CN113759500B

CN113759500B - Optical imaging lens

Info

Publication number: CN113759500B
Application number: CN202010653462.9A
Authority: CN
Inventors: 杨萌; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2022-09-09
Anticipated expiration: 2040-06-05
Also published as: CN111708143A; CN113759500A; CN113759501B; CN113759499B; CN113759499A; CN113759501A

Abstract

The invention discloses an optical imaging lens, which comprises nine lenses, in order from an object side to an image side: the optical lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens, wherein the lenses are independent from each other and have an air space on an optical axis; wherein the optical imaging lens parameters satisfy the following expression: 3.6mm<ImgH ² /TTL<4.6mm；‑1.4<f/(R11+R12)<-0.4; and 0.9<(CT4+CT5)/(CT6+CT7)<1.5. By using the technical scheme of the invention, the ultra-clear nine-piece optical imaging lens with the ultra-large image surface is provided, so that each lens has a compact structure, good processing formability and low system tolerance sensitivity, and the lens has high practicability.

Description

Optical imaging lens

The invention relates to an optical imaging lens based on the invention patent with the application date of 2020 and 6/5, wherein the application numbers are as follows: 202010507592.1.

Technical Field

The invention relates to an optical imaging lens, in particular to an optical imaging lens consisting of nine lenses.

Background

In recent years, with the rapid development of intelligent terminals such as mobile phones and tablet phones, the photographing function is becoming more and more a field in which mobile phone manufacturers of various brands strive for phase-by-phase, and ultra-large image and ultra-clear mobile phone lenses are getting hot and hot day by day. Generally, the larger the pixel of the chip is, the larger the image plane is, and the main camera of the conventional mainstream mobile phone flagship aircraft basically has more than 4800 ten thousand pixels and is formed by six or seven pieces.

In order to meet the application requirement of a camera with an ultra-large image plane on highly integrated electronic equipment and further improve the design freedom degree, the invention aims to provide the ultra-clear nine-piece type photographing lens group with the ultra-large image plane.

Disclosure of Invention

In view of the above problems, the present invention provides an optical imaging lens with nine lenses, which can further improve image quality and control aberration compared to the prior art lens with eight or less lenses.

One aspect of the present invention provides an optical imaging lens, including nine lenses, in order from an object side to an image side: a first lens having a positive optical power; a second lens having a negative optical power; a third lens having a focal power, the object-side surface of the third lens being convex, and the image-side surface of the third lens being concave; a fourth lens having a focal power, wherein the object-side surface of the fourth lens is convex, and the image-side surface of the fourth lens is concave; a fifth lens having a focal power; a sixth lens having optical power; a seventh lens having optical power; an eighth lens having optical power; a ninth lens element having a negative refractive power, the object-side surface of which is concave and the image-side surface of which is concave; wherein, each lens is independent, has the air interval on the optical axis.

According to one embodiment of the invention, the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy the following condition: 0.8< f1/f < 1.5.

According to one embodiment of the present invention, the effective focal length f3 of the third lens, the effective focal length f6 of the sixth lens, and the effective focal length f9 of the ninth lens satisfy: 1.2< f3/(f6+ f9) < 1.7.

According to one embodiment of the present invention, the maximum field angle FOV of the optical imaging lens satisfies: 82 ° < FOV <92 °.

According to one embodiment of the invention, the effective focal length f2 of the second lens and the total effective focal length f of the optical imaging lens satisfy the following condition: -0.5< f/f2< 0.

According to one embodiment of the present invention, the radius of curvature R5 of the object-side surface of the third lens, the radius of curvature R6 of the image-side surface of the third lens, the radius of curvature R7 of the object-side surface of the fourth lens, the radius of curvature R8 of the image-side surface of the fourth lens, R5, R6, R7 and R8 satisfy: 0.2< (R5+ R6)/(R7+ R8) < 0.7.

According to one embodiment of the invention, the edge thickness ET6 of the sixth lens and the central thickness CT6 of the sixth lens on the optical axis satisfy: 1.7< ET6/CT6< 3.3.

According to one embodiment of the present invention, ImgH, which is a half of a diagonal length of an effective pixel region on an imaging plane, and TTL, which is an on-axis distance from an object side of the first lens element to the imaging plane in a direction from the object side to the image side, satisfy: 3.6mm<ImgH ² /TTL<4.6mm。

According to one embodiment of the invention, the curvature radius R11 of the object side surface of the sixth lens, the curvature radius R12 of the image side surface of the sixth lens and the effective focal length f of the optical imaging lens satisfy: -1.4< f/(R11+ R12) < -0.4.

According to one embodiment of the present invention, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis, wherein the central thicknesses CT4, CT5, CT6, and CT7 satisfy: 0.9< (CT4+ CT5)/(CT6+ CT7) < 1.5.

According to one embodiment of the present invention, the effective focal length f7 of the seventh lens and the curvature radius R13 of the object side surface of the seventh lens satisfy: 1.3< f7/R13< 1.9.

According to one embodiment of the invention, 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: 0.8< DT12/DT32< 1.0.

According to one embodiment of the present invention, an on-axis distance SAG81 between an intersection point of an eighth lens object-side surface and an optical axis to an effective radius vertex of the eighth lens object-side surface, an on-axis distance SAG82 between an intersection point of an eighth lens image-side surface and the optical axis to an effective radius vertex of the eighth lens image-side surface, an on-axis distance SAG91 between an intersection point of a ninth lens object-side surface and the optical axis to an effective radius vertex of the ninth lens object-side surface, and an on-axis distance SAG92 between an intersection point of the ninth lens image-side surface and the optical axis to an effective radius vertex of the ninth lens image-side surface, wherein SAG81, SAG82, SAG91, and SAG92 satisfy: 1.0< (SAG81+ SAG82)/(SAG91+ SAG92) < 1.8.

An aspect of the present invention provides an optical imaging lens, each lens being independent of each other, including nine lenses having an air space, an effective focal length f1 of a first lens, an effective focal length f3 of a third lens, an effective focal length f6 of a sixth lens, an effective focal length f9 of the ninth lens, and a maximum angle of field FOV of the optical imaging lens, of the nine lenses, satisfying the following conditions:

0.8<f1/f<1.5；

1.2<f3/(f6+f9)<1.7；

82°<FOV<92°。

according to an embodiment of the present invention, the effective focal length f2 of the second lens element, the total effective focal length f of the optical imaging lens, half ImgH of the diagonal length of the effective pixel area on the imaging plane, and the on-axis distance TTL from the object side surface to the imaging plane of the first lens element in the object-to-image side direction satisfy:

-0.5<f/f2<0；

3.6mm<ImgH ² /TTL<4.6mm。

according to one embodiment of the present invention, the radius of curvature R5 of the object-side surface of the third lens, the radius of curvature R6 of the image-side surface of the third lens, the radius of curvature R7 of the object-side surface of the fourth lens, the radius of curvature R8 of the image-side surface of the fourth lens, the edge thickness ET6 of the sixth lens and the center thickness CT6 of the sixth lens on the optical axis satisfy:

0.2<(R5+R6)/(R7+R8)<0.7；

1.7<ET6/CT6<3.3。

according to one embodiment of the present invention, a central thickness CT4 of the fourth lens on the optical axis, a central thickness CT5 of the fifth lens on the optical axis, a central thickness CT6 of the sixth lens on the optical axis, a central thickness CT7 of the seventh lens on the optical axis, an effective focal length f7 of the seventh lens, and a curvature radius R13 of an object side surface of the seventh lens satisfy:

0.9<(CT4+CT5)/(CT6+CT7)<1.5；

1.3<f7/R13<1.9。

according to one embodiment of the present invention, a radius of curvature R5 of the object-side surface of the third lens, a radius of curvature R6 of the image-side surface of the third lens, a radius of curvature R7 of the object-side surface of the fourth lens, a radius of curvature R8 of the image-side surface of the fourth lens, an on-axis distance SAG81 between an intersection of the object-side surface of the eighth lens and the optical axis and an effective radius vertex of the object-side surface of the eighth lens, an on-axis distance SAG82 between an intersection of the object-side surface of the eighth lens and the optical axis and an effective radius vertex of the object-side surface of the ninth lens, an on-axis distance SAG91 between an intersection of the object-side surface of the ninth lens and the optical axis and an effective radius vertex of the image-side surface of the ninth lens, and an on-axis distance SAG92 between an intersection of the image-side surface of the ninth lens and an effective radius vertex of the image-side surface of the ninth lens satisfy:

0.2<(R5+R6)/(R7+R8)<0.7；

1.0<(SAG81+SAG82)/(SAG91+SAG92)<1.8。

one aspect of the present invention provides an optical imaging lens, wherein the lenses are independent of each other, and the optical imaging lens comprises an effective focal length f2 of a second lens, an overall effective focal length f of the optical imaging lens, a curvature radius R5 of an object-side surface of a third lens, a curvature radius R6 of an image-side surface of the third lens, a curvature radius R7 of an object-side surface of a fourth lens, a curvature radius R8 of an image-side surface of the fourth lens, an edge thickness ET6 of a sixth lens, and a central thickness CT6 of the sixth lens on an optical axis, and the following conditions are satisfied:

-0.5<f/f2<0；

0.2<(R5+R6)/(R7+R8)<0.7；

1.7<ET6/CT6<3.3。

according to one embodiment of the invention, the effective focal length f1 of the first lens, the effective focal length f of the optical imaging lens, the effective focal length f3 of the third lens, the effective focal length f6 of the sixth lens and the effective focal length f9 of the ninth lens satisfy:

0.8<f1/f<1.5；

1.2<f3/(f6+f9)<1.7。

according to one embodiment of the present invention, a maximum field angle FOV of the optical imaging lens, ImgH which is half a diagonal length of an effective pixel region on an imaging plane, and an on-axis distance TTL from an object side surface of the first lens to the imaging plane in an object-side to image-side direction satisfy:

82°<FOV<92°；

3.6mm<ImgH ² /TTL<4.6mm。

according to one embodiment of the invention, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, the central thickness CT7 of the seventh lens on the optical axis, the radius of curvature R5 of the object-side surface of the third lens, the radius of curvature R6 of the image-side surface of the third lens, the radius of curvature R7 of the object-side surface of the fourth lens, and the radius of curvature R of the image-side surface of the fourth lens satisfy:

0.9<(CT4+CT5)/(CT6+CT7)<1.5；

0.2<(R5+R6)/(R7+R8)<0.7。

according to one embodiment of the present invention, an effective focal length f7 of the seventh lens, a radius of curvature R13 of the object-side surface of the seventh lens, an on-axis distance SAG81 between an intersection of the object-side surface of the eighth lens and the optical axis to an effective radius vertex of the object-side surface of the eighth lens, an on-axis distance SAG82 between an intersection of the image-side surface of the eighth lens and the optical axis to an effective radius vertex of the image-side surface of the eighth lens, an on-axis distance SAG91 between an intersection of the object-side surface of the ninth lens and the optical axis to an effective radius vertex of the object-side surface of the ninth lens, and an on-axis distance SAG92 between an intersection of the image-side surface of the ninth lens and the optical axis to an effective radius vertex of the image-side surface of the ninth lens satisfy:

1.3<f7/R13<1.9；

1.0<(SAG81+SAG82)/(SAG91+SAG92)<1.8。

an aspect of the present invention provides an optical imaging lens, independent of each other, including a half ImgH of a diagonal length of an effective pixel region on an imaging plane, an on-axis distance TTL from an object side surface of a first lens to the imaging plane in an object-to-image side direction, a radius of curvature R11 of an object side surface of a sixth lens, a radius of curvature R12 of an image side surface of the sixth lens, an effective focal length f of the optical imaging lens, a central thickness CT4 of a fourth lens on an optical axis, a central thickness CT5 of a fifth lens on the optical axis, a central thickness CT6 of the sixth lens on the optical axis, and a central thickness CT7 of a seventh lens on the optical axis, wherein:

3.6mm<ImgH ² /TTL<4.6mm；

-1.4<f/(R11+R12)<-0.4；

0.9<(CT4+CT5)/(CT6+CT7)<1.5。

according to one embodiment of the present invention, an effective focal length f1 of the first lens, an effective focal length f of the optical imaging lens, an on-axis distance SAG81 from an intersection point of an object-side surface of the eighth lens and the optical axis to an effective radius vertex of an object-side surface of the eighth lens, an on-axis distance SAG82 from an intersection point of an image-side surface of the eighth lens and the optical axis to an effective radius vertex of an image-side surface of the eighth lens, an on-axis distance SAG91 from an intersection point of an object-side surface of the ninth lens and the optical axis to an effective radius vertex of an object-side surface of the ninth lens, and an on-axis distance SAG92 from an intersection point of an image-side surface of the ninth lens and the optical axis to an effective radius vertex of an image-side surface of the ninth lens satisfy:

0.8<f1/f<1.5；

1.0<(SAG81+SAG82)/(SAG91+SAG92)<1.8。

according to one embodiment of the invention, the effective focal length f3 of the third lens, the effective focal length f6 of the sixth lens, the effective focal length f9 of the ninth 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<f3/(f6+f9)<1.7；

0.8<DT12/DT32<1.0。

according to one embodiment of the invention, the maximum field angle FOV of the optical imaging lens, the effective focal length f7 of the seventh lens, and the curvature radius R13 of the object side surface of the seventh lens satisfy:

82°<FOV<92°；

1.3<f7/R13<1.9。

according to one embodiment of the invention, the effective focal length f2 of the second lens, the total effective focal length f of the optical imaging lens, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis satisfy:

-0.5<f/f2<0；

0.9<(CT4+CT5)/(CT6+CT7)<1.5。

according to one embodiment of the invention, the curvature radius R5 of the object side surface of the third lens, the curvature radius R6 of the image side surface of the third lens, the curvature radius R7 of the object side surface of the fourth lens, the curvature radius R8 of the image side surface of the fourth lens, the curvature radius R11 of the object side surface of the sixth lens, the curvature radius R12 of the image side surface of the sixth lens and the effective focal length f of the optical imaging lens satisfy:

0.2<(R5+R6)/(R7+R8)<0.7；

-1.4<f/(R11+R12)<-0.4。

the invention has the following positive effects: by using the technical scheme provided by the invention, the super-resolution nine-lens type photographing lens group with an ultra-large image surface can further improve the image quality and control the aberration, and can obtain a good photographing effect.

Drawings

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

fig. 1 is a schematic structural diagram of an optical imaging lens according to a first embodiment of the present invention;

fig. 2-5 are diagrams illustrating an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of an optical imaging lens according to a first embodiment of the present invention;

FIG. 6 is a schematic structural diagram of an optical imaging lens according to a second embodiment of the present invention;

FIGS. 7-10 are diagrams illustrating an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of an optical imaging lens according to a second embodiment of the present invention;

FIG. 11 is a schematic structural diagram of an optical imaging lens system according to a third embodiment of the present invention;

fig. 12 to 15 show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve of an optical imaging lens according to a third embodiment of the present invention;

fig. 16 is a schematic structural diagram of an optical imaging lens according to a fourth embodiment of the present invention;

fig. 17-20 show axial chromatic aberration curves, astigmatic curves, distortion curves, and chromatic aberration of magnification curves of an optical imaging lens according to a fourth embodiment of the present invention;

fig. 21 is a schematic structural diagram of an optical imaging lens according to a fifth embodiment of the present invention;

fig. 22-25 show axial chromatic aberration curves, astigmatic curves, distortion curves, and chromatic aberration of magnification curves of an optical imaging lens according to a fifth embodiment of the present invention;

fig. 26 is a schematic structural diagram of an optical imaging lens according to a sixth embodiment of the present invention;

27-30 are diagrams illustrating axial chromatic aberration, astigmatism, distortion, and chromatic aberration of magnification curves of an optical imaging lens according to a sixth embodiment of the present invention;

fig. 31 is a schematic structural view of an optical imaging lens according to a seventh embodiment of the present invention;

fig. 32 to 35 are diagrams showing an axial chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve of an optical imaging lens according to a seventh embodiment of the present invention;

Detailed Description

For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.

In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.

Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.

It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

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

The optical imaging lens according to the exemplary embodiment of the present application may include nine lenses, in order from an object side to an image side: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, an eighth lens element, and a ninth lens element; wherein, each lens is independent, has the air interval on the optical axis.

In the embodiment of the application, the first lens has positive focal power, and aberrations such as spherical aberration, curvature of field, distortion and the like can be effectively controlled by reasonably distributing the focal power of the first lens, so that the imaging quality is improved; the second lens has negative focal power, and aberration such as spherical aberration, curvature of field, distortion and the like can be effectively controlled by reasonably distributing the focal power of the second lens, so that the imaging quality is improved; the third lens has positive focal power or negative focal power, the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface; the fourth lens has positive focal power or negative focal power, the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a concave surface; the fifth lens has positive focal power or negative focal power; the sixth lens has positive focal power or negative focal power; the seventh lens has positive focal power or negative focal power; the eighth lens has positive focal power or negative focal power; the ninth lens has negative focal power, the object side surface of the ninth lens is a concave surface, and the image side surface of the ninth lens is a concave surface; the lenses are independent of each other and have an air space on the optical axis.

In the embodiment of the application, the optical imaging lens according to the application can meet the condition that f1/f is 0.8< 1.5; wherein f1 is an effective focal length of the first lens in the direction from the object side to the image side among the nine lenses, and f is an effective focal length of the optical imaging lens; the focal power of the first lens can be reasonably distributed, and aberrations such as spherical aberration, curvature of field, distortion and the like can be effectively controlled, so that the imaging quality is improved. More specifically, f1 and f can satisfy 1.05 ≦ f1/f ≦ 1.31.

In the embodiment of the present application, the optical imaging lens according to the present application may satisfy the condition of 1.2< f3/(f6+ f9) < 1.7; wherein f3 is the effective focal length of the third lens, f6 is the effective focal length of the sixth lens, and f9 is the effective focal length of the ninth lens; through reasonable distribution of focal power of the third, sixth and ninth lenses, aberrations such as spherical aberration, curvature of field and distortion can be effectively controlled, thereby improving imaging quality. More specifically, f3, f6 and f9 satisfy 1.36. ltoreq. f3/(f6+ f 9). ltoreq.1.67, preferably, 1.38. ltoreq. f3/(f6+ f 9). ltoreq.1.46.

In an embodiment of the present application, an optical imaging lens according to the present application may satisfy a condition of 82 ° < FOV <92 °; wherein, the FOV is the maximum field angle of the optical imaging lens; the distortion can be effectively controlled by controlling the field of view. More specifically, the maximum field angle FOV of the optical imaging lens can satisfy 83.2 ° -90.2 ° -83.5 ° -88.5 °.

In the embodiment of the application, the optical imaging lens can meet the condition of-0.5 < f/f2< 0; wherein f is the effective focal length of the optical imaging lens, and f2 is the effective focal length of the second lens; the contribution of the focal power of the second lens in the effective focal length of the whole optical system can be reasonably distributed, and the aberration such as spherical aberration, curvature of field, distortion and the like can be effectively controlled, so that the imaging quality is improved. More specifically, f and f2 may satisfy-0.3. ltoreq. f/f 2. ltoreq.0.13, preferably-0.3. ltoreq. f/f 2. ltoreq.0.16.

In the embodiment of the application, the optical imaging lens can meet the condition of 0.2< (R5+ R6)/(R7+ R8) < 0.7; wherein R5 is the radius of curvature of the object-side surface of the third lens element, R6 is the radius of curvature of the image-side surface of the third lens element, R7 is the radius of curvature of the object-side surface of the fourth lens element, and R8 is the radius of curvature of the image-side surface of the fourth lens element; the curvature of the sensitive surfaces of the third lens and the fourth lens is controlled in a reasonable range, so that the manufacturing difficulty of the lens can be reduced. More specifically, R5, R6, R7 and R8 may satisfy 0.33. ltoreq. of (R5+ R6)/(R7+ R8). ltoreq.0.58, preferably 0.47. ltoreq. of (R5+ R6)/(R7+ R8). ltoreq.0.53.

In the embodiment of the application, the optical imaging lens according to the application can satisfy the condition of 1.7< ET6/CT6< 3.3; wherein CT6 is the central thickness of the sixth lens on the optical axis; by controlling the ratio of the thickness of the edge and the center of the sixth lens, a better balance between the reduction in size and the difficulty of manufacture can be achieved. More specifically, ET6 and CT6 satisfy 1.76 ≦ ET6/CT6 ≦ 3.27, preferably 1.80 ≦ ET6/CT6 ≦ 2.69.

In the embodiment of the application, the optical imaging lens can meet the requirement of 3.6mm<ImgH ² /TTL<4.6mm of condition; wherein ImgH is half of the diagonal length of the effective pixel area on the imaging surface, and TTL is the axial distance from the object side surface of the first lens to the imaging surface; the size of the lens can be reduced by controlling the ratio of ImgH to TTL. More specifically, ImgH ² The TTL can meet the requirement that the ImgH is more than or equal to 3.94mm ² TTL is not more than 4.50mm, preferably ImgH is not more than 4.03mm ² /TTL≤4.29mm。

In the embodiment of the application, the optical imaging lens can meet the condition of-1.4 < f/(R11+ R12) < -0.4; wherein f is the effective focal length of the optical imaging lens, R11 is the radius of curvature of the object-side surface of the sixth lens element, and R12 is the radius of curvature of the image-side surface of the sixth lens element; the tolerance sensitivity of the sixth lens surface is reduced and the processing is easy. More specifically, f, R11 and R12 may satisfy-1.37. ltoreq. f/(R11+ R12). ltoreq.0.63, preferably-1.30. ltoreq. f/(R11+ R12). ltoreq.0.72.

In the embodiment of the application, the optical imaging lens can meet the condition of 0.9< (CT4+ CT5)/(CT6+ CT7) < 1.5; wherein CT4 is the central thickness of the fourth lens on the optical axis, CT5 is the central thickness of the fifth lens on the optical axis, CT6 is the central thickness of the sixth lens on the optical axis, and CT7 is the central thickness of the seventh lens on the optical axis; controlling the relative proportions of the center thicknesses of the lenses allows a better balance between foreshortening and manufacturing difficulties. More specifically, CT4, CT5, CT6 and CT7 satisfy 0.94. ltoreq. of (CT4+ CT5)/(CT6+ CT 7). ltoreq.1.45, preferably, 0.99. ltoreq. of (CT4+ CT5)/(CT6+ CT 7). ltoreq.1.27.

In the embodiment of the application, the optical imaging lens can meet the condition that 1.3< f7/R13< 1.9; wherein f7 is the effective focal length of the seventh lens, and R13 is the radius of curvature of the object-side surface of the seventh lens; the tolerance sensitivity of the seventh lens surface is reduced and the processing is easy. More specifically, f7 and R13 satisfy 1.40. ltoreq. f 7/R13. ltoreq.1.82, preferably 1.43. ltoreq. f 7/R13. ltoreq.1.75.

In the embodiment of the application, the optical imaging lens can meet the condition of 0.8< DT12/DT32< 1.0; wherein DT12 is the effective half aperture of the image side surface of the first lens, and DT32 is the effective half aperture of the image side surface of the third lens; optimize the lens size, reduce the processing degree of difficulty and promote the assemblage nature. More specifically, DT12 and DT32 satisfy 0.85. ltoreq. DT12/DT 32. ltoreq.0.92, preferably 0.90. ltoreq. DT12/DT 32. ltoreq.0.92.

In the embodiment of the present application, the optical imaging lens according to the present application may satisfy the condition of 1.0< (SAG81+ SAG82)/(SAG91+ SAG92) < 1.8; SAG81 is an axial distance between an intersection point of an object side surface of the eighth lens and an optical axis and an effective radius vertex of the object side surface of the eighth lens, SAG82 is an axial distance between an intersection point of an image side surface of the eighth lens and the optical axis and an effective radius vertex of an image side surface of the eighth lens, SAG91 is an axial distance between an intersection point of an object side surface of the ninth lens and the optical axis and an effective radius vertex of an object side surface of the ninth lens, and SAG92 is an axial distance between an intersection point of an image side surface of the ninth lens and the optical axis and an effective radius vertex of an image side surface of the ninth lens; and the tolerance sensitivity is reduced, so that the processing is easy. More specifically, SAG81, SAG82, SAG91 and SAG92 may satisfy 1.07 ≦ (SAG81+ SAG82)/(SAG91+ SAG92) ≦ 1.71, preferably 1.14 ≦ (SAG81+ SAG82)/(SAG91+ SAG92) ≦ 1.37.

All technical features of the optical imaging lens of the invention can be combined and configured to achieve corresponding effects.

The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, nine lenses as described above. By reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance between each lens and the like, the structure of each lens is compact, the processing formability is good, the sensitivity of system tolerance is low, and the practicability of the lens is high; the electronic product can have the characteristics of high resolution, small size, large wide angle, good imaging quality and the like through the optical imaging lens with the configuration.

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

Example one

Fig. 1 is a schematic structural diagram of an optical imaging lens according to a first embodiment of the present application, and as shown in fig. 1, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2; the second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4; the third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8; the fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10; the sixth lens element has negative power, and has a concave object-side surface S11 and a convex image-side surface S12; the seventh lens has positive focal power, and the object side surface S13 of the seventh lens is a convex surface, and the image side surface S14 of the seventh lens is a convex surface; the eighth lens element has positive power, and has a concave object-side surface S15 and a convex image-side surface S16; the ninth lens element has negative power, and has a concave object-side surface S17 and a concave image-side surface S18; filter E10 has an object side S19 and an image side S20. The light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

Table 1 shows the basic parameters of the optical imaging lens of the first embodiment, wherein the curvature radius, the thickness, and the distance are all in millimeter units.

Flour mark	Surface type	Radius of curvature	Thickness of	Focal length	Refractive index	Coefficient of dispersion	Coefficient of cone
								OBJ	Spherical surface	All-round	Go to nothing
STO	Spherical surface	Go to nothing	-0.2400
								S1	Aspherical surface	3.9130	0.5617	6.77	1.54	56.1	-5.9237
S2	Aspherical surface	-60.4488	0.1439				-90.0000
								S3	Aspherical surface	130.1870	0.2539	-21.14	1.54	56.1	90.0000
S4	Aspherical surface	10.5649	0.0977				9.3228
								S5	Aspherical surface	4.5515	0.2513	-18.86	1.64	23.3	-10.9835
S6	Aspherical surface	3.2330	0.5340				-6.0893
								S7	Aspherical surface	7.6679	0.5105	97.14	1.54	56.1	-5.6358
S8	Aspherical surface	8.7579	0.1891				-90.0000
								S9	Aspherical surface	5.9090	0.6172	8.75	1.54	56.1	-36.7715
S10	Aspherical surface	-23.6138	0.4891				86.3371
								S11	Aspherical surface	-1.7952	0.3173	-8.41	1.64	23.3	-2.2386
S12	Aspherical surface	-2.8812	0.3436				-4.3112
								S13	Aspherical surface	5.7650	0.8870	8.22	1.54	56.1	1.0633
S14	Aspherical surface	-18.9310	0.3360				2.9486
								S15	Aspherical surface	-10.0880	0.6900	4.56	1.54	56.1	2.6774
S16	Aspherical surface	-2.0390	0.3620				-6.7965
								S17	Aspherical surface	-38.0510	0.7450	-2.85	1.54	55.7	85.0000
S18	Aspherical surface	1.6010	1.0500				-6.5954
								S19	Spherical surface	All-round	0.1800		1.52	64.2
S20	Spherical surface	All-round	0.3680
								S21	Spherical surface	All-round

TABLE 1

In the first embodiment, the effective focal length of the first lens is f1, and the effective focal length f of the optical imaging lens, f1/f, is 1.06, which satisfies the following relation: 0.8< f1/f <1.5

In the first embodiment, the effective focal length f3 of the third lens, the effective focal length f6 of the sixth lens, and the effective focal length f9 of the ninth lens, f3/(f6+ f9) are 1.67, and satisfy the relationship: 1.2< f3/(f6+ f9) < 1.7.

In the first embodiment, the maximum field angle FOV, FOV of the optical imaging lens, 83.5 ° satisfies the relation: 82 < FOV < 92.

In the first embodiment, the effective focal length f2 of the second lens and the total effective focal length f of the optical imaging lens, f/f2 is-0.30, and the following relation is satisfied: -0.5< f/f2< 0.

In the present first embodiment, the radius of curvature R5 of the object-side surface of the third lens, the radius of curvature R6 of the image-side surface of the third lens, 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, (R5+ R6)/(R7+ R8) are 0.47, and satisfy the relationship: 0.2< (R5+ R6)/(R7+ R8) < 0.7.

In the first embodiment, the edge thickness ET6 of the sixth lens and the central thickness CT6, ET6/CT6 of the sixth lens on the optical axis are 1.76, which satisfy the relationship: 1.7< ET6/CT6< 3.3.

In the first embodiment, ImgH, which is half the diagonal length of the effective pixel region on the imaging plane, and TTL, ImgH, which is the on-axis distance from the object side surface of the first lens element to the imaging plane in the object-to-image side direction ² the/TTL is 4.03, and satisfies the relation: 3.6mm<ImgH ² /TTL<4.6mm。

In the first embodiment, the radius of curvature R11 of the object-side surface of the sixth lens element, the radius of curvature R12 of the image-side surface of the sixth lens element, and the effective focal length f of the optical imaging lens, f/(R11+ R12) — 1.37 satisfy the following relation: -1.4< f/(R11+ R12) < -0.4.

In the present first embodiment, the central thickness CT4 of the fourth lens on the optical axis, the central thickness CT5 of the fifth lens on the optical axis, the central thickness CT6 of the sixth lens on the optical axis, and the central thickness CT7 of the seventh lens on the optical axis, (CT4+ CT5)/(CT6+ CT7) are 0.94, which satisfy: 0.9< (CT4+ CT5)/(CT6+ CT7) < 1.5.

In the present first embodiment, the on-axis distance SAG81 between the intersection of the eighth lens object-side surface and the optical axis to the effective radius vertex of the eighth lens object-side surface, the on-axis distance SAG82 between the intersection of the eighth lens image-side surface and the optical axis to the effective radius vertex of the eighth lens image-side surface, the on-axis distance SAG91 between the intersection of the ninth lens object-side surface and the optical axis to the effective radius vertex of the ninth lens object-side surface, and the on-axis distance SAG92 between the intersection of the ninth lens image-side surface and the optical axis to the effective radius vertex of the ninth lens image-side surface (SAG81+ SAG82)/(SAG91+ SAG92) ═ 1.14 satisfy the relationship: 1.0< (SAG81+ SAG82)/(SAG91+ SAG92) < 1.8.

In the first embodiment, the effective half aperture DT12 of the image side surface of the first lens and the effective half aperture DT32, DT12/DT32 of the image side surface of the third lens are equal to 0.90, and satisfy the relationship: 0.8< DT12/DT32< 1.0.

In the first embodiment, the object-side surface and the image-side surface of any one of the first lens E1 to the ninth lens E9 are aspheric surfaces, and the surface shape x of each aspheric lens can be defined by, but is not limited to, the following aspheric surface formula:

wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; 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 the conic coefficient (given in table 1); ai is the correction coefficient of the i-th order of the aspherical surface.

Table 2 below gives the coefficients of high-order terms a4, a6, A8, a10, a12, and a14 for each aspherical surface S1-S18 that can be used for each aspherical lens in the first embodiment of the present application.

TABLE 2

Fig. 2 is an axial chromatic aberration curve of the optical imaging lens according to the first embodiment, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 3 shows astigmatism curves of the optical imaging lens in the first embodiment, which represent meridional field curvature and sagittal field curvature. Fig. 4 is a distortion curve of the optical imaging lens in the first embodiment, which shows distortion magnitude values corresponding to different image heights. Fig. 5 is a chromatic aberration of magnification curve of the optical imaging lens in the first embodiment, which shows the deviation of different image heights of the light beam on the imaging surface after passing through the lens. As can be seen from fig. 2 to 5, the optical imaging lens of the first embodiment can achieve good imaging quality.

Example two

Fig. 6 is a schematic structural diagram of an optical imaging lens according to a second embodiment of the present application, and as shown in fig. 6, the image capturing lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an image plane S21.

In the second embodiment of the present application, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table 3 below.

TABLE 3

Table 4 shows basic parameters of the optical imaging lens according to the second embodiment of the present application, where the radius of curvature, the thickness, and the distance are all in millimeter units.

TABLE 4

Table 5 below gives the high-order term coefficients A4, A6, A8, A10, A12 and A14 for each of the aspherical surfaces S1-S18 that can be used for each of the aspherical lenses in the second embodiment of the present application.

Flour mark

A4

A6

A8

A10

A12

A14

S1

1.1022E-02

-2.2903E-03

-5.8040E-05

-5.1837E-05

-7.9693E-05

4.7473E-06

S2

-2.9542E-03

6.9697E-04

6.8373E-04

-1.9070E-03

8.0950E-04

-1.1876E-04

S3

-4.3400E-04

5.0203E-03

-9.8225E-04

-1.0314E-03

7.7984E-04

-1.1426E-04

S4

-1.3215E-02

1.2063E-02

-9.2994E-03

5.3768E-03

-1.5907E-03

1.9626E-04

S5

-3.0824E-02

1.3950E-02

-7.6466E-03

4.3455E-03

-1.3953E-03

1.5425E-04

S6

-1.5874E-02

7.9194E-03

-2.9644E-03

1.5080E-03

-4.9622E-04

5.7797E-05

S7

-5.9703E-03

4.9216E-03

-3.1066E-03

9.4807E-04

-1.7711E-04

1.4139E-05

S8

-1.4169E-02

5.7365E-03

-1.9474E-03

3.4926E-04

-5.5500E-05

3.6890E-06

S9

-1.4482E-02

-1.1525E-03

-6.5375E-04

5.2118E-04

-1.2759E-04

1.0048E-05

S10

-1.1873E-02

1.7119E-03

-3.0050E-03

1.0367E-03

-1.6021E-04

9.8671E-06

S11

2.6728E-02

-6.9714E-03

3.7564E-04

3.5588E-05

9.5842E-06

-1.4207E-06

S12

1.0164E-02

-3.6274E-03

8.8392E-04

-1.9568E-04

2.7330E-05

-1.3721E-06

S13

-1.5327E-02

2.7864E-03

-5.0043E-04

4.8666E-05

-2.9736E-06

5.6837E-08

S14

3.2170E-03

-8.8768E-04

3.9714E-05

6.3734E-06

-1.1443E-06

4.6104E-08

S15

-2.8748E-03

5.0092E-05

6.3650E-05

-9.3797E-06

5.7263E-07

-1.2901E-08

S16

-4.3747E-03

5.1612E-05

3.0747E-04

-5.1185E-05

3.1641E-06

-6.9705E-08

S17

-1.4563E-02

6.8565E-04

2.5656E-06

-9.1590E-07

8.1936E-08

-2.7754E-09

S18

-7.3299E-03

6.1723E-04

-3.8447E-05

1.5364E-06

-3.7906E-08

4.1841E-10

TABLE 5

Fig. 7 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a second embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 8 shows an astigmatism curve representing meridional field curvature and sagittal field curvature of an optical imaging lens according to the second embodiment of the present application. Fig. 9 is a distortion curve of the optical imaging lens according to the second embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 10 is a chromatic aberration of magnification curve of an optical imaging lens according to a second embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 7 to 10, the optical imaging lens according to the second embodiment of the present application can achieve good imaging quality.

EXAMPLE III

Fig. 11 is a schematic structural diagram of an optical imaging lens assembly according to a third embodiment of the present application, and as shown in fig. 11, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2; the second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4; the third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8; the fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10; the sixth lens element has negative power, and has a concave object-side surface S11 and a convex image-side surface S12; the seventh lens has positive focal power, the object side surface of the seventh lens is a convex surface S13, and the image side surface S14 is a convex surface; the eighth lens element has positive power, and has a concave object-side surface S15 and a convex image-side surface S16; the ninth lens element has negative power, and has a concave object-side surface S17 and a concave image-side surface S18; filter E10 has an object side S19 and an image side S20. The light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

In the third embodiment of the present application, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table 6 below.

TABLE 6

Table 7 shows basic parameters of the optical imaging lens according to the third embodiment of the present application, where the radius of curvature, the thickness, and the distance are all in millimeter units.

TABLE 7

Table 8 below gives the coefficients of high-order terms a4, a6, A8, a10, a12, and a14 for each aspherical surface S1-S18 that can be used for each aspherical lens in the third embodiment of the present application.

Flour mark

A4

A6

A8

A10

A12

A14

S1

1.0776E-02

-2.1624E-03

4.4254E-04

-6.0596E-04

1.5277E-04

-2.2933E-05

S2

-3.7553E-03

2.4673E-03

-1.9965E-03

2.6741E-05

2.0947E-04

-4.7689E-05

S3

-5.0706E-04

7.4011E-03

-6.5498E-03

3.6321E-03

-8.1379E-04

7.2473E-05

S4

-1.1981E-02

1.1869E-02

-1.2091E-02

7.8186E-03

-2.2329E-03

2.3847E-04

S5

-3.0816E-02

1.5064E-02

-9.7422E-03

5.2368E-03

-1.4110E-03

1.2831E-04

S6

-1.6407E-02

9.6244E-03

-4.3360E-03

1.9079E-03

-5.1803E-04

5.2632E-05

S7

-5.7103E-03

4.3643E-03

-2.5646E-03

7.5486E-04

-1.4065E-04

1.0789E-05

S8

-1.3842E-02

4.9949E-03

-1.7816E-03

3.4834E-04

-5.8996E-05

3.9908E-06

S9

-1.4856E-02

-3.0709E-04

-6.9019E-04

3.8660E-04

-9.1779E-05

7.4136E-06

S10

-1.2711E-02

1.4850E-03

-2.4352E-03

8.0705E-04

-1.2118E-04

7.3617E-06

S11

2.5578E-02

-6.2376E-03

3.3639E-05

1.4092E-04

-8.1416E-06

-2.8844E-07

S12

1.0406E-02

-3.6196E-03

8.0800E-04

-1.7139E-04

2.4161E-05

-1.2277E-06

S13

-1.3796E-02

1.7140E-03

-2.8507E-04

2.6283E-05

-2.0063E-06

5.3712E-08

S14

5.8495E-03

-2.2903E-03

3.4900E-04

-3.0151E-05

9.9823E-07

-5.6797E-09

S15

-2.8725E-03

7.2733E-05

6.4238E-05

-9.4782E-06

5.5977E-07

-1.1776E-08

S16

-4.5517E-03

2.7949E-04

2.6306E-04

-4.7895E-05

3.0815E-06

-6.9867E-08

S17

-1.6624E-02

5.7340E-04

7.8404E-05

-9.1485E-06

4.7832E-07

-1.0563E-08

S18

-8.5567E-03

8.5000E-04

-5.6074E-05

2.2558E-06

-5.1053E-08

4.8319E-10

TABLE 8

Fig. 12 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a third embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 13 shows astigmatism curves of the optical imaging lens in the third embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 14 shows distortion curves of the optical imaging lens according to the third embodiment of the present application, which show distortion magnitude values corresponding to different image heights. Fig. 15 is a chromatic aberration of magnification curve of an optical imaging lens according to a third embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 12 to 15, the optical imaging lens according to the third embodiment of the present application can achieve good imaging quality.

Example four

Fig. 16 is a schematic structural diagram of an optical imaging lens according to a fourth embodiment of the present application, and as shown in fig. 16, the image capturing lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an image plane S21.

In the fourth embodiment of the present application, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table 9 below.

TABLE 9

Table 10 shows the basic parameters of the optical imaging lens according to the fourth embodiment of the present application, where the radius of curvature, the thickness, and the distance are all in millimeter units.

Flour mark	Surface type	Radius of curvature	Thickness of	Focal length	Refractive index	Coefficient of dispersion	Coefficient of cone
								OBJ	Spherical surface	All-round	All-round
STO	Spherical surface	All-round	-0.2400
								S1	Aspherical surface	3.9138	0.5654	6.82	1.54	56.1	-5.9458
S2	Aspherical surface	-68.2241	0.1192				-90.0000
								S3	Aspherical surface	104.3876	0.2649	-21.81	1.54	56.1	-90.0000
S4	Aspherical surface	10.6496	0.1150				9.7288
								S5	Aspherical surface	5.1578	0.2487	-18.54	1.64	23.3	-11.1767
S6	Aspherical surface	3.5265	0.5462				-6.0450
								S7	Aspherical surface	7.7162	0.5158	116.15	1.54	56.1	-4.9853
S8	Aspherical surface	8.5817	0.2173				-89.8510
								S9	Aspherical surface	5.8321	0.6381	8.65	1.54	56.1	-35.4787
S10	Aspherical surface	-23.4569	0.5021				89.0579
								S11	Aspherical surface	-1.8718	0.3212	-8.65	1.64	23.3	-2.2321
S12	Aspherical surface	-3.0186	0.3392				-4.3482
								S13	Aspherical surface	5.7790	0.8500	8.39	1.54	56.1	0.9303
S14	Aspherical surface	-20.6806	0.3499				4.8445
								S15	Aspherical surface	-10.3792	0.7535	4.57	1.54	56.1	2.2323
S16	Aspherical surface	-2.0595	0.3405				-6.3192
								S17	Aspherical surface	-38.0846	0.7264	-3.00	1.54	55.7	84.9079
S18	Aspherical surface	1.6856	1.0442				-5.7087
								S19	Spherical surface	All-round	0.2150		1.52	64.2
S20	Spherical surface	Go to nothing	0.3622
								S21	Spherical surface	Go to nothing

Watch 10

Table 11 below gives the coefficients of high-order terms a4, a6, A8, a10, a12, and a14 for each aspherical surface S1-S18 of each aspherical lens used in the fourth embodiment of the present application.

TABLE 11

Fig. 17 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a fourth embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 18 shows astigmatism curves of the optical imaging lens system according to the fourth embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 19 is a distortion curve of the optical imaging lens according to the fourth embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 20 is a chromatic aberration of magnification curve of an optical imaging lens according to the fourth embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 17 to 20, the optical imaging lens according to the fourth embodiment of the present application can achieve good imaging quality.

EXAMPLE five

Fig. 21 is a schematic structural diagram of an optical imaging lens according to a fifth embodiment of the present application, and as shown in fig. 21, the image capturing lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an image plane S21.

In the fifth embodiment of the present application, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table 12 below.

TABLE 12

Table 13 shows basic parameters of the imaging lens assembly according to the fifth embodiment of the present application, wherein the radius of curvature, the thickness, and the distance are all in millimeter units.

Watch 13

Table 14 below gives the coefficients of high-order terms a4, a6, A8, a10, a12, and a14 for each aspherical surface S1-S18 of each aspherical lens used in the fifth embodiment of the present application.

Flour mark

A4

A6

A8

A10

A12

A14

A16

A18

S1

1.0306E-02

5.7851E-04

-4.1020E-03

3.7939E-03

-2.2066E-03

6.4715E-04

-8.1756E-05

0.0000E+00

S2

-5.0333E-03

9.2751E-03

-1.3050E-02

9.2790E-03

-3.9871E-03

9.3501E-04

-9.6803E-05

0.0000E+00

S3

-4.6688E-03

2.3816E-02

-3.3901E-02

2.5945E-02

-1.0327E-02

2.0806E-03

-1.6020E-04

0.0000E+00

S4

-1.6200E-02

2.6964E-02

-3.4868E-02

2.4716E-02

-8.3235E-03

1.1208E-03

-1.3146E-05

0.0000E+00

S5

-3.3090E-02

2.2087E-02

-2.0497E-02

1.3339E-02

-4.4258E-03

6.0287E-04

-1.6618E-05

0.0000E+00

S6

-1.7271E-02

1.2447E-02

-8.9093E-03

5.6310E-03

-2.1065E-03

3.9957E-04

-3.0261E-05

0.0000E+00

S7

-4.7864E-03

3.6773E-03

-2.4184E-03

7.3681E-04

-1.4443E-04

1.3306E-05

-2.7976E-07

0.0000E+00

S8

-1.4776E-02

4.9191E-03

-2.0859E-03

5.6832E-04

-1.3909E-04

2.1089E-05

-1.4585E-06

0.0000E+00

S9

-1.5327E-02

2.1941E-03

-2.3712E-03

1.2149E-03

-3.8795E-04

7.3541E-05

-7.8151E-06

3.6854E-07

S10

-1.6996E-02

2.9714E-03

-2.4967E-03

7.6939E-04

-1.5888E-04

2.7801E-05

-3.6137E-06

2.2080E-07

S11

2.6213E-02

-7.8855E-03

1.3117E-03

-3.4702E-04

8.9669E-05

-1.0547E-05

4.8408E-07

-6.0989E-09

S12

1.1226E-02

-4.0576E-03

6.7896E-04

1.2661E-05

-4.2966E-05

1.0982E-05

-1.1162E-06

4.0366E-08

S13

-1.5206E-02

1.6924E-03

-4.6078E-04

1.2493E-04

-2.9260E-05

3.9532E-06

-2.9604E-07

9.6225E-09

S14

1.3234E-02

-8.3834E-03

2.6541E-03

-5.8726E-04

8.5298E-05

-8.0297E-06

4.4718E-07

-1.0994E-08

S15

-1.1010E-03

-1.0727E-03

5.4673E-04

-1.3135E-04

1.7557E-05

-1.3176E-06

5.1437E-08

-8.0187E-10

S16

-9.9506E-03

4.9726E-03

-1.4919E-03

3.1088E-04

-3.9962E-05

2.9404E-06

-1.1376E-07

1.7971E-09

S17

-1.9323E-02

-5.4530E-04

5.2264E-04

-7.7939E-05

5.8567E-06

-1.9729E-07

6.9074E-10

7.2897E-11

S18

-1.4581E-02

2.0822E-03

-1.9625E-04

1.2332E-05

-5.0912E-07

1.3126E-08

-1.9405E-10

1.2669E-12

TABLE 14

Fig. 22 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a fifth embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 23 shows astigmatism curves of an optical imaging lens according to a fifth embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 24 is a distortion curve of the optical imaging lens according to the fifth embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 25 is a chromatic aberration of magnification curve of an optical imaging lens according to a fifth embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 22 to 25, the optical imaging lens according to the fifth embodiment of the present application can achieve good imaging quality.

EXAMPLE six

Fig. 26 is a schematic structural diagram of an optical imaging lens according to a sixth embodiment of the present application, and as shown in fig. 26, the image capturing lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an image plane S21.

In the sixth embodiment of the present application, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table 15 below.

Watch 15

Table 16 shows basic parameters of the optical imaging lens according to the sixth embodiment of the present application, where the radius of curvature, the thickness, and the distance are all in millimeter units.

TABLE 16

Table 17 below shows the high-order term coefficients a4, a6, A8, a10, a12, and a14 for each of the aspherical surfaces S1 to S18 that can be used for each of the aspherical lenses in the sixth embodiment of the present application.

Flour mark

A4

A6

A8

A10

A12

A14

S1

1.0746E-02

-1.8159E-03

8.7211E-05

-4.8129E-04

1.9698E-04

-4.5666E-05

S2

-4.8779E-03

3.0090E-03

-1.7188E-03

-2.3081E-04

3.1782E-04

-7.3862E-05

S3

-5.1526E-04

7.0817E-03

-5.9706E-03

3.4561E-03

-8.0511E-04

7.4212E-05

S4

-1.1779E-02

1.2128E-02

-1.2924E-02

8.3024E-03

-2.3196E-03

2.4392E-04

S5

-3.0834E-02

1.5689E-02

-1.1093E-02

6.0465E-03

-1.6165E-03

1.4833E-04

S6

-1.7268E-02

1.0869E-02

-5.4323E-03

2.5123E-03

-6.8166E-04

6.9585E-05

S7

-5.4423E-03

3.8682E-03

-2.2610E-03

6.8219E-04

-1.3241E-04

1.0725E-05

S8

-1.3181E-02

3.7514E-03

-1.0719E-03

5.0860E-05

9.0212E-06

-2.3225E-06

S9

-1.4441E-02

-5.9320E-04

1.4018E-04

-3.8091E-05

-7.4199E-06

1.4610E-06

S10

-1.5075E-02

2.1827E-03

-2.4474E-03

7.8078E-04

-1.2056E-04

7.7793E-06

S11

2.4977E-02

-6.0038E-03

7.6160E-06

1.3831E-04

-8.3594E-06

-2.2558E-07

S12

1.0974E-02

-4.1283E-03

1.0227E-03

-2.2183E-04

3.0517E-05

-1.5283E-06

S13

-1.3847E-02

1.0221E-03

-8.1162E-05

-7.9304E-06

9.0621E-07

-4.8709E-08

S14

7.7885E-03

-3.3849E-03

5.8711E-04

-6.2834E-05

3.4620E-06

-8.0578E-08

S15

-3.2293E-03

8.1070E-05

6.6455E-05

-9.7296E-06

5.5456E-07

-1.0455E-08

S16

-4.3175E-03

3.4302E-04

2.8032E-04

-5.4012E-05

3.6409E-06

-8.6683E-08

S17

-1.9717E-02

6.4262E-04

1.1989E-04

-1.4079E-05

7.6143E-07

-1.7755E-08

S18

-1.0676E-02

1.1948E-03

-8.9410E-05

4.1440E-06

-1.1045E-07

1.2320E-09

TABLE 17

Fig. 27 is a diagram illustrating an axial chromatic aberration curve of an optical imaging lens according to a sixth embodiment of the present application, which shows the convergent focus deviation of light rays with different wavelengths after passing through the lens. Fig. 28 shows astigmatism curves of an optical imaging lens according to a sixth embodiment of the present application, which represent meridional field curvature and sagittal field curvature. Fig. 29 is a distortion curve of an optical imaging lens according to a sixth embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 30 is a chromatic aberration of magnification curve of an optical imaging lens according to a sixth embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 27 to 30, the optical imaging lens according to the sixth embodiment of the present application can achieve good imaging quality.

EXAMPLE seven

Fig. 31 is a schematic structural diagram of an optical imaging lens according to a seventh embodiment of the present application, and as shown in fig. 31, the imaging lens assembly includes, in order from an object side surface to an image side surface, a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a ninth lens E9, a filter E10, and an imaging surface S21.

The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2; the second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4; the third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6; the fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8; the fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10; the sixth lens element has negative power, and has a concave object-side surface S11 and a convex image-side surface S12; the seventh lens has positive focal power, and the object side surface S13 of the seventh lens is a convex surface, and the image side surface S14 of the seventh lens is a convex surface; the eighth lens element has positive power, and has a concave object-side surface S15 and a convex image-side surface S16; the ninth lens element has negative power, and has a concave object-side surface S17 and a concave image-side surface S18; the filter E10 has an object side S19 and an image side S20. The light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

In the seventh embodiment of the present application, the parameters of each relation are as explained in the first embodiment, but the numerical values of each relation are as listed in table 18 below.

Watch 18

Table 19 shows basic parameters of an optical imaging lens according to the seventh embodiment of the present application, in which the radius of curvature, the thickness, and the distance are all in millimeter units.

Watch 19

The following table 20 shows the high-order term coefficients a4, a6, A8, a10, a12, and a14 for each aspherical surface S1-S18 of each aspherical lens used in the seventh embodiment of the present application.

Watch 20

Fig. 32 is a diagram illustrating axial chromatic aberration curves of an optical imaging lens according to a seventh embodiment of the present application, which shows the deviation of the converging focuses of light rays with different wavelengths after passing through the lens. Fig. 33 is an astigmatism curve representing meridional field curvature and sagittal field curvature of an imaging optical lens system according to a seventh embodiment of the present application. Fig. 34 is a distortion curve of the optical imaging lens according to the seventh embodiment of the present application, which shows distortion magnitude values corresponding to different image heights. Fig. 35 is a chromatic aberration of magnification curve of an imaging optical lens according to a seventh embodiment of the present application, which shows the deviation of different image heights of light rays on an imaging surface after passing through the lens. As can be seen from fig. 32 to 35, the optical imaging lens according to the seventh embodiment of the present application can achieve good imaging quality.

In summary, in examples 1 to 7 of the present application, each conditional expression satisfies the conditions in table 21 below:

conditions/examples	1	2	3	4	5	6	7
								f1/f	1.06	1.05	1.16	1.07	1.27	1.25	1.31
f3/(f6+f9)	1.67	1.46	1.36	1.59	1.39	1.38	1.38
								FOV(°)	83.5	83.2	85.6	83.7	89.1	88.5	90.2
f/f2	-0.30	-0.30	-0.21	-0.29	-0.13	-0.18	-0.16
								(R5+R6)/(R7+R8)	0.47	0.58	0.48	0.53	0.47	0.36	0.33
ET6/CT6	1.76	1.80	1.93	1.79	3.27	2.45	2.69
								ImgH ² /TTL(mm)	4.03	3.94	4.05	3.98	4.29	4.34	4.50
f/(R11+R12)	-1.37	-1.22	-0.89	-1.30	-0.73	-0.72	-0.63
								(CT4+CT5)/(CT6+CT7)	0.94	1.04	1.11	0.99	1.45	1.27	1.40
f7/R13	1.43	1.40	1.72	1.45	1.69	1.75	1.82
								DT12/DT32	0.90	0.91	0.92	0.90	0.85	0.91	0.90
(SAG81+SAG82)/(SAG91+SAG92)	1.14	1.65	1.71	1.37	1.26	1.24	1.07

TABLE 21

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. An optical imaging lens, wherein the number of lenses having optical power in the optical imaging lens is nine, and the nine lenses are, in order from an object side to an image side:

a first lens having a positive refractive power, an object-side surface of which is convex;

the second lens with negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface;

a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface, and the image side surface of the third lens is a concave surface;

a fourth lens with positive focal power, wherein the object side surface of the fourth lens is a convex surface, and the image side surface of the fourth lens is a concave surface;

the fifth lens with positive focal power has a convex object-side surface and a convex image-side surface;

a sixth lens element with negative refractive power having a concave object-side surface and a convex image-side surface;

a seventh lens element with positive refractive power having a convex object-side surface and a convex image-side surface;

an eighth lens element with positive refractive power having a concave object-side surface and a convex image-side surface;

a ninth lens element having a negative refractive power, the object-side surface of which is concave and the image-side surface of which is concave;

the lenses are independent of each other, and have air spaces on the optical axis;

wherein, ImgH, which is half the diagonal length of the effective pixel region on the imaging surface, satisfies the following relationship between the on-axis distance TTL from the object side surface of the first lens element to the imaging surface in the direction from the object side to the image side: 3.6mm<ImgH ² /TTL<4.6mm；

The total effective focal length f of the optical imaging lens, the curvature radius R11 of the object side surface of the sixth lens and the curvature radius R12 of the image side surface of the sixth lens meet the following condition: -1.4< f/(R11+ R12) < -0.4;

and a center thickness CT4 of the fourth lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and a center thickness CT7 of the seventh lens on the optical axis satisfy: 0.9< (CT4+ CT5)/(CT6+ CT7) < 1.5.

2. The optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens satisfy: 0.8< f1/f < 1.5; and an on-axis distance SAG81 between an intersection of the eighth lens object-side surface and the optical axis to an effective radius vertex of the eighth lens object-side surface, an on-axis distance SAG82 between an intersection of the eighth lens image-side surface and the optical axis to an effective radius vertex of the eighth lens image-side surface, an on-axis distance SAG91 between an intersection of the ninth lens object-side surface and the optical axis to an effective radius vertex of the ninth lens object-side surface, and an on-axis distance SAG92 between an intersection of the ninth lens image-side surface and the optical axis to an effective radius vertex of the ninth lens image-side surface satisfy: 1.0< (SAG81+ SAG82)/(SAG91+ SAG92) < 1.8.

3. The optical imaging lens of claim 1, wherein an effective focal length f3 of the third lens, an effective focal length f6 of the sixth lens, and an effective focal length f9 of the ninth lens satisfy: 1.2< f3/(f6+ f9) < 1.7; and the effective semi-aperture DT12 of the image side surface of the first lens and the effective semi-aperture DT32 of the image side surface of the third lens meet the following conditions: 0.8< DT12/DT32< 1.0.

4. The optical imaging lens of claim 1, wherein a maximum field angle FOV of the optical imaging lens satisfies: 82 ° < FOV <92 °; and the effective focal length f7 of the seventh lens and the curvature radius R13 of the object side surface of the seventh lens satisfy: 1.3< f7/R13< 1.9.

5. The optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens and the total effective focal length f of the optical imaging lens satisfy: -0.5< f/f2< 0.

6. The optical imaging lens of claim 1, wherein the radius of curvature of the third lens object-side surface R5, the radius of curvature of the third lens image-side surface R6, the radius of curvature of the fourth lens object-side surface R7, and the radius of curvature of the fourth lens image-side surface R8 satisfy: 0.2< (R5+ R6)/(R7+ R8) < 0.7.

7. The optical imaging lens of claim 1, wherein an edge thickness ET6 of the sixth lens and a center thickness CT6 of the sixth lens on an optical axis satisfy: 1.7< ET6/CT6< 3.3.

8. The optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens and the effective focal length f of the optical imaging lens satisfy: 0.8< f1/f < 1.5.

9. The optical imaging lens of claim 1, wherein an effective focal length f3 of the third lens, an effective focal length f6 of the sixth lens, and an effective focal length f9 of the ninth lens satisfy: 1.2< f3/(f6+ f9) < 1.7.