CN213659081U - Image pickup lens assembly - Google Patents

Image pickup lens assembly Download PDF

Info

Publication number
CN213659081U
CN213659081U CN202023009923.3U CN202023009923U CN213659081U CN 213659081 U CN213659081 U CN 213659081U CN 202023009923 U CN202023009923 U CN 202023009923U CN 213659081 U CN213659081 U CN 213659081U
Authority
CN
China
Prior art keywords
lens
image
lens group
optical axis
imaging
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202023009923.3U
Other languages
Chinese (zh)
Inventor
翁小凤
闻人建科
戴付建
赵烈烽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Sunny Optics Co Ltd
Original Assignee
Zhejiang Sunny Optics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Sunny Optics Co Ltd filed Critical Zhejiang Sunny Optics Co Ltd
Priority to CN202023009923.3U priority Critical patent/CN213659081U/en
Application granted granted Critical
Publication of CN213659081U publication Critical patent/CN213659081U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Lenses (AREA)

Abstract

The present application discloses a photographing lens assembly, sequentially comprising, from an object side to an image side along an optical axis: a first lens having an optical power; a second lens having an optical power; a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface; a fourth lens having an optical power; a fifth lens element with a focal power, wherein the object-side surface of the fifth lens element is convex and the image-side surface of the fifth lens element is concave; a sixth lens having a refractive power, an image-side surface of which is concave; and a seventh lens having optical power. The total effective focal length f of the camera lens group and the entrance pupil diameter EPD of the camera lens group satisfy: f/EPD is less than or equal to 1.40.

Description

Image pickup lens assembly
Technical Field
The present application relates to the field of optical elements, and in particular, to a photographing lens assembly.
Background
With the continuous development of portable electronic products such as smart phones, higher and higher requirements are put forward on the imaging quality of the smart phones in the market. Meanwhile, users are pursuing not only smartphones with high-pixel camera lens groups, but also smartphones with camera lens groups applied thereto that can achieve the photographing effect of cameras. In particular, the large aperture characteristic is an important index for representing the shooting information and the energy transfer capability of the shooting lens group. The camera lens group with the large aperture characteristic can obtain larger light input quantity, can ensure good imaging illumination intensity in the camera shooting identification process, and can improve the identification accuracy.
How to reasonably set the technical parameters such as the focal power and the surface type of each lens in the lens group to make the camera lens group applied to the portable electronic product have the characteristics of large aperture and the like while meeting the requirement of miniaturization is one of the problems to be solved by many lens designers at present.
SUMMERY OF THE UTILITY MODEL
An aspect of the present application provides an image capturing lens assembly, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having an optical power; a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface; a fourth lens having an optical power; a fifth lens element with a focal power, wherein the object-side surface of the fifth lens element is convex and the image-side surface of the fifth lens element is concave; a sixth lens having a refractive power, an image-side surface of which is concave; and a seventh lens having optical power. The total effective focal length f of the camera lens group and the entrance pupil diameter EPD of the camera lens group can satisfy: f/EPD is less than or equal to 1.40.
In one embodiment, the object-side surface of the first lens element to the image-side surface of the seventh lens element has at least one aspherical mirror surface.
In one embodiment, the total effective focal length f of the image capturing lens group and the radius of curvature R5 of the object side surface of the third lens element satisfy: f/R5 is more than 0.1 and less than 0.8.
In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT21 of the object side surface of the second lens may satisfy: 0.6 < DT21/DT11 < 1.
In one embodiment, the central thickness CT1 of the first lens on the optical axis and the central thickness CT2 of the second lens on the optical axis may satisfy: 0.1 < CT2/CT1 < 0.4.
In one embodiment, a distance SAG21 on the optical axis from the intersection point of the object-side surface of the second lens and the optical axis to the effective radius vertex of the object-side surface of the second lens and a distance SAG22 on the optical axis from the intersection point of the image-side surface of the second lens and the optical axis to the effective radius vertex of the image-side surface of the second lens may satisfy: 0.1-SAG 21/SAG 22-0.7.
In one embodiment, the central thickness CT2 of the second lens on the optical axis and the edge thickness ET2 of the second lens can satisfy: 1 < ET2/CT2 < 2.6.
In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens may satisfy: 0.2 < R10/R9 < 1.
In one embodiment, the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens may satisfy: R7/R8 > 0.
In one embodiment, the effective focal length f3 of the third lens and the total effective focal length f of the image capturing lens group satisfy: -0.4 < f/f3 < 0.
In one embodiment, a distance SAG11 on the optical axis from the intersection point of the object-side surface of the first lens and the optical axis to the effective radius vertex of the object-side surface of the first lens and a distance SAG12 on the optical axis from the intersection point of the image-side surface of the first lens and the optical axis to the effective radius vertex of the image-side surface of the first lens may satisfy: 0 is more than SAG12/SAG11 and is less than or equal to 0.05.
In one embodiment, the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R12 of the image-side surface of the sixth lens may satisfy: R11/R12 is more than 0 and less than or equal to 0.25.
In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface of the image taking lens group on the optical axis and a half ImgH of a diagonal length of an effective pixel area of the image taking lens group may satisfy: TTL/ImgH is less than or equal to 1.60.
In one embodiment, a distance TTL between an object side surface of the first lens element and an imaging surface of the image pickup lens group on the optical axis and a distance T56 between the fifth lens element and the sixth lens element on the optical axis satisfy: 0 < (T56/TTL). times.10 < 0.5.
In one embodiment, half of the Semi-FOV of the maximum field angle of the image-taking lens group may satisfy: 0.6 < tan (Semi-FOV) < 1.
In another aspect, the present disclosure provides a photographing lens assembly, in order from an object side to an image side along an optical axis, comprising: a first lens having an optical power; a second lens having an optical power; a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface; a fourth lens having an optical power; a fifth lens element with a focal power, wherein the object-side surface of the fifth lens element is convex and the image-side surface of the fifth lens element is concave; a sixth lens having a refractive power, an image-side surface of which is concave; and a seventh lens having optical power. The curvature radius R7 of the object side surface of the fourth lens and the curvature radius R8 of the image side surface of the fourth lens can satisfy the following conditions: R7/R8 > 0.
In one embodiment, the total effective focal length f of the image capturing lens group and the radius of curvature R5 of the object side surface of the third lens element satisfy: f/R5 is more than 0.1 and less than 0.8.
In one embodiment, the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT21 of the object side surface of the second lens may satisfy: 0.6 < DT21/DT11 < 1.
In one embodiment, the central thickness CT1 of the first lens on the optical axis and the central thickness CT2 of the second lens on the optical axis may satisfy: 0.1 < CT2/CT1 < 0.4.
In one embodiment, a distance SAG21 on the optical axis from the intersection point of the object-side surface of the second lens and the optical axis to the effective radius vertex of the object-side surface of the second lens and a distance SAG22 on the optical axis from the intersection point of the image-side surface of the second lens and the optical axis to the effective radius vertex of the image-side surface of the second lens may satisfy: 0.1-SAG 21/SAG 22-0.7.
In one embodiment, the central thickness CT2 of the second lens on the optical axis and the edge thickness ET2 of the second lens can satisfy: 1 < ET2/CT2 < 2.6.
In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens may satisfy: 0.2 < R10/R9 < 1.
In one embodiment, the effective focal length f3 of the third lens and the total effective focal length f of the image capturing lens group satisfy: -0.4 < f/f3 < 0.
In one embodiment, a distance SAG11 on the optical axis from the intersection point of the object-side surface of the first lens and the optical axis to the effective radius vertex of the object-side surface of the first lens and a distance SAG12 on the optical axis from the intersection point of the image-side surface of the first lens and the optical axis to the effective radius vertex of the image-side surface of the first lens may satisfy: 0 is more than SAG12/SAG11 and is less than or equal to 0.05.
In one embodiment, the radius of curvature R11 of the object-side surface of the sixth lens and the radius of curvature R12 of the image-side surface of the sixth lens may satisfy: R11/R12 is more than 0 and less than or equal to 0.25.
In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface of the image taking lens group on the optical axis and a half ImgH of a diagonal length of an effective pixel area of the image taking lens group may satisfy: TTL/ImgH is less than or equal to 1.60.
In one embodiment, the total effective focal length f of the image capturing lens group and the entrance pupil diameter EPD of the image capturing lens group may satisfy: f/EPD is less than or equal to 1.40.
In one embodiment, a distance TTL between an object side surface of the first lens element and an imaging surface of the image pickup lens group on the optical axis and a distance T56 between the fifth lens element and the sixth lens element on the optical axis satisfy: 0 < (T56/TTL). times.10 < 0.5.
In one embodiment, half of the Semi-FOV of the maximum field angle of the image-taking lens group may satisfy: 0.6 < tan (Semi-FOV) < 1.
This application provides one kind through reasonable distribution focal power and optimization optical parameter, has large aperture, miniaturization and good image quality's the camera lens group applicable in portable electronic product.
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 shows a schematic configuration diagram of a photographing lens group according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the image capturing lens group of embodiment 1;
fig. 3 shows a schematic configuration diagram of a photographing lens group according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the image capturing lens group of embodiment 2;
fig. 5 is a schematic view showing the structure of a photographing lens group according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the image capturing lens group of embodiment 3;
fig. 7 is a schematic view showing the structure of a photographing lens group according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 4;
fig. 9 is a schematic view showing the structure of a photographing lens group according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 5;
fig. 11 is a schematic view showing the structure of a photographing lens group according to embodiment 6 of the present application; and
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the image capturing lens group of embodiment 6.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after 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 image capturing lens group according to an exemplary embodiment of the present application may include seven lenses having optical powers, which are a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens, respectively. The seven lenses are arranged along the optical axis in sequence from the object side to the image side. Any adjacent two lenses of the first lens to the seventh lens may have a spacing distance therebetween.
In an exemplary embodiment, the first lens may have a positive power or a negative power; the second lens may have a positive or negative optical power; the third lens can have negative focal power, and the object side surface of the third lens can be a convex surface; the fourth lens may have a positive power or a negative power; the fifth lens can have positive focal power or negative focal power, the object side surface of the fifth lens can be a convex surface, and the image side surface of the fifth lens can be a concave surface; the sixth lens can have positive focal power or negative focal power, and the image side surface of the sixth lens can be a concave surface; and the seventh lens may have a positive power or a negative power.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: f/EPD is less than or equal to 1.40, wherein f is the total effective focal length of the shooting lens group, and EPD is the entrance pupil diameter of the shooting lens group. The F/EPD is less than or equal to 1.40, the F number of the camera lens group can be less than 1.40, the camera lens group has the characteristic of large aperture, the camera lens group can obtain larger light input amount, good imaging illumination intensity is ensured in the camera shooting process, the camera lens group can better meet the shooting requirement in environments with insufficient light such as cloudy days, dusk and the like, and the image resolving power of the camera lens group can be improved.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0.1 < f/R5 < 0.8, where f is the total effective focal length of the image pickup lens group, and R5 is the radius of curvature of the object side surface of the third lens element. More specifically, f and R5 further satisfy: f/R5 is more than 0.3 and less than 0.6. The f/R5 is more than 0.1 and less than 0.8, which is beneficial to correcting spherical aberration and reducing the sensitivity of the central area visual field. If the value of f/R5 is too large, the convergence of the incident light on the object side of the third lens element is reduced, and the image quality is easily degraded.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0.6 < DT21/DT11 < 1, where DT11 is the maximum effective radius of the object-side surface of the first lens and DT21 is the maximum effective radius of the object-side surface of the second lens. More specifically, DT21 and DT11 further satisfy: 0.8 < DT21/DT11 < 1. The requirements of DT21/DT11 being more than 0.6 and less than 1 are met, the size of the front end of the lens group is favorably reduced, the whole lens group is lighter and thinner, the range of incident light is favorably and reasonably limited, light with poor edge quality is eliminated, the off-axis aberration is reduced, and the resolving power of the lens group is effectively improved.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0.1 < CT2/CT1 < 0.4, wherein CT1 is the central thickness of the first lens on the optical axis, and CT2 is the central thickness of the second lens on the optical axis. More specifically, CT2 and CT1 further satisfy: 0.2 < CT2/CT1 < 0.4. The requirements of 0.1 < CT2/CT1 < 0.4 are met, the assembly process of the lens is ensured, the miniaturization of the camera lens group is realized, and the processing sensitivity of the camera lens group is reduced.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0.1 and SAG21/SAG22 and 0.7, wherein SAG21 is the distance on the optical axis from the intersection point of the object side surface of the second lens and the optical axis to the effective radius vertex of the object side surface of the second lens, and SAG22 is the distance on the optical axis from the intersection point of the image side surface of the second lens and the optical axis to the effective radius vertex of the image side surface of the second lens. More specifically, SAG21 and SAG22 further may satisfy: 0.3-SAG 21/SAG 22-0.7. The requirements that SAG21/SAG22 is more than or equal to 0.1 and less than or equal to 0.7 are met, the field curvature, the on-axis spherical aberration and the chromatic spherical aberration of the photographing lens group are favorably and effectively balanced, and the photographing lens group is favorably enabled to have good imaging quality and lower sensitivity, so that the processability of the photographing lens group can be better ensured.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 1 < ET2/CT2 < 2.6, wherein CT2 is the central thickness of the second lens on the optical axis and ET2 is the edge thickness of the second lens. More specifically, ET2 and CT2 further satisfy: 1.3 < ET2/CT2 < 2.6. The requirements that ET2/CT2 is more than 1 and less than 2.6 are met, the processing, forming and assembling characteristics of the second lens are favorably ensured, so that the camera lens group obtains good imaging quality, and the front end of the camera lens group is favorably ensured to be small in size.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0.2 < R10/R9 < 1, wherein R9 is a radius of curvature of an object-side surface of the fifth lens, and R10 is a radius of curvature of an image-side surface of the fifth lens. More specifically, R10 and R9 may further satisfy: 0.4 < R10/R9 < 1. The requirement that R10/R9 is more than 0.2 and less than 1 is met, the deflection angle of light rays passing through the fifth lens is favorably controlled, the sensitivity of the lens group is favorably and effectively reduced, the lens group is ensured to have good processing performance, and meanwhile, the curvature of field contribution of the lens group can be controlled within a reasonable range.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: R7/R8 > 0, where R7 is the radius of curvature of the object-side surface of the fourth lens and R8 is the radius of curvature of the image-side surface of the fourth lens. More specifically, R7 and R8 may further satisfy: R7/R8 > 0.1. The requirement that R7/R8 is more than 0 is met, the deflection angle of light rays passing through the fourth lens can be controlled, the image pickup lens group can have high aberration correction capability, the sensitivity of the fourth lens can be effectively reduced, and meanwhile, the fourth lens can have good manufacturability.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: -0.4 < f/f3 < 0, wherein f3 is the effective focal length of the third lens element and f is the total effective focal length of the image pickup lens group. The requirement that f/f3 is more than-0.4 and less than 0 is met, the deflection angle of light rays at the third lens is favorably reduced, the sensitivity of the third lens is favorably reduced, and the overlarge inclination angles of the object side surface and the image side surface of the third lens are favorably avoided, so that the third lens has good manufacturability.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0 & lt SAG12/SAG11 & lt 0.05, wherein SAG11 is the distance on the optical axis from the intersection point of the object side surface of the first lens and the optical axis to the effective radius vertex of the object side surface of the first lens, and SAG12 is the distance on the optical axis from the intersection point of the image side surface of the first lens and the optical axis to the effective radius vertex of the image side surface of the first lens. The imaging lens group meets the condition that SAG12/SAG11 is more than 0 and less than or equal to 0.05, can effectively control the contribution amount of curvature of field and distortion of the imaging lens group, improves the imaging quality, is favorable for ensuring the good imaging quality and lower system sensitivity of the imaging lens group, and can better ensure the processability of the imaging lens group.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0 < R11/R12 < 0.25, wherein R11 is the curvature radius of the object side surface of the sixth lens, and R12 is the curvature radius of the image side surface of the sixth lens. More specifically, R11 and R12 may further satisfy: R11/R12 is more than 0.1 and less than or equal to 0.25. R11/R12 is more than 0 and less than or equal to 0.25, the curvature of the sixth lens is favorably and reasonably controlled, and the optical sensitivity of the sixth lens is reduced, so that the sixth lens has good processing performance, and the rays of each view field of the camera lens group can be favorably matched with the CRA of the chip when reaching an imaging surface.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: TTL/ImgH is less than or equal to 1.60, wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the shooting lens group on the optical axis, and ImgH is half of the length of the diagonal line of the effective pixel area of the shooting lens group. The requirements that TTL/ImgH is less than or equal to 1.60 are met, the size of the camera lens group is small, the characteristics of ultra-thin and miniaturization of the camera lens group are realized, and the camera lens group is suitable for more and more ultra-thin electronic products in the market.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0 < (T56/TTL). times.10 < 0.5, wherein TTL is the distance on the optical axis from the object side surface of the first lens element to the image plane of the image pickup lens group, and T56 is the distance on the optical axis between the fifth lens element and the sixth lens element. More specifically, T56 and TTL further can satisfy: 0.2 < (T56/TTL). times.10 < 0.5. Satisfies 0 < (T56/TTL) x 10 < 0.5, is beneficial to ensuring the assembly process of each lens, realizing the miniaturization of the camera lens group and reducing the processing sensitivity of the camera lens group.
In an exemplary embodiment, the image pickup lens group according to the present application may satisfy: 0.6 < tan (Semi-FOV) < 1, wherein the Semi-FOV is half of the maximum field angle of the image pickup lens group. More specifically, the Semi-FOV further satisfies: 0.7 < tan (Semi-FOV) < 0.9. Satisfying 0.6 < tan (Semi-FOV) < 1 is advantageous for imaging the information on the side of the object on the chip as much as possible.
In an exemplary embodiment, an image capturing lens group according to the present application further includes a stop disposed between the object side and the first lens. Optionally, the above-mentioned image pickup lens group may further include a filter for correcting color deviation and/or a protective glass for protecting the photosensitive element on the image plane. The application provides a camera lens group with characteristics of miniaturization, high contrast, large aperture, ultra-thin and high imaging quality. The image pickup lens group according to the above-described embodiment of the present application may employ a plurality of lenses, for example, the above seven lenses. By reasonably distributing the focal power and the surface shape of each lens, the central thickness of each lens, the on-axis distance between each lens and the like, incident light can be effectively converged, the optical total length of the imaging lens is reduced, the machinability of the imaging lens is improved, and the camera lens group is more favorable for production and processing.
In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface, that is, at least one of the object-side surface of the first lens to the image-side surface of the seventh lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of an object-side surface and an image-side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspheric mirror surface. Optionally, each of the first, second, third, fourth, fifth, sixth, and seventh lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses constituting the imaging lens group can be varied to achieve the various results and advantages described in this specification without departing from the claimed subject matter. For example, although seven lenses are exemplified in the embodiment, the image pickup lens group is not limited to include seven lenses. The image pickup lens group may further include other numbers of lenses if necessary.
Specific examples of the image pickup lens group applicable to the above embodiments are further described below with reference to the drawings.
Example 1
An image capturing 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 image capturing lens group according to embodiment 1 of the present application.
As shown in fig. 1, the image capturing lens assembly, in order from an object side to an image side, comprises: 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave 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 concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 1 shows a basic parameter table of the image pickup lens group of embodiment 1, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm).
Figure BDA0002837136240000081
TABLE 1
In the present example, the total effective focal length f of the image-taking lens group is 4.81mm, the total length TTL of the image-taking 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 S17 of the image-taking lens group) is 6.34mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the image-taking lens group is 4.00mm, the half Semi-FOV of the maximum field angle of the image-taking lens group is 38.98 °, and the aperture value Fno of the image-taking lens group is 1.39.
In embodiment 1, the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 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:
Figure BDA0002837136240000091
wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. The high-order term coefficients A that can be used for the aspherical mirror surfaces S1 through S14 in example 1 are shown in tables 2-1 and 2-2 below4、A6、A8、A10、A12、A14、A16、A18、A20、A22、A24、A26、A28And A30。
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -5.8274E-04 1.7741E-03 -1.0201E-03 -1.5007E-03 2.7961E-03 -1.9978E-03 7.4349E-04
S2 -1.0126E-01 1.9857E-01 -2.5315E-01 2.1812E-01 -1.2734E-01 4.9220E-02 -1.2028E-02
S3 -1.3406E-01 2.0449E-01 -2.5210E-01 2.3485E-01 -1.6737E-01 9.1978E-02 -3.7975E-02
S4 -5.5733E-02 3.6481E-02 6.9861E-03 -8.4068E-02 1.4985E-01 -1.5204E-01 9.6829E-02
S5 -4.7351E-02 8.8353E-05 -4.9612E-02 1.3326E-01 -2.1636E-01 2.0839E-01 -1.2172E-01
S6 -3.2542E-02 -5.1011E-03 -9.9546E-02 3.0628E-01 -4.6759E-01 4.1637E-01 -2.2408E-01
S7 -6.6766E-03 1.3459E-02 -1.8108E-01 5.0502E-01 -7.4710E-01 6.7724E-01 -3.9031E-01
S8 -3.8606E-02 -6.4544E-03 2.6563E-02 -4.4208E-02 -9.9300E-03 1.4463E-01 -2.4432E-01
S9 -8.7159E-02 1.2821E-01 -2.6469E-01 4.5422E-01 -5.9302E-01 5.5675E-01 -3.7088E-01
S10 -2.1825E-01 2.0005E-01 -1.7162E-01 1.2330E-01 -7.4158E-02 3.6592E-02 -1.4280E-02
S11 -1.1556E-01 7.9637E-02 -5.6288E-02 2.6344E-02 -8.4581E-03 1.7793E-03 -2.3887E-04
S12 5.1770E-02 -2.9860E-02 4.1586E-03 2.3193E-03 -1.9404E-03 7.2842E-04 -1.6780E-04
S13 -2.2857E-01 1.2866E-01 -6.5619E-02 2.8165E-02 -8.6732E-03 1.8818E-03 -2.9357E-04
S14 -2.3955E-01 1.3871E-01 -6.6148E-02 2.2796E-02 -5.4842E-03 8.9915E-04 -9.5631E-05
TABLE 2-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -1.4455E-04 1.1416E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 1.6801E-03 -1.0209E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 1.0986E-02 -1.9446E-03 1.5613E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 -3.7855E-02 8.2288E-03 -7.4653E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 4.2153E-02 -7.7908E-03 5.6651E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 7.1576E-02 -1.2419E-02 8.9381E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 1.4268E-01 -3.1881E-02 3.9547E-03 -2.0781E-04 0.0000E+00 0.0000E+00 0.0000E+00
S8 2.2206E-01 -1.2625E-01 4.6269E-02 -1.0658E-02 1.4072E-03 -8.1357E-05 0.0000E+00
S9 1.7457E-01 -5.7427E-02 1.2860E-02 -1.8550E-03 1.5261E-04 -4.9355E-06 -6.4941E-08
S10 4.1943E-03 -8.6289E-04 1.1129E-04 -6.7553E-06 -1.6848E-07 4.8262E-08 -1.9520E-09
S11 2.1268E-05 -1.4290E-06 7.7259E-08 -2.3157E-09 0.0000E+00 0.0000E+00 0.0000E+00
S12 2.5428E-05 -2.5638E-06 1.6628E-07 -6.2733E-09 1.0416E-10 0.0000E+00 0.0000E+00
S13 3.3475E-05 -2.7953E-06 1.6783E-07 -6.8993E-09 1.7429E-10 -2.0402E-12 0.0000E+00
S14 5.6286E-06 -2.6599E-08 -2.3137E-08 1.7956E-09 -6.0699E-11 8.1508E-13 0.0000E+00
Tables 2 to 2
Fig. 2A shows a chromatic aberration curve on the axis of the image-taking lens group of embodiment 1, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 1. Fig. 2C shows a distortion curve of the image capturing lens group of embodiment 1, which represents distortion magnitude values corresponding to different image heights. Fig. 2D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the image capturing lens assembly of embodiment 1 can achieve good image quality.
Example 2
An image capturing 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 parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic configuration diagram of a photographing lens group according to embodiment 2 of the present application.
As shown in fig. 3, the image capturing lens assembly, in order from an object side to an image side, comprises: 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave 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 negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the image-taking lens group is 4.81mm, the total length TTL of the image-taking lens group is 6.25mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the image-taking lens group is 4.00mm, the half Semi-FOV of the maximum field angle of the image-taking lens group is 39.11 °, and the aperture value Fno of the image-taking lens group is 1.38.
Table 3 shows a basic parameter table of the image pickup lens group of embodiment 2, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 4-1, 4-2 show the high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by the formula (1) given in example 1 above.
Figure BDA0002837136240000101
Figure BDA0002837136240000111
TABLE 3
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -1.3781E-03 3.6516E-03 -4.9506E-03 3.2135E-03 -6.2150E-04 -5.0649E-04 3.6207E-04
S2 -1.0556E-01 2.1279E-01 -2.8309E-01 2.5802E-01 -1.6118E-01 6.7324E-02 -1.7928E-02
S3 -1.3926E-01 2.0629E-01 -2.1733E-01 1.2760E-01 -5.4378E-03 -5.4149E-02 4.4102E-02
S4 -5.5853E-02 1.7754E-02 1.0798E-01 -3.2434E-01 4.7560E-01 -4.1790E-01 2.2538E-01
S5 -4.5163E-02 4.9931E-03 -7.4902E-02 1.8749E-01 -2.8766E-01 2.6592E-01 -1.4917E-01
S6 -4.2880E-02 6.5101E-02 -3.1171E-01 7.0456E-01 -9.4886E-01 7.9078E-01 -4.0978E-01
S7 -3.6677E-02 1.2944E-01 -4.9734E-01 1.0700E+00 -1.4132E+00 1.1954E+00 -6.5489E-01
S8 -9.5298E-02 1.2713E-01 -1.8165E-01 1.6805E-01 -1.5876E-01 2.2697E-01 -2.9931E-01
S9 -1.6326E-01 2.9027E-01 -4.9781E-01 7.1833E-01 -8.4228E-01 7.5423E-01 -4.9893E-01
S10 -2.7729E-01 3.0608E-01 -3.0281E-01 2.4598E-01 -1.5543E-01 7.3390E-02 -2.5753E-02
S11 -1.3661E-01 1.0782E-01 -8.7965E-02 4.8642E-02 -1.7919E-02 3.9221E-03 -4.1828E-04
S12 4.1312E-02 -6.6133E-03 -3.1625E-02 3.4103E-02 -1.9612E-02 7.0873E-03 -1.6854E-03
S13 -2.8409E-01 1.7954E-01 -9.7312E-02 4.1368E-02 -1.1816E-02 2.1582E-03 -2.3467E-04
S14 -3.0263E-01 2.0836E-01 -1.1941E-01 5.0593E-02 -1.5454E-02 3.3929E-03 -5.3495E-04
TABLE 4-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -9.2372E-05 8.5140E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 2.7479E-03 -1.8424E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -1.7144E-02 3.4402E-03 -2.8478E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 -7.1225E-02 1.1467E-02 -6.1328E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 4.8798E-02 -8.1747E-03 4.8545E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 1.2807E-01 -2.1965E-02 1.5745E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 2.2951E-01 -4.9254E-02 5.8389E-03 -2.8906E-04 0.0000E+00 0.0000E+00 0.0000E+00
S8 2.6824E-01 -1.5698E-01 5.9552E-02 -1.4162E-02 1.9229E-03 -1.1387E-04 0.0000E+00
S9 2.3881E-01 -8.0890E-02 1.8753E-02 -2.8052E-03 2.3922E-04 -8.0086E-06 -1.0908E-07
S10 6.7335E-03 -1.2704E-03 1.5562E-04 -8.7482E-06 -4.0201E-07 8.8583E-08 -3.7417E-09
S11 6.9544E-07 4.5528E-06 -4.2362E-07 1.2566E-08 0.0000E+00 0.0000E+00 0.0000E+00
S12 2.6865E-04 -2.8543E-05 1.9457E-06 -7.7138E-08 1.3534E-09 0.0000E+00 0.0000E+00
S13 1.0336E-05 8.7126E-07 -1.7134E-07 1.2129E-08 -4.2871E-10 6.2787E-12 0.0000E+00
S14 6.0206E-05 -4.7604E-06 2.5619E-07 -8.8419E-09 1.7374E-10 -1.4394E-12 0.0000E+00
Table 4-2 fig. 4A shows a difference curve on the axis of the image pickup lens group of embodiment 2, which indicates the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 2. Fig. 4C shows a distortion curve of the image capturing lens group of embodiment 2, which represents distortion magnitude values corresponding to different image heights. Fig. 4D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the image capturing lens assembly according to embodiment 2 can achieve good image quality.
Example 3
A photographing 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 a photographing lens group according to embodiment 3 of the present application.
As shown in fig. 5, the image capturing lens assembly, in order from an object side to an image side, comprises: 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave 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 negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the image-taking lens group is 4.85mm, the total length TTL of the image-taking lens group is 6.31mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the image-taking lens group is 4.00mm, the half Semi-FOV of the maximum field angle of the image-taking lens group is 39.00 °, and the aperture value Fno of the image-taking lens group is 1.40.
Table 5 shows a basic parameter table of the image pickup lens group of embodiment 3, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 6-1, 6-2 show the high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by the formula (1) given in example 1 above.
Figure BDA0002837136240000121
Figure BDA0002837136240000131
TABLE 5
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -5.2174E-04 2.1238E-03 -3.3374E-03 2.1834E-03 -1.9141E-04 -6.5083E-04 4.0576E-04
S2 -9.1895E-02 1.8615E-01 -2.5228E-01 2.3557E-01 -1.5134E-01 6.5104E-02 -1.7865E-02
S3 -1.3507E-01 2.0253E-01 -2.3759E-01 1.8394E-01 -7.4366E-02 -5.7576E-03 2.3714E-02
S4 -6.5857E-02 3.7041E-02 6.1910E-02 -2.5893E-01 4.3208E-01 -4.2296E-01 2.5594E-01
S5 -5.8845E-02 1.7859E-02 -7.7250E-02 1.6865E-01 -2.5518E-01 2.4542E-01 -1.4761E-01
S6 -6.3472E-02 6.0516E-03 2.5172E-02 -6.3087E-02 3.9495E-02 1.1498E-02 -2.5152E-02
S7 -3.7194E-02 3.8808E-02 -1.1016E-01 3.3298E-01 -6.7872E-01 8.6781E-01 -7.1194E-01
S8 -6.9092E-02 5.9987E-02 3.2622E-02 -4.8364E-01 1.3861E+00 -2.3157E+00 2.5881E+00
S9 -1.2421E-01 1.8942E-01 -3.0243E-01 3.8197E-01 -3.7642E-01 2.7933E-01 -1.5385E-01
S10 -2.6459E-01 2.6625E-01 -2.3740E-01 9.1055E-02 1.1417E-01 -2.3312E-01 2.0860E-01
S11 -1.3521E-01 1.3935E-01 -1.6618E-01 1.4509E-01 -9.6833E-02 4.8815E-02 -1.8410E-02
S12 4.4820E-02 -3.2470E-03 -3.8526E-02 3.5363E-02 -1.7957E-02 5.8967E-03 -1.2892E-03
S13 -2.6241E-01 1.6972E-01 -9.7335E-02 4.3008E-02 -1.1837E-02 1.6738E-03 1.6219E-05
S14 -2.6989E-01 1.9293E-01 -1.1761E-01 5.4384E-02 -1.8501E-02 4.6266E-03 -8.5461E-04
TABLE 6-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -1.0221E-04 9.5051E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 2.8225E-03 -1.9510E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -1.2171E-02 2.8266E-03 -2.5966E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 -9.3414E-02 1.8654E-02 -1.5312E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 5.3895E-02 -1.0899E-02 9.3654E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 1.2142E-02 -2.5022E-03 1.8520E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 3.8335E-01 -1.3547E-01 3.0365E-02 -3.9235E-03 2.2285E-04 0.0000E+00 0.0000E+00
S8 -2.0248E+00 1.1256E+00 -4.4288E-01 1.2062E-01 -2.1627E-02 2.2967E-03 -1.0941E-04
S9 6.2322E-02 -1.8398E-02 3.9189E-03 -5.9316E-04 6.1451E-05 -3.9285E-06 1.1402E-07
S10 -1.1697E-01 4.4306E-02 -1.1520E-02 2.0278E-03 -2.3094E-04 1.5353E-05 -4.5245E-07
S11 5.0904E-03 -1.0018E-03 1.3506E-04 -1.1746E-05 5.8181E-07 -1.1136E-08 -1.0613E-10
S12 1.8763E-04 -1.7751E-05 1.0257E-06 -3.1359E-08 3.3699E-10 3.3178E-13 0.0000E+00
S13 -5.6051E-05 1.1829E-05 -1.3634E-06 9.7841E-08 -4.3490E-09 1.0935E-10 -1.1795E-12
S14 1.1691E-04 -1.1807E-05 8.6983E-07 -4.5531E-08 1.6085E-09 -3.4491E-11 3.4007E-13
Table 6-2 fig. 6A shows a difference curve on the axis of the image pickup lens group of embodiment 3, which indicates the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 3. Fig. 6C shows a distortion curve of the image capturing lens group of embodiment 3, which represents distortion magnitude values corresponding to different image heights. Fig. 6D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the image capturing lens assembly of embodiment 3 can achieve good image quality.
Example 4
A photographing 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 configuration diagram of a photographing lens group according to embodiment 4 of the present application.
As shown in fig. 7, the image capturing lens assembly, in order from an object side to an image side, comprises: 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave 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 negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the image-taking lens group is 4.82mm, the total length TTL of the image-taking lens group is 6.27mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the image-taking lens group is 4.00mm, the half Semi-FOV of the maximum field angle of the image-taking lens group is 38.99 °, and the aperture value Fno of the image-taking lens group is 1.39.
Table 7 shows a basic parameter table of the image pickup lens group of embodiment 4, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 8-1, 8-2 show the high-order term coefficients that can be used for each aspherical mirror surface in example 4, wherein each aspherical mirror surface type can be defined by the formula (1) given in example 1 above.
Figure BDA0002837136240000141
Figure BDA0002837136240000151
TABLE 7
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 7.7817E-05 1.7479E-03 -2.5512E-03 1.6322E-03 -2.2128E-04 -3.4392E-04 2.1054E-04
S2 -9.8521E-02 1.8685E-01 -2.3563E-01 2.0528E-01 -1.2279E-01 4.9110E-02 -1.2517E-02
S3 -1.3139E-01 1.8391E-01 -1.9420E-01 1.3001E-01 -3.8653E-02 -1.3288E-02 1.8002E-02
S4 -5.5474E-02 1.8588E-02 9.1297E-02 -2.9144E-01 4.6150E-01 -4.4964E-01 2.7877E-01
S5 -5.3736E-02 3.3538E-02 -1.2868E-01 2.4916E-01 -3.0961E-01 2.3816E-01 -1.0939E-01
S6 -7.5356E-02 1.3053E-01 -3.5469E-01 5.9581E-01 -6.5509E-01 4.7065E-01 -2.1574E-01
S7 -6.4577E-02 1.4069E-01 -3.1891E-01 4.5416E-01 -4.0163E-01 2.0831E-01 -4.4788E-02
S8 -7.0056E-02 7.3323E-02 -8.4053E-02 5.3439E-02 -7.1325E-02 1.8826E-01 -2.9661E-01
S9 -1.3741E-01 2.4248E-01 -4.3627E-01 6.7754E-01 -8.4136E-01 7.7480E-01 -5.1530E-01
S10 -2.6517E-01 2.9705E-01 -3.0966E-01 2.8873E-01 -2.2453E-01 1.3388E-01 -5.8417E-02
S11 -1.4895E-01 8.4305E-02 -5.9644E-02 3.8628E-02 -2.0822E-02 8.0748E-03 -2.1145E-03
S12 5.6353E-02 -8.4844E-02 5.8899E-02 -2.9074E-02 1.0610E-02 -3.1565E-03 8.1185E-04
S13 -5.9912E-02 -5.5424E-02 6.8078E-02 -3.9562E-02 1.5292E-02 -4.1974E-03 8.4033E-04
S14 -6.1308E-02 -2.4763E-02 3.4784E-02 -1.9456E-02 6.7909E-03 -1.6219E-03 2.7521E-04
TABLE 8-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 -4.9442E-05 3.9592E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 1.8350E-03 -1.1772E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -7.5566E-03 1.5252E-03 -1.2403E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 -1.0714E-01 2.3268E-02 -2.1775E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 2.7124E-02 -2.5415E-03 -8.9401E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 5.9887E-02 -8.9724E-03 5.3644E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 -1.2069E-02 1.0200E-02 -2.4475E-03 2.1086E-04 0.0000E+00 0.0000E+00 0.0000E+00
S8 2.7774E-01 -1.6470E-01 6.2873E-02 -1.5029E-02 2.0509E-03 -1.2205E-04 0.0000E+00
S9 2.4464E-01 -8.1692E-02 1.8657E-02 -2.7560E-03 2.3316E-04 -7.7907E-06 -1.0591E-07
S10 1.8063E-02 -3.8005E-03 5.0880E-04 -3.7379E-05 7.7444E-07 6.1837E-08 -2.5458E-09
S11 3.5664E-04 -3.6130E-05 1.9334E-06 -3.9754E-08 0.0000E+00 0.0000E+00 0.0000E+00
S12 -1.7272E-04 2.7380E-05 -2.8911E-06 1.7727E-07 -4.7243E-09 0.0000E+00 0.0000E+00
S13 -1.2361E-04 1.3210E-05 -9.9450E-07 4.9791E-08 -1.4826E-09 1.9812E-11 0.0000E+00
S14 -3.3607E-05 2.9342E-06 -1.7846E-07 7.1660E-09 -1.7035E-10 1.8119E-12 0.0000E+00
Table 8-2 fig. 8A shows a difference curve on the axis of the image pickup lens group of embodiment 4, which indicates the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 4. Fig. 8C shows a distortion curve of the image capturing lens group of embodiment 4, which represents distortion magnitude values corresponding to different image heights. Fig. 8D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the imaging lens assembly according to embodiment 4 can achieve good imaging quality.
Example 5
A photographing 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 configuration diagram of a photographing lens group according to embodiment 5 of the present application.
As shown in fig. 9, the image capturing lens assembly, in order from an object side to an image side, comprises: 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave 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 negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the image-taking lens group is 4.95mm, the total length TTL of the image-taking lens group is 6.34mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the image-taking lens group is 4.00mm, the half Semi-FOV of the maximum field angle of the image-taking lens group is 38.05 °, and the aperture value Fno of the image-taking lens group is 1.39.
Table 9 shows a basic parameter table of the image pickup lens group of embodiment 5, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 10-1, 10-2 show the high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by the formula (1) given in example 1 above.
Figure BDA0002837136240000161
Figure BDA0002837136240000171
TABLE 9
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -1.5077E-04 2.8683E-03 -5.9048E-03 7.0288E-03 -5.1788E-03 2.3837E-03 -6.7660E-04
S2 -9.4178E-02 1.7041E-01 -2.0479E-01 1.7000E-01 -9.6684E-02 3.6663E-02 -8.8409E-03
S3 -1.3231E-01 1.7615E-01 -1.7857E-01 1.1982E-01 -4.2181E-02 -1.9749E-03 9.1324E-03
S4 -6.0159E-02 1.8415E-02 1.0646E-01 -3.2515E-01 5.0172E-01 -4.7599E-01 2.8673E-01
S5 -4.6311E-02 1.1231E-02 -8.1488E-02 1.6946E-01 -2.1086E-01 1.5407E-01 -6.2816E-02
S6 -6.0644E-02 1.3606E-01 -4.5094E-01 8.0011E-01 -8.6030E-01 5.8314E-01 -2.4982E-01
S7 -6.6535E-02 2.1099E-01 -5.8968E-01 9.4986E-01 -9.1564E-01 5.4061E-01 -1.8812E-01
S8 -9.8786E-02 1.5773E-01 -2.3244E-01 2.0572E-01 -1.4391E-01 1.6426E-01 -2.2451E-01
S9 -1.6164E-01 3.0212E-01 -5.4172E-01 7.9935E-01 -9.3776E-01 8.2987E-01 -5.3836E-01
S10 -2.4879E-01 2.9674E-01 -3.3910E-01 3.2839E-01 -2.5170E-01 1.4476E-01 -6.0456E-02
S11 -1.3122E-01 8.7432E-02 -6.2102E-02 3.1053E-02 -1.0585E-02 1.9864E-03 1.3904E-05
S12 3.7084E-02 -4.4786E-02 3.5273E-02 -2.5500E-02 1.3834E-02 -5.4106E-03 1.5114E-03
S13 -1.1778E-01 1.8948E-02 2.0423E-02 -2.0761E-02 1.0266E-02 -3.1831E-03 6.6424E-04
S14 -1.1437E-01 2.8711E-02 5.1533E-03 -9.7049E-03 5.0047E-03 -1.5382E-03 3.1686E-04
TABLE 10-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 1.0842E-04 -7.8549E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 1.2246E-03 -7.4257E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -4.0146E-03 7.9095E-04 -6.1458E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 -1.0690E-01 2.2520E-02 -2.0487E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 1.1711E-02 8.3662E-05 -2.4994E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 6.5307E-02 -9.4204E-03 5.6548E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 3.1604E-02 5.6271E-04 -1.0296E-03 1.0969E-04 0.0000E+00 0.0000E+00 0.0000E+00
S8 2.1117E-01 -1.2638E-01 4.8166E-02 -1.1385E-02 1.5258E-03 -8.8762E-05 0.0000E+00
S9 2.5180E-01 -8.3403E-02 1.8983E-02 -2.8033E-03 2.3746E-04 -7.9455E-06 -1.0816E-07
S10 1.7833E-02 -3.5776E-03 4.5748E-04 -3.2237E-05 6.5632E-07 4.7746E-08 -1.9297E-09
S11 -1.0711E-04 2.5604E-05 -2.6483E-06 1.0528E-07 0.0000E+00 0.0000E+00 0.0000E+00
S12 -2.9750E-04 4.0126E-05 -3.5129E-06 1.7894E-07 -4.0080E-09 0.0000E+00 0.0000E+00
S13 -9.5982E-05 9.6442E-06 -6.6193E-07 2.9605E-08 -7.7766E-10 9.1013E-12 0.0000E+00
S14 -4.5216E-05 4.4788E-06 -3.0185E-07 1.3189E-08 -3.3666E-10 3.8087E-12 0.0000E+00
TABLE 10-2
Fig. 10A shows a on-axis chromatic aberration curve of the image-taking lens group of embodiment 5, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 5. Fig. 10C shows a distortion curve of the image capturing lens group of embodiment 5, which represents distortion magnitude values corresponding to different image heights. Fig. 10D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the imaging lens assembly according to embodiment 5 can achieve good imaging quality.
Example 6
A photographing 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 configuration diagram of a photographing lens group according to embodiment 6 of the present application.
As shown in fig. 11, the image capturing lens assembly, in order from an object side to an image side, comprises: 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, a filter E8, and an image forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave 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 negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
In this example, the total effective focal length f of the image-taking lens group is 5.05mm, the total length TTL of the image-taking lens group is 6.39mm, the half ImgH of the diagonal length of the effective pixel area on the imaging surface S17 of the image-taking lens group is 4.00mm, the half Semi-FOV of the maximum field angle of the image-taking lens group is 37.55 °, and the aperture value Fno of the image-taking lens group is 1.39.
Table 11 shows a basic parameter table of the imaging lens group of embodiment 6, in which the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Tables 12-1, 12-2 show the high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by the formula (1) given in example 1 above.
Figure BDA0002837136240000181
Figure BDA0002837136240000191
TABLE 11
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -2.7842E-04 2.5825E-03 -5.3124E-03 6.3774E-03 -4.7442E-03 2.2063E-03 -6.3214E-04
S2 -9.2338E-02 1.6383E-01 -1.9079E-01 1.5246E-01 -8.3190E-02 3.0216E-02 -6.9721E-03
S3 -1.3182E-01 1.7333E-01 -1.6922E-01 1.0805E-01 -3.6183E-02 -1.1629E-03 6.5363E-03
S4 -6.0563E-02 2.0834E-02 1.0040E-01 -3.0195E-01 4.5118E-01 -4.1382E-01 2.4129E-01
S5 -4.5701E-02 1.0700E-02 -8.4174E-02 1.9678E-01 -2.7596E-01 2.3652E-01 -1.2545E-01
S6 -4.2933E-02 5.3354E-02 -2.2531E-01 4.4094E-01 -5.0849E-01 3.6954E-01 -1.7215E-01
S7 -4.0493E-02 1.1110E-01 -3.5114E-01 5.9706E-01 -6.0518E-01 3.9581E-01 -1.7243E-01
S8 -9.3762E-02 1.6453E-01 -3.1668E-01 3.9665E-01 -3.7925E-01 3.4645E-01 -3.1156E-01
S9 -1.5870E-01 3.1751E-01 -6.0041E-01 8.7947E-01 -9.8728E-01 8.3037E-01 -5.1468E-01
S10 -2.4153E-01 3.0501E-01 -3.6624E-01 3.5190E-01 -2.5718E-01 1.3885E-01 -5.4227E-02
S11 -1.2254E-01 9.2978E-02 -6.8980E-02 3.2645E-02 -8.8068E-03 4.5331E-04 5.6553E-04
S12 3.1708E-02 -3.2870E-02 3.2043E-02 -3.1273E-02 2.0515E-02 -8.9517E-03 2.6505E-03
S13 -1.4899E-01 5.7958E-02 -1.1035E-02 -3.4417E-03 3.3632E-03 -1.1809E-03 2.4453E-04
S14 -1.5150E-01 6.7072E-02 -2.2051E-02 3.6251E-03 4.0880E-04 -4.1331E-04 1.2159E-04
TABLE 12-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 1.0216E-04 -7.3865E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 9.2359E-04 -5.3549E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 -2.6820E-03 4.8700E-04 -3.4524E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 -8.7220E-02 1.7845E-02 -1.5788E-03 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 4.0048E-02 -6.9326E-03 4.8164E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 5.0044E-02 -8.2574E-03 5.8839E-04 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 4.9810E-02 -9.1714E-03 9.7775E-04 -4.6273E-05 0.0000E+00 0.0000E+00 0.0000E+00
S8 2.3148E-01 -1.2402E-01 4.4815E-02 -1.0307E-02 1.3606E-03 -7.8429E-05 0.0000E+00
S9 2.3183E-01 -7.4507E-02 1.6557E-02 -2.3987E-03 2.0000E-04 -6.6018E-06 -8.8659E-08
S10 1.4967E-02 -2.8155E-03 3.3809E-04 -2.2242E-05 3.7314E-07 3.6648E-08 -1.4529E-09
S11 -2.1400E-04 3.6581E-05 -3.1479E-06 1.0969E-07 0.0000E+00 0.0000E+00 0.0000E+00
S12 -5.3477E-04 7.2302E-05 -6.2533E-06 3.1195E-07 -6.8126E-09 0.0000E+00 0.0000E+00
S13 -3.2854E-05 2.9058E-06 -1.6218E-07 4.8683E-09 -2.1035E-11 -3.0473E-12 6.4504E-14
S14 -2.1485E-05 2.5279E-06 -2.0241E-07 1.0894E-08 -3.7668E-10 7.5427E-12 -6.6266E-14
TABLE 12-2
Fig. 12A shows a on-axis chromatic aberration curve of the image-taking lens group of embodiment 6, which represents the deviation of the convergent focus of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the image pickup lens group of embodiment 6. Fig. 12C shows a distortion curve of the image capturing lens group of embodiment 6, which represents distortion magnitude values corresponding to different image heights. Fig. 12D shows a chromatic aberration of magnification curve of the imaging lens group of embodiment 6, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the imaging lens assembly according to embodiment 6 can achieve good imaging quality.
In summary, examples 1 to 6 each satisfy the relationship shown in table 13.
Conditions/examples 1 2 3 4 5 6
R7/R8 7.86 1.11 0.18 0.17 1.33 0.77
f/f3 -0.15 -0.18 -0.27 -0.24 -0.17 -0.11
CT2/CT1 0.26 0.25 0.26 0.33 0.31 0.28
TTL/ImgH 1.58 1.56 1.58 1.57 1.59 1.60
R10/R9 0.45 0.85 0.81 0.66 0.91 0.72
f/R5 0.33 0.35 0.54 0.48 0.46 0.37
R11/R12 0.25 0.22 0.24 0.16 0.14 0.13
SAG12/SAG11 0.03 0.04 0.03 0.05 0.02 0.02
SAG21/SAG22 0.33 0.70 0.68 0.69 0.64 0.60
DT21/DT11 0.88 0.89 0.91 0.91 0.91 0.91
ET2/CT2 2.58 1.38 1.40 1.37 1.47 1.56
(T56/TTL)×10 0.30 0.35 0.31 0.36 0.40 0.40
tan(Semi-FOV) 0.81 0.81 0.81 0.81 0.78 0.77
Watch 13
The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the above-described image-taking lens group.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above 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 (28)

1. The imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having an optical power;
a second lens having an optical power;
a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface;
a fourth lens having an optical power;
a fifth lens element with a focal power, wherein the object-side surface of the fifth lens element is convex and the image-side surface of the fifth lens element is concave;
a sixth lens having a refractive power, an image-side surface of which is concave; and
a seventh lens having optical power;
the total effective focal length f of the camera lens group and the entrance pupil diameter EPD of the camera lens group satisfy: f/EPD is less than or equal to 1.40.
2. The imaging lens group of claim 1, wherein the total effective focal length f of the imaging lens group and the radius of curvature R5 of the object side surface of the third lens satisfy: f/R5 is more than 0.1 and less than 0.8.
3. The imaging lens group of claim 1, wherein the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT21 of the object side surface of the second lens satisfy: 0.6 < DT21/DT11 < 1.
4. The imaging lens group of claim 1, wherein a central thickness CT1 of the first lens on the optical axis and a central thickness CT2 of the second lens on the optical axis satisfy: 0.1 < CT2/CT1 < 0.4.
5. The image-capturing lens group according to claim 1, wherein a distance SAG21 on the optical axis from an intersection point of an object-side surface of the second lens and the optical axis to an effective radius vertex of the object-side surface of the second lens to a distance SAG22 on the optical axis from an intersection point of an image-side surface of the second lens and the optical axis to an effective radius vertex of the image-side surface of the second lens satisfies: 0.1-SAG 21/SAG 22-0.7.
6. The imaging lens group of claim 1, wherein a center thickness CT2 of the second lens on the optical axis and an edge thickness ET2 of the second lens satisfy: 1 < ET2/CT2 < 2.6.
7. The imaging lens group of claim 1, wherein the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R10 of the image-side surface of the fifth lens satisfy: 0.2 < R10/R9 < 1.
8. The imaging lens group of claim 1, wherein the radius of curvature R7 of the object-side surface of the fourth lens and the radius of curvature R8 of the image-side surface of the fourth lens satisfy: R7/R8 > 0.
9. The imaging lens group of claim 1, wherein the effective focal length f3 of the third lens and the total effective focal length f of the imaging lens group satisfy: -0.4 < f/f3 < 0.
10. The image capturing lens group according to claim 1, wherein a distance SAG11 on the optical axis from an intersection point of the object side surface of the first lens and the optical axis to an effective radius vertex of the object side surface of the first lens to a distance SAG12 on the optical axis from an intersection point of the image side surface of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens satisfies: 0 is more than SAG12/SAG11 and is less than or equal to 0.05.
11. The imaging lens group of claim 1, wherein the radius of curvature R11 of the object-side surface of the sixth lens element and the radius of curvature R12 of the image-side surface of the sixth lens element satisfy: R11/R12 is more than 0 and less than or equal to 0.25.
12. The imaging lens group of any of claims 1-11, wherein a distance TTL on the optical axis from the object side surface of the first lens element to the imaging surface of the imaging lens group and a half ImgH of a diagonal length of an effective pixel area of the imaging lens group satisfy: TTL/ImgH is less than or equal to 1.60.
13. The imaging lens group of any of claims 1-11, wherein a distance TTL on the optical axis from an object side surface of the first lens element to an imaging surface of the imaging lens group and a distance T56 separating the fifth lens element and the sixth lens element satisfy: 0 < (T56/TTL). times.10 < 0.5.
14. The image capturing lens group according to any one of claims 1 to 11, wherein a half Semi-FOV of a maximum field angle of the image capturing lens group satisfies: 0.6 < tan (Semi-FOV) < 1.
15. The imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:
a first lens having an optical power;
a second lens having an optical power;
a third lens with negative focal power, wherein the object side surface of the third lens is a convex surface;
a fourth lens having an optical power;
a fifth lens element with a focal power, wherein the object-side surface of the fifth lens element is convex and the image-side surface of the fifth lens element is concave;
a sixth lens having a refractive power, an image-side surface of which is concave; and
a seventh lens having optical power;
a radius of curvature R7 of an object-side surface of the fourth lens and a radius of curvature R8 of an image-side surface of the fourth lens satisfy: R7/R8 > 0.
16. The imaging lens group of claim 15, wherein the total effective focal length f of the imaging lens group and the radius of curvature R5 of the object side surface of the third lens satisfy: f/R5 is more than 0.1 and less than 0.8.
17. The imaging lens group of claim 15, wherein the maximum effective radius DT11 of the object side surface of the first lens and the maximum effective radius DT21 of the object side surface of the second lens satisfy: 0.6 < DT21/DT11 < 1.
18. The imaging lens group of claim 15, wherein a center thickness CT1 of the first lens on the optical axis and a center thickness CT2 of the second lens on the optical axis satisfy: 0.1 < CT2/CT1 < 0.4.
19. The image capturing lens group according to claim 15, wherein a distance SAG21 on the optical axis from an intersection point of an object side surface of the second lens and the optical axis to an effective radius vertex of the object side surface of the second lens to a distance SAG22 on the optical axis from an intersection point of an image side surface of the second lens and the optical axis to an effective radius vertex of the image side surface of the second lens satisfies: 0.1-SAG 21/SAG 22-0.7.
20. The imaging lens group of claim 15, wherein a center thickness CT2 of the second lens on the optical axis and an edge thickness ET2 of the second lens satisfy: 1 < ET2/CT2 < 2.6.
21. The imaging lens group of claim 15, wherein the radius of curvature R9 of the object-side surface of the fifth lens element and the radius of curvature R10 of the image-side surface of the fifth lens element satisfy: 0.2 < R10/R9 < 1.
22. The imaging lens group of claim 15, wherein the effective focal length f3 of the third lens and the total effective focal length f of the imaging lens group satisfy: -0.4 < f/f3 < 0.
23. The image capturing lens group of claim 15, wherein a distance SAG11 on the optical axis from an intersection point of the object side surface of the first lens and the optical axis to an effective radius vertex of the object side surface of the first lens to a distance SAG12 on the optical axis from an intersection point of the image side surface of the first lens and the optical axis to an effective radius vertex of the image side surface of the first lens satisfies: 0 is more than SAG12/SAG11 and is less than or equal to 0.05.
24. The imaging lens group of claim 15, wherein the radius of curvature R11 of the object-side surface of the sixth lens element and the radius of curvature R12 of the image-side surface of the sixth lens element satisfy: R11/R12 is more than 0 and less than or equal to 0.25.
25. The imaging lens group of any of claims 15-24, wherein a distance TTL on the optical axis from the object side surface of the first lens element to the imaging surface of the imaging lens group and a half ImgH of a diagonal length of an effective pixel area of the imaging lens group satisfy: TTL/ImgH is less than or equal to 1.60.
26. The imaging lens group of any one of claims 16-24, wherein the total effective focal length f of the imaging lens group and the entrance pupil diameter EPD of the imaging lens group satisfy: f/EPD is less than or equal to 1.40.
27. The imaging lens group of any of claims 15-24 wherein a distance TTL on the optical axis from an object side surface of the first lens element to an imaging surface of the imaging lens group and a distance T56 separating the fifth lens element and the sixth lens element satisfy: 0 < (T56/TTL). times.10 < 0.5.
28. The image capturing lens group according to any one of claims 15 to 24, wherein a half Semi-FOV of the maximum field angle of the image capturing lens group satisfies: 0.6 < tan (Semi-FOV) < 1.
CN202023009923.3U 2020-12-15 2020-12-15 Image pickup lens assembly Active CN213659081U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202023009923.3U CN213659081U (en) 2020-12-15 2020-12-15 Image pickup lens assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202023009923.3U CN213659081U (en) 2020-12-15 2020-12-15 Image pickup lens assembly

Publications (1)

Publication Number Publication Date
CN213659081U true CN213659081U (en) 2021-07-09

Family

ID=76690382

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202023009923.3U Active CN213659081U (en) 2020-12-15 2020-12-15 Image pickup lens assembly

Country Status (1)

Country Link
CN (1) CN213659081U (en)

Similar Documents

Publication Publication Date Title
CN110007444B (en) Optical imaging lens
CN113204096B (en) Camera lens
CN214895989U (en) Optical imaging lens
CN213986996U (en) Optical imaging lens
CN112748554A (en) Optical imaging system
CN112748541A (en) Camera lens
CN214427673U (en) Camera lens
CN214011610U (en) Camera lens
CN112764197B (en) Camera lens
CN211669431U (en) Image pickup lens group
CN211669429U (en) Optical imaging lens
CN210572972U (en) Optical imaging system
CN112462498A (en) Image pickup lens assembly
CN213659081U (en) Image pickup lens assembly
CN112180558A (en) Optical imaging lens
CN112198639A (en) Optical imaging lens
CN112415719A (en) Optical imaging system
CN111190268A (en) Camera lens
CN213715587U (en) Image pickup lens assembly
CN214122554U (en) Optical imaging system
CN213042053U (en) Optical imaging lens
CN211741693U (en) Camera lens
CN220357312U (en) Photographic lens
CN213276104U (en) Optical imaging lens
CN213338178U (en) Optical imaging lens

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant