CN113866952B

CN113866952B - Optical imaging lens group

Info

Publication number: CN113866952B
Application number: CN202111174537.6A
Authority: CN
Inventors: 徐鑫垚; 李林阳; 吕赛锋; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2024-04-09
Anticipated expiration: 2041-10-09
Also published as: CN113866952A

Abstract

The application discloses an optical imaging lens group, it includes in order from the object side to the image side along the optical axis: 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 having optical power. The second lens has positive optical power; the object side surface of the sixth lens is a convex surface, and the image side surface is a concave surface; half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens group, the total effective focal length F of the optical imaging lens group, and the F-number Fno of the optical imaging lens group satisfy: 1 < ImgH/fXFNo < 1.3; and the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the total effective focal length f of the optical imaging lens group satisfy: 0.2 < |f2+f3|/f < 0.5.

Description

Optical imaging lens group

Technical Field

The present application relates to the field of optical elements, and in particular, to an optical imaging lens group.

Background

With the rapid development of science and technology, optical imaging lens groups suitable for portable electronic products such as smart phones are increasingly different, and the requirements of users on imaging characteristics of the optical imaging lens groups are increasingly higher. In order to improve the competitiveness of the products, many lens manufacturers begin to study how to balance the aberration generated by each lens by reasonably setting the characteristics of focal power, surface shape and the like of each lens, so as to improve the imaging quality of the optical imaging lens group and obtain the characteristics of large aperture, large image surface and the like.

Disclosure of Invention

An aspect of the present application provides an optical imaging lens group including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens having optical power. The second lens has positive optical power; the object side surface of the sixth lens is a convex surface, and the image side surface is a concave surface; half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens group, the total effective focal length F of the optical imaging lens group, and the F-number Fno of the optical imaging lens group can satisfy: 1 < ImgH/fXFNo < 1.3; and the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the total effective focal length f of the optical imaging lens group may satisfy: 0.2 < |f2+f3|/f < 0.5.

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

In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the combined focal length f12 of the first lens and the second lens may satisfy: 1 < (f 1-f 2)/f 12 < 3.

In one embodiment, the effective focal length f9 of the ninth lens and the combined focal length f89 of the eighth lens and the ninth lens may satisfy: 0.9 < f9/f89 < 1.2.

In one embodiment, the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, the edge thickness ET1 of the first lens, and the edge thickness ET2 of the second lens may satisfy: 0.6 < (CT 1-ET 1)/(CT 2-ET 2) < 1.4.

In one embodiment, the center thickness CT9 of the ninth lens on the optical axis and the edge thickness ET9 of the ninth lens may satisfy: CT9/ET9 < 1.

In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT92 of the image side surface of the ninth lens may satisfy: DT11/DT92 is less than 0.4 and less than 0.6.

In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT52 of the image side surface of the fifth lens may satisfy: DT11/DT52 is 0.9 < 1.1.

In one embodiment, 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 may satisfy: (R1-R2)/(R1+R2) | < 0.3.

In one embodiment, the radius of curvature R17 of the object side surface of the ninth lens, the radius of curvature R18 of the image side surface of the ninth lens, and the effective focal length f9 of the ninth lens may satisfy: -3 < (R18-R17)/f 9 < -2.

In one embodiment, a sum Σat of air intervals on the optical axis of any adjacent two lenses among the first lens to the ninth lens and a sum Σct of center thicknesses on the optical axis of the first lens to the ninth lens may satisfy: sigma AT/Sigma CT 0.6 < 0.9.

In one embodiment, the sum Σct of the center thickness CT1 of the first lens on the optical axis, the center thickness CT2 of the second lens on the optical axis, and the center thicknesses of the first to ninth lenses on the optical axis may satisfy: 0.3 < (CT1+CT2)/(Sigma CT < 0.4).

In one embodiment, the center thickness CT8 of the eighth lens on the optical axis, the center thickness CT9 of the ninth lens on the optical axis, and the air interval T89 of the eighth lens and the ninth lens on the optical axis may satisfy: 0.6 < (CT8+CT9)/T89 < 1.3.

In one embodiment, the abbe number V3 of the third lens, the abbe number V4 of the fourth lens, the abbe number V8 of the eighth lens, and the abbe number V9 of the ninth lens may satisfy: 1 < (v3+v4+v8)/v9 < 1.1.

In one embodiment, the distance TTL on the optical axis from the object side surface of the first lens element to the imaging surface of the optical imaging lens group, half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens group, and half of the maximum field angle Semi-FOV of the optical imaging lens group may satisfy: 1 < TTL/ImgH×tan (Semi-FOV) < 1.5.

In one embodiment, the total effective focal length f of the optical imaging lens group and the entrance pupil diameter EPD of the optical imaging lens group may satisfy: f/EPD < 1.6.

In one embodiment, the optical imaging lens group further includes a diaphragm disposed between the object side and the first lens, and a distance SD on the optical axis between the diaphragm and the image side of the ninth lens and a distance TTL on the optical axis between the object side of the first lens and the imaging plane of the optical imaging lens group may satisfy: 0.75 < SD/TTL < 0.85.

In one embodiment, the total effective focal length f of the optical imaging lens group and half the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens group may satisfy: imgH/f is more than 0.7 and less than 0.9.

In one embodiment, the entrance pupil diameter EPD of the optical imaging lens group and the distance SL of the stop to the imaging plane of the optical imaging lens group on the optical axis may satisfy: 0.5 < EPD/SL < 0.8.

In one embodiment, the fourth lens element has a convex object-side surface and a concave image-side surface.

Another aspect of the present application provides an optical imaging lens assembly, comprising, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens, and a ninth lens having optical power. The second lens has positive optical power; the object side surface of the sixth lens is a convex surface, and the image side surface is a concave surface; half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens group, the total effective focal length F of the optical imaging lens group, and the F-number Fno of the optical imaging lens group can satisfy: 1 < ImgH/fXFNo < 1.3; and the abbe number V3 of the third lens, the abbe number V4 of the fourth lens, the abbe number V8 of the eighth lens, and the abbe number V9 of the ninth lens may satisfy: 1 < (v3+v4+v8)/v9 < 1.1.

In one embodiment, the effective focal length f1 of the first lens, the effective focal length f2 of the second lens, and the total effective focal length f of the optical imaging lens group may satisfy: 0.2 < |f2+f3|/f < 0.5.

The optical imaging lens group which is applicable to portable electronic products and has at least one beneficial effect of high pixels, large aperture, large image surface, good imaging quality and the like is provided through reasonable distribution of optical power and optimization of optical parameters.

Drawings

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

fig. 1 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 1 of the present application;

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

fig. 3 shows a schematic structural view of an optical imaging lens group according to embodiment 2 of the present application;

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

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

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

fig. 7 shows a schematic structural view of an optical imaging lens group according to embodiment 4 of the present application;

fig. 8A to 8D show an on-axis chromatic aberration curve, a chromatic aberration curve of magnification, an astigmatism curve, and a distortion curve, respectively, of the optical imaging lens group of embodiment 4;

Fig. 9 shows a schematic structural view of an optical imaging lens group according to embodiment 5 of the present application;

fig. 10A to 10D show an on-axis chromatic aberration curve, a chromatic aberration curve of magnification, an astigmatism curve, and a distortion curve, respectively, of the optical imaging lens group of embodiment 5;

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

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

fig. 13 shows a schematic structural view of an optical imaging lens group according to embodiment 7 of the present application;

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

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

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

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 these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

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

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

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

It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, use of "may" means "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, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

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

The optical imaging lens group according to the exemplary embodiment of the present application may include nine lenses having optical power, which are 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, respectively. The nine lenses are arranged in order from the object side to the image side along the optical axis. Any two adjacent lenses among the first lens to the ninth lens can have a spacing distance therebetween.

In an exemplary embodiment, the optical imaging lens group further comprises a stop arranged between the object side and the first lens.

In an exemplary embodiment, the second lens may have positive optical power. The second lens has positive focal power, which is beneficial to increasing the angle of view and compressing the incident angle of light at the position of the diaphragm so as to reduce pupil aberration and improve imaging quality.

In an exemplary embodiment, the object-side surface of the sixth lens may be convex, and the image-side surface may be concave. This planar arrangement of the sixth lens can adjust aberration and improve imaging quality.

In an exemplary embodiment, the object-side surface of the fourth lens may be convex, and the image-side surface may be concave. This planar arrangement of the fourth lens can adjust aberration and improve imaging quality.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 1 < ImgH/f×fno < 1.3, wherein ImgH is half the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens group, F is the total effective focal length of the optical imaging lens group, and Fno is the F-number of the optical imaging lens group. Meets the requirements of 1 < ImgH/fXFNo < 1.3 and can realize the effects of large image surface and large aperture.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.2 < |f2+f3|/f < 0.5, where f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f is the total effective focal length of the optical imaging lens group. Satisfies 0.2 < |f2+f3|/f < 0.5, is beneficial to controlling the total effective focal length of the optical imaging lens group, is beneficial to enabling the optical imaging lens group to have the function of adjusting the light ray position, and is beneficial to shortening the total length of the optical imaging lens group.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 1 < (f 1-f 2)/f 12 < 3, wherein f1 is the effective focal length of the first lens, f2 is the effective focal length of the second lens, and f12 is the combined focal length of the first lens and the second lens. Satisfying 1 < (f 1-f 2)/f 12 < 3, is favorable for fine adjustment of spherical aberration of the lens group so as to reduce aberration of the on-axis view field.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.9 < f9/f89 < 1.2, wherein f9 is the effective focal length of the ninth lens and f89 is the combined focal length of the eighth lens and the ninth lens. Satisfies 0.9 < f9/f89 < 1.2, and can help to properly shorten the total length of the optical imaging lens group while correcting aberration so as to satisfy the light and thin requirements of the lens group.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.6 < (CT 1-ET 1)/(CT 2-ET 2) < 1.4, wherein CT1 is the center thickness of the first lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, ET1 is the edge thickness of the first lens, and ET2 is the edge thickness of the second lens. Satisfies 0.6 < (CT 1-ET 1)/(CT 2-ET 2) < 1.4, and is beneficial to the stability of the lens group structure.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: CT9/ET9 < 1, wherein CT9 is the center thickness of the ninth lens on the optical axis, and ET9 is the edge thickness of the ninth lens. The CT9/ET9 is smaller than 1, and the processing and assembling difficulty is reduced.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.4 < DT11/DT92 < 0.6, where DT11 is the maximum effective radius of the object side of the first lens and DT92 is the maximum effective radius of the image side of the ninth lens. Satisfies 0.4 < DT11/DT92 < 0.6, is helpful for correcting off-axis aberration, and realizes high image quality.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.9 < DT11/DT52 < 1.1, where DT11 is the maximum effective radius of the object side of the first lens and DT52 is the maximum effective radius of the image side of the fifth lens. Satisfies 0.9 < DT11/DT52 < 1.1, and is helpful for correcting off-axis aberration and realizing high image quality.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: (R1-R2)/(R1+R2) | < 0.3, wherein R1 is the radius of curvature of the object-side surface of the first lens and R2 is the radius of curvature of the image-side surface of the first lens. Satisfies (R1-R2)/(R1+R2) and is less than 0.3, is favorable for making the coma of the on-axis view field and the off-axis view field smaller, and makes the optical imaging lens group have good imaging quality.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: -3 < (R18-R17)/f 9 < -2, wherein R17 is the radius of curvature of the object-side surface of the ninth lens, R18 is the radius of curvature of the image-side surface of the ninth lens, and f9 is the effective focal length of the ninth lens. More specifically, R18, R17, and f9 may further satisfy: -3 < (R18-R17)/f 9 < -2.2. Satisfying-3 < (R18-R17)/f 9 < -2, is favorable for adjusting the overall optical power distribution of the lens group, is favorable for shortening the total length of the lens group, realizes miniaturization, and is favorable for balancing the tolerance sensitivity of the lens group.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: and 0.6 < ΣAT/ΣCT < 0.9, wherein ΣAT is the sum of air intervals on the optical axis of any adjacent two lenses in the first lens to the ninth lens, and ΣCT is the sum of the center thicknesses on the optical axis of the first lens to the ninth lens. Satisfies 0.6 < [ Sigma ] AT/[ Sigma ] CT < 0.9, is favorable for reasonably controlling the distortion range of the lens group, and ensures that the lens group has smaller distortion.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.3 < (CT1+CT2)/(Sigma CT < 0.4), wherein CT1 is the center thickness of the first lens on the optical axis, CT2 is the center thickness of the second lens on the optical axis, and Sigma CT is the sum of the center thicknesses of the first lens to the ninth lens on the optical axis. Satisfying 0.3 < (CT1+CT2)/(Sigma CT < 0.4) can improve the stability of the optical imaging lens group.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.6 < (CT8+CT9)/T89 < 1.3, wherein CT8 is the center thickness of the eighth lens on the optical axis, CT9 is the center thickness of the ninth lens on the optical axis, and T89 is the air gap of the eighth lens and the ninth lens on the optical axis. Satisfying 0.6 < (CT8+CT9)/T89 < 1.3, is favorable for controlling the field curvature contribution of each field of view of the optical imaging lens group within a reasonable range.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 1 < (v3+v4+v8)/V9 < 1.1, wherein V3 is the abbe number of the third lens, V4 is the abbe number of the fourth lens, V8 is the abbe number of the eighth lens, and V9 is the abbe number of the ninth lens. Satisfying 1 < (v3+v4+v8)/v9 < 1.1, the chromatic aberration of the optical imaging lens group can be made smaller.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 1 < TTL/ImgH×tan (Semi-FOV) < 1.5, wherein TTL is the distance on the optical axis between the object side surface of the first lens and the imaging surface of the optical imaging lens group, imgH is half the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens group, and Semi-FOV is half the maximum field angle of the optical imaging lens group. The total effective focal length of the optical imaging lens group can be controlled within a reasonable range when the TTL/ImgH multiplied by tan (Semi-FOV) is less than 1.5, and the lens group can be ensured to have a larger field angle and simultaneously have a large enough image plane to present more detail information of a shot scene. In an example, the Semi-FOV may satisfy the Semi-FOV > 37.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: f/EPD < 1.6, where f is the total effective focal length of the optical imaging lens group and EPD is the entrance pupil diameter of the optical imaging lens group. More specifically, f and EPD may further satisfy: 1.1 < f/EPD < 1.6. The F/EPD is smaller than 1.6, the optical imaging lens group has a large image plane and a smaller F number, the lens group can be ensured to have a large aperture imaging effect, and good imaging quality is achieved in a dark environment.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.75 < SD/TTL < 0.85, wherein SD is the distance between the aperture stop and the image side surface of the ninth lens element on the optical axis, and TTL is the distance between the object side surface of the first lens element and the imaging surface of the optical imaging lens assembly on the optical axis. Satisfies 0.75 < SD/TTL < 0.85, and can effectively control aberration generated by the diaphragm.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.7 < ImgH/f < 0.9, where f is the total effective focal length of the optical imaging lens group and ImgH is half the diagonal length of the effective pixel area on the imaging face of the optical imaging lens group. Meets the requirement of 0.7 < ImgH/f < 0.9, can make the whole lens group lighter and thinner, and is favorable for realizing miniaturization. An optical imaging lens group according to the present application may have a large image plane characteristic, and in an exemplary embodiment, imgH may satisfy ImgH > 7.5mm. In addition, the optical imaging lens group according to the present application may also have a short optical length while having a large image plane characteristic, for example, TTL may be in the range of 11.50mm to 12.80 mm.

In an exemplary embodiment, an optical imaging lens group according to the present application may satisfy: 0.5 < EPD/SL < 0.8, wherein EPD is the entrance pupil diameter of the optical imaging lens group and SL is the distance on the optical axis between the diaphragm and the imaging plane of the optical imaging lens group. Satisfies 0.5 < EPD/SL < 0.8, and can effectively control coma, astigmatism, distortion, axial chromatic aberration and the like generated by the diaphragm.

In an exemplary embodiment, the effective focal length f1 of the first lens may be, for example, in the range of 19.96mm to 36.86mm, the effective focal length f2 of the second lens may be, for example, in the range of 10.7mm to 11.95mm, the effective focal length f3 of the third lens may be, for example, in the range of-16.04 mm to-13.98 mm, the effective focal length f5 of the fifth lens may be, for example, in the range of 49.24mm to 99.35mm, the effective focal length f7 of the seventh lens may be, for example, in the range of 9.59mm to 18.85mm, and the effective focal length f9 of the ninth lens may be, for example, in the range of-10.58 mm to-6.94 mm.

In an exemplary embodiment, the optical imaging lens group according to the present application further includes a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an imaging surface. The application provides an optical imaging lens group with characteristics of miniaturization, large image surface, large aperture, high pixel, high imaging quality and the like. The optical imaging lens group according to the above embodiment of the present application may employ a plurality of lenses, for example, nine lenses above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens, incident light rays can be effectively converged, the optical total length of the imaging lens is reduced, and the processability of the imaging lens is improved, so that the optical imaging lens group is more beneficial to production and processing.

In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface of the first lens to the image side surface of the ninth lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, at least one of an object side surface and an image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens, and the ninth lens is an aspherical mirror surface. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, the seventh lens, the eighth lens and the ninth lens are aspherical mirror surfaces.

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

Specific examples of the optical imaging lens group applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

Example 1

An optical imaging lens group according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 1 of the present application.

As shown in fig. 1, the optical imaging lens assembly sequentially includes, 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, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, filter E10, and imaging plane S21.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is convex. The eighth lens element E8 has negative refractive power, and has a concave object-side surface S15 and a concave image-side surface S16. The ninth lens element E9 has negative refractive power, and has a concave object-side surface S17 and a concave image-side surface S18. The filter E10 has an object side surface S19 and an image side surface S20. 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 parameter table of the optical imaging lens group of example 1, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm).

TABLE 1

In this example, the total effective focal length f of the optical imaging lens group is 9.93mm, the total length TTL of the optical imaging lens group (i.e., the distance on the optical axis from the object side surface S1 of the first lens E1 to the imaging surface S21 of the optical imaging lens group) is 12.50mm, half of the diagonal length ImgH of the effective pixel area on the imaging surface S21 of the optical imaging lens group is 8.11mm, half of the maximum field angle Semi-FOV of the optical imaging lens group is 38.40 °, and the entrance pupil diameter EPD of the optical imaging lens group is 7.32mm.

In embodiment 1, the object side surface and the image side surface of any one of the first lens E1 to the ninth lens E9 are aspherical, and the surface profile x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:

wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the aspherical i-th order. The following tables 2-1 and 2-2 give the higher order coefficients A that can be used for each of the aspherical mirror faces S1-S18 in example 1 ₄ 、A ₆ 、A ₈ 、A ₁₀ 、A ₁₂ 、A ₁₄ 、A ₁₆ 、A ₁₈ 、A ₂₀ And A ₂₂ 。

TABLE 2-1

Face number	A14	A16	A18	A20	A22
						S1	6.0960E-08	-5.0456E-09	2.1300E-10	-3.6723E-12	0.0000E+00
S2	-5.3462E-07	2.4655E-08	-5.8893E-10	5.4097E-12	0.0000E+00
						S3	-4.5833E-07	1.4031E-08	-3.7342E-11	-4.8225E-12	0.0000E+00
S4	-3.8697E-07	1.9034E-08	-5.6167E-10	7.4910E-12	0.0000E+00
						S5	-4.8377E-07	3.2458E-08	-1.4355E-09	2.7258E-11	0.0000E+00
S6	2.4162E-06	-2.5389E-07	1.4740E-08	-3.6320E-10	0.0000E+00
						S7	3.2421E-06	-3.2438E-07	1.8060E-08	-4.3223E-10	0.0000E+00
S8	1.7995E-06	-1.6594E-07	8.5118E-09	-1.9004E-10	0.0000E+00
						S9	2.5766E-06	-1.7605E-07	6.2069E-09	-8.5186E-11	0.0000E+00
S10	4.2152E-08	1.9343E-08	-1.6702E-09	4.3755E-11	0.0000E+00
						S11	2.1322E-06	-1.3636E-07	4.8205E-09	-7.1948E-11	0.0000E+00
S12	3.2214E-06	-2.0055E-07	7.2662E-09	-1.3162E-10	7.6736E-13
						S13	1.1949E-06	-5.3228E-08	1.3261E-09	-1.4171E-11	0.0000E+00
S14	1.0750E-06	-3.8333E-08	7.4566E-10	-6.0890E-12	0.0000E+00
						S15	6.0400E-07	-1.9966E-08	3.6047E-10	-2.7228E-12	0.0000E+00
S16	9.5905E-08	-2.6097E-09	3.8555E-11	-2.3720E-13	0.0000E+00
						S17	-1.1998E-08	3.3250E-10	-4.5261E-12	2.4405E-14	0.0000E+00
S18	-3.5763E-09	7.8197E-11	-9.1987E-13	4.5152E-15	0.0000E+00

TABLE 2-2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 1, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 2B shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 1, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 2C shows an astigmatism curve of the optical imaging lens group of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2D shows distortion curves of the optical imaging lens group of embodiment 1, which represent distortion magnitude values corresponding to different angles of view. As can be seen from fig. 2A to 2D, the optical imaging lens set provided in embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens group according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration diagram of an optical imaging lens group according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens assembly sequentially includes, 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, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, filter E10, and imaging plane S21.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is convex. The eighth lens element E8 has negative refractive power, and has a concave object-side surface S15 and a concave image-side surface S16. The ninth lens element E9 has negative refractive power, and has a concave object-side surface S17 and a concave image-side surface S18. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

In this example, the total effective focal length f of the optical imaging lens group is 9.80mm, the total length TTL of the optical imaging lens group is 12.50mm, half the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 8.16mm, half the maximum field angle Semi-FOV of the optical imaging lens group is 38.98 °, and the entrance pupil diameter EPD of the optical imaging lens group is 6.99mm.

Table 3 shows the basic parameter table of the optical imaging lens group of example 2, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 4-1, 4-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.

TABLE 3 Table 3

Face number	A4	A6	A8	A10	A12
						S1	-3.2986E-04	-5.9502E-05	2.2396E-05	-5.4568E-06	7.3585E-07
S2	-2.1884E-03	-7.2610E-05	4.4288E-05	-1.0663E-05	1.3851E-06
						S3	-2.0816E-03	4.3808E-05	-4.3588E-05	1.8892E-05	-4.3102E-06
S4	8.9448E-03	-5.7439E-03	1.7860E-03	-3.3350E-04	3.9521E-05
						S5	1.4638E-02	-6.9881E-03	2.2231E-03	-4.6891E-04	6.7210E-05
S6	5.8940E-03	-1.8683E-03	5.5606E-04	-1.2022E-04	1.5557E-05
						S7	-9.0616E-03	1.3560E-03	-6.4112E-04	2.0786E-04	-4.8508E-05
S8	-6.9461E-03	1.1924E-03	-5.5834E-04	1.7283E-04	-3.8367E-05
						S9	-6.5759E-03	8.4015E-04	-4.0058E-04	1.1811E-04	-2.2744E-05
S10	-8.1912E-03	9.7399E-04	-2.6972E-04	4.5464E-05	-4.1349E-06
						S11	-1.1931E-02	2.1128E-03	-3.8082E-04	5.2500E-05	-6.1125E-06
S12	-1.3465E-02	1.8823E-03	-2.2642E-04	4.4576E-06	4.0771E-06
						S13	-4.4260E-03	3.0132E-04	1.9298E-05	-2.3680E-05	4.2899E-06
S14	-7.5484E-03	4.3860E-03	-1.0956E-03	1.4575E-04	-1.2001E-05
						S15	-1.1771E-02	4.4726E-03	-1.1141E-03	1.5823E-04	-1.3848E-05
S16	-4.5939E-03	9.1281E-04	-2.3057E-04	3.0909E-05	-2.4366E-06
						S17	-1.1613E-02	1.9909E-03	-2.6664E-04	2.2169E-05	-1.0959E-06
S18	-3.9019E-03	2.1826E-04	-5.5447E-07	-1.2591E-06	1.1227E-07

TABLE 4-1

TABLE 4-2

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 2, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 4B shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 4C shows an astigmatism curve of the optical imaging lens group of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4D shows distortion curves of the optical imaging lens group of embodiment 2, which represent distortion magnitude values corresponding to different angles of view. As can be seen from fig. 4A to 4D, the optical imaging lens group provided in embodiment 2 can achieve good imaging quality.

Example 3

An optical imaging lens group according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural view of an optical imaging lens group according to embodiment 3 of the present application.

As shown in fig. 5, the optical imaging lens assembly sequentially includes, 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, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, filter E10, and imaging plane S21.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is convex. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is concave and an image-side surface S16 thereof is convex. The ninth lens element E9 has negative refractive power, and has a concave object-side surface S17 and a concave image-side surface S18. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

In this example, the total effective focal length f of the optical imaging lens group is 9.78mm, the total length TTL of the optical imaging lens group is 12.50mm, half the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 8.16mm, half the maximum field angle Semi-FOV of the optical imaging lens group is 39.07 °, and the entrance pupil diameter EPD of the optical imaging lens group is 6.85mm.

Table 5 shows the basic parameter table of the optical imaging lens group of example 3, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 6-1, 6-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.

TABLE 5

TABLE 6-1

Face number	A14	A16	A18	A20	A22
						S1	-1.5872E-07	1.1337E-08	-4.3056E-10	6.4759E-12	0.0000E+00
S2	-1.1394E-07	5.5139E-09	-1.5769E-10	2.0066E-12	0.0000E+00
						S3	2.8438E-07	-2.3983E-08	9.9733E-10	-1.6036E-11	0.0000E+00
S4	-1.7327E-06	8.8794E-08	-2.6724E-09	3.5776E-11	0.0000E+00
						S5	-4.0839E-06	2.7219E-07	-1.0389E-08	1.6965E-10	0.0000E+00
S6	7.2725E-08	-8.1691E-08	7.9245E-09	-2.4972E-10	0.0000E+00
						S7	6.1074E-06	-5.6592E-07	2.7813E-08	-5.6451E-10	0.0000E+00
S8	5.2751E-06	-4.7504E-07	2.2688E-08	-4.4577E-10	0.0000E+00
						S9	3.0673E-06	-2.2820E-07	9.0620E-09	-1.4519E-10	0.0000E+00
S10	9.7298E-07	-5.1922E-08	1.3871E-09	-1.2155E-11	0.0000E+00
						S11	1.1300E-06	-7.4500E-08	2.8731E-09	-4.7337E-11	0.0000E+00
S12	-1.9063E-06	1.7914E-07	-1.0077E-08	3.1749E-10	-4.2902E-12
						S13	-8.0827E-07	3.7024E-08	-8.9066E-10	8.7334E-12	0.0000E+00
S14	6.5672E-09	2.8461E-09	-1.1177E-10	1.3708E-12	0.0000E+00
						S15	3.8014E-07	-1.2633E-08	2.3129E-10	-1.7964E-12	0.0000E+00
S16	5.6506E-08	-1.6005E-09	2.4161E-11	-1.5061E-13	0.0000E+00
						S17	4.6668E-08	-8.8997E-10	9.4997E-12	-4.3697E-14	0.0000E+00
S18	-1.9302E-09	5.2088E-11	-6.5520E-13	3.2084E-15	0.0000E+00

TABLE 6-2

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 3, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 6B shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 3, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 6C shows an astigmatism curve of the optical imaging lens group of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6D shows distortion curves of the optical imaging lens group of embodiment 3, which represent distortion magnitude values corresponding to different angles of view. As can be seen from fig. 6A to 6D, the optical imaging lens group provided in embodiment 3 can achieve good imaging quality.

Example 4

An optical imaging lens group according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural view of an optical imaging lens group according to embodiment 4 of the present application.

As shown in fig. 7, the optical imaging lens assembly sequentially includes, 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, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, filter E10, and imaging plane S21.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The ninth lens element E9 has negative refractive power, and has a concave object-side surface S17 and a concave image-side surface S18. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

In this example, the total effective focal length f of the optical imaging lens group is 10.42mm, the total length TTL of the optical imaging lens group is 12.50mm, half the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 8.16mm, half the maximum field angle Semi-FOV of the optical imaging lens group is 37.23 °, and the entrance pupil diameter EPD of the optical imaging lens group is 6.97mm.

Table 7 shows the basic parameter table of the optical imaging lens group of example 4, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 8-1, 8-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface profiles can be defined by the formula (1) given in example 1 above.

TABLE 7

TABLE 8-1

Face number	A14	A16	A18	A20	A22
						S1	-4.3719E-07	3.2731E-08	-1.2876E-09	2.0252E-11	0.0000E+00
S2	-3.1169E-07	2.5131E-08	-1.0968E-09	1.9328E-11	0.0000E+00
						S3	-1.5431E-07	1.4409E-08	-6.9851E-10	1.3460E-11	0.0000E+00
S4	-2.9764E-06	1.7761E-07	-6.0032E-09	8.7350E-11	0.0000E+00
						S5	-4.0443E-06	2.4897E-07	-8.4355E-09	1.1927E-10	0.0000E+00
S6	3.0569E-06	-3.8772E-07	2.5022E-08	-6.4567E-10	0.0000E+00
						S7	4.0849E-06	-3.3714E-07	1.4215E-08	-2.4242E-10	0.0000E+00
S8	2.8080E-06	-1.9306E-07	5.3466E-09	-1.1961E-11	0.0000E+00
						S9	2.9304E-06	-1.9322E-07	5.0330E-09	7.5406E-12	0.0000E+00
S10	1.1506E-06	-6.3400E-08	1.4653E-09	-1.0168E-12	0.0000E+00
						S11	3.9656E-06	-2.4680E-07	8.6712E-09	-1.2901E-10	0.0000E+00
S12	1.0098E-05	-7.7782E-07	3.7689E-08	-1.0276E-09	1.1930E-11
						S13	-5.2039E-08	2.4811E-09	-2.5603E-11	-3.3126E-13	0.0000E+00
S14	2.1416E-07	-8.2557E-09	1.7008E-10	-1.4501E-12	0.0000E+00
						S15	1.6578E-07	-6.0807E-09	1.1827E-10	-9.4074E-13	0.0000E+00
S16	4.2678E-08	-1.2453E-09	1.9163E-11	-1.2044E-13	0.0000E+00
						S17	4.4209E-08	-8.2430E-10	8.5449E-12	-3.7996E-14	0.0000E+00
S18	1.8251E-08	-2.9685E-10	2.6673E-12	-1.0194E-14	0.0000E+00

TABLE 8-2

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 4, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 8B shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 8C shows an astigmatism curve of the optical imaging lens group of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8D shows distortion curves of the optical imaging lens group of embodiment 4, which represent distortion magnitude values corresponding to different angles of view. As can be seen from fig. 8A to 8D, the optical imaging lens group provided in embodiment 4 can achieve good imaging quality.

Example 5

An optical imaging lens group according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural view of an optical imaging lens group according to embodiment 5 of the present application.

As shown in fig. 9, the optical imaging lens assembly sequentially includes, 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, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, filter E10, and imaging plane S21.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The ninth lens element E9 has negative refractive power, and has a concave object-side surface S17 and a concave image-side surface S18. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

In this example, the total effective focal length f of the optical imaging lens group is 9.22mm, the total length TTL of the optical imaging lens group is 11.50mm, half the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 7.50mm, half the maximum field angle Semi-FOV of the optical imaging lens group is 38.37 °, and the entrance pupil diameter EPD of the optical imaging lens group is 6.12mm.

Table 9 shows the basic parameter table of the optical imaging lens group of example 5, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 10-1, 10-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, where each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.

TABLE 9

Face number	A4	A6	A8	A10	A12
						S1	-5.5743E-01	-1.1499E-01	-2.2522E-02	-3.1062E-02	-3.1650E-03
S2	-5.3091E-01	1.7886E-01	-3.0555E-02	-3.7785E-02	6.6031E-03
						S3	-2.0915E-01	2.5094E-01	-8.9117E-02	-4.4431E-02	1.9460E-02
S4	-1.4366E-01	8.0218E-02	-1.6797E-02	-1.5803E-02	1.8369E-02
						S5	6.5939E-01	7.2239E-03	3.7149E-02	-1.8985E-02	-4.4722E-03
S6	8.4871E-01	1.8088E-01	7.5679E-02	-4.2735E-03	-1.2184E-02
						S7	-7.8377E-01	1.4705E-01	-6.0657E-03	-4.0652E-02	-1.7876E-02
S8	-5.7609E-01	1.8932E-01	2.6806E-02	-1.8960E-02	-5.7556E-03
						S9	-6.7988E-01	4.4568E-02	1.1507E-02	-2.0221E-03	8.1122E-03
S10	-1.0408E+00	1.2030E-01	3.1554E-02	3.2829E-03	-1.1270E-03
						S11	-2.0433E+00	-5.3724E-02	6.4042E-02	-2.6153E-03	-6.4008E-02
S12	-2.2132E+00	2.8741E-01	-1.1401E-02	2.2190E-02	-3.3876E-02
						S13	-1.5586E+00	1.4958E-01	4.6496E-02	-3.4233E-02	5.2136E-03
S14	-5.0535E-01	-2.0607E-01	6.7602E-02	-4.9607E-02	8.0340E-03
						S15	-5.0535E-01	-2.0607E-01	6.7602E-02	-4.9607E-02	8.0340E-03
S16	-1.8609E+00	3.3803E-02	4.5809E-02	-2.6591E-02	-8.7819E-03
						S17	-5.9360E-01	5.4015E-01	-2.4245E-01	6.2822E-02	-8.8511E-03
S18	-4.0690E+00	1.1389E+00	-2.5323E-01	1.2800E-01	1.0284E-02

TABLE 10-1

TABLE 10-2

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens group of embodiment 5, which indicates a convergent focus deviation after light rays of different wavelengths pass through the lens. Fig. 10B shows a magnification chromatic aberration curve of the optical imaging lens group of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. Fig. 10C shows an astigmatism curve of the optical imaging lens group of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10D shows a distortion curve of the optical imaging lens group of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. As can be seen from fig. 10A to 10D, the optical imaging lens group provided in embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens group according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens group according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens assembly sequentially includes, 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, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, filter E10, and imaging plane S21.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is convex. The eighth lens element E8 has positive refractive power, wherein an object-side surface S15 thereof is concave and an image-side surface S16 thereof is convex. The ninth lens element E9 has negative refractive power, and has a concave object-side surface S17 and a concave image-side surface S18. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

In this example, the total effective focal length f of the optical imaging lens group is 9.91mm, the total length TTL of the optical imaging lens group is 12.50mm, half the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 8.11mm, half the maximum field angle Semi-FOV of the optical imaging lens group is 38.45 °, and the entrance pupil diameter EPD of the optical imaging lens group is 7.64mm.

Table 11 shows the basic parameter table of the optical imaging lens group of example 6, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 12-1, 12-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.

TABLE 11

TABLE 12-1

Face number	A14	A16	A18	A20	A22
						S1	1.5799E-07	-1.0464E-08	3.7917E-10	-5.8242E-12	0.0000E+00
S2	8.6333E-08	-1.2163E-08	5.7260E-10	-9.6666E-12	0.0000E+00
						S3	6.1024E-07	-5.1997E-08	2.1433E-09	-3.4516E-11	0.0000E+00
S4	-1.2132E-06	7.4166E-08	-2.4882E-09	3.5148E-11	0.0000E+00
						S5	-2.8063E-06	1.9157E-07	-7.3251E-09	1.1845E-10	0.0000E+00
S6	-1.2071E-06	7.0024E-08	-1.9197E-09	1.2894E-11	0.0000E+00
						S7	1.5811E-07	-2.1868E-08	1.4453E-09	-3.8023E-11	0.0000E+00
S8	1.5773E-06	-1.4511E-07	7.2753E-09	-1.5572E-10	0.0000E+00
						S9	3.1944E-06	-2.1825E-07	7.8984E-09	-1.1677E-10	0.0000E+00
S10	-1.2906E-07	3.0256E-08	-2.0501E-09	4.9172E-11	0.0000E+00
						S11	2.1022E-06	-1.3550E-07	4.6995E-09	-6.7676E-11	0.0000E+00
S12	4.4776E-06	-3.0705E-07	1.2651E-08	-2.8345E-10	2.6165E-12
						S13	1.9286E-06	-9.5531E-08	2.5889E-09	-2.9511E-11	0.0000E+00
S14	9.7286E-07	-3.7069E-08	7.6116E-10	-6.5017E-12	0.0000E+00
						S15	6.9411E-07	-2.3403E-08	4.2644E-10	-3.2322E-12	0.0000E+00
S16	1.6569E-07	-4.6035E-09	6.8788E-11	-4.2542E-13	0.0000E+00
						S17	-2.0340E-08	5.4387E-10	-7.3767E-12	4.0378E-14	0.0000E+00
S18	-1.0694E-09	8.7242E-12	5.0074E-14	-8.9786E-16	0.0000E+00

TABLE 12-2

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

Example 7

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

As shown in fig. 13, the optical imaging lens assembly sequentially includes, 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, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, filter E10, and imaging plane S21.

The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is convex. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is concave and an image-side surface S16 thereof is convex. The ninth lens element E9 has negative refractive power, and has a concave object-side surface S17 and a concave image-side surface S18. The filter E10 has an object side surface S19 and an image side surface S20. Light from the object sequentially passes through the respective surfaces S1 to S20 and is finally imaged on the imaging surface S21.

In this example, the total effective focal length f of the optical imaging lens group is 9.46mm, the total length TTL of the optical imaging lens group is 12.79mm, half the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 8.11mm, half the maximum field angle Semi-FOV of the optical imaging lens group is 39.71 °, and the entrance pupil diameter EPD of the optical imaging lens group is 7.90mm.

Table 13 shows the basic parameter table of the optical imaging lens group of example 7, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 14-1, 14-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.

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TABLE 13

Face number	A4	A6	A8	A10	A12
						S1	-2.3934E-04	7.4893E-05	-4.0958E-05	1.0868E-05	-1.7420E-06
S2	-1.2717E-03	-1.3420E-04	1.6820E-05	-6.7439E-07	-2.0852E-07
						S3	-1.0687E-03	-3.4169E-04	9.1851E-05	-2.0473E-05	2.9975E-06
S4	3.1196E-03	-1.3400E-03	2.4810E-04	-2.4520E-05	1.0931E-06
						S5	8.3633E-03	-2.1925E-03	4.2443E-04	-5.6622E-05	5.5392E-06
S6	4.5782E-03	-8.6539E-04	1.0850E-04	9.3479E-06	-7.4998E-06
						S7	-6.0813E-03	3.1638E-04	-8.1040E-05	6.4470E-06	-6.5054E-07
S8	-3.9079E-03	4.3156E-04	-2.0098E-04	5.7243E-05	-1.2241E-05
						S9	-3.1321E-03	8.1055E-04	-4.2160E-04	1.1869E-04	-2.0658E-05
S10	-7.4313E-03	1.1031E-03	-2.5864E-04	3.4137E-05	-2.6635E-06
						S11	-1.5253E-02	3.5434E-03	-8.3538E-04	1.5348E-04	-2.1667E-05
S12	-1.6865E-02	3.8677E-03	-9.2723E-04	1.7765E-04	-2.5266E-05
						S13	-6.9846E-03	2.4565E-03	-7.9848E-04	1.5956E-04	-2.0389E-05
S14	-3.1759E-03	1.6995E-03	-5.1646E-04	8.3164E-05	-8.2840E-06
						S15	-7.8845E-03	1.3990E-03	-3.9639E-04	6.6542E-05	-6.4900E-06
S16	-3.6063E-03	4.4208E-04	-1.6661E-04	2.9182E-05	-2.7464E-06
						S17	1.0806E-03	-2.6729E-03	5.3478E-04	-5.6160E-05	3.5013E-06
S18	2.2287E-04	-9.8696E-04	1.4516E-04	-1.1272E-05	5.2456E-07

TABLE 14-1

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TABLE 14-2

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

Example 8

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

As shown in fig. 15, the optical imaging lens assembly sequentially includes, 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, sixth lens E6, seventh lens E7, eighth lens E8, ninth lens E9, filter E10, and imaging plane S21.

In this example, the total effective focal length f of the optical imaging lens group is 9.41mm, the total length TTL of the optical imaging lens group is 11.70mm, half the diagonal length ImgH of the effective pixel region on the imaging surface S21 of the optical imaging lens group is 7.90mm, half the maximum field angle Semi-FOV of the optical imaging lens group is 39.90 °, and the entrance pupil diameter EPD of the optical imaging lens group is 6.28mm.

Table 15 shows a basic parameter table of the optical imaging lens group of example 8, in which the units of radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 16-1, 16-2 show the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface profiles can be defined by equation (1) given in example 1 above.

TABLE 15

TABLE 16-1

Face number	A14	A16	A18	A20	A22
						S1	1.7996E-02	1.4404E-02	4.6030E-03	4.9797E-04	0.0000E+00
S2	1.5429E-02	7.6994E-03	1.3645E-03	8.9995E-05	0.0000E+00
						S3	1.4038E-02	3.6285E-03	-1.0609E-04	-2.1514E-04	0.0000E+00
S4	1.0939E-02	5.4042E-03	1.3391E-03	7.9428E-04	0.0000E+00
						S5	-4.4735E-03	-3.4202E-03	-1.0675E-03	4.3700E-04	0.0000E+00
S6	-6.0272E-03	-2.6569E-03	-9.2307E-04	-1.2534E-04	0.0000E+00
						S7	-1.9909E-03	-1.1967E-03	-1.4110E-03	-7.3728E-04	0.0000E+00
S8	5.3501E-03	3.4495E-03	6.2903E-04	-3.1107E-04	0.0000E+00
						S9	1.0076E-02	3.1251E-03	-9.0937E-04	-9.5110E-04	0.0000E+00
S10	1.5139E-03	-8.1453E-04	-1.1103E-03	-8.5974E-04	0.0000E+00
						S11	-3.5884E-02	-2.0799E-02	-5.2290E-03	-1.1044E-03	0.0000E+00
S12	5.7448E-03	-5.1026E-03	8.9787E-04	8.7965E-04	4.4335E-04
						S13	5.8274E-03	6.6377E-06	-1.4747E-03	3.0310E-04	0.0000E+00
S14	3.7437E-04	1.7996E-03	2.6596E-05	-1.8583E-04	0.0000E+00
						S15	1.8862E-02	1.7160E-03	-3.8179E-03	-1.4118E-03	0.0000E+00
S16	1.9196E-03	1.3908E-03	6.5240E-04	-3.4077E-04	0.0000E+00
						S17	-1.5786E-03	-1.8269E-02	5.8556E-03	1.2289E-03	0.0000E+00
S18	3.2822E-03	-1.4907E-02	2.3211E-02	1.1688E-02	0.0000E+00

TABLE 16-2

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

In summary, examples 1 to 8 each satisfy the relationship shown in table 17.

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TABLE 17

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

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

Claims

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

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

the second lens has positive 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;

the third lens has negative focal power, and the image side surface of the third lens is a concave surface;

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

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

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

the ninth lens is provided with 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 number of lenses with focal power in the optical imaging lens group is nine;

half of the diagonal length ImgH of the effective pixel region on the imaging surface of the optical imaging lens group, the total effective focal length F of the optical imaging lens group, and the F-number Fno of the optical imaging lens group satisfy: 1 < ImgH/fXFNo < 1.3; and

the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy: 0.2 < |f2+f3|/f < 0.5.

2. The optical imaging lens group according to claim 1, wherein a center thickness CT8 of the eighth lens on the optical axis, a center thickness CT9 of the ninth lens on the optical axis, and an air interval T89 of the eighth lens and the ninth lens on the optical axis satisfy: 0.6 < (CT8+CT9)/T89 < 1.3.

3. The optical imaging lens group of claim 1, wherein an effective focal length f1 of the first lens and a combined focal length f12 of the first lens and the second lens satisfy: 1 < (f 1-f 2)/f 12 < 3.

4. The optical imaging lens group according to claim 1, wherein an effective focal length f9 of the ninth lens and a combined focal length f89 of the eighth lens and the ninth lens satisfy: 0.9 < f9/f89 < 1.2.

5. The optical imaging lens group according to claim 1, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, an edge thickness ET1 of the first lens, and an edge thickness ET2 of the second lens satisfy: 0.6 < (CT 1-ET 1)/(CT 2-ET 2) < 1.4.

6. The optical imaging lens group according to claim 1, wherein a center thickness CT9 of the ninth lens on the optical axis and an edge thickness ET9 of the ninth lens satisfy: CT9/ET9 is less than or equal to 0.15 and less than 1.

7. The optical imaging lens assembly of claim 1, wherein a maximum effective radius DT11 of an object-side surface of the first lens and a maximum effective radius DT92 of an image-side surface of the ninth lens satisfy: DT11/DT92 is less than 0.4 and less than 0.6.

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

9. The optical imaging lens group of claim 1, wherein 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: (R1-R2)/(R1+R2) is less than or equal to 0.10 and less than 0.3.

10. The optical imaging lens group according to claim 1, wherein a radius of curvature R17 of an object side surface of the ninth lens, a radius of curvature R18 of an image side surface of the ninth lens, and an effective focal length f9 of the ninth lens satisfy: -3 < (R18-R17)/f 9 < -2.

11. The optical imaging lens group according to claim 1, wherein a sum Σat of air intervals on the optical axis of any adjacent two lenses of the first to ninth lenses and a sum Σct of center thicknesses on the optical axis of the first to ninth lenses satisfy: sigma AT/Sigma CT 0.6 < 0.9.

12. The optical imaging lens group according to claim 1, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a sum Σct of center thicknesses of the first lens to the ninth lens on the optical axis satisfy: 0.3 < (CT1+CT2)/(Sigma CT < 0.4).

13. The optical imaging lens group according to claim 1, wherein an abbe number V3 of the third lens, an abbe number V4 of the fourth lens, an abbe number V8 of the eighth lens, and an abbe number V9 of the ninth lens satisfy: 1 < (v3+v4+v8)/v9 < 1.1.

14. The optical imaging lens assembly of any of claims 1-13, wherein an object-side surface of said fourth lens element is convex and an image-side surface is concave.

15. The optical imaging lens group of any of claims 1-13, wherein a distance TTL on the optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens group and half of a maximum field angle Semi-FOV of the optical imaging lens group satisfy: 1 < TTL/ImgH×tan (Semi-FOV) < 1.5.

16. The optical imaging lens group of any of claims 1-13, wherein an entrance pupil diameter EPD of the optical imaging lens group satisfies: 1.1 < f/EPD < 1.6.

17. The optical imaging lens group according to any one of claims 1 to 13, further comprising a stop disposed between the object side and the first lens,

The distance SD between the aperture stop and the image side surface of the ninth lens on the optical axis and the distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens group on the optical axis satisfy the following conditions: 0.75 < SD/TTL < 0.85.

18. The optical imaging lens group of any of claims 1-13, wherein the optical imaging lens group satisfies: imgH/f is more than 0.7 and less than 0.9.

19. The optical imaging lens group of claim 17, wherein an entrance pupil diameter EPD of the optical imaging lens group and a distance SL of the stop to an imaging surface of the optical imaging lens group on the optical axis satisfy: 0.5 < EPD/SL < 0.8.

20. The optical imaging lens assembly sequentially comprises, from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, an eighth lens and a ninth lens having optical power, characterized in that,

the abbe number V3 of the third lens, the abbe number V4 of the fourth lens, the abbe number V8 of the eighth lens, and the abbe number V9 of the ninth lens satisfy: 1 < (v3+v4+v8)/v9 < 1.1.

21. The optical imaging lens group according to claim 20, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, and a sum Σct of center thicknesses of the first lens to the ninth lens on the optical axis satisfy: 0.3 < (CT1+CT2)/(Sigma CT < 0.4).

22. The optical imaging lens group according to claim 20, wherein a center thickness CT8 of the eighth lens on the optical axis, a center thickness CT9 of the ninth lens on the optical axis, and an air interval T89 of the eighth lens and the ninth lens on the optical axis satisfy: 0.6 < (CT8+CT9)/T89 < 1.3.

23. The optical imaging lens group of claim 20, wherein an effective focal length f1 of the first lens, an effective focal length f2 of the second lens, and a combined focal length f12 of the first lens and the second lens satisfy: 1 < (f 1-f 2)/f 12 < 3.

24. The optical imaging lens group of claim 20, wherein an effective focal length f9 of the ninth lens and a combined focal length f89 of the eighth lens and the ninth lens satisfy: 0.9 < f9/f89 < 1.2.

25. The optical imaging lens group according to claim 20, wherein a center thickness CT1 of the first lens on the optical axis, a center thickness CT2 of the second lens on the optical axis, an edge thickness ET1 of the first lens, and an edge thickness ET2 of the second lens satisfy: 0.6 < (CT 1-ET 1)/(CT 2-ET 2) < 1.4.

26. The optical imaging lens group according to claim 20, wherein a center thickness CT9 of the ninth lens on the optical axis and an edge thickness ET9 of the ninth lens satisfy: CT9/ET9 is less than or equal to 0.15 and less than 1.

27. The optical imaging lens assembly of claim 20, wherein a maximum effective radius DT11 of an object-side surface of the first lens and a maximum effective radius DT92 of an image-side surface of the ninth lens satisfy: DT11/DT92 is less than 0.4 and less than 0.6.

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

29. The optical imaging lens assembly of claim 20, wherein 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: (R1-R2)/(R1+R2) is less than or equal to 0.10 and less than 0.3.

30. The optical imaging lens assembly of claim 20, wherein a radius of curvature R17 of an object-side surface of the ninth lens, a radius of curvature R18 of an image-side surface of the ninth lens, and an effective focal length f9 of the ninth lens satisfy: -3 < (R18-R17)/f 9 < -2.

31. The optical imaging lens group according to claim 20, wherein a sum Σat of air intervals on the optical axis of any adjacent two lenses of the first to ninth lenses and a sum Σct of center thicknesses on the optical axis of the first to ninth lenses satisfy: sigma AT/Sigma CT 0.6 < 0.9.

32. The optical imaging lens assembly of any of claims 20-31, wherein an object-side surface of said fourth lens element is convex and an image-side surface is concave.

33. The optical imaging lens group of any of claims 20-31, wherein a distance TTL on the optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens group and half of a maximum field angle Semi-FOV of the optical imaging lens group satisfy: 1 < TTL/ImgH×tan (Semi-FOV) < 1.5.

34. The optical imaging lens group of any of claims 20-31, wherein an entrance pupil diameter EPD of said optical imaging lens group satisfies: 1.1 < f/EPD < 1.6.

35. The optical imaging lens group of any of claims 20-31, further comprising a stop disposed between the object side and the first lens,

36. The optical imaging lens group of any of claims 20-31, wherein said optical imaging lens group satisfies: imgH/f is more than 0.7 and less than 0.9.

37. The optical imaging lens group of claim 35, wherein an entrance pupil diameter EPD of the optical imaging lens group and a distance SL of the stop to an imaging surface of the optical imaging lens group on the optical axis satisfy: 0.5 < EPD/SL < 0.8.

38. The optical imaging lens assembly of claim 31, wherein an effective focal length f1 of said first lens and an effective focal length f2 of said second lens satisfy: 0.2 < |f2+f3|/f < 0.5.