CN212181144U - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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CN212181144U
CN212181144U CN202020810730.9U CN202020810730U CN212181144U CN 212181144 U CN212181144 U CN 212181144U CN 202020810730 U CN202020810730 U CN 202020810730U CN 212181144 U CN212181144 U CN 212181144U
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lens
optical imaging
imaging lens
optical
image
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张佳莹
戴付建
赵烈烽
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having a focal power; the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length ImgH of the effective pixel area of the optical imaging lens satisfy that: TTL/ImgH is less than or equal to 1.2; the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens meet the following conditions: f/EPD is less than or equal to 1.8; and the total effective focal length f of the optical imaging lens and half of the maximum field angle Semi-FOV of the optical imaging lens meet the following conditions: f × tan (Semi-FOV) > 4.6 mm.

Description

Optical imaging lens
Technical Field
The application relates to the field of optical elements, in particular to an optical imaging lens.
Background
With the rapid development of electronic products, the application of optical imaging lenses is also more and more extensive. On one hand, with the trend of light and thin development of electronic products, the optical imaging lens not only needs to have good image quality, but also needs to have light and thin appearance, so that the product cost can be effectively reduced and the humanized design can be more met. On the other hand, users also put higher demands on the image quality of objects captured by the optical imaging lens of electronic products. Meanwhile, with the advancement of semiconductor manufacturing technology, the pixel size of the photosensitive element is decreasing, so that the optical imaging lens mounted on electronic products such as mobile phones and digital cameras is gradually becoming smaller, has a large field of view, and has a high pixel density.
In order to meet the requirements of high pixel and large field angle, an optical imaging lens commonly used in the market at present needs to be configured with a large aperture, so that the size of the lens is long, and the requirement of matching a high-pixel photosensitive chip is difficult to achieve. In addition, in order to further increase the field angle, distortion is increased, that is, the outgoing angle of the principal ray is too large, so that the resolution of the lens is not sufficient. In order to meet the development demand of the market, the optical imaging lens needs to shorten the total length of the lens as much as possible and reduce the number of lenses, but this will reduce the degree of freedom of design, increase the difficulty of design, and is difficult to meet the imaging demand of high quality.
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, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having a focal power; the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length ImgH of the effective pixel area of the optical imaging lens can satisfy the following conditions: TTL/ImgH is less than or equal to 1.2; the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy the following conditions: f/EPD is less than or equal to 1.8; and the total effective focal length f of the optical imaging lens and half of the maximum field angle Semi-FOV of the optical imaging lens can satisfy: f × tan (Semi-FOV) > 4.6 mm.
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 effective focal length f1 of the first lens, the radius of curvature R1 of the object-side surface of the first lens, and the radius of curvature R2 of the image-side surface of the first lens may satisfy: f1/(R1+ R2) < 1.3 < 0.8.
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: -1.0 < (R3+ R4)/f2 < -0.5.
In one embodiment, the effective focal length f3 of the third lens and the radius of curvature R5 of the object side of the third lens may satisfy: r5/f3 is more than 0.3 and less than 0.8.
In one embodiment, the total effective focal length f of the optical imaging lens and the combined focal length f123 of the first lens, the second lens and the third lens may satisfy: f/f123 is more than 0.8 and less than 1.3.
In one embodiment, the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, and the combined focal length f67 of the sixth lens and the seventh lens may satisfy: 0.5 < (f7-f6)/f67 < 1.0.
In one embodiment, a radius of curvature R11 of the object-side surface of the sixth lens, a radius of curvature R12 of the image-side surface of the sixth 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: 0.7 < (R13+ R14)/(R11+ R12) < 1.2.
In one embodiment, a distance SAG71 on the optical axis from the intersection point of the object-side surface of the seventh lens and the optical axis to the effective radius vertex of the object-side surface of the seventh lens and a distance SAG72 on the optical axis from the intersection point of the image-side surface of the seventh lens and the optical axis to the effective radius vertex of the image-side surface of the seventh lens may satisfy: 0.5 < SAG72/SAG71 < 1.0.
In one embodiment, a distance SAG41 on the optical axis from the intersection point of the object-side surface of the fourth lens and the optical axis to the effective radius vertex of the object-side surface of the fourth lens, 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 SAG62 on the optical axis from the intersection point of the image-side surface of the sixth lens and the optical axis to the effective radius vertex of the image-side surface of the sixth lens may satisfy: 0.7 < (SAG41+ SAG42)/SAG62 < 1.2.
In one embodiment, the edge thickness ET2 of the second lens and the edge thickness ET7 of the seventh lens may satisfy: 0.3 < ET2/ET7 < 0.8.
In one embodiment, the edge thickness ET5 of the fifth lens and the edge thickness ET6 of the sixth lens may satisfy: 0.5 < ET5/ET6 < 1.0.
In one embodiment, a central thickness CT1 of the first lens on the optical axis, a central thickness CT2 of the second lens on the optical axis, a central thickness CT3 of the third lens on the optical axis, a central thickness CT5 of the fifth lens on the optical axis, a central thickness CT6 of the sixth lens on the optical axis, and a central thickness CT7 of the seventh lens on the optical axis may satisfy: 0.8 < (CT1+ CT2+ CT3)/(CT5+ CT6+ CT7) < 1.3.
In one embodiment, the central thickness CT4 of the fourth lens on the optical axis and the separation distance T34 of the third lens and the fourth lens on the optical axis may satisfy: 0.7 < CT4/T34 < 1.2.
In one embodiment, the first lens element has a positive optical power, a convex object-side surface and a concave image-side surface.
In one embodiment, the second lens element has a negative power and has a convex object-side surface and a concave image-side surface.
In one embodiment, the object side surface of the third lens is convex.
In one embodiment, the sixth lens has positive optical power and the object side surface is convex.
In one embodiment, the seventh lens element has a negative optical power, and the object side surface is concave and the image side surface is concave.
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 an optical power; a second lens having an optical power; a third lens having a positive optical power; a fourth lens having an optical power; a fifth lens having optical power; a sixth lens having a refractive power, an image-side surface of which is convex; and a seventh lens having optical power; the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length ImgH of the effective pixel area of the optical imaging lens can satisfy the following conditions: TTL/ImgH is less than or equal to 1.2; the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy the following conditions: f/EPD is less than or equal to 1.8.
The optical imaging lens is applicable to portable electronic products, and has light weight, thinness, 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 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 6;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;
fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application; and
fig. 16A to 16D 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 8.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that 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, an optical imaging lens according to the present application may satisfy: TTL/ImgH is less than or equal to 1.2, 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 diagonal length of the effective pixel area of the optical imaging lens. The TTL/ImgH is less than or equal to 1.2, the system structure is compact, the requirement of miniaturization is met, and the system has the characteristics of high pixel, large aperture and ultrathin.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f/EPD is less than or equal to 1.8, wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. The f/EPD is less than or equal to 1.8, so that the optical imaging lens has a larger aperture, the light transmission quantity of the system can be increased, and the imaging effect in a dark environment is enhanced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: f × tan (Semi-FOV) > 4.6mm, where f is the total effective focal length of the optical imaging lens and the Semi-FOV is half of the maximum field angle of the optical imaging lens. The condition f multiplied by tan (Semi-FOV) > 4.6mm is satisfied, and the imaging effect of a large image plane of the system can be realized.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.8 < f1/(R1+ R2) < 1.3, where f1 is the effective focal length of the first lens, R1 is the radius of curvature of the object-side surface of the first lens, and R2 is the radius of curvature of the image-side surface of the first lens. More specifically, f1, R1, and R2 may further satisfy: f1/(R1+ R2) < 1.2 < 0.8. Satisfying 0.8 < f1/(R1+ R2) < 1.3, it is possible to reasonably distribute the power of the first lens and reduce the total length of the system, realize miniaturization of the module, and balance the tolerance sensitivity of the system.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: -1.0 < (R3+ R4)/f2 < -0.5, wherein 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, R3, R4, and f2 may further satisfy: -0.8 < (R3+ R4)/f2 < -0.5. Satisfy-1.0 < (R3+ R4)/f2 < -0.5, can effectively control the contribution amount of the second lens to the fifth order spherical aberration of the system, and further compensate the third order spherical aberration generated by the lens, so that the system has good imaging quality on axis.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < R5/f3 < 0.8, where f3 is the effective focal length of the third lens and R5 is the radius of curvature of the object side of the third lens. More specifically, R5 and f3 may further satisfy: r5/f3 is more than 0.4 and less than 0.6. The requirement that R5/f3 is more than 0.3 and less than 0.8 is met, the deflection angle of the marginal field of view in the third lens can be controlled, and the sensitivity of the system can be effectively reduced.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: and f/f123 is more than 0.8 and less than 1.3, wherein f is the total effective focal length of the optical imaging lens, and f123 is the combined focal length of the first lens, the second lens and the third lens. More specifically, f and f123 further satisfy: f/f123 is more than 0.9 and less than 1.1. F/f123 is more than 0.8 and less than 1.3, so that the system has good imaging quality, and the field curvature of the system can be controlled in a reasonable range.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < (f7-f6)/f67 < 1.0, wherein f6 is an effective focal length of the sixth lens, f7 is an effective focal length of the seventh lens, and f67 is a combined focal length of the sixth lens and the seventh lens. More specifically, f7, f6, and f67 may further satisfy: 0.7 < (f7-f6)/f67 < 0.9. Satisfying 0.5 < (f7-f6)/f67 < 1.0, the contribution amount of the aberration of the sixth lens and the seventh lens can be controlled to balance with the aberration generated by the front end optical element, so that the system aberration is in a reasonable level state.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.7 < (R13+ R14)/(R11+ R12) < 1.2, wherein R11 is a radius of curvature of an object-side surface of the sixth lens, R12 is a radius of curvature of an image-side surface of the sixth lens, R13 is a radius of curvature of an object-side surface of the seventh lens, and R14 is a radius of curvature of an image-side surface of the seventh lens. More specifically, R13, R14, R11 and R12 may further satisfy: 0.8 < (R13+ R14)/(R11+ R12) < 1.0. Satisfy 0.7 < (R13+ R14)/(R11+ R12) < 1.2, be favorable to balancing the aberration of the system, improve the imaging quality of the system.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 & lt SAG72/SAG71 & lt 1.0, wherein SAG71 is a distance on the optical axis from the intersection point of the object side surface of the seventh lens and the optical axis to the effective radius vertex of the object side surface of the seventh lens, and SAG72 is a distance on the optical axis from the intersection point of the image side surface of the seventh lens and the optical axis to the effective radius vertex of the image side surface of the seventh lens. More specifically, SAG72 and SAG71 further may satisfy: 0.6 < SAG72/SAG71 < 0.9. The requirement that 0.5 & lt SAG72/SAG71 & lt 1.0 is met is favorable for better balancing the relation between the miniaturization of the module and the relative illumination of the off-axis field of view.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.7 < (SAG41+ SAG42)/SAG62 < 1.2, wherein SAG41 is a distance on an optical axis from an intersection point of an object side surface of the fourth lens and the optical axis to an effective radius vertex of the object side surface of the fourth lens, SAG42 is a distance 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 an image side surface of the fourth lens, and SAG62 is a distance on the optical axis from an intersection point of an image side surface of the sixth lens and the optical axis to an effective radius vertex of an image side surface of the sixth lens. More specifically, SAG41, SAG42, and SAG62 may further satisfy: 0.7 < (SAG41+ SAG42)/SAG62 < 1.0. The requirement of 0.7 < (SAG41+ SAG42)/SAG62 < 1.2 is favorable for adjusting the field curvature of the system, the ghost image between the fourth lens and the sixth lens can be well improved, the processing difficulty can be reduced, and the assembly of the optical imaging lens has higher stability.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.3 < ET2/ET7 < 0.8, wherein ET2 is the edge thickness of the second lens and ET7 is the edge thickness of the seventh lens. More specifically, ET2 and ET7 further satisfy: 0.4 < ET2/ET7 < 0.6. The requirement that ET2/ET7 is more than 0.3 and less than 0.8 is met, the distortion contribution amount of each field of the system is favorably controlled in a reasonable range, and finally the distortion amount of the system is less than 3%, so that the imaging quality is improved.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.5 < ET5/ET6 < 1.0, wherein ET5 is the edge thickness of the fifth lens and ET6 is the edge thickness of the sixth lens. More specifically, ET5 and ET6 further satisfy: 0.7 < ET5/ET6 < 0.9. The requirements that ET5/ET6 is more than 0.5 and less than 1.0 are met, the system size can be effectively reduced, and the optical element is ensured to have good processing characteristics.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.8 < (CT1+ CT2+ CT3)/(CT5+ CT6+ CT7) < 1.3, wherein CT1 is a central thickness of the first lens on the optical axis, CT2 is a central thickness of the second lens on the optical axis, CT3 is a central thickness of the third lens on the optical axis, CT5 is a central thickness of the fifth lens on the optical axis, CT6 is a central thickness of the sixth lens on the optical axis, and CT7 is a central thickness of the seventh lens on the optical axis. More specifically, CT1, CT2, CT3, CT5, CT6, and CT7 further satisfy: 0.9 < (CT1+ CT2+ CT3)/(CT5+ CT6+ CT7) < 1.1. The requirement of 0.8 < (CT1+ CT2+ CT3)/(CT5+ CT6+ CT7) < 1.3 is met, the field curvature of the system can be effectively ensured, the off-axis visual field of the system can obtain good imaging quality, the total length of the system can be effectively reduced, and the ultrathin characteristic is realized.
In an exemplary embodiment, an optical imaging lens according to the present application may satisfy: 0.7 < CT4/T34 < 1.2, wherein CT4 is the central thickness of the fourth lens on the optical axis, and T34 is the separation distance between the third lens and the fourth lens on the optical axis. More specifically, CT4 and T34 further satisfy: 0.8 < CT4/T34 < 1.1. The requirement that CT4/T34 is more than 0.7 and less than 1.2 is met, ghost images are favorably avoided between the third lens and the fourth lens, and the optical imaging lens has better spherical aberration and distortion correction functions.
In an exemplary embodiment, the third lens may have a positive optical power. The third lens with positive focal power can improve the light convergence capability, is beneficial to improving the field curvature of the system and balancing the aberration of the system.
In an exemplary embodiment, an image side surface of the sixth lens may be convex. The sixth lens with the convex image side surface can effectively reduce the light ray incidence angle, so that the light rays cannot be deflected at a large angle, and great help is brought to the process.
In an exemplary embodiment, the first lens may have a positive optical power, and the object side surface may be convex and the image side surface may be concave. The first lens with positive focal power has a convex object-side surface and a concave image-side surface, which is beneficial to improving the relative illumination of the off-axis field of view and increasing the field angle.
In an exemplary embodiment, the second lens may have a negative power, and the object side surface may be convex and the image side surface may be concave. The second lens with negative focal power has a convex object-side surface and a concave image-side surface, which is beneficial to controlling the light angle and reducing the aberration of the system.
In an exemplary embodiment, the object side surface of the third lens may be convex. The third lens with the convex object side surface can enable the central light to have good convergence capacity and improve the spherical aberration of the system.
In an exemplary embodiment, the sixth lens may have a positive optical power, and the object-side surface thereof may be convex. The object side surface of the sixth lens with positive focal power is a convex surface, so that the field angle is increased, the ray incidence angle at the position of the diaphragm is reduced, the pupil aberration is reduced, and the imaging quality is improved.
In an exemplary embodiment, the seventh lens element may have a negative optical power, and the object-side surface thereof may be concave and the image-side surface thereof may be concave. The seventh lens with negative focal power can effectively reduce the total length of the system and realize the characteristics of miniaturization, ultrathin and the like of the lens.
In an exemplary embodiment, an optical imaging lens according to the present application further includes a stop disposed between the object side and the first 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 the characteristics of miniaturization, large image surface, large aperture, ultra-thin, 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 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 positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave 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 concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex 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.
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).
Figure BDA0002493824480000081
Figure BDA0002493824480000091
TABLE 1
In the present example, the total effective focal length f of the optical imaging lens is 4.92mm, 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 5.74mm, the half ImgH of the diagonal length of the effective pixel region on the imaging surface S17 of the optical imaging lens is 4.79mm, the half semifov of the maximum field angle of the optical imaging lens is 43.9 °, 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 1.78.
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 BDA0002493824480000092
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 -4.6663E-03 -7.9638E-03 -2.8720E-03 -5.9866E-04 -5.1079E-05 5.5274E-05 3.2717E-05
S2 -6.9919E-02 -1.3697E-03 2.5298E-03 1.2251E-03 5.3886E-04 2.1946E-04 9.6007E-05
S3 -7.0887E-02 1.1400E-02 1.0614E-03 3.6972E-04 3.1445E-04 6.5411E-05 4.0454E-05
S4 -3.2379E-02 4.4941E-06 -4.4761E-03 -3.0534E-03 -9.3853E-04 -1.3811E-04 2.4771E-04
S5 5.3052E-02 1.7441E-02 6.4032E-03 -4.0813E-04 -8.7552E-04 -4.0361E-04 6.2882E-05
S6 1.3045E-04 1.0614E-02 6.2447E-03 2.4671E-03 9.7077E-04 3.1293E-04 1.1895E-04
S7 -2.2024E-01 -2.5571E-02 -5.2684E-04 1.0974E-03 7.0062E-04 2.3978E-04 6.3332E-05
S8 -3.3943E-01 -6.5147E-03 1.3326E-02 7.9051E-03 2.3060E-03 3.0236E-04 -2.2103E-04
S9 -3.8543E-01 1.6179E-02 -2.3485E-02 8.4134E-03 7.3917E-03 3.0553E-03 5.1775E-04
S10 -4.7306E-01 1.2606E-01 -7.7552E-02 3.6615E-03 5.0664E-03 -3.9137E-03 -1.1310E-03
S11 -1.3928E+00 2.6210E-01 3.0484E-02 -5.3260E-02 5.7095E-03 8.6915E-03 -4.0627E-03
S12 -2.9822E-01 9.4737E-02 4.3580E-02 -4.0146E-02 1.6435E-02 1.9611E-03 -2.6305E-03
S13 -8.4271E-01 6.5253E-01 -3.0970E-01 1.3333E-01 -3.9434E-02 1.2897E-02 -4.4291E-03
S14 -4.5633E+00 9.4664E-01 -3.4271E-01 1.7391E-01 -7.1106E-02 2.9378E-02 -1.7022E-02
TABLE 2-1
Figure BDA0002493824480000093
Figure BDA0002493824480000101
Tables 2 to 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 image heights. 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 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 positive 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 concave 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 convex 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 optical imaging lens is 4.92mm, the total length TTL of the optical imaging lens is 5.70mm, a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.79mm, a half Semi-FOV of the maximum angle of view of the optical imaging lens is 43.6 °, 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 1.78.
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). 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 BDA0002493824480000111
TABLE 3
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -2.8222E-03 -6.8704E-03 -2.3101E-03 -4.2425E-04 9.0636E-06 5.9946E-05 3.3056E-05
S2 -6.9522E-02 -1.7675E-03 2.9336E-03 1.2002E-03 4.9406E-04 2.0396E-04 1.0040E-04
S3 -6.6904E-02 9.3125E-03 1.3685E-03 2.5325E-04 2.5904E-04 6.4104E-05 4.9390E-05
S4 -3.3149E-02 -2.8118E-03 -4.7595E-03 -2.7899E-03 -6.1099E-04 -1.9203E-04 1.1513E-04
S5 3.8122E-02 1.3596E-02 5.5872E-03 3.4404E-05 -3.4352E-04 -3.8383E-04 -5.1939E-05
S6 -1.1807E-03 8.8502E-03 5.8317E-03 2.5384E-03 1.0035E-03 3.7140E-04 1.3567E-04
S7 -2.1149E-01 -2.8076E-02 -1.1323E-03 1.3203E-03 8.0812E-04 2.9935E-04 6.4487E-05
S8 -3.1529E-01 -7.4775E-03 1.4452E-02 7.7806E-03 1.5657E-03 -3.1633E-04 -6.1322E-04
S9 -3.3353E-01 1.6898E-02 -2.4463E-02 2.9311E-03 5.1893E-03 2.4352E-03 5.3763E-04
S10 -4.4565E-01 1.2709E-01 -7.3003E-02 1.7104E-03 6.0358E-03 -3.2311E-03 -1.4988E-03
S11 -1.3793E+00 2.5461E-01 2.9303E-02 -5.1376E-02 5.1985E-03 9.1058E-03 -3.2491E-03
S12 -3.0073E-01 8.9544E-02 4.3954E-02 -3.9663E-02 1.5751E-02 3.0698E-03 -1.2677E-03
S13 -8.5177E-01 6.4305E-01 -3.0417E-01 1.2795E-01 -3.7399E-02 1.2558E-02 -3.5501E-03
S14 -4.5785E+00 9.3922E-01 -3.3372E-01 1.7172E-01 -7.3817E-02 2.7734E-02 -1.7886E-02
TABLE 4-1
Figure BDA0002493824480000112
Figure BDA0002493824480000121
TABLE 4-2
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 image heights. 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 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 positive 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 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 positive power, and has a convex object-side surface S11 and a convex 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 optical imaging lens is 4.93mm, the total length TTL of the optical imaging lens is 5.74mm, a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.79mm, a half Semi-FOV of the maximum angle of view of the optical imaging lens is 43.5 °, 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 1.78.
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). 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 BDA0002493824480000131
TABLE 5
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -4.0042E-03 -8.5854E-03 -3.0835E-03 -6.6762E-04 -3.6964E-05 6.1329E-05 3.9315E-05
S2 -7.5323E-02 -2.2340E-03 3.3599E-03 1.3979E-03 6.0703E-04 2.4003E-04 1.2482E-04
S3 -6.8560E-02 1.2350E-02 2.2696E-03 5.4016E-04 4.3660E-04 1.1027E-04 7.3511E-05
S4 -2.9497E-02 1.8727E-04 -3.8116E-03 -2.7223E-03 -5.4733E-04 -2.1215E-04 1.0758E-04
S5 4.0430E-02 1.3788E-02 5.9855E-03 1.2118E-05 -3.1027E-04 -3.7337E-04 -3.4669E-05
S6 4.2419E-03 8.3915E-03 5.5406E-03 2.4238E-03 9.5629E-04 3.5578E-04 1.3495E-04
S7 -2.1166E-01 -2.6838E-02 -1.0097E-03 1.3969E-03 7.8037E-04 2.8097E-04 6.1433E-05
S8 -3.3020E-01 -5.9049E-03 1.1813E-02 7.6778E-03 1.3747E-03 -1.5758E-04 -5.2561E-04
S9 -3.3645E-01 1.9993E-02 -2.6781E-02 1.4374E-03 3.0200E-03 2.2611E-03 6.3460E-04
S10 -4.2797E-01 1.2443E-01 -7.3463E-02 1.3920E-03 5.8446E-03 -2.7150E-03 -1.5388E-03
S11 -1.3819E+00 2.5786E-01 3.0242E-02 -5.0905E-02 5.6142E-03 8.6629E-03 -3.7438E-03
S12 -2.9909E-01 9.8569E-02 4.3513E-02 -4.1229E-02 1.6799E-02 1.9397E-03 -3.0499E-03
S13 -8.5272E-01 6.4716E-01 -3.0869E-01 1.3206E-01 -3.9034E-02 1.2822E-02 -3.9997E-03
S14 -4.5937E+00 9.4417E-01 -3.4542E-01 1.7549E-01 -7.4178E-02 2.7291E-02 -1.7136E-02
TABLE 6-1
Figure BDA0002493824480000132
Figure BDA0002493824480000141
TABLE 6-2
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 image heights. 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 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 positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave 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 convex 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 optical imaging lens is 4.92mm, the total length TTL of the optical imaging lens is 5.60mm, a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.79mm, a half Semi-FOV of the maximum angle of view of the optical imaging lens is 43.8 °, 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 1.80.
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). 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 BDA0002493824480000151
TABLE 7
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -4.1813E-03 -1.0046E-02 -4.0537E-03 -9.9203E-04 -1.1953E-04 6.3765E-05 5.2451E-05
S2 -7.3632E-02 -2.1513E-03 2.9867E-03 1.5688E-03 5.3717E-04 1.8115E-04 6.6777E-05
S3 -6.9506E-02 1.5549E-02 2.2192E-03 6.9860E-04 2.6246E-04 2.5356E-05 1.2257E-05
S4 -2.7121E-02 3.8394E-03 -3.5605E-03 -2.7892E-03 -1.1539E-03 -2.6500E-04 1.7835E-04
S5 4.9177E-02 1.5706E-02 6.0571E-03 -9.7068E-05 -8.8756E-04 -4.6960E-04 9.9876E-06
S6 4.6884E-03 8.8612E-03 5.2121E-03 2.0451E-03 8.3754E-04 2.8278E-04 1.2217E-04
S7 -2.0002E-01 -2.3439E-02 -6.5557E-04 4.6569E-04 3.9190E-04 8.8462E-05 3.2251E-05
S8 -3.2075E-01 -2.4137E-03 1.3677E-02 6.2488E-03 1.4030E-03 -3.2772E-05 -3.3147E-04
S9 -3.7427E-01 1.7190E-02 -2.6323E-02 3.4280E-03 5.3297E-03 2.8571E-03 8.8558E-04
S10 -4.6576E-01 1.1682E-01 -7.1945E-02 6.1464E-03 3.9460E-03 -3.5861E-03 -8.1770E-04
S11 -1.3951E+00 2.6438E-01 2.8624E-02 -5.3689E-02 7.1487E-03 8.4977E-03 -4.5696E-03
S12 -2.9643E-01 1.0402E-01 4.3935E-02 -4.2442E-02 1.7224E-02 5.2415E-04 -4.2069E-03
S13 -8.4495E-01 6.5177E-01 -3.1308E-01 1.3508E-01 -4.0642E-02 1.3038E-02 -4.7038E-03
S14 -4.5826E+00 9.4005E-01 -3.4258E-01 1.7610E-01 -7.3095E-02 2.6336E-02 -1.6990E-02
TABLE 8-1
Figure BDA0002493824480000152
Figure BDA0002493824480000161
TABLE 8-2
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 image heights. 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 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 positive 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 positive 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 convex 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 optical imaging lens is 4.92mm, the total length TTL of the optical imaging lens is 5.60mm, a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.79mm, a half Semi-FOV of the maximum angle of view of the optical imaging lens is 43.6 °, 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 1.80.
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). 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 BDA0002493824480000171
TABLE 9
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -4.3613E-03 -1.0094E-02 -3.9235E-03 -9.4552E-04 -8.7349E-05 6.5746E-05 4.4819E-05
S2 -7.5896E-02 -3.5604E-03 3.6514E-03 1.6101E-03 3.7314E-04 7.3560E-05 2.9822E-05
S3 -6.6665E-02 1.4944E-02 3.4786E-03 7.9046E-04 1.3948E-04 -4.1515E-06 1.0430E-05
S4 -2.6039E-02 2.8749E-03 -2.4669E-03 -1.7953E-03 -7.3604E-04 -2.2193E-04 3.5452E-05
S5 3.4418E-02 9.8499E-03 4.6180E-03 6.1972E-04 -2.7473E-04 -2.6394E-04 -4.0789E-05
S6 4.9613E-03 6.7535E-03 3.9396E-03 1.7425E-03 6.7872E-04 2.4928E-04 9.4465E-05
S7 -1.9317E-01 -2.4074E-02 -1.8223E-03 4.4605E-04 2.7206E-04 5.1752E-05 -1.9406E-05
S8 -3.1493E-01 -3.0584E-03 1.2079E-02 6.4659E-03 7.4957E-04 -2.7975E-04 -3.0248E-04
S9 -3.5499E-01 2.1703E-02 -2.8815E-02 5.2464E-04 3.1298E-03 2.2869E-03 1.1442E-03
S10 -4.4456E-01 1.1773E-01 -7.4177E-02 5.7956E-03 4.8518E-03 -3.5989E-03 -1.0855E-03
S11 -1.3866E+00 2.6218E-01 3.0089E-02 -5.3912E-02 6.2905E-03 9.0617E-03 -4.3035E-03
S12 -2.9634E-01 9.9264E-02 4.4270E-02 -4.1948E-02 1.6989E-02 1.1712E-03 -3.7909E-03
S13 -8.4626E-01 6.5138E-01 -3.1188E-01 1.3427E-01 -4.0146E-02 1.2933E-02 -4.4956E-03
S14 -4.5787E+00 9.3717E-01 -3.3732E-01 1.7713E-01 -7.1399E-02 2.5472E-02 -1.7270E-02
TABLE 10-1
Figure BDA0002493824480000172
Figure BDA0002493824480000181
TABLE 10-2
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 image heights. 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 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 positive 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 convex 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 optical imaging lens is 4.92mm, the total length TTL of the optical imaging lens is 5.60mm, a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.79mm, a half Semi-FOV of the maximum angle of view of the optical imaging lens is 43.6 °, 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 1.80.
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). 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 BDA0002493824480000191
TABLE 11
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -5.1125E-03 -1.0677E-02 -4.1156E-03 -9.4788E-04 -6.0802E-05 9.1008E-05 5.8688E-05
S2 -7.6578E-02 -3.4272E-03 3.8470E-03 1.9754E-03 6.2378E-04 1.7162E-04 7.5350E-05
S3 -6.6563E-02 1.4954E-02 3.4742E-03 1.1621E-03 3.4121E-04 3.6598E-05 3.1241E-05
S4 -2.7505E-02 2.3434E-03 -3.2895E-03 -2.1078E-03 -7.3664E-04 -2.8090E-04 5.4841E-05
S5 3.3605E-02 1.1258E-02 4.8388E-03 4.2096E-04 -2.9338E-04 -3.6006E-04 -6.0069E-05
S6 5.2602E-03 6.6263E-03 4.3234E-03 1.8639E-03 7.5194E-04 2.7932E-04 1.1069E-04
S7 -1.8732E-01 -2.5255E-02 -1.2685E-03 5.8970E-04 4.3048E-04 1.1690E-04 1.9066E-05
S8 -2.9592E-01 -3.4349E-03 1.3409E-02 5.8950E-03 8.6690E-04 -3.7582E-04 -4.5944E-04
S9 -3.3452E-01 2.1500E-02 -2.9068E-02 -9.7288E-04 3.2199E-03 2.0533E-03 8.9253E-04
S10 -4.3307E-01 1.1741E-01 -7.3148E-02 4.9404E-03 4.7529E-03 -3.4002E-03 -1.0367E-03
S11 -1.3866E+00 2.6201E-01 2.7852E-02 -5.2705E-02 6.0652E-03 8.7938E-03 -4.3473E-03
S12 -2.9658E-01 9.9751E-02 4.4380E-02 -4.2227E-02 1.7061E-02 1.1384E-03 -3.8820E-03
S13 -8.4646E-01 6.5102E-01 -3.1298E-01 1.3503E-01 -4.0538E-02 1.2971E-02 -4.5621E-03
S14 -4.6058E+00 9.4370E-01 -3.4417E-01 1.7890E-01 -7.3110E-02 2.5662E-02 -1.7233E-02
TABLE 12-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 2.2408E-05 -3.3601E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 5.3896E-05 2.4395E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 3.1373E-05 1.2495E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 1.0439E-04 6.2991E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 3.3756E-05 5.0267E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 4.3787E-05 1.4025E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 -1.3061E-05 -2.3609E-06 3.8923E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S8 -2.4901E-04 -4.9461E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S9 4.0596E-04 2.8399E-04 -4.1637E-05 -4.8200E-05 -4.0125E-05 0.0000E+00 0.0000E+00
S10 8.9009E-04 2.1256E-04 -1.9519E-04 1.8775E-04 1.0374E-04 0.0000E+00 0.0000E+00
S11 -3.9448E-03 1.5970E-03 7.3100E-04 -6.6170E-04 -2.0166E-04 1.6581E-04 7.2395E-05
S12 -4.3841E-03 -2.6264E-05 1.6723E-03 8.7410E-04 1.6139E-04 -2.7701E-04 -2.5014E-04
S13 -2.0990E-03 -8.8968E-04 3.1545E-03 -5.4750E-04 -4.1566E-04 1.1210E-04 -9.5272E-05
S14 8.9367E-03 -1.6501E-03 4.3463E-03 -6.6782E-04 8.0209E-04 -6.5440E-04 4.0683E-05
TABLE 12-2
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 image heights. 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.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens includes, in order from an object side to an image side: 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 positive 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 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 convex 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 optical imaging lens is 4.92mm, the total length TTL of the optical imaging lens is 5.60mm, a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.79mm, a half Semi-FOV of the maximum angle of view of the optical imaging lens is 43.6 °, 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 1.80.
Table 13 shows a basic parameter table of the optical imaging lens of embodiment 7, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Tables 14-1, 14-2 show the high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by the formula (1) given in example 1 above.
Figure BDA0002493824480000211
Watch 13
Flour mark A4 A6 A8 A10 A12 A14 A16
S1 -6.0456E-03 -1.1041E-02 -4.2058E-03 -9.7386E-04 -6.1961E-05 8.8165E-05 5.7008E-05
S2 -8.0831E-02 -3.6909E-03 3.8786E-03 1.8361E-03 5.0089E-04 1.1769E-04 5.3939E-05
S3 -6.7896E-02 1.5417E-02 3.4512E-03 1.0051E-03 2.4424E-04 4.1653E-06 2.0270E-05
S4 -2.6563E-02 2.6411E-03 -3.1096E-03 -2.0462E-03 -7.3797E-04 -2.7207E-04 4.7957E-05
S5 3.4118E-02 1.0846E-02 4.9351E-03 5.1500E-04 -2.7328E-04 -3.3904E-04 -5.9048E-05
S6 5.4156E-03 6.7497E-03 4.3007E-03 1.8541E-03 7.4206E-04 2.7277E-04 1.0687E-04
S7 -1.8951E-01 -2.5032E-02 -1.4381E-03 5.4507E-04 3.7303E-04 9.5867E-05 -8.8393E-07
S8 -3.0211E-01 -3.5056E-03 1.3215E-02 5.9022E-03 8.0366E-04 -3.8601E-04 -4.1336E-04
S9 -3.4320E-01 2.2094E-02 -2.8985E-02 -5.5780E-04 3.3186E-03 2.0505E-03 9.6111E-04
S10 -4.4149E-01 1.1825E-01 -7.3759E-02 5.4092E-03 4.7345E-03 -3.4885E-03 -1.0021E-03
S11 -1.3888E+00 2.6166E-01 2.8755E-02 -5.3392E-02 6.1700E-03 8.9969E-03 -4.3288E-03
S12 -2.9582E-01 9.8903E-02 4.4302E-02 -4.2015E-02 1.7022E-02 1.1862E-03 -3.8031E-03
S13 -8.4805E-01 6.5083E-01 -3.1206E-01 1.3423E-01 -4.0192E-02 1.2932E-02 -4.4825E-03
S14 -4.5896E+00 9.4181E-01 -3.4021E-01 1.7831E-01 -7.3368E-02 2.5433E-02 -1.7202E-02
TABLE 14-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 1.9865E-05 -3.0643E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 4.6506E-05 2.2293E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 3.1587E-05 1.3998E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 9.7719E-05 6.0300E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 2.9682E-05 4.8334E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 4.1503E-05 1.3342E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 -1.7848E-05 -7.9156E-06 4.0237E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S8 -2.1365E-04 -3.8353E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S9 3.7940E-04 2.4907E-04 -7.3345E-05 -5.9578E-05 -5.0131E-05 0.0000E+00 0.0000E+00
S10 8.8525E-04 1.9398E-04 -1.9504E-04 1.9164E-04 9.9713E-05 0.0000E+00 0.0000E+00
S11 -4.0218E-03 1.5917E-03 7.4203E-04 -6.8023E-04 -2.1331E-04 1.6588E-04 6.7207E-05
S12 -4.3921E-03 -8.8667E-05 1.6317E-03 8.6056E-04 1.7240E-04 -2.5668E-04 -2.5180E-04
S13 -2.1199E-03 -9.7890E-04 3.1279E-03 -5.0893E-04 -4.0562E-04 1.1399E-04 -9.1413E-05
S14 8.8853E-03 -1.5996E-03 4.3222E-03 -6.7996E-04 7.7359E-04 -6.4287E-04 4.8229E-05
TABLE 14-2
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. Fig. 14D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens includes, in order from an object side to an image side: 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 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 concave 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 concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex 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 optical imaging lens is 4.92mm, the total length TTL of the optical imaging lens is 5.60mm, a half ImgH of the diagonal length of the effective pixel area on the imaging plane S17 of the optical imaging lens is 4.79mm, a half Semi-FOV of the maximum angle of view of the optical imaging lens is 43.7 °, 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 1.80.
Table 15 shows a basic parameter table of the optical imaging lens of embodiment 8, in which the units of the radius of curvature, the thickness/distance, and the focal length are all millimeters (mm). Tables 16-1, 16-2 show the high-order term coefficients that can be used for each aspherical mirror surface in example 8, wherein each aspherical mirror surface type can be defined by the formula (1) given in example 1 above.
Figure BDA0002493824480000231
Watch 15
Figure BDA0002493824480000232
Figure BDA0002493824480000241
TABLE 16-1
Flour mark A18 A20 A22 A24 A26 A28 A30
S1 1.6048E-05 -3.2766E-06 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S2 4.2886E-05 2.0089E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S3 2.4899E-05 1.1447E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S4 1.1744E-04 6.9726E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S5 3.2211E-05 5.5823E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S6 4.6709E-05 1.0630E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 -3.2043E-05 -2.5208E-05 3.9525E-08 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S8 -1.8386E-04 -2.1396E-05 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S9 1.2385E-04 -3.6762E-05 -2.5269E-04 -1.4558E-04 -5.7233E-05 0.0000E+00 0.0000E+00
S10 8.5823E-04 3.0987E-04 -1.0154E-04 1.7942E-04 1.0275E-04 0.0000E+00 0.0000E+00
S11 -4.2654E-03 1.8373E-03 7.2292E-04 -7.7158E-04 -1.9361E-04 1.9999E-04 5.5086E-05
S12 -4.5370E-03 -1.0625E-04 1.5761E-03 8.5975E-04 2.1198E-04 -2.4563E-04 -2.7298E-04
S13 -2.0881E-03 -1.0926E-03 3.0952E-03 -4.8755E-04 -4.0899E-04 1.4567E-04 -1.0498E-04
S14 8.9710E-03 -1.7490E-03 4.1804E-03 -7.6296E-04 7.5044E-04 -6.1720E-04 6.8477E-05
TABLE 16-2
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.
In summary, examples 1 to 8 each satisfy the relationship shown in table 17.
Figure BDA0002493824480000242
Figure BDA0002493824480000251
TABLE 17
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 (37)

1. The optical imaging lens assembly, in order from an object side to an image side along an optical axis, comprises: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having a focal power;
the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length ImgH of the effective pixel area of the optical imaging lens meet the following conditions: TTL/ImgH is less than or equal to 1.2;
the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD is less than or equal to 1.8; and
the total effective focal length f of the optical imaging lens and half of the Semi-FOV of the maximum field angle of the optical imaging lens meet the following conditions: f × tan (Semi-FOV) > 4.6 mm.
2. The optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens, the radius of curvature R1 of the object side surface of the first lens, and the radius of curvature R2 of the image side surface of the first lens satisfy: f1/(R1+ R2) < 1.3 < 0.8.
3. 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: -1.0 < (R3+ R4)/f2 < -0.5.
4. The optical imaging lens of claim 1, wherein the effective focal length f3 of the third lens and the radius of curvature R5 of the object side of the third lens satisfy: r5/f3 is more than 0.3 and less than 0.8.
5. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the combined focal length f123 of the first lens, the second lens and the third lens satisfy: f/f123 is more than 0.8 and less than 1.3.
6. The optical imaging lens of claim 1, wherein an effective focal length f6 of the sixth lens, an effective focal length f7 of the seventh lens, and a combined focal length f67 of the sixth lens and the seventh lens satisfy: 0.5 < (f7-f6)/f67 < 1.0.
7. The optical imaging lens of claim 1, wherein the radius of curvature R11 of the object-side surface of the sixth lens, the radius of curvature R12 of the image-side surface of the sixth 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: 0.7 < (R13+ R14)/(R11+ R12) < 1.2.
8. The optical imaging lens of claim 1, wherein a distance SAG71 on the optical axis from an intersection point of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens to a distance SAG72 on the optical axis from an intersection point of an image-side surface of the seventh lens and the optical axis to an effective radius vertex of the image-side surface of the seventh lens satisfies: 0.5 < SAG72/SAG71 < 1.0.
9. The optical imaging lens of claim 1, wherein a distance SAG41 on the optical axis from an intersection point of an object-side surface of the fourth lens and the optical axis to an effective radius vertex of an object-side surface of the fourth lens, 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 an image-side surface of the fourth lens, and a distance SAG62 on the optical axis from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of an image-side surface of the sixth lens satisfy: 0.7 < (SAG41+ SAG42)/SAG62 < 1.2.
10. The optical imaging lens of claim 1, wherein the edge thickness ET2 of the second lens and the edge thickness ET7 of the seventh lens satisfy: 0.3 < ET2/ET7 < 0.8.
11. The optical imaging lens of claim 1, wherein the edge thickness ET5 of the fifth lens and the edge thickness ET6 of the sixth lens satisfy: 0.5 < ET5/ET6 < 1.0.
12. 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 CT3 of the third lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and a center thickness CT7 of the seventh lens on the optical axis satisfy: 0.8 < (CT1+ CT2+ CT3)/(CT5+ CT6+ CT7) < 1.3.
13. The optical imaging lens of claim 1, wherein a center thickness CT4 of the fourth lens on the optical axis and a separation distance T34 of the third lens and the fourth lens on the optical axis satisfy: 0.7 < CT4/T34 < 1.2.
14. The optical imaging lens of any one of claims 1 to 13, wherein the first lens element has a positive optical power, and has a convex object-side surface and a concave image-side surface.
15. The optical imaging lens of any one of claims 1 to 13, wherein the second lens element has a negative optical power, and has a convex object-side surface and a concave image-side surface.
16. The optical imaging lens of any of claims 1-13, wherein the object side surface of the third lens is convex.
17. The optical imaging lens of any one of claims 1 to 13, wherein the sixth lens element has positive optical power and has a convex object-side surface.
18. The optical imaging lens of any one of claims 1 to 13, wherein the seventh lens element has a negative optical power, and wherein the object side surface is concave and the image side surface is concave.
19. The optical 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 having a positive optical power;
a fourth lens having an optical power;
fifth lens having optical power
A sixth lens having a refractive power, an image-side surface of which is convex; and
a seventh lens having optical power;
the distance TTL from the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length ImgH of the effective pixel area of the optical imaging lens meet the following conditions: TTL/ImgH is less than or equal to 1.2; and
the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy: f/EPD is less than or equal to 1.8.
20. The optical imaging lens of claim 19, wherein the total effective focal length f of the optical imaging lens and half of the Semi-FOV of the maximum field angle of the optical imaging lens satisfy: f × tan (Semi-FOV) > 4.6 mm.
21. The optical imaging lens of claim 19, wherein the effective focal length f6 of the sixth lens, the effective focal length f7 of the seventh lens, and the combined focal length f67 of the sixth lens and the seventh lens satisfy: 0.5 < (f7-f6)/f67 < 1.0.
22. The optical imaging lens of claim 19, wherein the total effective focal length f of the optical imaging lens and the combined focal length f123 of the first lens, the second lens and the third lens satisfy: f/f123 is more than 0.8 and less than 1.3.
23. The optical imaging lens of claim 19, wherein the effective focal length f1 of the first lens, the radius of curvature R1 of the object side surface of the first lens, and the radius of curvature R2 of the image side surface of the first lens satisfy: f1/(R1+ R2) < 1.3 < 0.8.
24. The optical imaging lens of claim 19, 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: -1.0 < (R3+ R4)/f2 < -0.5.
25. The optical imaging lens of claim 19, wherein the effective focal length f3 of the third lens and the radius of curvature R5 of the object side of the third lens satisfy: r5/f3 is more than 0.3 and less than 0.8.
26. The optical imaging lens of claim 19, wherein the radius of curvature R11 of the object-side surface of the sixth lens, the radius of curvature R12 of the image-side surface of the sixth 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: 0.7 < (R13+ R14)/(R11+ R12) < 1.2.
27. The optical imaging lens of claim 19, wherein a distance SAG71 on the optical axis from an intersection point of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens to a distance SAG72 on the optical axis from an intersection point of an image-side surface of the seventh lens and the optical axis to an effective radius vertex of the image-side surface of the seventh lens satisfies: 0.5 < SAG72/SAG71 < 1.0.
28. The optical imaging lens of claim 19, wherein a distance SAG41 on the optical axis from an intersection point of an object-side surface of the fourth lens and the optical axis to an effective radius vertex of an object-side surface of the fourth lens, 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 an image-side surface of the fourth lens, and a distance SAG62 on the optical axis from an intersection point of an image-side surface of the sixth lens and the optical axis to an effective radius vertex of an image-side surface of the sixth lens satisfy: 0.7 < (SAG41+ SAG42)/SAG62 < 1.2.
29. The optical imaging lens of claim 19, wherein the edge thickness ET2 of the second lens and the edge thickness ET7 of the seventh lens satisfy: 0.3 < ET2/ET7 < 0.8.
30. The optical imaging lens of claim 19, wherein the edge thickness ET5 of the fifth lens and the edge thickness ET6 of the sixth lens satisfy: 0.5 < ET5/ET6 < 1.0.
31. The optical imaging lens of claim 19, 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 CT3 of the third lens on the optical axis, a center thickness CT5 of the fifth lens on the optical axis, a center thickness CT6 of the sixth lens on the optical axis, and a center thickness CT7 of the seventh lens on the optical axis satisfy: 0.8 < (CT1+ CT2+ CT3)/(CT5+ CT6+ CT7) < 1.3.
32. The optical imaging lens of claim 19, wherein the central thickness CT4 of the fourth lens on the optical axis is separated from the third and fourth lenses by a distance T34 on the optical axis such that: 0.7 < CT4/T34 < 1.2.
33. The optical imaging lens of any one of claims 19-32, wherein the first lens element has a positive optical power and has a convex object-side surface and a concave image-side surface.
34. The optical imaging lens of any one of claims 19-32 wherein the second lens element has a negative optical power and has a convex object-side surface and a concave image-side surface.
35. The optical imaging lens of any of claims 19-32, wherein the object side surface of the third lens is convex.
36. The optical imaging lens of any one of claims 19-32 wherein the sixth lens element has positive optical power and its object side surface is convex.
37. The optical imaging lens of any one of claims 19-32, wherein the seventh lens element has a negative optical power and has a concave object-side surface and a concave image-side surface.
CN202020810730.9U 2020-05-15 2020-05-15 Optical imaging lens Active CN212181144U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114296224A (en) * 2022-03-09 2022-04-08 江西联益光学有限公司 Optical lens
CN115220196A (en) * 2021-08-09 2022-10-21 三星电机株式会社 Optical imaging system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115220196A (en) * 2021-08-09 2022-10-21 三星电机株式会社 Optical imaging system
CN114296224A (en) * 2022-03-09 2022-04-08 江西联益光学有限公司 Optical lens
CN114296224B (en) * 2022-03-09 2022-09-13 江西联益光学有限公司 Optical lens

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