CN217213309U

CN217213309U - Camera lens

Info

Publication number: CN217213309U
Application number: CN202220504310.7U
Authority: CN
Inventors: 王彦; 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: 2022-03-08
Filing date: 2022-03-08
Publication date: 2022-08-16
Anticipated expiration: 2032-03-08

Abstract

The utility model provides a camera lens, include: the first lens has positive refractive power, and the object side surface of the first lens is in a convex shape; the image side surface of the first lens is concave; the second lens has positive refractive power, the object side surface of the second lens is concave, and the image side surface of the second lens is convex; the third lens has refractive power, the object side surface of the third lens is convex, and the image side surface of the third lens is concave; the fourth lens has positive refractive power, the object side surface of the fourth lens is concave, and the image side surface of the fourth lens is convex; the fifth lens has negative refractive power, the object side surface of the fifth lens is in a convex shape, and the image side surface of the fifth lens is in a concave shape; the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens satisfy the following conditions: 1.5< f12/f34< 3.0; the maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <120 °. The utility model provides an among the prior art camera lens exist to be difficult to compromise miniaturized and wide-angle problem.

Description

Camera lens

Technical Field

The utility model relates to an optical imaging equipment technical field particularly, relates to a camera lens.

Background

With the development of scientific technology, the demand of users on mobile terminals is higher and higher, and the front-facing camera carried on the mobile terminal needs to meet the functions of video communication, face recognition and the like, and meanwhile, as the mobile terminal is developed towards the portable direction, the thickness of the mobile terminal becomes thinner and thinner, so that the lens needs to be more miniaturized, and meanwhile, the wide-angle characteristic needs to be met, but the current lens is difficult to meet.

That is, the imaging lens in the prior art has the problem that it is difficult to achieve both miniaturization and wide angle.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a camera lens to solve the problem that the camera lens in the prior art is difficult to take into account miniaturization and wide angle.

In order to achieve the above object, according to an aspect of the present invention, there is provided an imaging lens including, from a light incident side to a light exit side: a first lens having a positive refractive power, an object side surface of the first lens being convex; the image side surface of the first lens is concave; a second lens having a positive refractive power, the object side surface of the second lens being concave, the image side surface of the second lens being convex; a third lens having a refractive power, the object side surface of the third lens being convex, the image side surface of the third lens being concave; a fourth lens having positive refractive power, an object side surface of the fourth lens being concave, an image side surface of the fourth lens being convex; a fifth lens having negative refractive power, an object side surface of the fifth lens being convex, an image side surface of the fifth lens being concave; the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens satisfy the following conditions: 1.5< f12/f34< 3.0; the maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <120 °.

Further, the effective focal length f1 of the first lens, the curvature radius R1 of the object side surface of the first lens and the curvature radius R2 of the image side surface of the first lens satisfy: 1.2< f1/(R1+ R2) < 2.7.

Further, the effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy the following condition: 1.2< (f2+ f4)/(f2-f4) < 2.9.

Further, the effective focal length f5 of the fifth lens, 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 0.4< f5/(R10-R9) < 1.5.

Further, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: 0.8< (R3+ R4)/(R3-R4) < 2.5.

Further, the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R6 of the image-side surface of the third lens satisfy: 0.8< R5/R6< 1.8.

Further, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy: 2.4< R7/R8< 3.7.

Further, the effective half aperture DT52 of the image side surface of the fifth lens, the effective half aperture DT12 of the image side surface of the first lens and the effective half aperture DT32 of the image side surface of the third lens satisfy: 1.1< DT52/(DT12+ DT32) < 1.6.

Further, an on-axis distance SAG22 from an intersection point of the image side surface of the second lens and the optical axis of the imaging lens to an effective radius vertex of the image side surface of the second lens, an on-axis distance SAG41 from an intersection point of the object side surface of the fourth lens and the optical axis to an effective radius vertex of the object side surface of the fourth lens, and an on-axis distance SAG42 from an intersection point of the 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: 1.2< SAG42/(SAG22+ SAG41) < 2.6.

Further, the center thickness CT4 of the fourth lens on the optical axis of the imaging lens, the center thickness CT5 of the fifth lens on the optical axis, the edge thickness ET4 of the fourth lens, and the edge thickness ET5 of the fifth lens satisfy: 3.5< CT4/ET4+ ET5/CT5< 4.6.

According to the utility model discloses an on the other hand provides a camera lens, includes by going into light side to light-emitting side: a first lens having a positive refractive power, an object side surface of the first lens being convex; the image side surface of the first lens is concave; a second lens having a positive refractive power, the object side surface of the second lens being concave, the image side surface of the second lens being convex; a third lens having a refractive power, the object side surface of the third lens being convex, the image side surface of the third lens being concave; a fourth lens having positive refractive power, an object side surface of the fourth lens being concave, an image side surface of the fourth lens being convex; a fifth lens having negative refractive power, an object side surface of the fifth lens being convex, an image side surface of the fifth lens being concave; the effective half-aperture DT52 of the image side surface of the fifth lens, the effective half-aperture DT12 of the image side surface of the first lens and the effective half-aperture DT32 of the image side surface of the third lens satisfy the following conditions: 1.1< DT52/(DT12+ DT32) < 1.6; the maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <120 °.

Further, the effective focal length f5 of the fifth lens, 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: 0.4< f5/(R10-R9) < 1.5.

Use the technical scheme of the utility model, camera lens includes by going into light side to light-emitting side: the lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens. The first lens has positive refractive power, and the object side surface of the first lens is in a convex shape; the image side surface of the first lens is concave; the second lens has positive refractive power, the object side surface of the second lens is concave, and the image side surface of the second lens is convex; the third lens has refractive power, the object side surface of the third lens is convex, and the image side surface of the third lens is concave; the fourth lens has positive refractive power, the object side surface of the fourth lens is concave, and the image side surface of the fourth lens is convex; the fifth lens has negative refractive power, the object side surface of the fifth lens is in a convex shape, and the image side surface of the fifth lens is in a concave shape; the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens satisfy the following conditions: 1.5< f12/f34< 3.0; the maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <120 °.

By distributing the refractive power of part of the lenses of the camera lens and designing the surface type of the lenses, the low-order aberration of the camera lens can be effectively balanced, the sensitivity of the tolerance of the camera lens can be reduced, and the imaging quality of the camera lens is ensured while the miniaturization of the camera lens is kept. By controlling the ratio of the composite focal length of the first lens and the second lens to the composite focal length of the third lens and the fourth lens, the effective focal length in the camera lens can be reasonably distributed, the sensitivity of the camera lens is reduced, and the imaging quality of the camera lens is ensured. By controlling the FOV within a reasonable range, the camera lens can be ensured to have a larger field angle, the ultra-wide angle of the camera lens is ensured, and the optical camera lens can simultaneously take into consideration miniaturization and wide angle.

Drawings

The accompanying drawings, which form a part of the present application, 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 and not to limit the invention. In the drawings:

fig. 1 is a schematic view showing a configuration of an imaging lens according to a first example of the present invention;

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

fig. 6 is a schematic structural view of an imaging lens according to a second example of the present invention;

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

fig. 11 is a schematic structural view of an imaging lens according to a third example of the present invention;

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

fig. 16 is a schematic view showing a configuration of an imaging lens according to a fourth example of the present invention;

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

fig. 21 is a schematic view showing a configuration of an imaging lens according to a fifth example of the present invention;

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

fig. 26 is a schematic structural view of an imaging lens according to a sixth example of the present invention;

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

Wherein the figures include the following reference numerals:

e1, a first lens; s1, the object side surface of the first lens; s2, the image side surface of the first lens; e2, a second lens; s3, an object side surface of the second lens; s4, an image side surface of the second lens; e3, third lens; s5, the object side surface of the third lens; s6, the image side surface of the third lens; e4, fourth lens; s7, the object side surface of the fourth lens; s8, the image side surface of the fourth lens; e5, fifth lens; s9, the object side surface of the fifth lens; s10, the image side surface of the fifth lens; e6, a filter plate; s11, the object side surface of the filter plate; s12, the image side surface of the filter plate; and S13, imaging surface.

Detailed Description

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 invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is to be noted that, unless otherwise indicated, 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.

In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.

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, 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 the 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, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave locations are not defined, it means that the lens surface is concave at least in the paraxial region. The determination of the surface shape in the paraxial region can be made by determining whether or not the surface shape is concave or convex using an R value (R denotes a radius of curvature of the paraxial region, and usually denotes an R value in a lens database (lens data) in optical software) according to a determination method by a person ordinarily skilled in the art. When the R value is positive, the object side is judged to be convex, and when the R value is negative, the object side is judged to be concave; when the R value is positive, the image side surface is determined to be concave, and when the R value is negative, the image side surface is determined to be convex.

In order to solve the problem that camera lens exists and is difficult to compromise miniaturization and wide angle among the prior art, the utility model provides a camera lens.

Example one

As shown in fig. 1 to fig. 30, the camera lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the light incident side to the light emergent side. The first lens has positive refractive power, and the object side surface of the first lens is in a convex shape; the image side surface of the first lens is concave; the second lens has positive refractive power, the object side surface of the second lens is concave, and the image side surface of the second lens is convex; the third lens has refractive power, the object side surface of the third lens is convex, and the image side surface of the third lens is concave; the fourth lens has positive refractive power, the object side surface of the fourth lens is concave, and the image side surface of the fourth lens is convex; the fifth lens has negative refractive power, the object side surface of the fifth lens is in a convex shape, and the image side surface of the fifth lens is in a concave shape; the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens satisfy the following conditions: 1.5< f12/f34< 3.0; the maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <120 °.

By distributing the refractive power of part of the lenses of the pick-up lens and designing the surface type of the lenses, the low-order aberration of the pick-up lens can be effectively balanced, the tolerance sensitivity of the pick-up lens can be reduced, the miniaturization of the pick-up lens is kept, and the imaging quality of the pick-up lens is ensured. By controlling the ratio of the composite focal length of the first lens and the second lens to the composite focal length of the third lens and the fourth lens, the effective focal length in the camera lens can be reasonably distributed, the sensitivity of the camera lens is reduced, and the imaging quality of the camera lens is ensured. By controlling the FOV within a reasonable range, the camera lens can be ensured to have a larger field angle, the ultra-wide angle of the camera lens is ensured, and the optical camera lens can simultaneously take into account miniaturization and wide angle.

Preferably, the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens satisfy the following condition: 1.6< f12/f34< 2.9; the maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <115 °.

In the present embodiment, the effective focal length f1 of the first lens, the radius of curvature R1 of the object-side surface of the first lens, and the radius of curvature R2 of the image-side surface of the first lens satisfy: 1.2< f1/(R1+ R2) < 2.7. By controlling the ratio of the effective focal length of the first lens to the sum of the curvature radius of the object side surface and the curvature radius of the image side surface of the first lens, the contribution of the first lens to the astigmatism of the camera lens can be reasonably controlled, so that the imaging quality of the camera lens is ensured. Preferably, 1.3< f1/(R1+ R2) < 2.65.

In the present embodiment, the effective focal length f2 of the second lens and the effective focal length f4 of the fourth lens satisfy: 1.2< (f2+ f4)/(f2-f4) < 2.9. By controlling the ratio of the sum of the effective focal length of the second lens and the effective focal length of the fourth lens to the difference of the effective focal lengths, the focal lengths in the camera lens can be reasonably distributed, and the sensitivity of the camera lens is reduced. Preferably 1.3< (f2+ f4)/(f2-f4) < 2.8.

In the embodiment, the effective focal length f5 of the fifth lens, 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 meet 0.4< f5/(R10-R9) < 1.5. By controlling the ratio of the effective focal length of the fifth lens to the difference between the curvature radius of the image side surface of the fifth lens and the curvature radius of the object side surface of the fifth lens, the size of the rear end of the camera lens can be effectively controlled, and the size of the camera lens is reduced. Preferably 0.5< f5/(R10-R9) < 1.4.

In the present embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens satisfy: 0.8< (R3+ R4)/(R3-R4) < 2.5. The ratio of the sum of the curvature radius of the object side surface and the curvature radius of the image side surface of the second lens to the difference between the two is controlled, so that the refraction angle of the light beam on the second lens can be effectively controlled, the imaging quality of the camera lens is guaranteed, and meanwhile, the good processing characteristic of the camera lens is realized. Preferably, 0.9< (R3+ R4)/(R3-R4) < 2.45.

In the present embodiment, the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R6 of the image-side surface of the third lens satisfy: 0.8< R5/R6< 1.8. By controlling the ratio of the curvature radius of the object side surface to the curvature radius of the image side surface of the third lens, the contribution amount of the third lens to the astigmatism of the camera lens can be reasonably controlled, and the imaging quality of the camera lens is ensured. Preferably, 0.9< R5/R6< 1.7.

In the present embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy: 2.4< R7/R8< 3.7. By controlling the ratio of the curvature radius of the object side surface to the curvature radius of the image side surface of the fourth lens, coma of an on-axis view field and an off-axis view field can be smaller, so that the camera lens has good imaging quality. Preferably 2.45< R7/R8< 3.6.

In the present embodiment, the effective half-aperture DT52 of the image-side surface of the fifth lens, the effective half-aperture DT12 of the image-side surface of the first lens, and the effective half-aperture DT32 of the image-side surface of the third lens satisfy: 1.1< DT52/(DT12+ DT32) < 1.6. By controlling the ratio of the effective half caliber of the image side surface of the fifth lens to the sum of the effective half caliber of the image side surface of the first lens and the effective half caliber of the image side surface of the third lens, the whole caliber of the camera lens can be smaller, the occupied space during assembly of the camera lens is reduced, and the miniaturization of the camera lens is facilitated. Preferably, 1.2< DT52/(DT12+ DT32) < 1.5.

In this embodiment, the combined focal length f45 of the fourth lens and the fifth lens and the combined focal length f123 of the first lens, the second lens and the third lens satisfy: 1.0< f45/f123< 2.9. The ratio of the synthetic focal length of the fourth lens and the fifth lens to the synthetic focal length of the first lens, the second lens and the third lens is controlled, so that the aberration of the front lens and the aberration of the rear lens of the camera lens are effectively balanced, and the imaging quality of the camera lens is improved. Preferably, 1.1< f45/f123< 2.8.

In the embodiment, the on-axis distance SAG22 from the intersection point of the image side surface of the second lens and the optical axis of the imaging lens to the effective radius vertex of the image side surface of the second lens, the on-axis distance SAG41 from the intersection point of the object side surface of the fourth lens and the optical axis to the effective radius vertex of the object side surface of the fourth lens, and the on-axis distance SAG42 from the intersection point of the image side surface of the fourth lens and the optical axis to the effective radius vertex of the image side surface of the fourth lens satisfy: 1.2< SAG42/(SAG22+ SAG41) < 2.6. By controlling SAG42/(SAG22+ SAG41) within a reasonable range, the processing of the second lens and the fourth lens is facilitated, and the yield of the camera lens is ensured. Preferably, 1.3< SAG42/(SAG22+ SAG41) < 2.5.

In the present embodiment, the center thickness CT4 of the fourth lens on the optical axis of the imaging lens, the center thickness CT5 of the fifth lens on the optical axis, the edge thickness ET4 of the fourth lens, and the edge thickness ET5 of the fifth lens satisfy: 3.5< CT4/ET4+ ET5/CT5< 4.6. By controlling the CT4/ET4+ ET5/CT5 in a reasonable range, the distortion in the camera lens can be controlled, the imaging quality is prevented from being influenced by larger distortion at the edge of a view field, and the camera lens is ensured to be stable and clearly imaged. Preferably 3.7< CT4/ET4+ ET5/CT5< 4.5.

Example two

As shown in fig. 1 to fig. 30, the camera lens includes a first lens, a second lens, a third lens, a fourth lens and a fifth lens from the light incident side to the light emergent side. The first lens has positive refractive power, and the object side surface of the first lens is in a convex shape; the image side surface of the first lens is concave; the second lens has positive refractive power, the object side surface of the second lens is concave, and the image side surface of the second lens is convex; the third lens has refractive power, the object side surface of the third lens is convex, and the image side surface of the third lens is concave; the fourth lens has positive refractive power, the object side surface of the fourth lens is concave, and the image side surface of the fourth lens is convex; the fifth lens has negative refractive power, the object side surface of the fifth lens is in a convex shape, and the image side surface of the fifth lens is in a concave shape; the effective half-aperture DT52 of the image side surface of the fifth lens, the effective half-aperture DT12 of the image side surface of the first lens and the effective half-aperture DT32 of the image side surface of the third lens satisfy the following conditions: 1.1< DT52/(DT12+ DT32) < 1.6: 1.0< f45/f123< 2.9; the maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <120 °.

By distributing the refractive power of part of the lenses of the camera lens and designing the surface type of the lenses, the low-order aberration of the camera lens can be effectively balanced, the sensitivity of the tolerance of the camera lens can be reduced, and the imaging quality of the camera lens is ensured while the miniaturization of the camera lens is kept. By controlling the ratio of the effective half caliber of the image side surface of the fifth lens to the sum of the effective half caliber of the image side surface of the first lens and the effective half caliber of the image side surface of the third lens, the whole caliber of the camera lens can be smaller, the occupied space during assembly of the camera lens is reduced, and the miniaturization of the camera lens is facilitated. By controlling the FOV within a reasonable range, the camera lens can be ensured to have a larger field angle, the ultra-wide angle of the camera lens is ensured, and the optical camera lens can simultaneously take into account miniaturization and wide angle.

Preferably, the effective half-aperture DT52 of the image-side surface of the fifth lens, the effective half-aperture DT12 of the image-side surface of the first lens and the effective half-aperture DT32 of the image-side surface of the third lens satisfy: 1.2< DT52/(DT12+ DT32) < 1.5. The maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <115 °.

In the present embodiment, the effective focal length f1 of the first lens, the radius of curvature R1 of the object-side surface of the first lens, and the radius of curvature R2 of the image-side surface of the first lens satisfy: 1.2< f1/(R1+ R2) < 2.7. By controlling the ratio of the effective focal length of the first lens to the sum of the curvature radius of the object side surface and the curvature radius of the image side surface of the first lens, the contribution of the first lens to astigmatism of the camera lens can be reasonably controlled, so that the imaging quality of the camera lens is ensured. Preferably, 1.3< f1/(R1+ R2) < 2.65.

In the present embodiment, the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R6 of the image-side surface of the third lens satisfy: 0.8< R5/R6< 1.8. By controlling the ratio of the curvature radius of the object side surface to the curvature radius of the image side surface of the third lens, the contribution amount of the third lens to the astigmatism of the camera lens can be reasonably controlled, and the imaging quality of the camera lens is ensured. Preferably 0.9< R5/R6< 1.7.

In the embodiment, the curvature radius R7 of the object-side surface of the fourth lens and the curvature radius R8 of the image-side surface of the fourth lens satisfy: 2.4< R7/R8< 3.7. By controlling the ratio of the curvature radius of the object side surface to the curvature radius of the image side surface of the fourth lens, coma of an on-axis view field and an off-axis view field can be smaller, so that the camera lens has good imaging quality. Preferably 2.45< R7/R8< 3.6.

Optionally, the above-described imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an image forming surface.

The imaging lens in the present application may employ a plurality of lenses, for example, five lenses described above. By reasonably distributing the refractive power, the surface shape, the center thickness of each lens, the on-axis distance between the lenses and the like, the imaging quality of the camera lens can be effectively improved, the sensitivity of the camera lens is reduced, and the machinability of the camera lens is improved, so that the camera lens is more beneficial to production and processing and is applicable to portable electronic equipment such as smart phones.

In the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The aspheric lens has the characteristics that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike spherical lenses having a constant curvature from the center of the lens to the periphery of the lens, aspherical lenses have better curvature radius characteristics, and have the 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.

However, it will be appreciated by those skilled in the art that the number of lenses making up the camera lens can be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter. For example, although five lenses are exemplified in the embodiment, the imaging lens is not limited to including five lenses. The camera lens may also include other numbers of lenses, as desired.

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

It should be noted that any one 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 imaging lens of the first example of the present application is described. Fig. 1 shows a schematic configuration diagram of an imaging lens of example one.

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

The first lens E1 has positive refractive power, the object side surface S1 of the first lens is convex, and the image side surface S2 of the first lens is concave. The second lens E2 has positive refractive power, the object side S3 of the second lens is concave, and the image side S4 of the second lens is convex. The third lens E3 has negative refractive power, and the object side surface S5 of the third lens is convex, and the image side surface S6 of the third lens is concave. The fourth lens E4 has positive refractive power, and the object side surface S7 of the fourth lens is concave, and the image side surface S8 of the fourth lens is convex. The fifth lens E5 has negative refractive power, and the object side surface S9 of the fifth lens is convex, and the image side surface S10 of the fifth lens is concave. Filter E6 has an object side S11 and an image side S12 of the filter. The 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 image height ImgH of the imaging lens is 3.05 mm. The total length TTL of the camera lens is 4.05 mm.

Table 1 shows a basic structural parameter table of the imaging lens of example one, in which the units of the radius of curvature, the thickness/distance, and the focal length 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 E1 through the fifth lens E5 are aspheric surfaces, and the surface shape of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below gives the high-order coefficient A4, A6, A8, A10, A12, A14, A16, A18, A20, A22, A24, A26, A28, A30, which can be used for each of the aspherical mirrors S1-S10 in example one.

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-2.2163E-01

1.6464E+00

-3.3669E+01

3.5739E+02

-2.3231E+03

9.3149E+03

-2.2403E+04

S2

-2.3997E-01

-9.6090E-01

4.0713E+00

-1.7309E+01

2.2899E+01

9.6871E+01

-4.2752E+02

S3

-9.7583E-02

2.2858E-01

-9.6074E+00

7.2570E+01

-3.2610E+02

9.2290E+02

-1.5630E+03

S4

1.9684E-01

-1.2754E+00

6.3835E+00

-2.1387E+01

4.8308E+01

-5.9343E+01

2.7973E+01

S5

-1.9247E-01

3.6084E-01

-7.5643E+00

7.4058E+01

-4.3151E+02

1.7014E+03

-4.7406E+03

S6

-2.9487E-01

3.4117E-01

-6.1138E-01

-4.8224E-01

1.0383E+01

-4.2883E+01

1.0353E+02

S7

-7.2587E-02

1.2830E+00

-9.9508E+00

4.6974E+01

-1.4595E+02

3.1293E+02

-4.7299E+02

S8

1.3143E+00

-5.1467E+00

1.8237E+01

-5.2901E+01

1.1779E+02

-1.9656E+02

2.4426E+02

S9

-1.0177E-01

-1.0736E-01

1.3139E-01

-2.9548E-02

-7.7320E-02

1.0756E-01

-7.3843E-02

S10

7.0871E-02

-2.5495E-01

3.0902E-01

-2.4614E-01

1.4110E-01

-5.9920E-02

1.9057E-02

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

2.9465E+04

-1.6161E+04

0.0000E+00

S2

6.2826E+02

-3.1717E+02

0.0000E+00

S3

1.4406E+03

-5.5445E+02

0.0000E+00

S4

3.9888E+00

-2.2095E+00

-2.5314E+00

0.0000E+00

S5

9.4929E+03

-1.3703E+04

1.4121E+04

-1.0122E+04

4.7904E+03

-1.3445E+03

1.6936E+02

S6

-1.6859E+02

1.9319E+02

-1.5673E+02

8.8339E+01

-3.2933E+01

7.2998E+00

-7.2759E-01

S7

5.0785E+02

-3.8532E+02

2.0219E+02

-7.0018E+01

1.4534E+01

-1.4340E+00

2.1576E-02

S8

-2.2525E+02

1.5301E+02

-7.5333E+01

2.6078E+01

-6.0035E+00

8.2329E-01

-5.0773E-02

S9

3.1988E-02

-9.2864E-03

1.8293E-03

-2.4055E-04

2.0094E-05

-9.5488E-07

1.9329E-08

S10

-4.5394E-03

8.0150E-04

-1.0267E-04

9.1971E-06

-5.4129E-07

1.8597E-08

-2.7848E-10

TABLE 2

Fig. 2 shows an axial chromatic aberration curve of the imaging lens of the first example, which shows the deviation of the convergent focal points of the light rays of different wavelengths after passing through the imaging lens. Fig. 3 shows astigmatism curves of the imaging lens of the first example, which represent meridional field curvature and sagittal field curvature. Fig. 4 shows distortion curves of the imaging lens of the first example, which show distortion magnitude values corresponding to different angles of view. Fig. 5 shows a chromatic aberration of magnification curve of the imaging lens of the first example, which shows the deviation of different image heights on the image formation plane after the light passes through the imaging lens.

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

Example two

As shown in fig. 6 to 10, an imaging lens of example two of the present application is described. Fig. 6 shows a schematic configuration diagram of an imaging lens of example two.

As shown in fig. 6, the image capturing lens includes, in order from an object side to an image side, a stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a filter E6, and an image plane S13.

In this example, the image height ImgH of the imaging lens is 3.05 mm. The total length TTL of the camera lens is 3.99 mm.

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

TABLE 3

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

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-2.3529E-01

1.4156E+00

-2.9143E+01

3.0287E+02

-1.9270E+03

7.5582E+03

-1.7757E+04

S2

-2.2379E-01

-1.8268E+00

2.1982E+01

-2.1938E+02

1.3980E+03

-5.7806E+03

1.5444E+04

S3

-1.0286E-01

1.0160E+00

-2.7120E+01

2.7866E+02

-1.7979E+03

7.6748E+03

-2.1961E+04

S4

7.2340E-01

-1.0534E+01

1.1435E+02

-8.6026E+02

4.5058E+03

-1.6656E+04

4.3921E+04

S5

2.2307E-01

-5.7593E+00

5.2232E+01

-3.2370E+02

1.4249E+03

-4.5459E+03

1.0655E+04

S6

-2.3989E-01

-3.6433E-01

4.1991E+00

-2.2737E+01

8.1601E+01

-2.0580E+02

3.7496E+02

S7

-1.0179E-01

2.0272E+00

-1.7404E+01

8.8593E+01

-2.9683E+02

6.9298E+02

-1.1599E+03

S8

1.2829E+00

-4.8286E+00

1.7121E+01

-5.4019E+01

1.3500E+02

-2.5115E+02

3.4229E+02

S9

2.1531E-01

-9.1623E-01

8.6443E-01

7.1558E-01

-2.9400E+00

3.9184E+00

-3.1238E+00

S10

1.9195E-01

-7.0816E-01

1.1244E+00

-1.1347E+00

7.8481E-01

-3.8549E-01

1.3705E-01

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

2.2777E+04

-1.2170E+04

0.0000E+00

S2

-2.5590E+04

2.3777E+04

-9.4149E+03

0.0000E+00

S3

4.1823E+04

-5.0880E+04

3.5667E+04

-1.0906E+04

0.0000E+00

S4

-8.2784E+04

1.1056E+05

-1.0216E+05

6.2128E+04

-2.2383E+04

3.6217E+03

0.0000E+00

S5

-1.8457E+04

2.3549E+04

-2.1822E+04

1.4264E+04

-6.2244E+03

1.6249E+03

-1.9160E+02

S6

-5.0038E+02

4.8992E+02

-3.4803E+02

1.7451E+02

-5.8512E+01

1.1760E+01

-1.0698E+00

S7

1.4121E+03

-1.2537E+03

8.0395E+02

-3.6273E+02

1.0925E+02

-1.9720E+01

1.6130E+00

S8

-3.4120E+02

2.4800E+02

-1.2986E+02

4.7662E+01

-1.1623E+01

1.6895E+00

-1.1065E-01

S9

1.6687E+00

-6.1990E-01

1.6108E-01

-2.8770E-02

3.3686E-03

-2.3294E-04

7.2126E-06

S10

-3.5513E-02

6.6790E-03

-8.9637E-04

8.2943E-05

-4.9658E-06

1.6977E-07

-2.4282E-09

TABLE 4

Fig. 7 shows an axial chromatic aberration curve of the imaging lens of example two, which shows the deviation of the convergent focus of light rays of different wavelengths after passing through the imaging lens. Fig. 8 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of example two. Fig. 9 shows distortion curves of the imaging lens of example two, which show values of distortion magnitudes corresponding to different angles of view. Fig. 10 shows a chromatic aberration of magnification curve of the imaging lens of the second example, which shows the deviation of different image heights on the image forming surface after the light passes through the imaging lens.

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

Example III

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

As shown in fig. 11, the image capturing lens includes, in order from an object side to an image side, a stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a filter E6, and an image plane S13.

The first lens E1 has positive refractive power, and the object-side surface S1 of the first lens is convex, and the image-side surface S2 of the first lens is concave. The second lens E2 has positive refractive power, the object side S3 of the second lens is concave, and the image side S4 of the second lens is convex. The third lens E3 has negative refractive power, and the object side surface S5 of the third lens is convex, and the image side surface S6 of the third lens is concave. The fourth lens E4 has positive refractive power, and the object side surface S7 of the fourth lens is concave, and the image side surface S8 of the fourth lens is convex. The fifth lens E5 has negative refractive power, and the object side surface S9 of the fifth lens is convex, and the image side surface S10 of the fifth lens is concave. Filter E6 has an object side S11 and an image side S12 of the filter. The 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 image height ImgH of the imaging lens is 3.05 mm. The total length TTL of the camera lens is 3.81 mm.

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

TABLE 5

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

TABLE 6

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

As can be seen from fig. 12 to 15, the imaging lens according to the third example can achieve good imaging quality.

Example four

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

As shown in fig. 16, the image capturing lens includes, in order from an object side to an image side, a stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a filter E6, and an image plane S13.

In this example, the image height ImgH of the imaging lens is 3.05 mm. The total length TTL of the camera lens is 3.79 mm.

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

TABLE 7

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

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

-2.5247E-01

7.2178E+00

-2.8526E+02

6.6307E+03

-9.9872E+04

1.0149E+06

-7.1138E+06

S2

-1.2807E-01

-2.9668E+00

7.1368E+01

-1.2183E+03

1.3108E+04

-9.3106E+04

4.4591E+05

S3

-1.8431E-01

5.8064E+00

-1.8017E+02

3.1231E+03

-3.5684E+04

2.8166E+05

-1.5795E+06

S4

5.6398E-01

-1.1646E+01

1.6373E+02

-1.6501E+03

1.1934E+04

-6.2793E+04

2.4288E+05

S5

1.8973E-01

-5.4281E+00

5.2500E+01

-3.5590E+02

1.7356E+03

-6.1867E+03

1.6297E+04

S6

-1.6553E-01

-2.1649E-01

8.0938E-01

4.9243E-01

-1.6686E+01

7.9517E+01

-2.1529E+02

S7

9.6974E-02

1.0133E+00

-9.9584E+00

5.0131E+01

-1.5725E+02

3.3047E+02

-4.7729E+02

S8

1.4432E+00

-5.5931E+00

1.9291E+01

-5.4778E+01

1.1901E+02

-1.8992E+02

2.1926E+02

S9

2.1243E-02

-6.7628E-01

1.1990E+00

-9.6835E-01

3.4922E-02

7.4750E-01

-8.4687E-01

S10

2.2543E-02

-3.4730E-01

6.3293E-01

-6.6526E-01

4.4767E-01

-1.9447E-01

5.0017E-02

Flour mark

A18

A20

A22

A24

A26

A28

A30

S1

3.4625E+07

-1.1594E+08

2.5935E+08

-3.6431E+08

2.8249E+08

-8.6875E+07

0.0000E+00

S2

-1.4451E+06

3.1178E+06

-4.2799E+06

3.3744E+06

-1.1608E+06

0.0000E+00

S3

6.3812E+06

-1.8615E+07

3.8811E+07

-5.6326E+07

5.3975E+07

-3.0655E+07

7.8035E+06

S4

-6.9284E+05

1.4503E+06

-2.1939E+06

2.3272E+06

-1.6384E+06

6.8605E+05

-1.2908E+05

S5

-3.1844E+04

4.5942E+04

-4.8198E+04

3.5678E+04

-1.7625E+04

5.2040E+03

-6.9320E+02

S6

3.8287E+02

-4.6694E+02

3.9374E+02

-2.2584E+02

8.4120E+01

-1.8344E+01

1.7766E+00

S7

4.7658E+02

-3.2465E+02

1.4415E+02

-3.6737E+01

2.9370E+00

8.3665E-01

-1.7029E-01

S8

-1.8206E+02

1.0829E+02

-4.5797E+01

1.3550E+01

-2.7070E+00

3.3525E-01

-1.9896E-02

S9

5.2238E-01

-2.0986E-01

5.7338E-02

-1.0617E-02

1.2788E-03

-9.0537E-05

2.8608E-06

S10

-4.0131E-03

-2.0995E-03

9.1637E-04

-1.8221E-04

2.0822E-05

-1.3192E-06

3.6074E-08

TABLE 8

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

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

Example five

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

As shown in fig. 21, the image capturing lens includes, in order from an object side to an image side, a stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a filter E6, and an image plane S13.

In this example, the image height ImgH of the imaging lens is 3.05 mm. The total length TTL of the camera lens is 3.75 mm.

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

TABLE 9

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

Watch 10

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

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

Example six

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

As shown in fig. 26, the image capturing lens includes, in order from an object side to an image side, a stop STO, a first lens element E1, a second lens element E2, a third lens element E3, a fourth lens element E4, a fifth lens element E5, a filter E6, and an image plane S13.

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

TABLE 11

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

TABLE 12

Fig. 27 shows an on-axis chromatic aberration curve of the imaging lens of example six, which shows the deviation of the convergent focal points of light rays of different wavelengths after passing through the imaging lens. Fig. 28 shows astigmatism curves representing meridional field curvature and sagittal field curvature of the imaging lens of example six. Fig. 29 shows distortion curves of the imaging lens of example six, which show distortion magnitude values corresponding to different angles of view. Fig. 30 shows a chromatic aberration of magnification curve of the imaging lens of example six, which represents a deviation of different image heights on the imaging surface after light passes through the imaging lens.

As can be seen from fig. 27 to 30, the imaging lens according to example six can achieve good image quality.

To sum up, examples one to six satisfy the relationships shown in table 13, respectively.

Conditional formula/example	1	2	3	4	5	6
							FOV(°)	109.5	109.9	108.7	109.0	109.4	109.3
f1/(R1+R2)	2.08	1.93	1.61	2.63	1.44	1.54
							(f2+f4)/(f2-f4)	2.34	2.76	1.60	2.60	1.46	1.55
f5/(R10-R9)	1.32	0.62	0.89	0.97	1.05	0.76
							(R3+R4)/(R3-R4)	1.02	1.27	1.98	1.50	2.22	2.19
R5/R6	1.61	1.47	1.12	1.36	1.06	1.03
							R7/R8	3.51	2.87	2.62	2.64	2.70	2.50
DT52/(DT12+DT32)	1.42	1.34	1.39	1.32	1.46	1.43
							f12/f34	2.01	1.72	2.51	1.78	2.71	2.54
SAG42/(SAG22+SAG41)	2.41	1.76	2.15	1.45	2.20	2.13
							CT4/ET4+ET5/CT5	4.21	4.02	4.42	3.98	4.11	4.23

Table 13 table 14 gives effective focal lengths f1 to f5 of respective lenses of the imaging lenses of example one to example six.

Example parameters	1	2	3	4	5	6
							f1(mm)	14.91	14.84	6.86	12.88	6.03	6.49
f2(mm)	3.24	3.00	5.37	3.11	6.25	5.81
							f3(mm)	-6.92	-7.77	-58.79	-10.33	-166.88	-2023.66
f4(mm)	1.30	1.40	1.25	1.38	1.17	1.26
							f5(mm)	-1.49	-1.50	-1.43	-1.42	-1.30	-1.37
f(mm)	2.49	2.48	2.36	2.48	2.36	2.40
							TTL(mm)	4.05	3.99	3.81	3.79	3.75	3.81
ImgH(mm)	3.05	3.05	3.05	3.05	3.05	3.05

TABLE 14

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

It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection 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 according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of 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 this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An image pickup lens, comprising, from an incident side to an emergent side:

a first lens having a positive refractive power, an object side of the first lens being convex in shape; the image side surface of the first lens is concave;

a second lens having a positive refractive power, an object side surface of the second lens being concave, an image side surface of the second lens being convex;

a third lens having a refractive power, an object side surface of the third lens being convex, an image side surface of the third lens being concave;

a fourth lens having a positive refractive power, an object side surface of the fourth lens being concave, an image side surface of the fourth lens being convex;

a fifth lens having a negative refractive power, an object side surface of the fifth lens being convex shaped, an image side surface of the fifth lens being concave shaped;

the combined focal length f12 of the first lens and the second lens and the combined focal length f34 of the third lens and the fourth lens satisfy the following condition: 1.5< f12/f34< 3.0;

the maximum field angle FOV of the camera lens satisfies the following conditions: 105 ° < FOV <120 °.

2. The imaging lens according to claim 1, wherein an effective focal length f1 of the first lens, a radius of curvature R1 of an object side surface of the first lens, and a radius of curvature R2 of an image side surface of the first lens satisfy: 1.2< f1/(R1+ R2) < 2.7.

3. The imaging lens according to claim 1, wherein an effective focal length f2 of the second lens and an effective focal length f4 of the fourth lens satisfy: 1.2< (f2+ f4)/(f2-f4) < 2.9.

4. The imaging lens according to claim 1, wherein an effective focal length f5 of the fifth lens, 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 0.4< f5/(R10-R9) < 1.5.

5. The imaging lens according to claim 1, wherein a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R4 of an image-side surface of the second lens satisfy: 0.8< (R3+ R4)/(R3-R4) < 2.5.

6. The imaging lens according to claim 1, wherein a radius of curvature R5 of an object side surface of the third lens and a radius of curvature R6 of an image side surface of the third lens satisfy: 0.8< R5/R6< 1.8.

7. The imaging lens according to claim 1, wherein a radius of curvature R7 of an object-side surface of the fourth lens element and a radius of curvature R8 of an image-side surface of the fourth lens element satisfy: 2.4< R7/R8< 3.7.

8. The imaging lens according to claim 1, wherein an effective half-aperture DT52 of the image-side surface of the fifth lens element, an effective half-aperture DT12 of the image-side surface of the first lens element, and an effective half-aperture DT32 of the image-side surface of the third lens element satisfy: 1.1< DT52/(DT12+ DT32) < 1.6.

9. The imaging lens according to claim 1, wherein an on-axis distance SAG22 between an intersection point of an image side surface of the second lens and an optical axis of the imaging lens and an effective radius vertex of the image side surface of the second lens, an on-axis distance SAG41 between an intersection point of an object side surface of the fourth lens and the optical axis and an effective radius vertex of the object side surface of the fourth 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: 1.2< SAG42/(SAG22+ SAG41) < 2.6.

10. The imaging lens according to claim 1, characterized in that a center thickness CT4 of the fourth lens piece on an optical axis of the imaging lens, a center thickness CT5 of the fifth lens piece on the optical axis, an edge thickness ET4 of the fourth lens piece and an edge thickness ET5 of the fifth lens piece satisfy: 3.5< CT4/ET4+ ET5/CT5< 4.6.

11. An image pickup lens, comprising, from an incident side to an emergent side:

the effective half-aperture DT52 of the image side surface of the fifth lens, the effective half-aperture DT12 of the image side surface of the first lens and the effective half-aperture DT32 of the image side surface of the third lens satisfy the following conditions: 1.1< DT52/(DT12+ DT32) < 1.6;

12. The imaging lens according to claim 11, wherein an effective focal length f1 of the first lens, a radius of curvature R1 of an object side surface of the first lens, and a radius of curvature R2 of an image side surface of the first lens satisfy: 1.2< f1/(R1+ R2) < 2.7.

13. The imaging lens according to claim 11, wherein an effective focal length f2 of the second lens and an effective focal length f4 of the fourth lens satisfy: 1.2< (f2+ f4)/(f2-f4) < 2.9.

14. The imaging lens according to claim 11, wherein an effective focal length f5 of the fifth lens element, a radius of curvature R9 of an object side surface of the fifth lens element, and a radius of curvature R10 of an image side surface of the fifth lens element satisfy 0.4< f5/(R10-R9) < 1.5.

15. The imaging lens according to claim 11, wherein 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: 0.8< (R3+ R4)/(R3-R4) < 2.5.

16. The imaging lens according to claim 11, wherein a radius of curvature R5 of an object side surface of the third lens and a radius of curvature R6 of an image side surface of the third lens satisfy: 0.8< R5/R6< 1.8.

17. The imaging lens according to claim 11, wherein a radius of curvature R7 of an object-side surface of the fourth lens element and a radius of curvature R8 of an image-side surface of the fourth lens element satisfy: 2.4< R7/R8< 3.7.

18. The imaging lens of claim 11, wherein an on-axis distance SAG22 from an intersection point of an image side surface of the second lens and an optical axis of the imaging lens to an effective radius vertex of the image side surface of the second lens, an on-axis distance SAG41 from an intersection point of an object side surface of the fourth lens and the optical axis to an effective radius vertex of an object side surface of the fourth lens, and an on-axis distance SAG42 from an intersection point of the 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: 1.2< SAG42/(SAG22+ SAG41) < 2.6.

19. The imaging lens according to claim 11, wherein a center thickness CT4 of the fourth lens piece on an optical axis of the imaging lens, a center thickness CT5 of the fifth lens piece on the optical axis, an edge thickness ET4 of the fourth lens piece, and an edge thickness ET5 of the fifth lens piece satisfy: 3.5< CT4/ET4+ ET5/CT5< 4.6.