CN212658879U

CN212658879U - Optical imaging lens

Info

Publication number: CN212658879U
Application number: CN202021171620.9U
Authority: CN
Inventors: 宋立通; 戴付建; 赵烈烽
Original assignee: Zhejiang Sunny Optics Co Ltd
Current assignee: Zhejiang Sunny Optics Co Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-03-05
Anticipated expiration: 2030-06-22
Also published as: CN214954310U

Abstract

The application discloses an optical imaging lens, which sequentially comprises from an object side to an image side along an optical axis: a first lens having a focal power, an object-side surface of which is convex; a second lens having an optical power; a third lens having optical power; a fourth lens having a positive optical power; a fifth lens having optical power; a sixth lens having a negative optical power; and a seventh lens having a negative optical power; the maximum field angle FOV of the optical imaging lens satisfies the following conditions: 105 < FOV < 125.

Description

Optical imaging lens

Technical Field

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

Background

In recent years, more and more electronic products in the market have the function of optical imaging. Meanwhile, the requirements of users for imaging lenses applied to electronic products are also increasing. With the size of electronic products becoming smaller, optical imaging systems applied to electronic products are also gradually developing to features such as miniaturization, light weight, and high pixel. Meanwhile, with the increase of functions of electronic products, users have higher and higher requirements on large fields of view of optical imaging systems applied to the electronic products.

SUMMERY OF THE UTILITY MODEL

An aspect of the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having a focal power, an object-side surface of which is convex; a second lens having an optical power; a third lens having optical power; a fourth lens having a positive optical power; a fifth lens having optical power; a sixth lens having a negative optical power; and a seventh lens having a negative optical power; the maximum field angle FOV of the optical imaging lens can satisfy: 105 < FOV < 125.

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 maximum effective radius DT12 of the image-side surface of the first lens and the maximum effective radius DT61 of the object-side surface of the sixth lens may satisfy: 0.3 < DT12/DT61 < 0.8.

In one embodiment, a distance TTL from an object side surface of the first lens element to an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy: imgH/TTL is more than 0.3 and less than 0.8.

In one embodiment, the total effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens and the effective focal length f7 of the seventh lens may satisfy: -1.0 < f/f1+ f/f7 < 0.

In one embodiment, the effective focal length f2 of the second lens, the radius of curvature R3 of the object-side surface of the second lens, and the radius of curvature R4 of the image-side surface of the second lens may satisfy: f2/(R3-R4) is more than 0 and less than 1.0.

In one embodiment, the total effective focal length f of the optical imaging lens and the combined focal length f45 of the fourth lens and the fifth lens can satisfy: f/f45 is more than 0.5 and less than 1.5.

In one embodiment, the combined focal length f23 of the second and third lenses and the combined focal length f67 of the sixth and seventh lenses may satisfy: -2.0 < f67/f23 < -0.5.

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: 0 < (R1-R2)/(R1+ R2) < 1.0.

In one embodiment, the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R6 of the image-side surface of the third lens may satisfy: 0.5 < R6/R5 < 1.5.

In one embodiment, an effective focal length f4 of the fourth lens, an effective focal length f6 of the sixth lens, a radius of curvature R7 of an object-side surface of the fourth lens, and a radius of curvature R12 of an image-side surface of the sixth lens may satisfy: 0.5 < | R7/f4+ R12/f6| < 1.5.

In one embodiment, the optical imaging lens further includes a stop, and a distance TD on an optical axis from an object-side surface of the first lens to an image-side surface of the seventh lens and a distance SL on the optical axis from the stop to an imaging surface of the optical imaging lens satisfy: TD/SL is more than 0.5 and less than 1.0.

In one embodiment, the central thickness CT6 of the sixth lens on the optical axis and the edge thickness ET6 of the sixth lens may satisfy: 0.3 < CT6/ET6 < 0.8.

In one embodiment, a radius of curvature R10 of the image-side surface of the fifth lens, a radius of curvature R13 of the object-side surface of the seventh lens, and a radius of curvature R14 of the image-side surface of the seventh lens may satisfy: -1.0 < (R13+ R14)/R10 < 0.

In one embodiment, the edge thickness ET2 of the second lens and the edge thickness ET3 of the third lens may satisfy: 0.5 < ET3/ET2 < 1.0.

In one embodiment, the edge thickness ET4 of the fourth lens and the edge thickness ET5 of the fifth lens may satisfy: 0.5 < ET4/ET5 < 1.5.

In one embodiment, a distance SAG42 on the optical axis from the intersection point of the image-side surface of the fourth lens and the optical axis to the effective radius vertex of the image-side surface of the fourth lens and a distance SAG51 on the optical axis from the intersection point of the object-side surface of the fifth lens and the optical axis to the effective radius vertex of the object-side surface of the fifth lens may satisfy: 0.3 < SAG42/(SAG42+ SAG51) < 0.8.

In one embodiment, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT4 of the fourth lens on the optical axis, and the central thickness CT5 of the fifth lens on the optical axis may satisfy: 0.5 < (CT1+ CT2)/(CT4+ CT5) < 1.0.

In one embodiment, a sum Σ AT of a separation distance T12 of the first lens and the second lens on the optical axis and a separation distance on the optical axis of any adjacent two lenses of the first lens to the seventh lens may satisfy: 0.3 < T12/Σ AT < 0.8.

In one embodiment, the first lens has a negative optical power and its image-side surface is concave.

In one embodiment, the second lens has positive optical power, and the object side surface is convex and the image side surface is convex.

In one embodiment, the image-side surface of the fifth lens element is convex.

In one embodiment, the image-side surface of the sixth lens element is concave.

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

Another aspect of the present disclosure provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: a first lens having a focal power, an object-side surface of which is convex; a second lens having an optical power; a third lens having optical power; a fourth lens having a positive optical power; a fifth lens having optical power; a sixth lens having a negative optical power; and a seventh lens having a negative optical power; 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 can satisfy: 0 < (R1-R2)/(R1+ R2) < 1.0.

The optical imaging lens is applicable to portable electronic products, and has wide angle, miniaturization and good imaging quality.

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 structural view of an optical imaging lens according to embodiment 1 of the present application;

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

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

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

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

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

fig. 7 is a schematic structural view showing an optical imaging lens 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 optical imaging lens of embodiment 4;

fig. 9 is a schematic structural view showing an optical imaging lens 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 optical imaging lens of embodiment 5;

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

fig. 12A to 12D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens 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.

An optical imaging lens 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 or negative optical power, and the object-side surface thereof may be convex; the second lens may have a positive or negative optical power; the third lens may have a positive optical power or a negative optical power; the fourth lens may have a positive optical power; the fifth lens may have a positive power or a negative power; the sixth lens may have a negative optical power; and the seventh lens may have a negative optical power. The focal power and the surface type design of the first lens to the seventh lens are beneficial to the optical imaging lens to correct various aberrations, and can better meet the high-definition imaging of the wide-angle lens.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 105 < FOV < 125, where FOV is the maximum field angle of the optical imaging lens. More specifically, the FOV may further satisfy: 111 < FOV < 121. The optical imaging lens meets the requirement that FOV is more than 105 degrees and less than 125 degrees, is favorable for improving the relative illumination of the optical imaging lens, and is further favorable for ensuring that the edge of a picture of a shot image also has higher brightness.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < DT12/DT61 < 0.8, where DT12 is the maximum effective radius of the image-side face of the first lens and DT61 is the maximum effective radius of the object-side face of the sixth lens. More specifically, DT12 and DT61 further satisfy: 0.4 < DT12/DT61 < 0.6. The requirement that DT12/DT61 is more than 0.3 and less than 0.8 is met, so that the optical imaging lens is small in overall size and short in overall length, and has good imaging performance.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: and 0.3 < ImgH/TTL < 0.8, wherein TTL is the distance between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, and ImgH is half of the length of the diagonal line of the effective pixel area on the imaging surface of the optical imaging lens. More specifically, ImgH and TTL further can satisfy: imgH/TTL is more than 0.4 and less than 0.6. The requirement that ImgH/TTL is more than 0.3 and less than 0.8 is met, and the optical imaging lens is favorably smaller in overall dimension and shorter in total length.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -1.0 < f/f1+ f/f7 < 0, wherein f is the total effective focal length of the optical imaging lens, f1 is the effective focal length of the first lens, and f7 is the effective focal length of the seventh lens. More specifically, f1, and f7 may further satisfy: -1.0 < f/f1+ f/f7 < -0.6. Satisfying-1.0 < f/f1+ f/f7 < 0, is beneficial to correcting chromatic aberration and monochromatic aberration of the system so as to realize the balance of various aberrations.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0 < f2/(R3-R4) < 1.0, where f2 is the effective focal length of the second lens, R3 is the radius of curvature of the object-side surface of the second lens, and R4 is the radius of curvature of the image-side surface of the second lens. More specifically, f2, R3, and R4 may further satisfy: f2/(R3-R4) < 0.3 < 0.5. The spherical aberration of the system can be effectively corrected and the imaging definition can be improved when f2/(R3-R4) is more than 0 and less than 1.0.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < f/f45 < 1.5, wherein f is the total effective focal length of the optical imaging lens, and f45 is the combined focal length of the fourth lens and the fifth lens. More specifically, f and f45 further satisfy: f/f45 is more than 0.9 and less than 1.4. The axial chromatic aberration of the system can be corrected by satisfying f/f45 of 0.5-1.5.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -2.0 < f67/f23 < -0.5, wherein f23 is the combined focal length of the second and third lenses, and f67 is the combined focal length of the sixth and seventh lenses. More specifically, f67 and f23 may further satisfy: -2.0 < f67/f23 < -0.6. Satisfy-2.0 < f67/f23 < -0.5, be favorable to better correcting the vertical axis chromatic aberration of the system, promote the imaging quality of large visual field scope, reduce the purple fringing risk.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0 < (R1-R2)/(R1+ R2) < 1.0, wherein R1 is a radius of curvature of an object-side surface of the first lens, and R2 is a radius of curvature of an image-side surface of the first lens. More specifically, R1 and R2 may further satisfy: 0.8 < (R1-R2)/(R1+ R2) < 1.0. Satisfy 0 < (R1-R2)/(R1+ R2) < 1.0, be favorable to correcting the spherical aberration of the system better.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < R6/R5 < 1.5, wherein R5 is a radius of curvature of an object-side surface of the third lens, and R6 is a radius of curvature of an image-side surface of the third lens. More specifically, R6 and R5 may further satisfy: 0.6 < R6/R5 < 1.2. The requirement that R6/R5 is more than 0.5 and less than 1.5 is met, the coma aberration of the system can be better corrected, and the imaging quality of the off-axis field of view can be improved.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < | R7/f4+ R12/f6| < 1.5, wherein f4 is an effective focal length of the fourth lens, f6 is an effective focal length of the sixth lens, R7 is a radius of curvature of an object-side surface of the fourth lens, and R12 is a radius of curvature of an image-side surface of the sixth lens. More specifically, R7, f4, R12 and f6 may further satisfy: 0.8 < | R7/f4+ R12/f6| < 1.4. Satisfies 0.5 < | R7/f4+ R12/f6| < 1.5, can better correct astigmatic aberration and homogenize image quality in different directions.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: and 0.5 < TD/SL < 1.0, wherein TD is the distance between the object side surface of the first lens and the image side surface of the seventh lens on the optical axis, and SL is the distance between the diaphragm and the imaging surface of the optical imaging lens on the optical axis. More specifically, TD and SL may further satisfy: TD/SL is more than 0.8 and less than 1.0. TD/SL of more than 0.5 and less than 1.0 are satisfied, which is beneficial to reasonably distributing the focal power of each lens, thereby being beneficial to uniformly correcting the on-axis spherical aberration and the off-axis curvature of the system.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < CT6/ET6 < 0.8, wherein CT6 is the central thickness of the sixth lens on the optical axis and ET6 is the edge thickness of the sixth lens. More specifically, CT6 and ET6 further satisfy: 0.4 < CT6/ET6 < 0.7. The requirement that CT6/ET6 is more than 0.3 and less than 0.8 is met, the off-axis curvature of field aberration of the system is favorably corrected, and the image quality of the central field and the peripheral field is more balanced.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -1.0 < (R13+ R14)/R10 < 0, wherein R10 is the radius of curvature of the image-side surface of the fifth lens, R13 is the radius of curvature of the object-side surface of the seventh lens, and R14 is the radius of curvature of the image-side surface of the seventh lens. More specifically, R13, R14, and R10 may further satisfy: -1.0 < (R13+ R14)/R10 < -0.2. Satisfying-1.0 < (R13+ R14)/R10 < 0 facilitates the reasonable configuration of the optical powers of the object side surface and the image side surface of the fifth lens and the seventh lens and the correction of the off-axis field curvature.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < ET3/ET2 < 1.0, wherein ET2 is the edge thickness of the second lens and ET3 is the edge thickness of the third lens. More specifically, ET3 and ET2 further satisfy: 0.7 < ET3/ET2 < 1.0. The condition that ET3/ET2 is more than 0.5 and less than 1.0 is met, and the correction of the vertical axis chromatic aberration of the system is facilitated.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < ET4/ET5 < 1.5, wherein ET4 is the edge thickness of the fourth lens and ET5 is the edge thickness of the fifth lens. More specifically, ET4 and ET5 further satisfy: 0.7 < ET4/ET5 < 1.3. The condition of ET4/ET5 being more than 0.5 and less than 1.5 is satisfied, and the correction of the vertical axis chromatic aberration of the system is facilitated.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < SAG42/(SAG42+ SAG51) < 0.8, wherein SAG42 is a distance on the optical axis from the intersection point of the image-side surface of the fourth lens and the optical axis to the effective radius vertex of the image-side surface of the fourth lens, and SAG51 is a distance on the optical axis from the intersection point of the object-side surface of the fifth lens and the optical axis to the effective radius vertex of the object-side surface of the fifth lens. More specifically, SAG42 and SAG51 further may satisfy: 0.4 < SAG42/(SAG42+ SAG51) < 0.7. The requirement that 0.3 < SAG42/(SAG42+ SAG51) < 0.8 is satisfied, which is beneficial to correcting astigmatic aberration of the system so as to ensure the balance of image quality in different directions.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < (CT1+ CT2)/(CT4+ CT5) < 1.0, wherein CT1 is the central thickness of the first lens on the optical axis, CT2 is the central thickness of the second lens on the optical axis, CT4 is the central thickness of the fourth lens on the optical axis, and CT5 is the central thickness of the fifth lens on the optical axis. More specifically, CT1, CT2, CT4, and CT5 may further satisfy: 0.7 < (CT1+ CT2)/(CT4+ CT5) < 1.0. Satisfy 0.5 < (CT1+ CT2)/(CT4+ CT5) < 1.0, be favorable to while correcting each aberration well, make the system keep compact and have shorter optical overall length.

In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < T12/Σ AT < 0.8, where T12 is the separation distance on the optical axis of the first lens and the second lens, and Σ AT is the sum of the separation distances on the optical axis of any adjacent two lenses of the first lens to the seventh lens. More specifically, T12 and Σ AT may further satisfy: 0.3 < T12/Σ AT < 0.6. The requirement that T12/Sigma AT is more than 0.3 and less than 0.8 is favorable for the system to obtain higher relative illumination.

In an exemplary embodiment, the first lens may have a negative optical power, and the image-side surface thereof may be concave. The focal power and the surface type design of the first lens are beneficial to balancing or reducing the spherical aberration and the coma aberration of the lens, and meanwhile, the ghost risk of the lens is reduced.

In an exemplary embodiment, the second lens may have a positive optical power, and the object-side surface thereof may be convex and the image-side surface thereof may be convex. The focal power and the surface type design of the second lens are beneficial to balancing or reducing the spherical aberration and the coma aberration of the lens, and simultaneously reducing the ghost risk of the lens.

In an exemplary embodiment, an image side surface of the fifth lens may be convex. The focal power and the surface type design of the fifth lens are beneficial to balancing or reducing the spherical aberration and the coma aberration of the lens, and simultaneously reducing the ghost risk of the lens.

In an exemplary embodiment, an image side surface of the sixth lens may be concave. The focal power and the surface type design of the sixth lens are beneficial to balancing or reducing the spherical aberration and the coma aberration of the lens, and meanwhile, the ghost risk of the lens is reduced.

In an exemplary embodiment, the object-side surface of the seventh lens element may be convex and the image-side surface may be concave. The optical power and the surface type design of the seventh lens are beneficial to balancing or reducing the spherical aberration and the coma aberration of the lens, and simultaneously reducing the ghost risk of the lens.

In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the first lens and the second lens. Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element on the imaging surface. The application provides an optical imaging lens with characteristics of miniaturization, wide angle, high imaging quality and the like. The optical imaging lens 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 optical imaging lens is more beneficial to 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 an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although seven lenses are exemplified in the embodiment, the optical imaging lens is not limited to include seven lenses. The optical imaging lens may also include other numbers of lenses, if desired.

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

Example 1

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

As shown in fig. 1, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex 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 convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative 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 optical imaging lens of embodiment 1, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm).

TABLE 1

In the present example, the total effective focal length f of the optical imaging lens is 1.71mm, the total length TTL of the optical imaging lens (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 optical imaging lens) is 4.25mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface of the optical imaging lens is 1.91mm, the maximum field angle FOV of the optical imaging lens is 112.1 °, and the ratio f/EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.08.

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:

wherein x is the position of the aspheric surface at the height h along the optical axisThe distance from the aspheric surface vertex is higher; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is a conic coefficient; ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S14 used in example 1₄、A₆、A₈、A₁₀、A₁₂、A₁₄And A₁₆。

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

6.5969E-01

-1.0002E+00

1.3723E+00

-1.2692E+00

5.0543E-01

0.0000E+00

S2

1.3073E+00

-9.1780E-01

3.5807E+00

-4.2268E+00

1.0961E+01

0.0000E+00

S3

2.3775E-01

-5.6415E-01

0.0000E+00

S4

-7.8742E-01

0.0000E+00

S5

-6.5545E-01

-3.1712E-01

-1.4997E+00

6.2540E+00

-7.9305E+00

4.6976E+00

0.0000E+00

S6

-1.2962E-01

-2.7596E-01

-1.1207E-01

5.8726E-01

-2.4798E-01

0.0000E+00

S7

-4.2531E-01

9.6382E-01

-2.1936E+00

4.0935E+00

-6.1861E+00

5.6124E+00

-2.1606E+00

S8

-1.5093E+00

9.1005E+00

-3.0209E+01

6.1358E+01

-7.2182E+01

4.4836E+01

-1.1288E+01

S9

-1.4214E+00

9.6181E+00

-3.1351E+01

6.0189E+01

-6.6848E+01

3.9605E+01

-9.7218E+00

S10

-7.7090E-02

1.6661E+00

-6.2826E+00

1.0601E+01

-8.7421E+00

3.4651E+00

-5.2846E-01

S11

1.1774E+00

-3.4181E+00

4.7606E+00

-6.0129E+00

5.8183E+00

-2.9947E+00

5.9202E-01

S12

1.5515E+00

-4.2232E+00

5.7189E+00

-4.5842E+00

2.1763E+00

-5.6194E-01

6.0340E-02

S13

-9.9206E-01

-1.0546E-01

1.7336E+00

-2.1626E+00

1.2565E+00

-3.6155E-01

4.1315E-02

S14

-5.5695E-01

5.2914E-01

-3.1692E-01

1.1452E-01

-2.2670E-02

1.8805E-03

0.0000E+00

TABLE 2

Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different angles of view. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens 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 optical imaging lens according to embodiment 1 can achieve good imaging quality.

Example 2

An optical imaging lens 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 structural diagram of an optical imaging lens according to embodiment 2 of the present application.

As shown in fig. 3, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex 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 convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave 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 optical imaging lens is 1.68mm, the total length TTL of the optical imaging lens is 4.19mm, a half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens is 1.92mm, the maximum field angle FOV of the optical imaging lens is 112.1 °, and the ratio f/EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.08.

Table 3 shows a basic parameter table of the optical imaging lens of embodiment 2, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 4 shows 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 formula (1) given in example 1 above.

TABLE 3

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

6.2383E-01

-9.5529E-01

1.5241E+00

-1.6288E+00

7.9303E-01

0.0000E+00

S2

1.2998E+00

-1.4966E+00

8.0049E+00

-1.4764E+01

2.1373E+01

0.0000E+00

S3

2.5988E-01

-5.8269E-01

-1.9409E+00

3.9580E+00

0.0000E+00

S4

-1.1190E+00

1.3706E+00

-6.7664E+00

1.2362E+01

-6.3627E+00

0.0000E+00

S5

-1.0084E+00

7.7860E-01

-2.1320E+00

-7.4121E+00

3.4400E+01

-2.8431E+01

0.0000E+00

S6

-4.9670E-01

3.0424E-01

-1.1227E-01

-1.8546E-01

4.6664E-01

0.0000E+00

S7

-2.4631E-01

1.4260E-01

2.5112E-01

-3.7874E-01

-6.6708E-02

1.5041E-01

0.0000E+00

S8

-2.0004E-01

3.8296E-01

9.8488E-01

-3.0293E+00

3.5411E+00

-2.3690E+00

7.4579E-01

S9

-5.1626E-01

1.4540E+00

7.8669E-01

-5.7421E+00

8.1463E+00

-5.5246E+00

1.5240E+00

S10

-7.8867E-02

1.0124E+00

-3.1818E+00

6.2033E+00

-6.9196E+00

4.0203E+00

-9.2348E-01

S11

9.9401E-01

-2.2402E+00

5.4278E-01

3.1853E+00

-5.7806E+00

4.3671E+00

-1.2133E+00

S12

1.3133E+00

-3.8500E+00

5.2951E+00

-4.2156E+00

1.9754E+00

-5.0431E-01

5.3760E-02

S13

-6.5970E-01

-1.4255E+00

4.0609E+00

-4.2670E+00

2.3152E+00

-6.4656E-01

7.3563E-02

S14

-9.8023E-01

1.0506E+00

-6.7079E-01

2.6285E-01

-6.0535E-02

6.2029E-03

0.0000E+00

TABLE 4

Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points 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 optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different angles of view. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens 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 optical imaging lens according to embodiment 2 can achieve good imaging quality.

Example 3

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

As shown in fig. 5, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has positive 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 convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave 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 optical imaging lens is 1.72mm, the total length TTL of the optical imaging lens is 4.22mm, a half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens is 1.93mm, the maximum field angle FOV of the optical imaging lens is 112.1 °, and the ratio f/EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.08.

Table 5 shows a basic parameter table of the optical imaging lens of embodiment 3, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 6 shows 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 formula (1) given in example 1 above.

TABLE 5

TABLE 6

Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the deviation of the convergent focal points 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 optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different angles of view. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens 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 optical imaging lens according to embodiment 3 can achieve good imaging quality.

Example 4

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

As shown in fig. 7, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

The first lens element E1 has negative power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave 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 optical imaging lens is 1.72mm, the total length TTL of the optical imaging lens is 4.07mm, a half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens is 1.92mm, the maximum field angle FOV of the optical imaging lens is 112.0 °, and the ratio f/EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.08.

Table 7 shows a basic parameter table of the optical imaging lens of embodiment 4, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 8 shows 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 formula (1) given in example 1 above.

TABLE 7

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

5.5450E-01

-7.8082E-01

9.5036E-01

-7.5516E-01

2.9072E-01

0.0000E+00

S2

1.1402E+00

-8.4850E-01

4.1031E+00

-1.0571E+01

2.3958E+01

0.0000E+00

S3

1.2887E-01

-7.2546E-01

0.0000E+00

S4

-7.0752E-01

0.0000E+00

S5

-7.2764E-01

4.4338E-01

-4.1753E+00

1.4316E+01

-2.1322E+01

1.4942E+01

0.0000E+00

S6

-1.9291E-02

-1.6734E+00

5.5518E+00

-9.9272E+00

7.1060E+00

0.0000E+00

S7

-1.3466E-01

-1.5042E+00

4.3585E+00

4.6098E+00

-4.0476E+01

6.6429E+01

-3.6087E+01

S8

5.3536E-03

3.1350E-01

-4.7922E+00

2.6350E+01

-6.2450E+01

6.9754E+01

-2.9999E+01

S9

-2.3887E-01

8.8636E-01

-1.1965E+00

5.4994E-01

0.0000E+00

S10

-1.2530E-01

1.2730E-01

-4.9493E-02

0.0000E+00

S11

1.0835E+00

-2.9350E+00

2.3980E+00

2.1444E+00

-8.7096E+00

8.8219E+00

-2.9590E+00

S12

1.3422E+00

-3.5891E+00

5.0408E+00

-4.4673E+00

2.4563E+00

-7.5382E-01

9.7530E-02

S13

-7.1201E-01

-5.1761E-01

2.1959E+00

-2.6136E+00

1.5906E+00

-4.9968E-01

6.3639E-02

S14

-7.5333E-01

8.0812E-01

-6.3929E-01

3.2632E-01

-8.9940E-02

9.8461E-03

0.0000E+00

TABLE 8

Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which represents the deviation of the convergent focal points 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 optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different angles of view. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens 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 optical imaging lens according to embodiment 4 can achieve good imaging quality.

Example 5

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

As shown in fig. 9, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

In this example, the total effective focal length f of the optical imaging lens is 1.96mm, the total length TTL of the optical imaging lens is 4.65mm, a half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens is 2.25mm, the maximum field angle FOV of the optical imaging lens is 112.1 °, and the ratio f/EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.80.

Table 9 shows a basic parameter table of the optical imaging lens of embodiment 5, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 10 shows 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 formula (1) given in example 1 above.

TABLE 9

Watch 10

Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points 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 optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different angles of view. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.

Example 6

An optical imaging lens 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 according to embodiment 6 of the present application.

As shown in fig. 11, the optical imaging lens includes, in order from an object side to an image side: a first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image forming surface S17.

In this example, the total effective focal length f of the optical imaging lens is 1.88mm, the total length TTL of the optical imaging lens is 4.54mm, a half ImgH of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens is 2.25mm, the maximum field angle FOV of the optical imaging lens is 120.1 °, and the ratio f/EPD of the total effective focal length f of the optical imaging lens to the entrance pupil diameter EPD of the optical imaging lens is 2.80.

Table 11 shows a basic parameter table of the optical imaging lens of embodiment 6, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Table 12 shows 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 formula (1) given in example 1 above.

TABLE 11

Flour mark

A4

A6

A8

A10

A12

A14

A16

S1

3.6289E-01

-3.8169E-01

3.3038E-01

-1.7483E-01

3.9433E-02

0.0000E+00

S2

1.1027E+00

-1.7347E+00

4.5318E+00

-6.9807E+00

6.9850E+00

0.0000E+00

S3

2.0320E-01

-2.8868E-01

0.0000E+00

S4

-5.7271E-01

0.0000E+00

S5

-5.2562E-01

-3.1659E-01

2.5211E-01

-2.8736E+00

5.9690E+00

-4.3596E+00

0.0000E+00

S6

-1.7453E-01

2.4983E-01

-9.6078E-01

9.5540E-01

-3.8270E-01

0.0000E+00

S7

-3.9026E-01

5.5129E-01

-3.5839E-01

-6.0411E-01

1.1961E+00

-7.5086E-01

1.5657E-01

S8

-6.3311E-01

2.1621E+00

-3.6445E+00

3.5852E+00

-1.6386E+00

7.0030E-02

1.4717E-01

S9

-7.0764E-01

2.7894E+00

-4.7900E+00

5.3160E+00

-3.7279E+00

1.4499E+00

-2.3751E-01

S10

8.4061E-02

-6.3482E-01

1.5693E+00

-1.6061E+00

8.7825E-01

-2.6365E-01

3.3717E-02

S11

0.0000E+00

S12

0.0000E+00

S13

0.0000E+00

S14

0.0000E+00

TABLE 12

Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points 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 optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different angles of view. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens 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
							DT12/DT61	0.45	0.46	0.51	0.53	0.54	0.50
ImgH/TTL	0.45	0.46	0.46	0.47	0.48	0.50
							f/f1+f/f7	-0.87	-0.82	-0.94	-0.65	-0.73	-0.72
f2/(R3-R4)	0.43	0.47	0.32	0.33	0.42	0.36
							f/f45	1.04	1.25	1.29	0.97	1.07	1.01
f67/f23	-1.27	-0.63	-0.66	-1.97	-0.90	-1.34
							(R1-R2)/(R1+R2)	0.96	0.92	0.93	0.92	0.94	0.84
R6/R5	0.79	0.71	1.13	0.72	0.86	0.80
							\|R7/f4+R12/f6\|	0.87	1.12	0.88	1.34	1.12	1.12
TD/SL	0.87	0.86	0.90	0.88	0.88	0.90
							CT6/ET6	0.58	0.42	0.45	0.45	0.61	0.49
(R13+R14)/R10	-0.43	-0.93	-0.92	-0.81	-0.32	-0.29
							ET3/ET2	0.92	0.98	0.87	0.83	0.84	0.77
ET4/ET5	0.87	1.08	0.82	1.20	0.78	0.80
							SAG42/(SAG42+SAG51)	0.60	0.56	0.52	0.47	0.64	0.64
(CT1+CT2)/(CT4+CT5)	0.76	0.82	0.86	0.92	0.78	0.76
							T12/ΣAT	0.55	0.49	0.41	0.58	0.52	0.58

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 optical imaging lens described above.

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

1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

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

a second lens having an optical power;

a third lens having optical power;

a fourth lens having a positive optical power;

a fifth lens having optical power;

a sixth lens having a negative optical power; and

a seventh lens having a negative optical power;

the maximum field angle FOV of the optical imaging lens satisfies the following conditions: 105 < FOV < 125.

2. The optical imaging lens of claim 1, wherein the maximum effective radius DT12 of the image side surface of the first lens and the maximum effective radius DT61 of the object side surface of the sixth lens satisfy: 0.3 < DT12/DT61 < 0.8.

3. The optical imaging lens of claim 1, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy: imgH/TTL is more than 0.3 and less than 0.8.

4. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens and the effective focal length f7 of the seventh lens satisfy: -1.0 < f/f1+ f/f7 < 0.

5. The optical imaging lens of claim 1, wherein the effective focal length f2 of the second lens, the radius of curvature R3 of the object side surface of the second lens, and the radius of curvature R4 of the image side surface of the second lens satisfy: f2/(R3-R4) is more than 0 and less than 1.0.

6. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the combined focal length f45 of the fourth lens and the fifth lens satisfy: f/f45 is more than 0.5 and less than 1.5.

7. The optical imaging lens of claim 1, wherein a combined focal length f23 of the second and third lenses and a combined focal length f67 of the sixth and seventh lenses satisfy: -2.0 < f67/f23 < -0.5.

8. The optical imaging lens of claim 1, wherein the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R2 of the image-side surface of the first lens satisfy: 0 < (R1-R2)/(R1+ R2) < 1.0.

9. The optical imaging lens of claim 1, wherein the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R6 of the image-side surface of the third lens satisfy: 0.5 < R6/R5 < 1.5.

10. The optical imaging lens of claim 1, wherein an effective focal length f4 of the fourth lens, an effective focal length f6 of the sixth lens, a radius of curvature R7 of an object-side surface of the fourth lens, and a radius of curvature R12 of an image-side surface of the sixth lens satisfy: 0.5 < | R7/f4+ R12/f6| < 1.5.

11. The optical imaging lens of claim 1, wherein a center thickness CT6 of the sixth lens on the optical axis and an edge thickness ET6 of the sixth lens satisfy: 0.3 < CT6/ET6 < 0.8.

12. The optical imaging lens of claim 1, wherein the radius of curvature R10 of the image-side surface of the fifth lens, the radius of curvature R13 of the object-side surface of the seventh lens, and the radius of curvature R14 of the image-side surface of the seventh lens satisfy: -1.0 < (R13+ R14)/R10 < 0.

13. The optical imaging lens of claim 1, wherein the edge thickness ET2 of the second lens and the edge thickness ET3 of the third lens satisfy: 0.5 < ET3/ET2 < 1.0.

14. The optical imaging lens of claim 1, wherein the edge thickness ET4 of the fourth lens and the edge thickness ET5 of the fifth lens satisfy: 0.5 < ET4/ET5 < 1.5.

15. The optical imaging lens of claim 1, wherein a distance SAG42 on the optical axis from an intersection point of an image side surface of the fourth lens and the optical axis to an effective radius vertex of the image side surface of the fourth lens to a distance SAG51 on the optical axis from an intersection point of an object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens satisfies: 0.3 < SAG42/(SAG42+ SAG51) < 0.8.

16. The optical imaging lens 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, a center thickness CT4 of the fourth lens on the optical axis, and a center thickness CT5 of the fifth lens on the optical axis satisfy: 0.5 < (R) >

(CT1+CT2)/(CT4+CT5)＜1.0。

17. The optical imaging lens according to any one of claims 1 to 16, wherein a sum Σ AT of a separation distance T12 of the first lens and the second lens on the optical axis and a separation distance on the optical axis of any two adjacent lenses of the first lens to the seventh lens satisfies: 0.3 < T12/Σ AT < 0.8.

18. The optical imaging lens of any one of claims 1 to 16, characterized in that the optical imaging lens further comprises a diaphragm,

the distance TD of the object side surface of the first lens to the image side surface of the seventh lens on the optical axis and the distance SL of the diaphragm to the imaging surface of the optical imaging lens on the optical axis satisfy that: TD/SL is more than 0.5 and less than 1.0.

19. The optical imaging lens of any one of claims 1 to 16, wherein the first lens has a negative optical power and its image side surface is concave.

20. The optical imaging lens of any one of claims 1 to 16, wherein the second lens element has a positive optical power, and wherein the object side surface is convex and the image side surface is convex.

21. The optical imaging lens of any one of claims 1 to 16, wherein the image side surface of the fifth lens is convex.

22. The optical imaging lens of any one of claims 1 to 16, wherein the image side surface of the sixth lens is concave.

23. The optical imaging lens of any one of claims 1 to 16, wherein the seventh lens element has a convex object-side surface and a concave image-side surface.

24. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises:

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

a second lens having an optical power;

a third lens having optical power;

a fourth lens having a positive optical power;

a fifth lens having optical power;

a sixth lens having a negative optical power; and

a seventh lens having a negative optical power;

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: 0 < (R1-R2)/(R1+ R2) < 1.0.

25. The optical imaging lens of claim 24, wherein the maximum effective radius DT12 of the image side surface of the first lens and the maximum effective radius DT61 of the object side surface of the sixth lens satisfy: 0.3 < DT12/DT61 < 0.8.

26. The optical imaging lens of claim 24, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy: imgH/TTL is more than 0.3 and less than 0.8.

27. The optical imaging lens of claim 24 wherein the total effective focal length f of the optical imaging lens, the effective focal length f1 of the first lens and the effective focal length f7 of the seventh lens satisfy: -1.0 < f/f1+ f/f7 < 0.

28. The optical imaging lens of claim 24, wherein the effective focal length f2 of the second lens, the radius of curvature R3 of the object side surface of the second lens, and the radius of curvature R4 of the image side surface of the second lens satisfy: f2/(R3-R4) is more than 0 and less than 1.0.

29. The optical imaging lens of claim 24, wherein the total effective focal length f of the optical imaging lens and the combined focal length f45 of the fourth lens and the fifth lens satisfy: f/f45 is more than 0.5 and less than 1.5.

30. The optical imaging lens of claim 24, wherein a combined focal length f23 of the second and third lenses and a combined focal length f67 of the sixth and seventh lenses satisfy: -2.0 < f67/f23 < -0.5.

31. The optical imaging lens of claim 24, wherein the radius of curvature R5 of the object-side surface of the third lens and the radius of curvature R6 of the image-side surface of the third lens satisfy: 0.5 < R6/R5 < 1.5.

32. The optical imaging lens of claim 24, wherein the effective focal length f4 of the fourth lens, the effective focal length f6 of the sixth lens, the radius of curvature R7 of the object-side surface of the fourth lens, and the radius of curvature R12 of the image-side surface of the sixth lens satisfy: 0.5 < | R7/f4+ R12/f6| < 1.5.

33. The optical imaging lens of claim 24, wherein a center thickness CT6 of the sixth lens on the optical axis and an edge thickness ET6 of the sixth lens satisfy: 0.3 < CT6/ET6 < 0.8.

34. The optical imaging lens of claim 24, wherein the radius of curvature R10 of the image-side surface of the fifth lens, the radius of curvature R13 of the object-side surface of the seventh lens, and the radius of curvature R14 of the image-side surface of the seventh lens satisfy: -1.0 < (R13+ R14)/R10 < 0.

35. The optical imaging lens of claim 24, wherein the edge thickness ET2 of the second lens and the edge thickness ET3 of the third lens satisfy: 0.5 < ET3/ET2 < 1.0.

36. The optical imaging lens of claim 24, wherein the edge thickness ET4 of the fourth lens and the edge thickness ET5 of the fifth lens satisfy: 0.5 < ET4/ET5 < 1.5.

37. The optical imaging lens of claim 24, wherein a distance SAG42 on the optical axis from an intersection point of an image side surface of the fourth lens and the optical axis to an effective radius vertex of the image side surface of the fourth lens to a distance SAG51 on the optical axis from an intersection point of an object side surface of the fifth lens and the optical axis to an effective radius vertex of the object side surface of the fifth lens satisfies: 0.3 < SAG42/(SAG42+ SAG51) < 0.8.

38. The optical imaging lens of claim 24, 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, a center thickness CT4 of the fourth lens on the optical axis, and a center thickness CT5 of the fifth lens on the optical axis satisfy: 0.5 < (CT1+ CT2)/(CT4+ CT5) < 1.0.

39. The optical imaging lens of claim 38, wherein the maximum field angle FOV of the optical imaging lens satisfies: 105 < FOV < 125.

40. An optical imaging lens according to any one of claims 24 to 39, wherein a sum Σ AT of a separation distance T12 between the first lens and the second lens on the optical axis and a separation distance on the optical axis between any adjacent two of the first lens to the seventh lens satisfies: 0.3 < T12/Σ AT < 0.8.

41. The optical imaging lens of any one of claims 24-39, characterized in that the optical imaging lens further comprises a diaphragm,

42. The optical imaging lens of any of claims 24-39, wherein the first lens has a negative optical power and its image side surface is concave.

43. The optical imaging lens of any of claims 24-39, wherein the second lens element has positive optical power and has a convex object-side surface and a convex image-side surface.

44. The optical imaging lens of any one of claims 24-39, wherein the image side surface of the fifth lens is convex.

45. The optical imaging lens of any one of claims 24-39, wherein the image side surface of the sixth lens is concave.

46. The optical imaging lens of any one of claims 24-39, wherein the seventh lens element has a convex object-side surface and a concave image-side surface.