CN109491047B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN109491047B
CN109491047B CN201811496562.4A CN201811496562A CN109491047B CN 109491047 B CN109491047 B CN 109491047B CN 201811496562 A CN201811496562 A CN 201811496562A CN 109491047 B CN109491047 B CN 109491047B
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lens
optical imaging
imaging lens
optical
image
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CN109491047A (en
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徐标
张凯元
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN202110766197.XA priority Critical patent/CN113433663B/en
Priority to CN201811496562.4A priority patent/CN109491047B/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lenses (AREA)

Abstract

The application discloses optical imaging lens, this camera lens includes in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens has positive focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface; the second lens has negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface; the object side surface of the third lens is a convex surface; the seventh lens has negative focal power, the object side surface is a concave surface, and the image side surface is a concave surface. The distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, the aperture value FNo of the optical imaging lens and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens satisfy TTL multiplied by FNo/ImgH < 2.1.

Description

Optical imaging lens
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including seven lenses.
Background
Along with the increasing popularity of electronic products such as smart phones and tablet computers, the trend of thinning electronic products is increasing, and the imaging lens carried on the electronic products is also required to be ultra-thin. At the same time, as the performance of CCD and CMOS image sensors increases and the size decreases, the corresponding imaging lens is also required to have high-quality imaging performance.
In order to pursue better photographing experience, for example, clear photographing can be realized in a dark and weak light environment, and the optical imaging lens also needs to have the characteristic of large aperture. However, the large aperture lens tends to have a larger lens diameter and a larger total lens length due to an excessively large aperture. Therefore, how to ensure the characteristic of large aperture and simultaneously make the optical imaging lens meet the ultrathin application requirements of electronic products such as ultrathin mobile phones as far as possible is a problem to be solved urgently.
Disclosure of Invention
The present application provides an optical imaging lens, e.g., a large aperture lens, applicable to portable electronic products that may at least address or partially address at least one of the above-mentioned shortcomings of the prior art.
In one aspect, the present application provides an optical imaging lens sequentially including, 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 optical power. The first lens element may have positive refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the object side surface of the third lens can be a convex surface; the seventh lens element may have negative refractive power, wherein the object-side surface thereof may be concave, and wherein the image-side surface thereof may be concave. The distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis, the aperture value FNo of the optical imaging lens and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can meet the condition that TTL multiplied by FNo/ImgH is less than 2.1.
In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy f/EPD < 1.6.
In one embodiment, the distance Td between the object side surface of the first lens element and the image side surface of the seventh lens element on the optical axis and the entrance pupil diameter EPD of the optical imaging lens can satisfy Td/EPD < 1.7.
In one embodiment, a distance TTL between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis and a half of a diagonal length ImgH of an effective pixel area on the imaging surface of the optical imaging lens may satisfy TTL/ImgH < 1.4.
In one embodiment, the distance T45 between the fourth lens and the fifth lens on the optical axis, the total effective focal length f of the optical imaging lens and the maximum half field angle HFOV of the optical imaging lens may satisfy 0.9mm 2 ＜T45×f×tan(HFOV)＜2mm 2 。
In one embodiment, the radius of curvature R14 of the image side of the seventh lens and the radius of curvature R13 of the object side of the seventh lens may satisfy 0.4 < (R14+R13)/(R14-R13) < 0.9.
In one embodiment, the radius of curvature R13 of the object-side surface of the seventh lens and the effective focal length f7 of the seventh lens may satisfy 0.5 < R13/f7 < 0.8.
In one embodiment, the effective focal length f7 of the seventh lens and the total effective focal length f of the optical imaging lens may satisfy-0.8 < f7/f < -0.5.
In one embodiment, the distance SAG71 on the optical axis from the intersection of the object side surface of the seventh lens and the optical axis to the vertex of the effective radius of the object side surface of the seventh lens and the center thickness CT7 of the seventh lens on the optical axis may satisfy-4 < SAG71/CT7 < -2.
In one embodiment, the central thickness CT6 of the sixth lens element on the optical axis, the central thickness CT5 of the fifth lens element on the optical axis and the central thickness CT7 of the seventh lens element on the optical axis may satisfy 0.7 < CT 6/(CT 5+ CT 7) < 1.
In one embodiment, the radius of curvature R13 of the object-side surface of the seventh lens element and the total effective focal length f of the optical imaging lens element may satisfy-2.6 < f/R13 < -2.
In one embodiment, the separation distance T67 of the sixth lens and the seventh lens on the optical axis and the separation distance T12 of the first lens and the second lens on the optical axis can satisfy 10 < T67/T12 < 26.
In one embodiment, the center thickness CT1 of the first lens on the optical axis and the distance T12 between the first lens and the second lens on the optical axis can satisfy 12 < CT1/T12 < 28.
In one embodiment, the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens may satisfy 0.9 < f1/f < 1.2.
In one embodiment, the radius of curvature R1 of the object side of the first lens, the radius of curvature R2 of the image side of the first lens, the radius of curvature R3 of the object side of the second lens, the radius of curvature R4 of the image side of the second lens and the total effective focal length f of the optical imaging lens may satisfy 6.6 < f/r1+f/r2+f/r3+f/R4 < 7.3.
In one embodiment, the maximum value SD_max of the maximum effective diameter of each of the object-side surface of the first lens to the image-side surface of the seventh lens and the minimum value SD_min of the maximum effective diameter of each of the object-side surface of the first lens to the image-side surface of the seventh lens may satisfy 2.7.ltoreq.SD_max/SD_min < 3.
In one embodiment, the sum Σct of the center thicknesses of the first lens element to the seventh lens element on the optical axis and the sum Σt of the distances between any two adjacent lens elements of the first lens element to the seventh lens element on the optical axis may satisfy 1.5 < Σct/Σt.ltoreq.2.5.
In one embodiment, the effective focal length f7 of the seventh lens and the effective focal length fi of the i-th lens in the optical imaging lens satisfy |f7|/|fi| < 1, where i=1, 2,3,4,5, or 6.
In another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens element may have positive refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the object side surface of the third lens can be a convex surface; the seventh lens element may have negative refractive power, wherein the object-side surface thereof may be concave, and wherein the image-side surface thereof may be concave. The curvature radius R13 of the object side surface of the seventh lens and the effective focal length f7 of the seventh lens can satisfy 0.5 < R13/f7 < 0.8.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens element may have positive refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the object side surface of the third lens can be a convex surface; the seventh lens element may have negative refractive power, wherein the object-side surface thereof may be concave, and wherein the image-side surface thereof may be concave. The distance TTL between the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and half of the diagonal length of the effective pixel area on the imaging surface of the optical imaging lens can meet the condition that TTL/ImgH is smaller than 1.4.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens element may have positive refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the object side surface of the third lens can be a convex surface; the seventh lens element may have negative refractive power, wherein the object-side surface thereof may be concave, and wherein the image-side surface thereof may be concave. The radius of curvature R14 of the image side of the seventh lens and the radius of curvature R13 of the object side of the seventh lens may satisfy 0.4 < (R14+R13)/(R14-R13) < 0.9.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens element may have positive refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the object side surface of the third lens can be a convex surface; the seventh lens element may have negative refractive power, wherein the object-side surface thereof may be concave, and wherein the image-side surface thereof may be concave. The distance SAG71 between the intersection point of the object side surface of the seventh lens and the optical axis and the vertex of the effective radius of the object side surface of the seventh lens on the optical axis and the central thickness CT7 of the seventh lens on the optical axis can satisfy-4 < SAG71/CT7 < -2.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens element may have positive refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the object side surface of the third lens can be a convex surface; the seventh lens element may have negative refractive power, wherein the object-side surface thereof may be concave, and wherein the image-side surface thereof may be concave. The curvature radius R13 of the object side surface of the seventh lens and the total effective focal length f of the optical imaging lens can meet the condition that f/R13 is less than-2.6.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens element may have positive refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the object side surface of the third lens can be a convex surface; the seventh lens element may have negative refractive power, wherein the object-side surface thereof may be concave, and wherein the image-side surface thereof may be concave. The radius of curvature R1 of the object side of the first lens element, the radius of curvature R2 of the image side of the first lens element, the radius of curvature R3 of the object side of the second lens element, the radius of curvature R4 of the image side of the second lens element and the total effective focal length f of the optical imaging lens assembly may satisfy 6.6 < f/r1+f/r2+f/r3+f/R4 < 7.3.
In still another aspect, the present application further provides an optical imaging lens, including, in order from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens having optical power. The first lens element may have positive refractive power, wherein an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the object side surface of the third lens can be a convex surface; the seventh lens element may have negative refractive power, wherein the object-side surface thereof may be concave, and wherein the image-side surface thereof may be concave. The maximum value sd_max of the maximum effective diameter of each of the object-side surface of the first lens element to the image-side surface of the seventh lens element and the minimum value sd_min of the maximum effective diameter of each of the object-side surface of the first lens element to the image-side surface of the seventh lens element may satisfy 2.7+.ltoreq.sd_max/sd_min < 3.
Seven lenses are adopted, and the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like of each lens are reasonably distributed, so that the optical imaging lens has at least one beneficial effect of large aperture, ultra-thin performance, high imaging quality and the like.
Drawings
Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments, taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 1, respectively;
fig. 3 shows a schematic structural view of an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 2, respectively;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 3, respectively;
fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application;
Fig. 8A to 8C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 4, respectively;
fig. 9 shows a schematic structural view of an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 5, respectively;
fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 6, respectively;
fig. 13 shows a schematic structural view of an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 7, respectively;
fig. 15 shows a schematic structural view of an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 8, respectively;
fig. 17 shows a schematic structural diagram of an optical imaging lens according to embodiment 9 of the present application;
fig. 18A to 18C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 9, respectively;
Fig. 19 shows a schematic structural view of an optical imaging lens according to embodiment 10 of the present application;
fig. 20A to 20C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 10, respectively;
fig. 21 shows a schematic structural view of an optical imaging lens according to embodiment 11 of the present application;
fig. 22A to 22C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 11, respectively;
fig. 23 shows a schematic structural view of an optical imaging lens according to embodiment 12 of the present application;
fig. 24A to 24C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 12, respectively;
fig. 25 shows a schematic structural view of an optical imaging lens according to embodiment 13 of the present application;
fig. 26A to 26C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 13, respectively;
fig. 27 shows a schematic structural diagram of an optical imaging lens according to embodiment 14 of the present application;
fig. 28A to 28C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 14, respectively;
fig. 29 shows a schematic structural view of an optical imaging lens according to embodiment 15 of the present application;
Fig. 30A to 30C show an on-axis chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 15, respectively.
Detailed Description
For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed description are merely illustrative of exemplary embodiments of the application and are not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the subject is referred to as the object side of the lens, and the surface of each lens closest to the imaging plane is referred to as the image side of the lens.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, use of "may" means "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, seven lenses having optical power, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. In the first lens to the seventh lens, any adjacent two lenses may have an air space therebetween.
In an exemplary embodiment, the first lens may have positive optical power, an object-side surface thereof may be convex, and an image-side surface thereof may be concave; the second lens element with negative refractive power may have a convex object-side surface and a concave image-side surface; the third lens has positive focal power or negative focal power, and the object side surface of the third lens can be a convex surface; the fourth lens has positive focal power or negative focal power; the fifth lens has positive optical power or negative optical power; the sixth lens has positive optical power or negative optical power; and the seventh lens element may have negative optical power, wherein the object-side surface thereof may be concave and the image-side surface thereof may be concave. The optical power and the surface shape of the first lens and the second lens are reasonably controlled, so that the aberration of the on-axis view field of the system is reduced, and the system has good imaging performance in the on-axis view field area. The surface types of the third lens and the seventh lens are reasonably controlled, so that the matching of the system chief ray and the image surface is facilitated.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a condition that ttl×fno/ImgH < 2.1, where TTL is a distance between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis, fno is an aperture value of the optical imaging lens, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens. More specifically, TTL, FNO and ImgH can further satisfy 1.8 < TTL×FNO/ImgH < 2.1, e.g., 1.93. Ltoreq.TTL×FNO/ImgH.ltoreq.2.01. The ratio of the total length of the system to the product of the relative aperture to the image height is reasonably constrained by satisfying the condition that TTL multiplied by Fno/ImgH is less than 2.1, so that the optical imaging lens has the characteristics of ultra-thin and large aperture.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that f/EPD < 1.6, where f is the total effective focal length of the optical imaging lens and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD may further satisfy 1.4 < f/EPD < 1.6, e.g., 1.47.ltoreq.f/EPD.ltoreq.1.52. By controlling the ratio of the total effective focal length to the entrance pupil diameter of the optical imaging lens, the system can realize the advantage of large aperture, and is beneficial to clear imaging of the lens in dark and weak light environments.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that TTL/ImgH < 1.4, where TTL is a distance between an object side surface of the first lens and an imaging surface of the optical imaging lens on an optical axis, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens. More specifically, TTL and ImgH can further satisfy 1.3 < TTL/ImgH < 1.4, e.g., 1.31. Ltoreq.TTL/ImgH. Ltoreq.1.33. The system has the characteristic of ultra-thin by restraining the ratio of the total length to the image height of the optical imaging lens.
In the exampleIn an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional 0.9mm 2 ＜T45×f×tan(HFOV)＜2mm 2 Where T45 is the distance between the fourth lens and the fifth lens on the optical axis, f is the total effective focal length of the optical imaging lens, and HFOV is the maximum half field angle of the optical imaging lens. More specifically, T45, f and HFOV may further satisfy 0.97mm 2 ≤T45×f×tan(HFOV)≤1.99mm 2 . Through optimizing the interval distance between the fourth lens and the fifth lens on the optical axis and limiting the image height, the good matching between the imaging system and the large-image-plane chip can be ensured, so that the imaging system has the characteristics of high pixels, low sensitivity and easiness in processing.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.7+.sd_max/sd_min < 3, where sd_max is a maximum value of the maximum effective diameter of each of the object-side surface of the first lens to the image-side surface of the seventh lens, and sd_min is a minimum value of the maximum effective diameter of each of the object-side surface of the first lens to the image-side surface of the seventh lens. More specifically, SD_max and SD_min may further satisfy 2.70. Ltoreq.SD_max/SD_min. Ltoreq.2.96. The lens size can be effectively controlled by reasonably controlling the effective diameter parameters of each lens of the lens, and the effect of miniaturization is realized.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.4 < (r14+r13)/(R14-R13) < 0.9, where R14 is a radius of curvature of an image side surface of the seventh lens and R13 is a radius of curvature of an object side surface of the seventh lens. More specifically, R14 and R13 may further satisfy 0.48.ltoreq.R14+R13)/(R14-R13). Ltoreq.0.84. By restricting the ratio of the sum of the curvature radiuses of the object side surface of the seventh lens and the image side surface of the seventh lens to a certain range, the deflection angle of the incident light ray on the seventh lens can be reduced, the distribution of the light beam on the curved surface can be reasonably adjusted, and the sensitivity of the seventh lens can be reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 10 < T67/T12 < 26, where T67 is a separation distance of the sixth lens and the seventh lens on the optical axis, and T12 is a separation distance of the first lens and the second lens on the optical axis. More specifically, T67 and T12 may further satisfy 10.05.ltoreq.T67/T12.ltoreq.25.57. By restricting the ratio of T67 to T12, the curvature of field generated by the front lens and the curvature of field generated by the back lens of the system can be balanced, so that the total curvature of field of the system is controlled within a reasonable range.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition that Σct/Σt is less than or equal to 2.5, where Σct is a sum of thicknesses of centers of the first lens element to the seventh lens element on the optical axis, respectively, and Σt is a sum of distances between any adjacent two lens elements of the first lens element to the seventh lens element on the optical axis. More specifically, sigma CT and Sigma T can further satisfy Sigma CT/Sigma T of 1.53.ltoreq.Sigma CT/Sigma T.ltoreq.2.50. By reasonably controlling the sum of the thicknesses of the centers of the lenses of the optical imaging lens, the distortion range of the system can be reasonably controlled, so that the system has smaller distortion.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5 < R13/f7 < 0.8, where R13 is a radius of curvature of an object side surface of the seventh lens element, and f7 is an effective focal length of the seventh lens element. More specifically, R13 and f7 may further satisfy 0.59.ltoreq.R13/f7.ltoreq.0.74. The curvature radius of the object side surface of the seventh lens is controlled to be in a reasonable range with the effective focal length ratio of the seventh lens, and the curvature of field of the object side surface of the seventh lens can be effectively balanced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 12 < CT1/T12 < 28, where CT1 is a center thickness of the first lens on the optical axis, and T12 is a separation distance of the first lens and the second lens on the optical axis. More specifically, CT1 and T12 may further satisfy 12.95.ltoreq.CT 1/T12.ltoreq.27.78. By reasonably controlling the ratio of CT1 to T12, the distortion contribution of each view field of the system can be controlled within a reasonable range, and the imaging quality is further improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.9 < f1/f < 1.2, where f1 is an effective focal length of the first lens and f is a total effective focal length of the optical imaging lens. More specifically, f1 and f may further satisfy 0.97.ltoreq.f1/f.ltoreq.1.14. By controlling the effective focal length of the first lens, the advanced spherical aberration contribution of the first lens can be reasonably controlled, so that the advanced spherical aberration generated by the rear end lens can be reasonably balanced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-0.8 < f7/f < -0.5, where f7 is an effective focal length of the seventh lens and f is a total effective focal length of the optical imaging lens. More specifically, f7 and f may further satisfy-0.71.ltoreq.f7/f.ltoreq.0.55. By reasonably controlling the effective focal length of the seventh lens, the seventh lens can generate positive astigmatism and can be balanced with negative astigmatism generated by other lenses of the system, so that the system has good imaging quality.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition-4 < SAG71/CT7 < -2, where SAG71 is a distance between an intersection point of an object side surface of the seventh lens and an optical axis and an effective radius vertex of the object side surface of the seventh lens on the optical axis, and CT7 is a center thickness of the seventh lens on the optical axis. More specifically, SAG71 and CT7 can further satisfy-3.88.ltoreq.SAG 71/CT 7.ltoreq.2.18. Meets the condition that SAG71/CT7 < -2, can effectively reduce the incidence angle of the principal ray on the object side surface of the seventh lens, and can improve the matching degree of the lens and the chip.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression |f7|/|fi| < 1, where f7 is an effective focal length of the seventh lens, and fi is an effective focal length of the i-th lens (where i=1, 2,3,4,5, or 6). By controlling the ratio of the effective focal length of the seventh lens to the effective focal length of the other lenses, the high-order aberration generated by the front lens of the system can be effectively balanced, so that the system has good imaging performance.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.7 < CT 6/(CT 5+ct 7) < 1, where CT6 is a center thickness of the sixth lens element on the optical axis, CT5 is a center thickness of the fifth lens element on the optical axis, and CT7 is a center thickness of the seventh lens element on the optical axis. More specifically, CT6, CT5 and CT7 may further satisfy 0.79.ltoreq.CT6/(CT5+CT7). Ltoreq.0.99. By restricting the ratio of the center thickness of the sixth lens to the sum of the center thicknesses of the fifth lens and the seventh lens, the coma aberration performance of the system can be reasonably controlled, so that the optical system has good optical performance.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the condition-2.6 < f/R13 < -2, where R13 is a radius of curvature of an object side surface of the seventh lens element, and f is a total effective focal length of the optical imaging lens element. More specifically, f and R13 may further satisfy-2.53.ltoreq.f/R13.ltoreq.2.08. By controlling the ratio of the total effective focal length of the system to the curvature radius of the object side surface of the seventh lens, the field curvature contribution of the object side surface of the seventh lens is in a reasonable range, and the field curvature generated by the front-end lens can be effectively balanced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 6.6 < f/r1+f/r2+f/r3+f/R4 < 7.3, where R1 is a radius of curvature of an object side surface of the first lens, R2 is a radius of curvature of an image side surface of the first lens, R3 is a radius of curvature of an object side surface of the second lens, R4 is a radius of curvature of an image side surface of the second lens, and f is a total effective focal length of the optical imaging lens. More specifically, f, R1, R2, R3 and R4 may further satisfy 6.64.ltoreq.f/R1+f/R2+f/R3+f/R4.ltoreq.7.24. By controlling the ratio of the curvature radius of each curved surface of the first lens and the second lens to the effective focal length of the system, the first lens and the second lens can share reasonable focal power, and the spherical aberration of the system can be easily corrected.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression Td/EPD < 1.7, where Td is a distance between an object side surface of the first lens element and an image side surface of the seventh lens element on an optical axis, and EPD is an entrance pupil diameter of the optical imaging lens element. More specifically, td and EPD may further satisfy 1.5 < Td/EPD < 1.7, such as 1.57. Ltoreq.Td/EPD.ltoreq.1.68. By reasonably setting the position of the diaphragm, the coma, astigmatism, distortion, axial chromatic aberration and other aberrations related to the diaphragm can be effectively corrected, so that the system has good imaging quality.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm to improve imaging quality of the lens. Alternatively, a diaphragm may be provided 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 located on the imaging surface.
The optical imaging lens according to the above-described embodiments of the present application may employ a plurality of lenses, such as seven lenses described above. By reasonably distributing the focal power, the surface shape, the center thickness of each lens, the axial spacing between each lens and the like, the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. The optical imaging lens with the configuration can also have the beneficial effects of large aperture, ultra-thin performance, high imaging quality and the like.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror, i.e., at least one of the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens, and the seventh lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality. Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are aspherical mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens may be varied to achieve the various results and advantages described in the specification without departing from the technical solutions claimed herein. For example, although seven lenses are described as an example 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 the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2C. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. 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 the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 1, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 1
As can be seen from table 1, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspheric. In the present embodiment, the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S1-S14 in example 1 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 、A 20 And A 22 。
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -2.74E-03 1.34E-02 -3.91E-02 6.01E-02 -5.66E-02 3.21E-02 -1.07E-02 1.88E-03 -1.32E-04
S2 3.59E-02 -1.33E-02 -6.02E-02 1.02E-01 -8.21E-02 3.55E-02 -7.83E-03 6.13E-04 2.55E-05
S3 -2.88E-02 3.20E-02 -1.11E-01 1.35E-01 -7.68E-02 1.30E-02 7.43E-03 -3.95E-03 5.49E-04
S4 -6.92E-02 7.80E-02 -1.27E-01 1.13E-01 -2.02E-02 -5.42E-02 5.16E-02 -1.93E-02 2.71E-03
S5 6.88E-03 -1.67E-03 8.67E-02 -2.29E-01 3.35E-01 -2.87E-01 1.45E-01 -4.00E-02 4.64E-03
S6 -1.32E-03 -1.46E-02 1.49E-01 -5.00E-01 9.67E-01 -1.12E+00 7.71E-01 -2.92E-01 4.73E-02
S7 -3.96E-02 -9.68E-02 2.83E-01 -5.57E-01 6.41E-01 -4.33E-01 1.57E-01 -2.22E-02 -5.12E-04
S8 -5.78E-02 -4.91E-02 1.62E-01 -2.79E-01 2.67E-01 -1.51E-01 4.88E-02 -7.90E-03 4.39E-04
S9 -4.30E-02 -6.50E-02 1.55E-01 -1.45E-01 5.97E-02 -4.93E-03 -4.84E-03 1.69E-03 -1.69E-04
S10 3.54E-02 -2.30E-01 3.30E-01 -2.65E-01 1.30E-01 -4.04E-02 7.70E-03 -8.23E-04 3.76E-05
S11 4.80E-02 -6.65E-02 -4.68E-03 3.28E-02 -2.22E-02 7.59E-03 -1.43E-03 1.40E-04 -5.60E-06
S12 8.62E-02 7.68E-03 -6.99E-02 5.22E-02 -2.04E-02 4.70E-03 -6.40E-04 4.73E-05 -1.45E-06
S13 -7.97E-03 7.07E-02 -5.86E-02 2.30E-02 -5.08E-03 6.70E-04 -5.25E-05 2.26E-06 -4.10E-08
S14 -5.32E-02 3.05E-02 -9.89E-03 6.73E-04 3.76E-04 -1.07E-04 1.22E-05 -6.62E-07 1.42E-08
TABLE 2
Table 3 shows the effective focal lengths f1 to f7 of the respective lenses in embodiment 1, the total effective focal length f of the optical imaging lens, the total optical length TTL (i.e., the distance on the optical axis from the object side surface S1 to the imaging surface S17 of the first lens E1), half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, the maximum half field angle HFOV, and the f-number Fno.
f1(mm) 4.84 f7(mm) -2.82
f2(mm) -8.60 f(mm) 4.69
f3(mm) 8.61 TTL(mm) 5.45
f4(mm) -46.33 ImgH(mm) 4.15
f5(mm) -36.84 HFOV(°) 41.2
f6(mm) 5.23 Fno 1.49
TABLE 3 Table 3
The optical imaging lens in embodiment 1 satisfies:
ttl×fno/imgh=1.96, where TTL is the distance between the object side surface S1 of the first lens E1 and the imaging surface S17 on the optical axis, fno is the aperture value of the optical imaging lens, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S17;
f/EPD = 1.49, where f is the total effective focal length of the optical imaging lens, EPD is the entrance pupil diameter of the optical imaging lens;
TTL/imgh=1.31, where TTL is the distance between the object side surface S1 of the first lens E1 and the imaging surface S17 on the optical axis, and ImgH is half of the diagonal length of the effective pixel area on the imaging surface S17;
T45×f×tan(HFOV)＝1.22mm 2 wherein T45 is the distance between the fourth lens E4 and the fifth lens E5 on the optical axis, f is the total effective focal length of the optical imaging lens, and HFOV is the maximum half field angle of the optical imaging lens;
sd_max/sd_min=2.77, wherein sd_max is the maximum value of the maximum effective diameter of each of the object-side surface S1 of the first lens element E1 to the image-side surface S14 of the seventh lens element E7, and sd_min is the minimum value of the maximum effective diameter of each of the object-side surface S1 of the first lens element E1 to the image-side surface S14 of the seventh lens element E7;
(r14+r13)/(R14-R13) =0.58, wherein R14 is the radius of curvature of the image side surface S14 of the seventh lens element E7, and R13 is the radius of curvature of the object side surface S13 of the seventh lens element E7;
T67/t12=21.10, where T67 is the separation distance of the sixth lens E6 and the seventh lens E7 on the optical axis, and T12 is the separation distance of the first lens E1 and the second lens E2 on the optical axis;
Σct/Σt=1.72, wherein Σct is the sum of the thicknesses of the centers of the first lens element E1 to the seventh lens element E7 on the optical axis, respectively, Σt is the sum of the distances between any two adjacent lens elements of the first lens element E1 to the seventh lens element E7 on the optical axis;
r13/f7=0.69, where R13 is the radius of curvature of the object side surface S13 of the seventh lens E7, and f7 is the effective focal length of the seventh lens E7;
CT 1/t12=27.37, where CT1 is the center thickness of the first lens E1 on the optical axis, and T12 is the separation distance between the first lens E1 and the second lens E2 on the optical axis;
f1/f=1.03, where f1 is the effective focal length of the first lens E1, and f is the total effective focal length of the optical imaging lens;
f7/f= -0.60, wherein f7 is the effective focal length of the seventh lens E7, and f is the total effective focal length of the optical imaging lens;
SAG71/CT7 = -3.33, wherein SAG71 is a distance between an intersection point of the object side surface S13 of the seventh lens E7 and the optical axis and an apex of an effective radius of the object side surface S13 of the seventh lens E7 on the optical axis, and CT7 is a center thickness of the seventh lens E7 on the optical axis;
CT 6/(CT 5+ct 7) =0.85, wherein CT6 is the center thickness of the sixth lens element E6 on the optical axis, CT5 is the center thickness of the fifth lens element E5 on the optical axis, and CT7 is the center thickness of the seventh lens element E7 on the optical axis;
fr13= -2.40, where R13 is the radius of curvature of the object side S13 of the seventh lens E7, and f is the total effective focal length of the optical imaging lens;
f/r1+fr2+fr3+ff4=6.97, where R1 is a radius of curvature of the object-side surface S1 of the first lens element E1, R2 is a radius of curvature of the image-side surface S2 of the first lens element E1, R3 is a radius of curvature of the object-side surface S3 of the second lens element E2, R4 is a radius of curvature of the image-side surface E4 of the second lens element E2, and f is a total effective focal length of the optical imaging lens;
td/epd=1.58, where Td is the distance on the optical axis between the object side surface S1 of the first lens element E1 and the image side surface S14 of the seventh lens element E7, and EPD is the entrance pupil diameter of the optical imaging lens;
f7/fi < 1, where f7 is the effective focal length of the seventh lens E7, fi is the effective focal length of the i-th lens (where i=1, 2,3,4,5, or 6).
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 2A to 2C, the optical imaging lens provided in 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 4C. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for 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 according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 4 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 2, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 4 Table 4
As can be seen from table 4, in embodiment 2, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 5 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -4.70E-03 2.21E-02 -6.02E-02 8.87E-02 -8.05E-02 4.48E-02 -1.49E-02 2.66E-03 -1.94E-04
S2 4.66E-02 -4.90E-03 -1.21E-01 2.12E-01 -1.92E-01 1.03E-01 -3.26E-02 5.61E-03 -4.00E-04
S3 -2.35E-02 6.98E-02 -2.25E-01 3.20E-01 -2.65E-01 1.34E-01 -3.98E-02 6.36E-03 -4.10E-04
S4 -8.12E-02 1.16E-01 -1.98E-01 2.17E-01 -1.34E-01 3.08E-02 1.17E-02 -8.92E-03 1.57E-03
S5 -9.93E-03 3.63E-02 -2.87E-02 -3.55E-04 4.68E-02 -5.90E-02 3.60E-02 -1.12E-02 1.44E-03
S6 -2.66E-02 1.45E-01 -4.41E-01 8.40E-01 -9.58E-01 6.33E-01 -2.05E-01 1.19E-02 6.63E-03
S7 -6.84E-02 -4.57E-02 4.54E-01 -1.44E+00 2.32E+00 -2.15E+00 1.16E+00 -3.34E-01 4.02E-02
S8 -3.65E-02 -1.43E-01 4.31E-01 -7.28E-01 7.23E-01 -4.37E-01 1.57E-01 -3.06E-02 2.46E-03
S9 -3.03E-02 -1.03E-01 2.16E-01 -2.05E-01 1.03E-01 -2.73E-02 2.66E-03 2.79E-04 -5.88E-05
S10 4.22E-02 -2.52E-01 3.57E-01 -2.82E-01 1.37E-01 -4.19E-02 7.90E-03 -8.37E-04 3.80E-05
S11 5.49E-02 -7.90E-02 3.81E-03 2.95E-02 -2.09E-02 7.03E-03 -1.29E-03 1.23E-04 -4.76E-06
S12 9.39E-02 -6.14E-03 -5.71E-02 4.50E-02 -1.78E-02 4.11E-03 -5.58E-04 4.09E-05 -1.25E-06
S13 -1.71E-02 8.81E-02 -7.14E-02 2.79E-02 -6.22E-03 8.28E-04 -6.57E-05 2.86E-06 -5.26E-08
S14 -5.86E-02 3.75E-02 -1.37E-02 1.80E-03 1.87E-04 -8.90E-05 1.14E-05 -6.59E-07 1.47E-08
TABLE 5
Table 6 shows the effective focal lengths f1 to f7 of the respective lenses in embodiment 2, the total effective focal length f of the optical imaging lens, the total optical length TTL, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, the maximum half field angle HFOV, and the f-number Fno.
TABLE 6
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 4A to 4C, the optical imaging lens provided in 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 6C. 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 according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is convex. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 7 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 7
As is clear from table 7, in embodiment 3, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -3.29E-03 1.13E-02 -2.99E-02 4.29E-02 -3.86E-02 2.13E-02 -6.97E-03 1.20E-03 -8.28E-05
S2 -5.50E-02 1.02E-01 -1.81E-01 2.48E-01 -2.33E-01 1.41E-01 -5.25E-02 1.09E-02 -9.66E-04
S3 -8.95E-02 5.70E-02 -8.31E-02 1.24E-01 -1.23E-01 7.53E-02 -2.72E-02 5.33E-03 -4.31E-04
S4 -5.23E-02 4.86E-02 -1.92E-01 4.56E-01 -6.10E-01 4.88E-01 -2.32E-01 5.97E-02 -6.44E-03
S5 3.15E-02 -3.09E-02 1.38E-01 -2.93E-01 3.90E-01 -3.18E-01 1.56E-01 -4.26E-02 4.99E-03
S6 -1.67E-02 5.69E-02 -1.98E-01 3.01E-01 -1.04E-01 -2.51E-01 3.50E-01 -1.79E-01 3.42E-02
S7 -2.71E-02 -1.94E-01 6.92E-01 -1.52E+00 2.02E+00 -1.65E+00 8.15E-01 -2.20E-01 2.49E-02
S8 -6.33E-02 -3.57E-02 1.46E-01 -2.61E-01 2.55E-01 -1.48E-01 5.08E-02 -9.37E-03 7.05E-04
S9 -5.79E-02 -4.47E-03 5.15E-02 -3.94E-02 -1.00E-02 2.56E-02 -1.33E-02 3.02E-03 -2.57E-04
S10 4.00E-02 -1.87E-01 2.43E-01 -1.81E-01 8.25E-02 -2.36E-02 4.12E-03 -4.00E-04 1.65E-05
S11 4.18E-02 -5.91E-02 2.23E-03 2.21E-02 -1.72E-02 6.47E-03 -1.31E-03 1.37E-04 -5.80E-06
S12 6.79E-02 1.92E-02 -6.47E-02 4.31E-02 -1.57E-02 3.48E-03 -4.60E-04 3.31E-05 -9.98E-07
S13 -3.94E-04 5.43E-02 -4.68E-02 1.88E-02 -4.22E-03 5.67E-04 -4.51E-05 1.97E-06 -3.64E-08
S14 -3.22E-02 8.25E-03 2.35E-03 -2.86E-03 9.27E-04 -1.51E-04 1.35E-05 -6.33E-07 1.22E-08
TABLE 8
Table 9 shows the effective focal lengths f1 to f7 of the respective lenses in embodiment 3, the total effective focal length f of the optical imaging lens, the total optical length TTL, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, the maximum half field angle HFOV, and the f-number Fno.
f1(mm) 5.22 f7(mm) -2.82
f2(mm) -14.82 f(mm) 4.56
f3(mm) 7.80 TTL(mm) 5.45
f4(mm) -14.73 ImgH(mm) 4.15
f5(mm) -22.17 HFOV(°) 42.1
f6(mm) 4.91 Fno 1.49
TABLE 9
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 6A to 6C, the optical imaging lens provided in 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 8C. 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 according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 10 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 4, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 10
As can be seen from table 10, in example 4, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 11 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 11
Table 12 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 4, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.96 f7(mm) -2.44
f2(mm) -11.91 f(mm) 4.46
f3(mm) 9.63 TTL(mm) 5.50
f4(mm) -115.71 ImgH(mm) 4.15
f5(mm) -14.01 HFOV(°) 42.6
f6(mm) 3.64 Fno 1.52
Table 12
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 8A to 8C, the optical imaging lens provided in 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 10C. 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, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 13 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 13
As is clear from table 13, in example 5, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -2.93E-03 1.40E-02 -3.96E-02 5.90E-02 -5.39E-02 2.97E-02 -9.62E-03 1.63E-03 -1.09E-04
S2 6.50E-02 -7.45E-02 4.02E-02 -1.78E-02 1.96E-02 -2.24E-02 1.30E-02 -3.63E-03 3.96E-04
S3 -8.49E-03 -2.89E-03 -6.91E-02 1.11E-01 -7.95E-02 2.61E-02 -1.08E-03 -1.46E-03 2.63E-04
S4 -7.73E-02 9.77E-02 -1.68E-01 1.75E-01 -7.78E-02 -2.45E-02 4.64E-02 -2.08E-02 3.24E-03
S5 1.09E-03 9.33E-03 6.87E-02 -2.17E-01 3.45E-01 -3.16E-01 1.71E-01 -5.03E-02 6.27E-03
S6 1.76E-03 -3.54E-02 2.35E-01 -7.17E-01 1.32E+00 -1.48E+00 1.00E+00 -3.76E-01 6.01E-02
S7 -3.87E-02 -1.18E-01 3.69E-01 -7.45E-01 8.85E-01 -6.31E-01 2.53E-01 -4.79E-02 2.29E-03
S8 -5.48E-02 -7.86E-02 2.46E-01 -4.17E-01 4.07E-01 -2.41E-01 8.44E-02 -1.56E-02 1.14E-03
S9 -2.82E-02 -1.20E-01 2.40E-01 -2.19E-01 9.80E-02 -1.65E-02 -3.03E-03 1.60E-03 -1.75E-04
S10 5.38E-02 -2.96E-01 4.26E-01 -3.42E-01 1.69E-01 -5.24E-02 9.99E-03 -1.07E-03 4.90E-05
S11 6.80E-02 -1.20E-01 5.27E-02 -1.24E-03 -9.95E-03 4.82E-03 -1.05E-03 1.11E-04 -4.67E-06
S12 9.34E-02 -1.08E-02 -5.01E-02 4.10E-02 -1.66E-02 3.94E-03 -5.46E-04 4.08E-05 -1.27E-06
S13 -1.43E-02 8.39E-02 -6.85E-02 2.69E-02 -5.96E-03 7.93E-04 -6.27E-05 2.72E-06 -4.98E-08
S14 -7.04E-02 5.53E-02 -2.44E-02 5.19E-03 -4.46E-04 -1.66E-05 6.42E-06 -4.70E-07 1.17E-08
TABLE 14
Table 15 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 5, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.54 f7(mm) -2.87
f2(mm) -7.29 f(mm) 4.68
f3(mm) 8.26 TTL(mm) 5.45
f4(mm) -47.05 ImgH(mm) 4.15
f5(mm) -44.91 HFOV(°) 41.1
f6(mm) 5.33 Fno 1.49
TABLE 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 10A to 10C, the optical imaging lens provided in 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 12C. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 16 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 6, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
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Table 16
As is clear from table 16, in example 6, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 17 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -2.33E-03 1.16E-02 -3.34E-02 4.99E-02 -4.55E-02 2.49E-02 -7.96E-03 1.31E-03 -8.35E-05
S2 6.38E-02 -6.80E-02 3.20E-02 -1.26E-02 1.94E-02 -2.49E-02 1.50E-02 -4.25E-03 4.71E-04
S3 -1.00E-02 -9.20E-04 -6.36E-02 8.92E-02 -4.71E-02 -4.79E-04 1.16E-02 -4.73E-03 6.15E-04
S4 -8.00E-02 1.06E-01 -2.03E-01 2.48E-01 -1.72E-01 4.71E-02 1.47E-02 -1.33E-02 2.50E-03
S5 1.96E-04 1.67E-02 4.36E-02 -1.70E-01 2.93E-01 -2.83E-01 1.59E-01 -4.87E-02 6.20E-03
S6 2.68E-03 -3.71E-02 2.38E-01 -7.22E-01 1.33E+00 -1.50E+00 1.02E+00 -3.83E-01 6.17E-02
S7 -3.12E-02 -1.53E-01 4.62E-01 -9.05E-01 1.07E+00 -7.69E-01 3.18E-01 -6.50E-02 4.21E-03
S8 -4.24E-02 -1.32E-01 3.74E-01 -6.10E-01 5.94E-01 -3.57E-01 1.28E-01 -2.49E-02 1.97E-03
S9 -2.02E-02 -1.68E-01 3.37E-01 -3.26E-01 1.66E-01 -4.13E-02 1.64E-03 1.29E-03 -1.85E-04
S10 4.04E-02 -3.02E-01 4.70E-01 -4.03E-01 2.11E-01 -6.90E-02 1.39E-02 -1.55E-03 7.42E-05
S11 6.88E-02 -1.41E-01 9.08E-02 -3.08E-02 3.28E-03 1.16E-03 -4.37E-04 5.49E-05 -2.48E-06
S12 9.67E-02 -3.28E-02 -2.75E-02 2.91E-02 -1.28E-02 3.14E-03 -4.43E-04 3.35E-05 -1.04E-06
S13 2.27E-02 3.43E-02 -4.44E-02 2.12E-02 -5.30E-03 7.68E-04 -6.50E-05 2.98E-06 -5.73E-08
S14 -5.53E-02 4.17E-02 -2.06E-02 4.65E-03 -3.76E-04 -3.02E-05 8.29E-06 -5.97E-07 1.50E-08
TABLE 17
Table 18 shows the effective focal lengths f1 to f7 of the respective lenses in embodiment 6, the total effective focal length f of the optical imaging lens, the total optical length TTL, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, the maximum half field angle HFOV, and the f-number Fno.
f1(mm) 4.61 f7(mm) -3.06
f2(mm) -7.47 f(mm) 4.68
f3(mm) 8.19 TTL(mm) 5.45
f4(mm) -42.13 ImgH(mm) 4.15
f5(mm) -49.08 HFOV(°) 41.1
f6(mm) 5.58 Fno 1.49
TABLE 18
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 12A to 12C, the optical imaging lens provided in 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 14C. Fig. 13 shows a schematic structural diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 19 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 7, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 19
As is clear from table 19, in example 7, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 20 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -2.15E-03 1.00E-02 -2.76E-02 3.93E-02 -3.47E-02 1.84E-02 -5.64E-03 8.65E-04 -4.66E-05
S2 6.65E-02 -7.94E-02 5.69E-02 -5.46E-02 7.01E-02 -6.33E-02 3.20E-02 -8.29E-03 8.67E-04
S3 -6.11E-03 -9.29E-03 -5.50E-02 7.66E-02 -2.43E-02 -2.44E-02 2.46E-02 -8.30E-03 1.00E-03
S4 -7.43E-02 7.97E-02 -9.69E-02 -1.91E-02 2.31E-01 -3.14E-01 2.04E-01 -6.68E-02 8.80E-03
S5 3.31E-03 -5.29E-03 1.37E-01 -3.95E-01 6.14E-01 -5.57E-01 2.97E-01 -8.57E-02 1.04E-02
S6 2.08E-03 -3.27E-02 2.09E-01 -6.26E-01 1.15E+00 -1.30E+00 8.93E-01 -3.40E-01 5.55E-02
S7 -3.64E-02 -1.11E-01 2.84E-01 -4.74E-01 4.29E-01 -1.78E-01 -1.36E-02 3.83E-02 -9.49E-03
S8 -4.43E-02 -1.17E-01 3.29E-01 -5.39E-01 5.27E-01 -3.18E-01 1.15E-01 -2.23E-02 1.77E-03
S9 -2.31E-02 -1.56E-01 3.19E-01 -3.11E-01 1.58E-01 -3.81E-02 8.05E-04 1.43E-03 -1.96E-04
S10 3.79E-02 -2.93E-01 4.58E-01 -3.94E-01 2.06E-01 -6.76E-02 1.36E-02 -1.53E-03 7.32E-05
S11 6.81E-02 -1.37E-01 8.51E-02 -2.78E-02 2.54E-03 1.23E-03 -4.30E-04 5.31E-05 -2.38E-06
S12 9.88E-02 -3.29E-02 -2.88E-02 3.00E-02 -1.30E-02 3.18E-03 -4.48E-04 3.37E-05 -1.05E-06
S13 2.54E-02 2.82E-02 -3.92E-02 1.90E-02 -4.76E-03 6.89E-04 -5.81E-05 2.65E-06 -5.08E-08
S14 -5.19E-02 3.82E-02 -1.87E-02 4.06E-03 -2.61E-04 -4.45E-05 9.39E-06 -6.46E-07 1.59E-08
Table 20
Table 21 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 7, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
Table 21
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 14A to 14C, the optical imaging lens provided in 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 16C. 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 according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 22 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 8, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 22
As can be seen from table 22, in example 8, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 23 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -2.34E-03 1.22E-02 -3.25E-02 4.58E-02 -3.97E-02 2.07E-02 -6.20E-03 9.36E-04 -5.07E-05
S2 5.98E-02 -7.90E-02 6.69E-02 -5.70E-02 5.29E-02 -3.99E-02 1.85E-02 -4.51E-03 4.47E-04
S3 -1.03E-02 -2.49E-02 -8.64E-03 1.96E-02 1.15E-02 -3.35E-02 2.31E-02 -6.90E-03 7.77E-04
S4 -7.12E-02 6.76E-02 -9.49E-02 2.98E-02 1.23E-01 -2.03E-01 1.40E-01 -4.73E-02 6.33E-03
S5 5.32E-03 2.78E-03 8.58E-02 -2.66E-01 4.31E-01 -4.01E-01 2.17E-01 -6.37E-02 7.83E-03
S6 4.43E-03 -4.41E-02 2.59E-01 -7.68E-01 1.40E+00 -1.57E+00 1.07E+00 -4.07E-01 6.62E-02
S7 -3.33E-02 -1.27E-01 3.85E-01 -7.81E-01 9.49E-01 -6.97E-01 2.91E-01 -5.94E-02 3.67E-03
S8 -5.27E-02 -7.93E-02 2.56E-01 -4.46E-01 4.48E-01 -2.71E-01 9.69E-02 -1.84E-02 1.39E-03
S9 -4.71E-02 -7.35E-02 1.80E-01 -1.68E-01 6.38E-02 1.77E-03 -9.84E-03 3.05E-03 -3.03E-04
S10 3.80E-03 -2.12E-01 3.53E-01 -3.10E-01 1.64E-01 -5.42E-02 1.09E-02 -1.22E-03 5.85E-05
S11 6.30E-02 -1.34E-01 9.61E-02 -4.30E-02 1.15E-02 -1.64E-03 8.79E-05 3.44E-06 -4.15E-07
S12 9.74E-02 -4.33E-02 -1.65E-02 2.30E-02 -1.07E-02 2.73E-03 -3.95E-04 3.03E-05 -9.56E-07
S13 4.63E-02 -8.85E-03 -1.59E-02 1.12E-02 -3.21E-03 4.97E-04 -4.37E-05 2.05E-06 -4.00E-08
S14 -3.52E-02 2.21E-02 -1.35E-02 3.57E-03 -3.58E-04 -1.32E-05 5.90E-06 -4.62E-07 1.21E-08
Table 23
Table 24 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 8, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.76 f7(mm) -3.16
f2(mm) -8.03 f(mm) 4.68
f3(mm) 8.45 TTL(mm) 5.45
f4(mm) -34.61 ImgH(mm) 4.15
f5(mm) -41.04 HFOV(°) 41.1
f6(mm) 5.32 Fno 1.49
Table 24
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve of the optical imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 16A to 16C, the optical imaging lens provided in embodiment 8 can achieve good imaging quality.
Example 9
An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18C. Fig. 17 shows a schematic configuration diagram of an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 25 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 9, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 25
As is clear from table 25, in example 9, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 26 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Table 26
Table 27 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 9, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.72 f7(mm) -3.21
f2(mm) -7.97 f(mm) 4.68
f3(mm) 8.50 TTL(mm) 5.45
f4(mm) -32.00 ImgH(mm) 4.15
f5(mm) -43.75 HFOV(°) 41.2
f6(mm) 5.40 Fno 1.49
Table 27
Fig. 18A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 9, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve of the optical imaging lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 18C shows a distortion curve of the optical imaging lens of embodiment 9, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 18A to 18C, the optical imaging lens provided in embodiment 9 can achieve good imaging quality.
Example 10
An optical imaging lens according to embodiment 10 of the present application is described below with reference to fig. 19 to 20C. Fig. 19 shows a schematic structural diagram of an optical imaging lens according to embodiment 10 of the present application.
As shown in fig. 19, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 28 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the optical imaging lens of example 10, wherein the radii of curvature and thicknesses are each in millimeters (mm).
Table 28
As can be seen from table 28, in embodiment 10, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 29 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 10, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -1.73E-03 6.40E-03 -2.10E-02 3.49E-02 -3.59E-02 2.24E-02 -8.29E-03 1.67E-03 -1.41E-04
S2 3.18E-02 -3.19E-02 6.12E-04 2.45E-02 -2.74E-02 1.48E-02 -4.14E-03 4.83E-04 -3.69E-07
S3 -2.67E-02 -5.52E-03 -2.09E-02 1.33E-02 2.13E-02 -3.55E-02 2.22E-02 -6.69E-03 8.06E-04
S4 -5.78E-02 5.79E-02 -1.26E-01 1.92E-01 -2.09E-01 1.61E-01 -8.16E-02 2.38E-02 -2.95E-03
S5 1.40E-02 6.22E-03 4.33E-02 -1.06E-01 1.43E-01 -1.12E-01 5.11E-02 -1.26E-02 1.34E-03
S6 -7.23E-04 -2.31E-03 7.61E-02 -2.62E-01 5.19E-01 -6.04E-01 4.19E-01 -1.59E-01 2.58E-02
S7 -4.01E-02 -2.98E-02 3.74E-02 -1.07E-02 -1.12E-01 2.13E-01 -1.78E-01 7.32E-02 -1.19E-02
S8 -6.61E-02 2.14E-02 -4.53E-02 7.88E-02 -1.11E-01 9.62E-02 -4.85E-02 1.31E-02 -1.47E-03
S9 -2.63E-02 -7.19E-02 1.38E-01 -1.14E-01 4.07E-02 -6.44E-04 -4.30E-03 1.28E-03 -1.18E-04
S10 1.94E-02 -1.65E-01 2.36E-01 -1.83E-01 8.62E-02 -2.54E-02 4.60E-03 -4.65E-04 2.01E-05
S11 4.82E-02 -7.26E-02 1.17E-02 1.38E-02 -1.07E-02 3.75E-03 -7.21E-04 7.25E-05 -2.97E-06
S12 9.23E-02 -9.86E-03 -5.10E-02 4.08E-02 -1.61E-02 3.72E-03 -5.04E-04 3.69E-05 -1.12E-06
S13 1.81E-02 1.90E-02 -2.18E-02 9.46E-03 -2.16E-03 2.84E-04 -2.17E-05 9.02E-07 -1.57E-08
S14 -3.99E-02 1.95E-02 -7.17E-03 1.10E-03 3.41E-05 -3.42E-05 4.59E-06 -2.62E-07 5.66E-09
Table 29
Table 30 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 10, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.77 f7(mm) -2.83
f2(mm) -8.68 f(mm) 4.56
f3(mm) 9.38 TTL(mm) 5.45
f4(mm) -100.71 ImgH(mm) 4.15
f5(mm) 5502.98 HFOV(°) 41.9
f6(mm) 5.93 Fno 1.49
Table 30
Fig. 20A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 10, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 20B shows an astigmatism curve of the optical imaging lens of embodiment 10, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 20C shows a distortion curve of the optical imaging lens of embodiment 10, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 20A to 20C, the optical imaging lens provided in embodiment 10 can achieve good imaging quality.
Example 11
An optical imaging lens according to embodiment 11 of the present application is described below with reference to fig. 21 to 22C. Fig. 21 shows a schematic structural diagram of an optical imaging lens according to embodiment 11 of the present application.
As shown in fig. 21, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 31 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 11, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
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Table 31
As can be seen from table 31, in example 11, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 32 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 11, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -4.47E-03 1.88E-02 -5.13E-02 7.78E-02 -7.31E-02 4.21E-02 -1.45E-02 2.68E-03 -2.06E-04
S2 2.78E-02 2.95E-02 -1.50E-01 2.09E-01 -1.63E-01 7.44E-02 -1.79E-02 1.47E-03 9.44E-05
S3 -3.99E-02 9.21E-02 -2.37E-01 2.93E-01 -2.16E-01 9.55E-02 -2.29E-02 1.95E-03 1.11E-04
S4 -7.53E-02 1.13E-01 -2.09E-01 2.66E-01 -2.37E-01 1.46E-01 -5.83E-02 1.30E-02 -1.18E-03
S5 3.26E-06 3.01E-02 1.03E-03 -5.92E-02 1.21E-01 -1.21E-01 6.75E-02 -2.03E-02 2.60E-03
S6 -1.02E-03 -2.52E-02 1.84E-01 -5.57E-01 1.00E+00 -1.10E+00 7.23E-01 -2.64E-01 4.14E-02
S7 -6.30E-02 2.42E-02 -9.85E-02 2.24E-01 -3.72E-01 3.93E-01 -2.54E-01 9.16E-02 -1.39E-02
S8 -7.83E-02 3.88E-02 -1.06E-01 1.93E-01 -2.30E-01 1.71E-01 -7.63E-02 1.88E-02 -1.95E-03
S9 1.17E-02 -1.39E-01 1.91E-01 -1.47E-01 5.91E-02 -9.85E-03 -1.14E-03 6.81E-04 -7.25E-05
S10 1.03E-01 -2.91E-01 3.39E-01 -2.35E-01 1.02E-01 -2.84E-02 4.91E-03 -4.78E-04 2.01E-05
S11 1.30E-01 -1.91E-01 9.27E-02 -9.54E-03 -1.05E-02 5.33E-03 -1.13E-03 1.17E-04 -4.76E-06
S12 1.09E-01 -4.85E-02 -2.04E-02 2.76E-02 -1.26E-02 3.08E-03 -4.26E-04 3.13E-05 -9.45E-07
S13 1.45E-02 3.79E-02 -3.81E-02 1.59E-02 -3.59E-03 4.76E-04 -3.70E-05 1.56E-06 -2.78E-08
S14 -5.61E-02 4.30E-02 -2.18E-02 5.63E-03 -7.24E-04 3.44E-05 1.62E-06 -2.34E-07 6.84E-09
Table 32
Table 33 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 11, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.76 f7(mm) -2.94
f2(mm) -7.87 f(mm) 4.57
f3(mm) 8.01 TTL(mm) 5.45
f4(mm) 503.73 ImgH(mm) 4.15
f5(mm) 12.97 HFOV(°) 41.9
f6(mm) 20.00 Fno 1.49
Table 33
Fig. 22A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 11, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 22B shows an astigmatism curve of the optical imaging lens of embodiment 11, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 22C shows a distortion curve of the optical imaging lens of embodiment 11, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 22A to 22C, the optical imaging lens provided in embodiment 11 can achieve good imaging quality.
Example 12
An optical imaging lens according to embodiment 12 of the present application is described below with reference to fig. 23 to 24C. Fig. 23 shows a schematic configuration diagram of an optical imaging lens according to embodiment 12 of the present application.
As shown in fig. 23, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 34 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 12, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Watch 34
As can be seen from table 34, in example 12, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 35 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 12, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -5.30E-03 2.02E-02 -5.23E-02 7.61E-02 -6.85E-02 3.80E-02 -1.26E-02 2.26E-03 -1.67E-04
S2 3.81E-02 -6.66E-02 1.29E-01 -2.49E-01 3.19E-01 -2.55E-01 1.23E-01 -3.25E-02 3.65E-03
S3 -2.03E-02 -2.22E-02 4.56E-02 -1.32E-01 1.97E-01 -1.67E-01 8.34E-02 -2.29E-02 2.66E-03
S4 -5.64E-02 4.89E-02 -7.50E-02 7.82E-02 -6.25E-02 3.73E-02 -1.59E-02 3.73E-03 -3.10E-04
S5 9.18E-03 8.28E-03 5.76E-02 -1.54E-01 2.37E-01 -2.17E-01 1.16E-01 -3.40E-02 4.20E-03
S6 1.13E-03 -3.80E-02 2.27E-01 -6.43E-01 1.12E+00 -1.19E+00 7.73E-01 -2.78E-01 4.29E-02
S7 -5.79E-02 1.79E-02 -1.16E-01 2.92E-01 -4.87E-01 5.07E-01 -3.23E-01 1.15E-01 -1.73E-02
S8 -7.24E-02 3.16E-02 -1.01E-01 1.80E-01 -2.08E-01 1.52E-01 -6.83E-02 1.71E-02 -1.83E-03
S9 2.53E-03 -1.03E-01 1.56E-01 -1.50E-01 8.07E-02 -2.43E-02 3.65E-03 -1.52E-04 -1.24E-05
S10 2.00E-01 -4.15E-01 4.45E-01 -3.04E-01 1.34E-01 -3.78E-02 6.58E-03 -6.40E-04 2.67E-05
S11 2.55E-01 -3.98E-01 3.00E-01 -1.38E-01 3.97E-02 -7.19E-03 7.81E-04 -4.57E-05 1.08E-06
S12 9.27E-02 -3.57E-02 -2.82E-02 3.09E-02 -1.34E-02 3.21E-03 -4.40E-04 3.22E-05 -9.76E-07
S13 1.26E-02 4.22E-02 -4.59E-02 2.04E-02 -4.84E-03 6.68E-04 -5.40E-05 2.38E-06 -4.42E-08
S14 -5.26E-02 4.31E-02 -2.41E-02 6.91E-03 -1.08E-03 9.07E-05 -3.66E-06 3.25E-08 1.29E-09
Table 35
Table 36 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 12, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.92 f7(mm) -3.12
f2(mm) -8.97 f(mm) 4.57
f3(mm) 8.44 TTL(mm) 5.45
f4(mm) 39.00 ImgH(mm) 4.15
f5(mm) 10.43 HFOV(°) 41.9
f6(mm) -138.72 Fno 1.49
Table 36
Fig. 24A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 12, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 24B shows an astigmatism curve of the optical imaging lens of embodiment 12, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 24C shows a distortion curve of the optical imaging lens of embodiment 12, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 24A to 24C, the optical imaging lens provided in embodiment 12 can achieve good imaging quality.
Example 13
An optical imaging lens according to embodiment 13 of the present application is described below with reference to fig. 25 to 26C. Fig. 25 shows a schematic structural diagram of an optical imaging lens according to embodiment 13 of the present application.
As shown in fig. 25, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 37 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 13, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 37
As is clear from table 37, in example 13, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 38 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 13, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Table 38
Table 39 shows the effective focal lengths f1 to f7 of the respective lenses in embodiment 13, the total effective focal length f of the optical imaging lens, the total optical length TTL, half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, the maximum half field angle HFOV, and the f-number Fno.
f1(mm) 4.81 f7(mm) -2.82
f2(mm) -22.58 f(mm) 4.57
f3(mm) -515910.90 TTL(mm) 5.45
f4(mm) -5673.92 ImgH(mm) 4.15
f5(mm) 112.02 HFOV(°) 42.0
f6(mm) 4.99 Fno 1.50
Table 39
Fig. 26A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 13, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 26B shows an astigmatism curve of the optical imaging lens of embodiment 13, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 26C shows a distortion curve of the optical imaging lens of embodiment 13, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 26A to 26C, the optical imaging lens provided in embodiment 13 can achieve good imaging quality.
Example 14
An optical imaging lens according to embodiment 14 of the present application is described below with reference to fig. 27 to 28C. Fig. 27 shows a schematic structural diagram of an optical imaging lens according to embodiment 14 of the present application.
As shown in fig. 27, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is convex and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex and an image-side surface S12 thereof is concave. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 40 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the optical imaging lens of example 14, wherein the radii of curvature and thicknesses are each in millimeters (mm).
Table 40
As can be seen from table 40, in example 14, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 41 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 14, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -4.87E-03 2.12E-02 -5.83E-02 8.91E-02 -8.46E-02 4.94E-02 -1.73E-02 3.31E-03 -2.64E-04
S2 2.74E-02 1.80E-02 -1.15E-01 1.59E-01 -1.22E-01 5.47E-02 -1.34E-02 1.40E-03 -2.67E-06
S3 -3.70E-02 7.26E-02 -1.82E-01 2.09E-01 -1.35E-01 4.72E-02 -5.49E-03 -1.36E-03 3.51E-04
S4 -7.12E-02 9.63E-02 -1.64E-01 1.85E-01 -1.39E-01 6.91E-02 -2.13E-02 3.22E-03 -1.04E-04
S5 2.07E-03 1.85E-02 2.82E-02 -9.99E-02 1.59E-01 -1.41E-01 7.23E-02 -2.03E-02 2.43E-03
S6 9.27E-04 -2.55E-02 1.58E-01 -4.40E-01 7.54E-01 -7.97E-01 5.12E-01 -1.83E-01 2.83E-02
S7 -4.31E-02 -2.77E-02 -2.68E-03 1.29E-01 -3.50E-01 4.46E-01 -3.11E-01 1.14E-01 -1.73E-02
S8 -6.82E-02 2.01E-02 -5.36E-02 1.08E-01 -1.51E-01 1.27E-01 -6.17E-02 1.61E-02 -1.74E-03
S9 -6.16E-02 1.57E-03 5.36E-02 -4.79E-02 -1.45E-03 1.97E-02 -1.07E-02 2.40E-03 -1.99E-04
S10 -8.22E-03 -1.43E-01 2.57E-01 -2.29E-01 1.19E-01 -3.76E-02 7.19E-03 -7.61E-04 3.42E-05
S11 3.86E-02 -6.61E-02 3.09E-02 -8.69E-03 4.29E-04 6.08E-04 -1.93E-04 2.36E-05 -1.04E-06
S12 7.94E-02 -1.56E-02 -3.53E-02 2.83E-02 -1.08E-02 2.37E-03 -3.06E-04 2.13E-05 -6.18E-07
S13 -4.33E-03 6.35E-02 -5.33E-02 2.09E-02 -4.58E-03 5.96E-04 -4.58E-05 1.92E-06 -3.40E-08
S14 -5.46E-02 4.12E-02 -1.72E-02 2.87E-03 8.67E-06 -6.82E-05 9.56E-06 -5.56E-07 1.22E-08
Table 41
Table 42 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 14, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.94 f7(mm) -3.24
f2(mm) -8.60 f(mm) 4.56
f3(mm) 8.62 TTL(mm) 5.45
f4(mm) -71.02 ImgH(mm) 4.15
f5(mm) -36.22 HFOV(°) 41.9
f6(mm) 5.93 Fno 1.47
Table 42
Fig. 28A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 14, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 28B shows an astigmatism curve of the optical imaging lens of embodiment 14, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 28C shows a distortion curve of the optical imaging lens of embodiment 14, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 28A to 28C, the optical imaging lens provided in embodiment 14 can achieve good imaging quality.
Example 15
An optical imaging lens according to embodiment 15 of the present application is described below with reference to fig. 29 to 30C. Fig. 29 shows a schematic structural view of an optical imaging lens according to embodiment 15 of the present application.
As shown in fig. 29, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, filter E8, and imaging plane S17.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave, and an image-side surface S10 thereof is concave. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is convex, and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein the object-side surface S13 is concave, and the image-side surface S14 is concave. The filter E8 has an object side surface S15 and an image side surface S16. Light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 43 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 15, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
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Table 43
As is clear from table 43, in example 15, the object side surface and the image side surface of any one of the first lens element E1 to the seventh lens element E7 are aspherical surfaces. Table 44 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 15, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -5.48E-03 2.82E-02 -7.81E-02 1.21E-01 -1.15E-01 6.71E-02 -2.32E-02 4.35E-03 -3.37E-04
S2 3.33E-02 -2.93E-02 1.58E-02 -2.81E-02 4.29E-02 -3.82E-02 1.91E-02 -5.03E-03 5.49E-04
S3 -2.76E-02 -1.75E-03 5.43E-03 -5.34E-02 9.93E-02 -9.01E-02 4.51E-02 -1.19E-02 1.29E-03
S4 -6.69E-02 8.10E-02 -1.76E-01 2.84E-01 -3.09E-01 2.18E-01 -9.49E-02 2.27E-02 -2.27E-03
S5 8.45E-03 4.90E-03 4.85E-02 -1.32E-01 2.05E-01 -1.86E-01 9.95E-02 -2.92E-02 3.68E-03
S6 2.82E-03 -4.03E-02 2.76E-01 -8.85E-01 1.67E+00 -1.91E+00 1.30E+00 -4.86E-01 7.73E-02
S7 -6.07E-02 1.08E-01 -3.99E-01 7.44E-01 -8.66E-01 6.26E-01 -2.76E-01 6.88E-02 -7.46E-03
S8 -1.45E-02 -1.48E-01 3.12E-01 -4.21E-01 3.44E-01 -1.69E-01 4.54E-02 -5.17E-03 2.01E-05
S9 3.55E-02 -2.21E-01 3.69E-01 -3.65E-01 2.18E-01 -7.88E-02 1.63E-02 -1.61E-03 4.51E-05
S10 5.96E-02 -2.50E-01 3.01E-01 -2.10E-01 9.19E-02 -2.56E-02 4.43E-03 -4.31E-04 1.81E-05
S11 9.64E-02 -1.56E-01 8.65E-02 -2.54E-02 1.30E-03 1.67E-03 -5.43E-04 6.86E-05 -3.20E-06
S12 7.42E-02 2.84E-02 -8.38E-02 5.72E-02 -2.15E-02 4.90E-03 -6.65E-04 4.92E-05 -1.52E-06
S13 9.07E-03 3.84E-02 -3.47E-02 1.38E-02 -3.01E-03 3.90E-04 -3.00E-05 1.26E-06 -2.25E-08
S14 -4.62E-02 3.27E-02 -1.52E-02 3.59E-03 -4.26E-04 1.88E-05 8.71E-07 -1.17E-07 3.25E-09
Table 44
Table 45 shows effective focal lengths f1 to f7 of the respective lenses in embodiment 15, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half of the diagonal length ImgH of the effective pixel area on the imaging surface S17, a maximum half field angle HFOV, and an f-number Fno.
f1(mm) 4.87 f7(mm) -2.90
f2(mm) -8.76 f(mm) 4.57
f3(mm) 8.14 TTL(mm) 5.45
f4(mm) 17.68 ImgH(mm) 4.15
f5(mm) -11.27 HFOV(°) 41.8
f6(mm) 6.01 Fno 1.49
Table 45
Fig. 30A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 15, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 30B shows an astigmatism curve of the optical imaging lens of embodiment 15, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 30C shows a distortion curve of the optical imaging lens of embodiment 15, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 30A to 30C, the optical imaging lens provided in embodiment 15 can achieve good imaging quality.
In summary, examples 1 to 15 each satisfy the relationship shown in table 46.
Watch 46
The present application also provides an image pickup apparatus, in which the electron photosensitive element may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand-alone imaging apparatus such as a digital camera, or may be an imaging module integrated on a mobile electronic apparatus such as a cellular phone. The image pickup apparatus is equipped with the optical imaging lens described above.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.

Claims (34)

1. The optical imaging lens 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 optical power, characterized in that,
The first lens has positive focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface;
the object side surface of the third lens is a convex surface;
the seventh lens is provided with negative focal power, the object side surface of the seventh lens is a concave surface, and the image side surface of the seventh lens is a concave surface;
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, the aperture value FNo of the optical imaging lens and half of the diagonal length ImgH of an effective pixel area on the imaging surface of the optical imaging lens meet the requirements of TTL multiplied by FNo/ImgH < 2.1;
the curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first lens, the curvature radius R3 of the object side surface of the second lens, the curvature radius R4 of the image side surface of the second lens and the total effective focal length f of the optical imaging lens satisfy 6.6 < f/R1+f/R2+f/R3+f/R4 < 7.3;
at least one mirror surface from an object side surface of the first lens to an image side surface of the seventh lens is an aspherical mirror surface; and
the number of lenses having optical power in the optical imaging lens is seven.
2. The optical imaging lens of claim 1, wherein an effective focal length f1 of the first lens and a total effective focal length f of the optical imaging lens satisfy 0.9 < f1/f < 1.2.
3. The optical imaging lens of claim 1, wherein an effective focal length f7 of the seventh lens and a total effective focal length f of the optical imaging lens satisfy-0.8 < f7/f < -0.5.
4. The optical imaging lens as claimed in claim 1, wherein a radius of curvature R13 of an object side surface of the seventh lens and a total effective focal length f of the optical imaging lens satisfy-2.6 < f/R13 < -2.
5. The optical imaging lens as claimed in claim 4, wherein a radius of curvature R13 of an object side surface of the seventh lens and an effective focal length f7 of the seventh lens satisfy 0.5 < R13/f7 < 0.8.
6. The optical imaging lens as claimed in claim 1, wherein a radius of curvature R14 of an image side surface of the seventh lens and a radius of curvature R13 of an object side surface of the seventh lens satisfy 0.4 < (r14+r13)/(r14—r13) < 0.9.
7. The optical imaging lens as claimed in claim 1, wherein a center thickness CT1 of the first lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 12 < CT1/T12 < 28.
8. The optical imaging lens according to claim 1, wherein a separation distance T67 of the sixth lens and the seventh lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 10 < T67/T12 < 26.
9. The optical imaging lens as claimed in claim 1, wherein a separation distance T45 of the fourth lens and the fifth lens on the optical axis, a total effective focal length f of the optical imaging lens, and a maximum half field angle HFOV of the optical imaging lens satisfy 0.9mm 2 ＜T45×f×tan(HFOV)＜2mm 2 。
10. The optical imaging lens as claimed in claim 1, wherein a center thickness CT6 of the sixth lens element on the optical axis, a center thickness CT5 of the fifth lens element on the optical axis, and a center thickness CT7 of the seventh lens element on the optical axis satisfy 0.7 < CT 6/(CT 5+ct 7) < 1.
11. The optical imaging lens as claimed in claim 1, wherein a distance SAG71 of an effective radius vertex of an object side of the seventh lens from an intersection point of the object side of the seventh lens and the optical axis to the object side of the seventh lens on the optical axis and a center thickness CT7 of the seventh lens on the optical axis satisfy-4 < SAG71/CT7 < -2.
12. The optical imaging lens of any of claims 1 to 11, wherein 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 < 1.6.
13. The optical imaging lens of any of claims 1 to 11, wherein a distance Td on the optical axis from an object side surface of the first lens to an image side surface of the seventh lens and an entrance pupil diameter EPD of the optical imaging lens satisfy Td/EPD < 1.7.
14. The optical imaging lens according to any one of claims 1 to 11, wherein a distance TTL on the optical axis from an object side surface of the first lens to an imaging surface of the optical imaging lens and a half of a diagonal length ImgH of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH < 1.4.
15. The optical imaging lens according to any one of claims 1 to 11, wherein a maximum value sd_max of a maximum effective diameter of each of an object-side surface of the first lens to an image-side surface of the seventh lens and a minimum value sd_min of a maximum effective diameter of each of an object-side surface of the first lens to an image-side surface of the seventh lens satisfy 2.7+.sd_max/sd_min < 3.
16. The optical imaging lens according to any one of claims 1 to 11, wherein a sum Σct of center thicknesses of the first to seventh lenses on the optical axis and a sum Σt of spacing distances of any adjacent two of the first to seventh lenses on the optical axis satisfy 1.5 < Σct/Σtbeing equal to or less than 2.5, respectively.
17. The optical imaging lens according to any one of claims 1 to 11, wherein an effective focal length f7 of the seventh lens and an effective focal length fi of an i-th lens in the optical imaging lens satisfy |f7|/|fi| < 1, wherein i = 1,2,3,4,5 or 6.
18. The optical imaging lens 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 with optical power, characterized in that,
the first lens has positive focal power, the object side surface of the first lens is a convex surface, and the image side surface of the first lens is a concave surface;
the second lens has negative focal power, the object side surface of the second lens is a convex surface, and the image side surface of the second lens is a concave surface;
the object side surface of the third lens is a convex surface;
the seventh lens is provided with negative focal power, the object side surface of the seventh lens is a concave surface, and the image side surface of the seventh lens is a concave surface;
the curvature radius R13 of the object side surface of the seventh lens and the effective focal length f7 of the seventh lens meet the condition that R13/f7 is more than 0.5 and less than 0.8;
the curvature radius R1 of the object side surface of the first lens, the curvature radius R2 of the image side surface of the first lens, the curvature radius R3 of the object side surface of the second lens, the curvature radius R4 of the image side surface of the second lens and the total effective focal length f of the optical imaging lens satisfy 6.6 < f/R1+f/R2+f/R3+f/R4 < 7.3;
at least one mirror surface from an object side surface of the first lens to an image side surface of the seventh lens is an aspherical mirror surface; and
the number of lenses having optical power in the optical imaging lens is seven.
19. The optical imaging lens of claim 18, wherein 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 < 1.6.
20. The optical imaging lens of claim 19, wherein a distance Td on the optical axis from an object side of the first lens to an image side of the seventh lens and an entrance pupil diameter EPD of the optical imaging lens satisfy Td/EPD < 1.7.
21. The optical imaging lens as claimed in claim 18, wherein a distance TTL from an object side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis, an aperture value Fno of the optical imaging lens, and a half of a diagonal length ImgH of an effective pixel area on the imaging surface of the optical imaging lens satisfy ttl×fno/ImgH < 2.1.
22. The optical imaging lens of claim 21, wherein a distance TTL from an object side surface of the first lens to an imaging surface of the optical imaging lens on the optical axis and a half of a diagonal length ImgH of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH < 1.4.
23. The optical imaging lens as claimed in claim 18, wherein a separation distance T45 of the fourth lens and the fifth lens on the optical axis, a total effective focal length f of the optical imaging lens, and a maximum half field angle HFOV of the optical imaging lens satisfy 0.9mm 2 ＜T45×f×tan(HFOV)＜2mm 2 。
24. The optical imaging lens of claim 18, wherein an effective focal length f7 of the seventh lens and a total effective focal length f of the optical imaging lens satisfy-0.8 < f7/f < -0.5.
25. The optical imaging lens of claim 18, wherein a radius of curvature R14 of an image side of the seventh lens and a radius of curvature R13 of an object side of the seventh lens satisfy 0.4 < (r14+r13)/(R14-R13) < 0.9.
26. The optical imaging lens as claimed in claim 18, wherein a distance SAG71 of an effective radius vertex of an object side of the seventh lens from an intersection point of the object side of the seventh lens and the optical axis to the object side of the seventh lens on the optical axis and a center thickness CT7 of the seventh lens on the optical axis satisfy-4 < SAG71/CT7 < -2.
27. The optical imaging lens as claimed in claim 18, wherein a sum Σct of center thicknesses of the first to seventh lenses on the optical axis and a sum Σt of distances between any adjacent two of the first to seventh lenses on the optical axis satisfy 1.5 < Σct/Σtbeing less than or equal to 2.5, respectively.
28. The optical imaging lens of claim 27, wherein a center thickness CT6 of the sixth lens element on the optical axis, a center thickness CT5 of the fifth lens element on the optical axis, and a center thickness CT7 of the seventh lens element on the optical axis satisfy 0.7 < CT 6/(CT 5+ct 7) < 1.
29. The optical imaging lens according to claim 27, wherein a separation distance T67 of the sixth lens and the seventh lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 10 < T67/T12 < 26.
30. The optical imaging lens of claim 27, wherein a center thickness CT1 of the first lens on the optical axis and a separation distance T12 of the first lens and the second lens on the optical axis satisfy 12 < CT1/T12 < 28.
31. The optical imaging lens of claim 18, wherein a radius of curvature R13 of an object side surface of the seventh lens and a total effective focal length f of the optical imaging lens satisfy-2.6 < f/R13 < -2.
32. The optical imaging lens of claim 18, wherein an effective focal length f1 of the first lens and a total effective focal length f of the optical imaging lens satisfy 0.9 < f1/f < 1.2.
33. The optical imaging lens of claim 18, wherein an effective focal length f7 of the seventh lens and an effective focal length fi of an i-th lens in the optical imaging lens satisfy |f7|/|fi| < 1, wherein i = 1,2,3,4,5, or 6.
34. The optical imaging lens of any of claims 18 to 33, wherein a maximum value sd_max of a maximum effective diameter of each of an object-side surface of the first lens to an image-side surface of the seventh lens and a minimum value sd_min of a maximum effective diameter of each of an object-side surface of the first lens to an image-side surface of the seventh lens satisfy 2.7+—sd max/SD min < 3.
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