and chromatic aberration of the system can be effectively corrected, and the spatial arrangement among the lenses is facilitated.

In the present embodiment, the minimum value DT of the maximum effective radius among the first through fifth lenses _MIN And the first lens to the first lensMaximum value DT of maximum effective radius of five lenses _MAX The method meets the following conditions: 0.2<DT _MIN /DT _MAX <0.5. By constraining DT _MIN /DT _MAX In a reasonable range, the incidence angle of the marginal ray at each lens can be effectively restrained, the marginal field aberration is corrected, and the energy of ghost images among the lenses is reduced. Preferably 0.2 <DT _MIN /DT _MAX <0.4。

In the present embodiment, an on-axis distance SAG21 between an intersection point of the object side surface of the second lens and the optical axis and an effective radius vertex of the object side surface of the second lens, an on-axis distance SAG22 between an intersection point of the image side surface of the second lens and the optical axis and an effective radius vertex of the image side surface of the second lens, an on-axis distance SAG31 between an intersection point of the object side surface of the third lens and the optical axis and an effective radius vertex of the object side surface of the third lens and an on-axis distance SAG32 between an intersection point of the image side surface of the third lens and an effective radius vertex of the image side surface of the third lens are as follows: 1< (SAG 22-SAG 31)/(SAG21+SAG32) <1.5. The conditional expression is satisfied, so that the curvature of the second lens and the third lens can be controlled, the overall sensitivity of the system can be reduced, and various aberrations of the system can be balanced. Preferably, 1.1< (SAG 22-SAG 31)/(SAG21+SAG32) <1.4.

In the present embodiment, an on-axis distance SAG12 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, an on-axis distance SAG22 between the intersection point of the image side surface of the second lens and the optical axis and the effective radius vertex of the image side surface of the second lens, and an on-axis distance SAG42 between the intersection point of the image side surface of the fourth lens and the optical axis and the effective radius vertex of the image side surface of the fourth lens satisfy: 0.8< SAG 42/(SAG12+SAG22) <1. The method meets the conditional expression, is beneficial to controlling the shape of each lens, improving the molding and assembly yield of the lenses, and is beneficial to weakening the ghost image generated between the surfaces of the system.

In this embodiment, the optical imaging lens distorts DIST at 0.8 field of view _0.8F The method meets the following conditions: i DIST _0.8F |<0.5%. Distortion DIST at 0.8 field of view by controlling optical imaging lens _0.8F The method is beneficial to controlling the shape and the size of the system distortion and ensuring the small distortion of the system. Preferably, |DIST _0.8F |<0.4％。

Example two

As shown in fig. 1 to 30, the optical imaging lens sequentially includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens along an object side of the optical imaging lens to an image side of the optical imaging lens, wherein the image side of the first lens is a concave surface; the second lens has positive optical power; the object side surface of the third lens is a convex surface; the fourth lens has positive focal power; the object side surface of the fifth lens is a convex surface, and the image side surface of the fifth lens is a concave surface; the on-axis distance TTL from the object side surface of the first lens element to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the aperture value Fno of the optical imaging lens satisfy: 1< TTL/ImgH/FNo <1.5; the effective focal length f of the optical imaging lens, the maximum half field angle Semi-FOV of the optical imaging lens and the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens satisfy the following conditions: 0.5< f tan (Semi-FOV)/TD <0.6.

In addition, by controlling the relationship between the on-axis distance TTL from the object side surface of the first lens to the imaging surface, half of the diagonal length of the effective pixel area on the imaging surface, imgH, and the aperture value FNo of the optical imaging lens, the system can be ensured to have a larger imaging surface and more light entering, and the miniaturization of the optical imaging lens can be realized as much as possible. By limiting f (Semi-FOV)/TD within a reasonable range, the optical size of the system can be reduced as much as possible while the angle of view of the system is ensured, thereby satisfying the miniaturization characteristic of the optical imaging lens.

In the present embodiment, the maximum half field angle Semi-FOV of the optical imaging lens satisfies: 60 ° < Semi-FOV <70 °. And by restraining the maximum half field angle Semi-FOV of the optical imaging lens, the information in a larger field range of the object side can be received. The optical imaging lens has the characteristics of wide angle, small distortion and miniaturization.

The on-axis distance TTL from the object side surface of the first lens element to the image plane and the on-axis distance TD from the object side surface of the first lens element to the image side surface of the fifth lens element satisfy: 1.2< TTL/TD <1.3. The ratio of the on-axis distance TTL from the object side surface of the first lens to the imaging surface to the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens is controlled within a reasonable range, so that the sufficient distance is reserved from the image side surface of the fifth lens to the imaging surface in the system, the rationality and the processability of structural arrangement are ensured, and in addition, the optical total length of the system is favorably controlled.

In the present embodiment, the minimum value DT of the maximum effective radius among the first through fifth lenses _MIN And a maximum value DT of maximum effective radii of the first lens to the fifth lens _MAX The method meets the following conditions: 0.2<DT _MIN /DT _MAX <0.5. By constraining DT _MIN /DT _MAX In a reasonable range, the incidence angle of the marginal ray at each lens can be effectively restrained, the marginal field aberration is corrected, and the energy of ghost images among the lenses is reduced. Preferably 0.2<DT _MIN /DT _MAX <0.4。

The optical imaging lens may optionally 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 in the present application may employ a plurality of lenses, for example, five lenses as described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial distance between each lens and the like of each lens, the aperture of the optical imaging lens can be effectively increased, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for portable electronic equipment such as smart phones and the like. The optical imaging lens also has the advantages of wide angle, small distortion, ultra-thin performance and good imaging quality, and can meet the miniaturization requirement of intelligent electronic products.

In 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.

However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although the description has been made by taking five lenses as an example in the embodiment, the optical imaging lens is not limited to include five lenses. The optical imaging lens may also include other numbers of lenses, if desired.

Examples of specific surface types and parameters applicable to the optical imaging lens of the above embodiment are further described below with reference to the drawings.

It should be noted that any of the following examples one to six is applicable to all embodiments of the present application.

Example one

As shown in fig. 1 to 5, an optical imaging lens of example one of the present application is described. Fig. 1 shows a schematic diagram of an optical imaging lens structure of example one.

As shown in fig. 1, the optical imaging lens sequentially includes, from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

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

In this example, the total effective focal length f of the optical imaging lens is 1.20mm, the maximum half field angle Semi-FOV of the optical imaging lens is 60.25 ° the total system length TTL of the optical imaging lens is 5.10mm and the image height ImgH is 2.00mm.

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

TABLE 1

In the first example, the object side surface and the image side surface of any one of the first lens element E1 to the fifth lens element E5 are aspheric, and the surface shape of each aspheric lens element can be defined by, but not limited to, the following aspheric 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 a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The following Table 2 shows the higher order coefficients A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30 that can be used for each of the aspherical mirrors S1-S10 in example one.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

2.0162E-01

-1.3085E-01

2.2875E-02

1.0509E-01

-1.3603E-01

4.0174E-02

7.3921E-02

S2

6.8800E-01

1.6237E+00

-7.2943E+01

1.6352E+03

-2.4354E+04

2.4962E+05

-1.7944E+06

S3

-1.0962E-01

1.3938E+00

-1.6640E+01

-4.7174E+02

1.7612E+04

-2.6958E+05

2.4819E+06

S4

2.0944E-01

-9.7695E+00

2.3264E+02

-2.9231E+03

2.3768E+04

-1.3527E+05

5.5801E+05

S5

-8.5441E-01

-5.0544E+00

1.0807E+02

-9.8658E+02

5.7928E+03

-2.3488E+04

6.6887E+04

S6

5.4384E-01

-8.4351E+00

6.1066E+01

-3.0062E+02

1.0794E+03

-2.8809E+03

5.7428E+03

S7

1.4726E+00

-5.9798E+00

1.8124E+01

-4.1507E+01

7.8972E+01

-1.4778E+02

2.8344E+02

S8

-4.6854E-01

7.3880E+00

-5.5360E+01

2.5435E+02

-7.9489E+02

1.7701E+03

-2.8732E+03

S9

-1.2664E+00

8.4229E+00

-4.9597E+01

1.8873E+02

-4.9230E+02

9.1632E+02

-1.2438E+03

S10

8.0682E-01

-3.8412E+00

9.1887E+00

-1.4045E+01

1.3535E+01

-6.7188E+00

-1.0581E+00

Face number

A18

A20

A22

A24

A26

A28

A30

S1

-1.0701E-01

7.2249E-02

-3.0040E-02

8.0752E-03

-1.3736E-03

1.3488E-04

-5.8380E-06

S2

9.1687E+06

-3.3440E+07

8.6384E+07

-1.5431E+08

1.8124E+08

-1.2587E+08

3.9167E+07

S3

-1.5182E+07

6.4060E+07

-1.8796E+08

3.7764E+08

-4.9636E+08

3.8501E+08

-1.3375E+08

S4

-1.6930E+06

3.7811E+06

-6.1413E+06

7.0520E+06

-5.4224E+06

2.5031E+06

-5.2414E+05

S5

-1.3259E+05

1.7517E+05

-1.3482E+05

2.5841E+04

5.2929E+04

-4.8291E+04

1.3470E+04

S6

-8.5323E+03

9.3699E+03

-7.4755E+03

4.1998E+03

-1.5706E+03

3.4995E+02

-3.5042E+01

S7

-4.7554E+02

6.0648E+02

-5.5125E+02

3.4346E+02

-1.3921E+02

3.3063E+01

-3.4927E+00

S8

3.4309E+03

-3.0084E+03

1.9115E+03

-8.5515E+02

2.5511E+02

-4.5497E+01

3.6659E+00

S9

1.2427E+03

-9.1275E+02

4.8663E+02

-1.8308E+02

4.6047E+01

-6.9426E+00

4.7417E-01

S10

4.4722E+00

-3.6366E+00

1.6859E+00

-4.9552E-01

9.1586E-02

-9.7536E-03

4.5775E-04

TABLE 2

Fig. 2 shows an on-axis chromatic aberration curve of the optical imaging lens of example one, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 3 shows a magnification chromatic aberration curve of the optical imaging lens of example one, which represents the deviation of different image heights on the imaging plane after the light passes through the optical imaging lens. Fig. 4 shows an astigmatism curve of the optical imaging lens of example one, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 5 shows a distortion curve of the optical imaging lens of example one, which represents distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 2 to 5, the optical imaging lens according to the example one can achieve good imaging quality.

Example two

As shown in fig. 6 to 10, an optical imaging lens of example two of the present application is described. In this example and the following examples, a description of portions similar to those of example one will be omitted for the sake of brevity. Fig. 6 is a schematic diagram showing the structure of an optical imaging lens of example two.

As shown in fig. 6, the optical imaging lens sequentially includes, from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

In this example, the total effective focal length f of the optical imaging lens is 1.21mm, the maximum half field angle Semi-FOV of the optical imaging lens is 61.28 ° the total system length TTL of the optical imaging lens is 5.10mm and the image height ImgH is 2.10mm.

Table 3 shows a basic structural parameter table of an optical imaging lens of example two, in which the units of radius of curvature, thickness/distance, focal length, and effective radius are all millimeters (mm).

TABLE 3 Table 3

Table 4 shows the higher order coefficients that can be used for each aspherical mirror in example two, where each aspherical surface profile can be defined by equation (1) given in example two above.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

1.9674E-01

-9.3170E-02

-1.2448E-01

4.5848E-01

-7.1001E-01

7.0313E-01

-4.8351E-01

S2

6.7459E-01

2.4344E+00

-9.0940E+01

1.8257E+03

-2.5023E+04

2.4209E+05

-1.6720E+06

S3

-9.7661E-02

4.7188E-01

2.7704E+01

-1.6976E+03

3.8847E+04

-5.1646E+05

4.4875E+06

S4

2.1406E-01

-9.9067E+00

2.3498E+02

-2.9520E+03

2.4027E+04

-1.3694E+05

5.6580E+05

S5

-8.5428E-01

-4.9494E+00

1.0567E+02

-9.6063E+02

5.6351E+03

-2.2950E+04

6.6224E+04

S6

5.4139E-01

-8.3645E+00

5.9916E+01

-2.8992E+02

1.0174E+03

-2.6454E+03

5.1342E+03

S7

1.4642E+00

-5.8555E+00

1.6841E+01

-3.2197E+01

3.1687E+01

1.9175E+01

-1.2880E+02

S8

-4.0934E-01

6.2078E+00

-4.5025E+01

2.0131E+02

-6.1608E+02

1.3506E+03

-2.1672E+03

S9

-1.2045E+00

7.2192E+00

-3.9533E+01

1.4064E+02

-3.4254E+02

5.9298E+02

-7.4451E+02

S10

7.8156E-01

-3.8108E+00

9.8642E+00

-1.7786E+01

2.3349E+01

-2.2564E+01

1.6105E+01

Face number

A18

A20

A22

A24

A26

A28

A30

S1

2.3683E-01

-8.2786E-02

2.0325E-02

-3.3754E-03

3.5225E-04

-1.9822E-05

3.9889E-07

S2

8.3001E+06

-2.9617E+07

7.5202E+07

-1.3248E+08

1.5384E+08

-1.0585E+08

3.2692E+07

S3

-2.6805E+07

1.1240E+08

-3.3114E+08

6.7228E+08

-8.9662E+08

7.0763E+08

-2.5058E+08

S4

-1.7198E+06

3.8492E+06

-6.2681E+06

7.2200E+06

-5.5722E+06

2.5835E+06

-5.4366E+05

S5

-1.3513E+05

1.9009E+05

-1.7198E+05

8.0596E+04

3.7125E+03

-2.3249E+04

7.9226E+03

S6

-7.4445E+03

8.0206E+03

-6.3305E+03

3.5596E+03

-1.3527E+03

3.1210E+02

-3.3106E+01

S7

2.4280E+02

-2.8030E+02

2.1904E+02

-1.1675E+02

4.0769E+01

-8.4124E+00

7.7680E-01

S8

2.5659E+03

-2.2356E+03

1.4135E+03

-6.2985E+02

1.8725E+02

-3.3290E+01

2.6744E+00

S9

6.8383E+02

-4.5892E+02

2.2229E+02

-7.5621E+01

1.7133E+01

-2.3208E+00

1.4222E-01

S10

-8.4842E+00

3.2785E+00

-9.1571E-01

1.7963E-01

-2.3452E-02

1.8287E-03

-6.4406E-05

TABLE 4 Table 4

Fig. 7 shows an on-axis chromatic aberration curve of the optical imaging lens of example two, which indicates the deviation of the converging focus of light rays of different wavelengths after passing through the optical imaging lens. Fig. 8 shows a magnification chromatic aberration curve of the optical imaging lens of example two, which represents the deviation of different image heights on the imaging plane after the light passes through the optical imaging lens. Fig. 9 shows an astigmatism curve of the optical imaging lens of example two, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10 shows a distortion curve of the optical imaging lens of example two, which represents distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 7 to fig. 10, the optical imaging lens provided in example two can achieve good imaging quality.

Example three

As shown in fig. 11 to 15, an optical imaging lens of example three of the present application is described. Fig. 11 shows a schematic diagram of an optical imaging lens structure of example three.

As shown in fig. 11, the optical imaging lens sequentially includes, from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

In this example, the total effective focal length f of the optical imaging lens is 1.21mm, the maximum half field angle Semi-FOV of the optical imaging lens is 63.70 ° the total system length TTL of the optical imaging lens is 5.10mm and the image height ImgH is 2.25mm.

Table 5 shows a basic structural parameter table of an optical imaging lens of example three, in which the units of radius of curvature, thickness/distance, focal length, and effective radius are all millimeters (mm).

TABLE 5

Table 6 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example three, where each of the aspherical surface types can be defined by the formula (1) given in example three above.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

1.9542E-01

-8.0867E-02

-1.8119E-01

6.1561E-01

-9.9731E-01

1.0669E+00

-8.1116E-01

S2

6.3725E-01

5.0213E+00

-1.7462E+02

3.3843E+03

-4.3465E+04

3.8859E+05

-2.4778E+06

S3

-7.9204E-02

-7.6014E-01

6.1650E+01

-2.1696E+03

4.2133E+04

-5.2259E+05

4.4165E+06

S4

2.2141E-01

-1.0390E+01

2.5017E+02

-3.2177E+03

2.6875E+04

-1.5703E+05

6.6322E+05

S5

-8.5416E-01

-4.7721E+00

9.8903E+01

-8.3982E+02

4.3411E+03

-1.3826E+04

2.1947E+04

S6

5.5366E-01

-8.7875E+00

6.6080E+01

-3.4151E+02

1.2969E+03

-3.6850E+03

7.8743E+03

S7

1.4620E+00

-5.8690E+00

1.7182E+01

-3.4648E+01

4.1471E+01

-6.6108E+00

-7.9845E+01

S8

-3.9048E-01

5.8290E+00

-4.1804E+01

1.8563E+02

-5.6680E+02

1.2444E+03

-2.0054E+03

S9

-1.1848E+00

6.7807E+00

-3.5773E+01

1.2260E+02

-2.8595E+02

4.6939E+02

-5.5151E+02

S10

7.6040E-01

-3.7532E+00

1.0099E+01

-1.9313E+01

2.7109E+01

-2.8032E+01

2.1369E+01

Face number

A18

A20

A22

A24

A26

A28

A30

S1

4.4946E-01

-1.8234E-01

5.3594E-02

-1.1104E-02

1.5367E-03

-1.2738E-04

4.7790E-06

S2

1.1410E+07

-3.8012E+07

9.0731E+07

-1.5124E+08

1.6718E+08

-1.1013E+08

3.2735E+07

S3

-2.6261E+07

1.1120E+08

-3.3388E+08

6.9487E+08

-9.5326E+08

7.7517E+08

-2.8294E+08

S4

-2.0528E+06

4.6592E+06

-7.6640E+06

8.8872E+06

-6.8861E+06

3.1987E+06

-6.7341E+05

S5

1.6026E+04

-1.7555E+05

4.5062E+05

-6.4849E+05

5.6219E+05

-2.7504E+05

5.8559E+04

S6

-1.2640E+04

1.5126E+04

-1.3275E+04

8.2860E+03

-3.4803E+03

8.8133E+02

-1.0163E+02

S7

1.7289E+02

-2.0459E+02

1.5809E+02

-8.1727E+01

2.7317E+01

-5.3368E+00

4.6167E-01

S8

2.3891E+03

-2.0973E+03

1.3372E+03

-6.0117E+02

1.8037E+02

-3.2372E+01

2.6259E+00

S9

4.6611E+02

-2.8162E+02

1.1929E+02

-3.4058E+01

6.0829E+00

-5.8248E-01

1.9752E-02

S10

-1.1995E+01

4.9289E+00

-1.4615E+00

3.0398E-01

-4.2032E-02

3.4676E-03

-1.2908E-04

TABLE 6

Fig. 12 shows an on-axis chromatic aberration curve of the optical imaging lens of example three, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the optical imaging lens. Fig. 13 shows a magnification chromatic aberration curve of the optical imaging lens of example three, which represents the deviation of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 14 shows an astigmatism curve of the optical imaging lens of example three, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 15 shows a distortion curve of the optical imaging lens of example three, which represents distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 12 to 15, the optical imaging lens given in example three can achieve good imaging quality.

Example four

As shown in fig. 16 to 20, an optical imaging lens of example four of the present application is described. Fig. 16 shows a schematic diagram of an optical imaging lens structure of example four.

As shown in fig. 16, the optical imaging lens sequentially includes, from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

In this example, the total effective focal length f of the optical imaging lens is 1.17mm, the maximum half field angle Semi-FOV of the optical imaging lens is 63.39 ° the total system length TTL of the optical imaging lens is 5.19mm and the image height ImgH is 2.20mm.

Table 7 shows a basic structural parameter table of an optical imaging lens of example four, in which the units of radius of curvature, thickness/distance, focal length, and effective radius are all millimeters (mm).

TABLE 7

Table 8 shows the higher order coefficients that can be used for each aspherical mirror in example four, where each aspherical surface profile can be defined by equation (1) given in example four above.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

2.0567E-01

-1.4657E-01

6.7323E-02

3.4206E-02

-8.7651E-02

6.9876E-02

-2.5272E-02

S2

7.9808E-01

-5.8030E+00

1.3879E+02

-2.3387E+03

2.6907E+04

-2.1634E+05

1.2408E+06

S3

-1.2468E-01

1.8413E+00

-4.7967E+01

6.4716E+02

-4.4724E+03

-3.8741E+03

4.0857E+05

S4

2.0087E-02

-2.7189E+00

1.1712E+02

-1.6956E+03

1.4380E+04

-8.1907E+04

3.3061E+05

S5

-1.1151E+00

6.9715E-01

3.6260E+01

-3.7843E+02

2.1131E+03

-7.3659E+03

1.5720E+04

S6

5.0436E-01

-8.3251E+00

6.4397E+01

-3.3562E+02

1.2606E+03

-3.4920E+03

7.2057E+03

S7

1.5990E+00

-7.6260E+00

2.9687E+01

-9.2022E+01

2.2158E+02

-4.0722E+02

5.6449E+02

S8

-1.8005E-01

3.3932E+00

-2.9221E+01

1.4629E+02

-4.8320E+02

1.1153E+03

-1.8523E+03

S9

-7.5395E-01

3.0828E+00

-2.1375E+01

8.5215E+01

-2.1080E+02

3.4385E+02

-3.7836E+02

S10

1.2955E+00

-7.8460E+00

2.5384E+01

-5.4571E+01

8.1608E+01

-8.6871E+01

6.6799E+01

Face number

A18

A20

A22

A24

A26

A28

A30

S1

-1.5455E-03

6.2456E-03

-3.2144E-03

8.9368E-04

-1.4780E-04

1.3721E-05

-5.5335E-07

S2

-5.1286E+06

1.5281E+07

-3.2454E+07

4.7817E+07

-4.6337E+07

2.6488E+07

-6.7448E+06

S3

-4.3650E+06

2.6148E+07

-1.0083E+08

2.5561E+08

-4.1295E+08

3.8622E+08

-1.5935E+08

S4

-9.6828E+05

2.0702E+06

-3.2029E+06

3.4940E+06

-2.5491E+06

1.1162E+06

-2.2173E+05

S5

-1.6039E+04

-1.1189E+04

6.4969E+04

-1.0376E+05

8.9200E+04

-4.1593E+04

8.2827E+03

S6

-1.1104E+04

1.2715E+04

-1.0657E+04

6.3466E+03

-2.5422E+03

6.1385E+02

-6.7492E+01

S7

-5.8370E+02

4.4373E+02

-2.4245E+02

9.1749E+01

-2.2551E+01

3.1818E+00

-1.8977E-01

S8

2.2434E+03

-1.9837E+03

1.2665E+03

-5.6825E+02

1.6990E+02

-3.0380E+01

2.4571E+00

S9

2.7839E+02

-1.2914E+02

2.9928E+01

2.3152E+00

-3.6351E+00

9.4693E-01

-8.7595E-02

S10

-3.7373E+01

1.5195E+01

-4.4365E+00

9.0540E-01

-1.2251E-01

9.8686E-03

-3.5804E-04

TABLE 8

Fig. 17 shows an on-axis chromatic aberration curve of the optical imaging lens of example four, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the optical imaging lens. Fig. 18 shows a magnification chromatic aberration curve of the optical imaging lens of example four, which represents deviations of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 19 shows an astigmatism curve of the optical imaging lens of example four, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 20 shows a distortion curve of the optical imaging lens of example four, which represents distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 17 to 20, the optical imaging lens provided in example four can achieve good imaging quality.

Example five

As shown in fig. 21 to 25, an optical imaging lens of example five of the present application is described. Fig. 21 shows a schematic diagram of an optical imaging lens structure of example five.

As shown in fig. 21, the optical imaging lens sequentially includes, from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

In this example, the total effective focal length f of the optical imaging lens is 1.16mm, the maximum half field angle Semi-FOV of the optical imaging lens is 63.81 ° the total system length TTL of the optical imaging lens is 5.15mm and the image height ImgH is 2.20mm.

Table 9 shows a basic structural parameter table of an optical imaging lens of example five, in which the units of radius of curvature, thickness/distance, focal length, and effective radius are all millimeters (mm).

TABLE 9

Table 10 shows the higher order coefficients that can be used for each aspherical mirror in example five, where each aspherical surface profile can be defined by equation (1) given in example five above.

Table 10

Fig. 22 shows an on-axis chromatic aberration curve of the optical imaging lens of example five, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the optical imaging lens. Fig. 23 shows a magnification chromatic aberration curve of the optical imaging lens of example five, which represents deviations of different image heights on an imaging plane after light passes through the optical imaging lens. Fig. 24 shows an astigmatism curve of the optical imaging lens of example five, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 25 shows a distortion curve of the optical imaging lens of example five, which represents distortion magnitude values corresponding to different angles of view.

As can be seen from fig. 22 to 25, the optical imaging lens given in example five can achieve good imaging quality.

Example six

As shown in fig. 26 to 30, an optical imaging lens of example six of the present application is described. Fig. 26 shows a schematic diagram of an optical imaging lens structure of example six.

As shown in fig. 26, the optical imaging lens sequentially includes, from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a filter E6, and an imaging surface S13.

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

In this example, the total effective focal length f of the optical imaging lens is 1.29mm, the maximum half field angle Semi-FOV of the optical imaging lens is 60.40 ° the total system length TTL of the optical imaging lens is 5.03mm and the image height ImgH is 2.18mm.

Table 11 shows a basic structural parameter table of an optical imaging lens of example six, in which the units of radius of curvature, thickness/distance, focal length, and effective radius are all millimeters (mm).

TABLE 11

Table 12 shows the higher order coefficients that can be used for each aspherical mirror in example six, where each aspherical surface profile can be defined by equation (1) given in example six above.

Face number

A4

A6

A8

A10

A12

A14

A16

S1

2.7287E-01

-2.3779E-01

1.6440E-01

-1.3388E-02

-1.2640E-01

1.6725E-01

-1.1952E-01

S2

6.9272E-01

-1.0666E+00

6.6424E+00

-3.4654E+01

8.6501E+01

3.0593E+02

-3.1934E+03

S3

7.6972E-02

-8.5843E+00

2.8411E+02

-5.7569E+03

7.3015E+04

-5.9296E+05

3.0733E+06

S4

1.6555E-01

-4.1516E+00

8.8595E+01

-8.5383E+02

4.7661E+03

-1.6985E+04

3.9545E+04

S5

-9.7876E-01

-3.4464E+00

8.6538E+01

-7.0488E+02

3.4279E+03

-1.1101E+04

2.4667E+04

S6

7.2498E-01

-1.1830E+01

9.2218E+01

-4.6758E+02

1.6623E+03

-4.2738E+03

8.0447E+03

S7

1.4757E+00

-7.0219E+00

2.0625E+01

-1.2482E+01

-1.7754E+02

8.9546E+02

-2.3902E+03

S8

-1.8359E-01

1.3400E+00

-8.8834E+00

3.3155E+01

-6.9501E+01

6.4058E+01

6.2010E+01

S9

-4.7668E-01

1.0574E+00

-7.2121E+00

2.5319E+01

-5.3931E+01

7.7523E+01

-7.8918E+01

S10

6.7681E-01

-3.2156E+00

7.2104E+00

-1.0193E+01

9.4078E+00

-5.3652E+00

1.3267E+00

Face number

A18

A20

A22

A24

A26

A28

A30

S1

5.4785E-02

-1.6523E-02

3.1793E-03

-3.5430E-04

1.7402E-05

0.0000E+00

S2

1.1367E+04

-2.1338E+04

2.1013E+04

-8.5241E+03

0.0000E+00

S3

-9.8204E+06

1.7613E+07

-1.3557E+07

0.0000E+00

S4

-5.9136E+04

5.3342E+04

-2.4975E+04

3.9400E+03

0.0000E+00

S5

-3.7454E+04

3.7412E+04

-2.2327E+04

6.0739E+03

0.0000E+00

S6

-1.1084E+04

1.1040E+04

-7.7282E+03

3.5980E+03

-9.9494E+02

1.2065E+02

1.3184E+00

S7

4.2161E+03

-5.1907E+03

4.5027E+03

-2.7045E+03

1.0722E+03

-2.5257E+02

2.6788E+01

S8

-2.9389E+02

4.7132E+02

-4.5061E+02

2.7730E+02

-1.0813E+02

2.4392E+01

-2.4296E+00

S9

5.8073E+01

-3.0993E+01

1.1860E+01

-3.1612E+00

5.5488E-01

-5.7311E-02

2.6181E-03

S10

5.4846E-01

-6.7723E-01

3.1750E-01

-8.7655E-02

1.4837E-02

-1.4313E-03

6.0527E-05

Table 12

Fig. 27 shows an on-axis chromatic aberration curve of the optical imaging lens of example six, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the optical imaging lens. Fig. 28 shows a magnification chromatic aberration curve of the optical imaging lens of example six, which represents deviations of different image heights on the imaging plane after light passes through the optical imaging lens. Fig. 29 shows an astigmatism curve of the optical imaging lens of example six, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 30 shows a distortion curve of the optical imaging lens of example six, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 27 to 30, the optical imaging lens given in example six can achieve good imaging quality.

In summary, examples one to six satisfy the relationships shown in table 13, respectively.

Condition/example	1	2	3	4	5	6
							TTL/ImgH/Fno	1.42	1.28	1.19	1.28	1.06	1.17
f*tan(Semi-FOV)/TD	0.51	0.53	0.59	0.55	0.56	0.57
							TTL/TD	1.23	1.24	1.24	1.22	1.22	1.26
f/ImgH	0.60	0.58	0.54	0.53	0.53	0.59
							SD/TD	0.66	0.67	0.67	0.66	0.66	0.67
\|f1/f-f3/f\|	0.16	0.17	0.18	0.26	0.20	0.55
							f2/f	0.97	0.97	0.97	1.01	1.01	0.89
f2/(R3+R4)	0.64	0.64	0.64	0.66	0.65	0.55
							(R9-R10)/(R9+R10)	0.20	0.20	0.20	0.19	0.19	0.09
T12/∑AT	0.80	0.80	0.80	0.83	0.83	0.73
							\|CT1-CT2\|/\|CT3-CT5\|	0.10	0.10	0.11	0.14	0.02	0.48
CT1/CT2	0.99	0.99	0.99	1.01	1.00	0.92
							∑AT/BFL	0.78	0.77	0.76	0.81	0.79	0.76
CT1/ET1	1.16	1.19	1.21	1.30	1.34	1.15
							ET4/(ET2+ET3)	0.37	0.37	0.35	0.36	0.35	0.33
V3+V5	39.60	39.60	39.60	39.60	39.60	39.60
							DT11/DT52	1.05	1.03	0.98	1.03	1.02	0.95
DT _MIN /DT _MAX	0.34	0.34	0.33	0.30	0.29	0.27
							(SAG22-SAG31)/(SAG21+SAG32)	1.14	1.13	1.11	1.16	1.16	1.35
SAG42/(SAG12+SAG22)	0.98	0.98	0.95	0.89	0.91	0.90

TABLE 13

Table 14 shows the effective focal lengths f of the optical imaging lenses of examples one to six, and the effective focal lengths f1 to f5 of the respective lenses.

Example parameters	1	2	3	4	5	6
							f1(mm)	-2.51	-2.51	-2.51	-2.48	-2.48	-2.80
f2(mm)	1.17	1.17	1.17	1.18	1.17	1.15
							f3(mm)	-2.70	-2.72	-2.72	-2.79	-2.72	-2.08
f4(mm)	1.78	1.78	1.79	1.81	1.78	2.81
							f5(mm)	-4.06	-4.10	-4.14	-4.16	-4.30	344.66
f(mm)	1.20	1.21	1.21	1.17	1.16	1.29
							TTL(mm)	5.10	5.10	5.10	5.19	5.15	5.03
ImgH(mm)	2.00	2.10	2.25	2.20	2.20	2.18
							Semi-FOV(°)	60.25	61.28	63.70	63.39	63.81	60.40
\|DIST _0.8F \|	0.13％	0.09％	0.14％	0.39％	0.33％	0.03％

TABLE 14

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

It will be apparent that the embodiments described above are merely some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An optical imaging lens, characterized by comprising, in order from an object side of the optical imaging lens to an image side of the optical imaging lens:

a first lens, wherein an image side surface of the first lens is a concave surface;

a second lens having positive optical power;

the object side surface of the third lens is a convex surface;

a fourth lens having positive optical power;

A fifth lens element with a convex object-side surface and a concave image-side surface;

the optical imaging lens includes only five lenses of the first lens to the fifth lens;

the on-axis distance TTL from the object side surface of the first lens to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the aperture value Fno of the optical imaging lens satisfy: 1< TTL/ImgH/FNo <1.5; the maximum half field angle Semi-FOV of the optical imaging lens meets the following conditions: 60 ° < Semi-FOV <70 °; the effective focal length f of the optical imaging lens, the maximum half field angle Semi-FOV of the optical imaging lens and the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens satisfy the following conditions: 0.5< f tan (Semi-FOV)/TD <0.6.

2. The optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens and a half of a diagonal length ImgH of an effective pixel region on the imaging surface satisfy: 0.5< f/ImgH <0.7.

3. The optical imaging lens of claim 1, wherein a distance SD between a stop and an image side of the fifth lens and an on-axis distance TD between an object side of the first lens and an image side of the fifth lens satisfy: 0.6< SD/TD <0.7.

4. The optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens, an effective focal length f1 of the first lens, and an effective focal length f3 of the third lens satisfy: i f1/f-f3/f <0.6.

5. The optical imaging lens of claim 1, wherein an effective focal length f of the optical imaging lens and an effective focal length f2 of the second lens satisfy: 0.8< f2/f <1.1.

6. The optical imaging lens as claimed in claim 1, wherein an effective focal length f2 of the second lens, a radius of curvature R3 of an object side surface of the second lens, and a radius of curvature R4 of an image side surface of the second lens satisfy: 0.5< f 2/(R3+R4) <0.7.

7. The optical imaging lens of claim 1, wherein a radius of curvature R9 of an object side surface of the fifth lens and a radius of curvature R10 of an image side surface of the fifth lens satisfy: 0< (R9-R10)/(R9+R10) <0.3.

8. The optical imaging lens according to claim 1, wherein an air interval T12 on an optical axis between the first lens and the second lens and a sum Σat of air intervals on the optical axis between adjacent two lenses of the first lens to the fifth lens satisfy: 0.7< T12/ΣAT.

9. The optical imaging lens according to claim 1, wherein a thickness CT1 of the first lens on an optical axis, a thickness CT2 of the second lens on the optical axis, a thickness CT3 of the third lens on the optical axis, and a thickness CT5 of the fifth lens on the optical axis satisfy: CT1-CT 2/CT 3-CT5 <0.5.

10. The optical imaging lens according to claim 1, wherein a thickness CT1 of the first lens on an optical axis and a thickness CT2 of the second lens on the optical axis satisfy: 0.9< CT1/CT2<1.1.

11. The optical imaging lens as claimed in claim 1, wherein a sum Σat of air intervals on an optical axis between adjacent two lenses of the first to fifth lenses and an on-axis distance BFL from an image side surface of the fifth lens to the imaging surface satisfy: 0.7< ΣAT/BFL <0.9.

12. The optical imaging lens according to claim 1, wherein a thickness CT1 of the first lens on the optical axis and an edge thickness ET1 of the first lens satisfy: 1< CT1/ET1<1.5.

13. The optical imaging lens of claim 1, wherein an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, and an edge thickness ET4 of the fourth lens satisfy: 0.3< ET4/(ET 2+ ET 3) <0.4.

14. The optical imaging lens according to claim 1, wherein a chromatic dispersion coefficient V3 of the third lens, a chromatic dispersion coefficient V4 of the fourth lens, and a chromatic dispersion coefficient V5 of the fifth lens satisfy: v3+v5< V4.

15. The optical imaging lens of claim 1, wherein a maximum effective radius DT11 of an object side surface of the first lens and a maximum effective radius DT52 of an image side surface of the fifth lens satisfy: 0.9< DT11/DT52<1.1.

16. The optical imaging lens as claimed in claim 1, wherein a minimum value DT of maximum effective radii among the first to fifth lenses _MIN And a maximum value DT of the maximum effective radius of the first to fifth lenses _MAX The method meets the following conditions: 0.2<DT _MIN /DT _MAX <0.5。

17. The optical imaging lens according to claim 1, wherein an on-axis distance SAG21 between an intersection of the object side surface of the second lens and the optical axis and an effective radius vertex of the object side surface of the second lens, an on-axis distance SAG22 between an intersection of the image side surface of the second lens and the optical axis and an effective radius vertex of the image side surface of the second lens, an on-axis distance SAG31 between an intersection of the object side surface of the third lens and the optical axis and an effective radius vertex of the object side surface of the third lens and an on-axis distance SAG32 between an intersection of the image side surface of the third lens and the optical axis and an effective radius vertex of the image side surface of the third lens satisfy: 1< (SAG 22-SAG 31)/(SAG21+SAG32) <1.5.

18. The optical imaging lens according to claim 1, wherein an on-axis distance SAG12 between an intersection point of the image side surface of the first lens and the optical axis and an effective radius vertex of the image side surface of the first lens, an on-axis distance SAG22 between an intersection point of the image side surface of the second lens and the optical axis and an effective radius vertex of the image side surface of the second lens and an on-axis distance SAG42 between an intersection point of the image side surface of the fourth lens and the optical axis and an effective radius vertex of the image side surface of the fourth lens satisfy: 0.8< SAG 42/(SAG12+SAG22) <1.

19. The optical imaging lens of claim 1, wherein the optical imaging lens has a distortion DIST at a 0.8 field of view _0.8F The method meets the following conditions: i DIST _0.8F |<0.5％。

20. An optical imaging lens, characterized by comprising, in order from an object side of the optical imaging lens to an image side of the optical imaging lens:

a second lens having positive optical power;

the object side surface of the third lens is a convex surface;

a fourth lens having positive optical power;

the on-axis distance TTL from the object side surface of the first lens to the imaging surface, half of the diagonal length ImgH of the effective pixel area on the imaging surface, and the aperture value Fno of the optical imaging lens satisfy: 1< TTL/ImgH/FNo <1.5; the effective focal length f of the optical imaging lens, the maximum half field angle Semi-FOV of the optical imaging lens and the on-axis distance TD from the object side surface of the first lens to the image side surface of the fifth lens satisfy the following conditions: 0.5< f tan (Semi-FOV)/TD <0.6.

21. The optical imaging lens of claim 20, wherein a maximum half field angle Semi-FOV of the optical imaging lens satisfies: 60 ° < Semi-FOV <70 °; an on-axis distance TTL from the object side surface of the first lens element to the imaging surface and an on-axis distance TD from the object side surface of the first lens element to the image side surface of the fifth lens element satisfy: 1.2< TTL/TD <1.3.

22. The optical imaging lens of claim 20, wherein an effective focal length f of the optical imaging lens and a half of a diagonal length ImgH of an effective pixel region on the imaging surface satisfy: 0.5< f/ImgH <0.7.

23. The optical imaging lens of claim 20, wherein a distance SD between a stop and an image side of the fifth lens and an on-axis distance TD between an object side of the first lens and an image side of the fifth lens satisfy: 0.6< SD/TD <0.7.

24. The optical imaging lens of claim 20, wherein an effective focal length f of the optical imaging lens, an effective focal length f1 of the first lens, and an effective focal length f3 of the third lens satisfy: i f1/f-f3/f <0.6.

25. The optical imaging lens of claim 20, wherein an effective focal length f of the optical imaging lens and an effective focal length f2 of the second lens satisfy: 0.8< f2/f <1.1.

26. The optical imaging lens of claim 20, wherein an effective focal length f2 of the second lens, a radius of curvature R3 of an object-side surface of the second lens, and a radius of curvature R4 of an image-side surface of the second lens satisfy: 0.5< f 2/(R3+R4) <0.7.

27. The optical imaging lens of claim 20, wherein a radius of curvature R9 of an object-side surface of the fifth lens and a radius of curvature R10 of an image-side surface of the fifth lens satisfy: 0< (R9-R10)/(R9+R10) <0.3.

28. The optical imaging lens according to claim 20, wherein an air interval T12 on an optical axis between the first lens and the second lens and a sum Σat of air intervals on the optical axis between adjacent two lenses of the first lens to the fifth lens satisfy: 0.7< T12/ΣAT.

29. The optical imaging lens according to claim 20, wherein a thickness CT1 of the first lens on an optical axis, a thickness CT2 of the second lens on the optical axis, a thickness CT3 of the third lens on the optical axis, and a thickness CT5 of the fifth lens on the optical axis satisfy: CT1-CT 2/CT 3-CT5 <0.5.

30. The optical imaging lens of claim 20, wherein a thickness CT1 of the first lens on an optical axis and a thickness CT2 of the second lens on the optical axis satisfy: 0.9< CT1/CT2<1.1.

31. The optical imaging lens as claimed in claim 20, wherein a sum Σat of air intervals on an optical axis between adjacent two lenses of the first to fifth lenses and an on-axis distance BFL from an image side surface of the fifth lens to the imaging surface satisfy: 0.7< ΣAT/BFL <0.9.

32. The optical imaging lens of claim 20, wherein a thickness CT1 of the first lens on the optical axis and an edge thickness ET1 of the first lens satisfy: 1< CT1/ET1<1.5.

33. The optical imaging lens of claim 20, wherein between an edge thickness ET2 of the second lens, an edge thickness ET3 of the third lens, and an edge thickness ET4 of the fourth lens: 0.3< ET4/(ET 2+ ET 3) <0.4.

34. The optical imaging lens of claim 20, wherein a chromatic dispersion coefficient V3 of the third lens, a chromatic dispersion coefficient V4 of the fourth lens, and a chromatic dispersion coefficient V5 of the fifth lens satisfy: v3+v5< V4.

35. The optical imaging lens of claim 20, wherein a maximum effective radius DT11 of an object-side surface of the first lens and a maximum effective radius DT52 of an image-side surface of the fifth lens satisfy: 0.9< DT11/DT52<1.1.

36. The optical imaging lens of claim 20, wherein a minimum value DT of maximum effective radii of the first to fifth lenses _MIN And a maximum value DT of the maximum effective radius of the first to fifth lenses _MAX The method meets the following conditions: 0.2<DT _MIN /DT _MAX <0.5。

37. The optical imaging lens of claim 20, wherein an on-axis distance SAG21 between an intersection of the object side surface of the second lens and the optical axis and an effective radius vertex of the object side surface of the second lens, an on-axis distance SAG22 between an intersection of the image side surface of the second lens and the optical axis and an effective radius vertex of the image side surface of the second lens, an on-axis distance SAG31 between an intersection of the object side surface of the third lens and the optical axis and an effective radius vertex of the object side surface of the third lens and an on-axis distance SAG32 between an intersection of the image side surface of the third lens and the optical axis and an effective radius vertex of the image side surface of the third lens are: 1< (SAG 22-SAG 31)/(SAG21+SAG32) <1.5.

38. The optical imaging lens of claim 20, wherein an on-axis distance SAG12 between an intersection of an image side surface of the first lens and an optical axis to an effective radius vertex of the image side surface of the first lens, an on-axis distance SAG22 between an intersection of an image side surface of the second lens and the optical axis to an effective radius vertex of the image side surface of the second lens, and an on-axis distance SAG42 between an intersection of an image side surface of the fourth lens and the optical axis to an effective radius vertex of the image side surface of the fourth lens satisfy: 0.8< SAG 42/(SAG12+SAG22) <1.

39. The optical imaging lens of claim 20, wherein the optical imaging lens has a distortion DIST at a 0.8 field of view _0.8F The method meets the following conditions: i DIST _0.8F |<0.5％。