CN113433663B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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CN113433663B
CN113433663B CN202110766197.XA CN202110766197A CN113433663B CN 113433663 B CN113433663 B CN 113433663B CN 202110766197 A CN202110766197 A CN 202110766197A CN 113433663 B CN113433663 B CN 113433663B
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lens
optical imaging
imaging lens
satisfy
optical
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CN113433663A (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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    • 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

Abstract

The application discloses an optical imaging lens, which comprises 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 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 element has a negative focal power, and has a concave object-side surface and a concave image-side surface. The effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens meet the requirement that f1/f is more than 0.9 and less than 1.2.

Description

Optical imaging lens
Divisional application statement
The application is a divisional application of a Chinese invention patent application with the invention name of 'optical imaging lens' and the application number of 201811496562.4, which is filed in 2018, 12, month and 7.
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including seven lenses.
Background
With the increasing popularity of electronic products such as smart phones and tablet computers, the trend of lightening and thinning of electronic products is also increasing, which also requires that the imaging lens carried thereon has an ultra-thin characteristic. Meanwhile, as the performance of CCD and CMOS image sensors is improved and the size thereof is reduced, the corresponding imaging lenses are also required to have high-quality imaging performance.
In order to obtain a better photographing experience, for example, clear photographing can be achieved in a dark and weak light environment, the optical imaging lens also needs to have a characteristic of large aperture. However, in a large aperture lens, the aperture and the total lens length are increased due to an excessively large aperture. Therefore, how to make the optical imaging lens meet the requirement of ultra-thin application of electronic products such as ultra-thin mobile phones and the like as much as possible while ensuring the characteristic of large aperture is a problem to be solved urgently at present.
Disclosure of Invention
The present application provides an optical imaging lens, such as a large aperture lens, applicable to portable electronic products, which may solve, at least, or part of, at least one of the above-mentioned disadvantages of the related art.
In one aspect, the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens can have positive focal power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens can have negative focal power, and the object side surface of the second lens can be a convex surface, and the image side surface of the second lens can be a concave surface; the object side surface of the third lens can be a convex surface; the seventh lens element can have a negative optical power, and can have a concave object-side surface and a concave image-side surface. The effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens can satisfy 0.9 < f1/f < 1.2.
In another aspect, the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the optical lens system comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The first lens can have positive focal power, the object side surface of the first lens can be a convex surface, and the image side surface of the first lens can be a concave surface; the second lens can have negative focal power, and the object side surface of the second lens can be a convex surface, and the image side surface of the second lens can be a concave surface; the object side surface of the third lens can be a convex surface; the seventh lens element can have a negative optical power, and can have a concave object-side surface and a concave image-side surface. 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 can satisfy 0.7 < CT6/(CT5+ CT7) < 1.
In one embodiment, the distance TTL on the optical axis from the object side surface of the first lens element to the imaging surface of the optical imaging lens, the aperture value Fno of the optical imaging lens, and half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens satisfy TTL × Fno/ImgH < 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, a distance Td on an optical axis from an object side surface of the first lens to an image side surface of the seventh lens and an entrance pupil diameter EPD of the optical imaging lens may satisfy Td/EPD < 1.7.
In one embodiment, a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens may satisfy TTL/ImgH < 1.4.
In one embodiment, the separation distance T45 on the optical axis of the fourth lens and the fifth lens, 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 0.9mm2＜T45×f×tan(HFOV)＜2mm2。
In one embodiment, the radius of curvature R14 of the image-side surface of the seventh lens and the radius of curvature R13 of the object-side surface 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 can 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 can satisfy-0.8 < f7/f < -0.5.
In one embodiment, the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens can satisfy 0.9 < f1/f < 1.2.
In one embodiment, the distance SAG71 on the optical axis from the intersection point of the object-side surface of the seventh lens and the optical axis to the effective radius vertex of the object-side surface of the seventh lens and the central thickness CT7 on the optical axis of the seventh lens 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 satisfy 0.7 < CT6/(CT5+ CT7) < 1.
In one embodiment, the radius of curvature R13 of the object side surface of the seventh lens and the total effective focal length f of the optical imaging lens can satisfy-2.6 < f/R13 < -2.
In one embodiment, a separation distance T67 between the sixth lens and the seventh lens on the optical axis and a separation distance T12 between the first lens and the second lens on the optical axis may satisfy 10 < T67/T12 < 26.
In one embodiment, the central thickness CT1 of the first lens on the optical axis and the separation distance T12 of the first lens and the second lens on the optical axis can satisfy 12 < CT1/T12 < 28.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens, the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R3 of the object-side surface of the second lens, the radius of curvature R4 of the image-side surface 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, a maximum value SD _ max of the maximum effective diameters of the respective faces from the object-side surface of the first lens to the image-side surface of the seventh lens and a minimum value SD _ min of the maximum effective diameters of the respective faces from the object-side surface of the first lens to the image-side surface of the seventh lens may satisfy 2.7 ≦ SD _ max/SD _ min < 3.
In one embodiment, a sum Sigma CT of center thicknesses of the first lens to the seventh lens on the optical axis and a sum Sigma T of a distance separating any adjacent two lenses of the first lens to the seventh lens on the optical axis may satisfy 1.5 < SigmaCT/Sigma T ≦ 2.5.
In one embodiment, the effective focal length f7 of the seventh lens and the effective focal length fi of the ith lens in the optical imaging lens satisfy | f7|/| fi | < 1, where i ═ 1,2,3,4,5, or 6.
This application has adopted seven lens, through rational distribution each lens focal power, face type, each lens's central thickness and each lens between the epaxial interval etc for above-mentioned optical imaging lens has at least one beneficial effect such as large aperture, ultra-thin and high imaging quality.
Drawings
Other features, objects, and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 shows a schematic structural view of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 1, respectively;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 2, respectively;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 3, respectively;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 4, respectively;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 5, respectively;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 6, respectively;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of an optical imaging lens of embodiment 7;
fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve, respectively, of an optical imaging lens of embodiment 8;
fig. 17 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application;
fig. 18A to 18C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens of embodiment 9, respectively;
fig. 19 is a schematic structural view showing an optical imaging lens according to embodiment 10 of the present application;
fig. 20A to 20C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of embodiment 10, respectively;
fig. 21 is a schematic structural view showing an optical imaging lens according to embodiment 11 of the present application;
fig. 22A to 22C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens of embodiment 11, respectively;
fig. 23 is a schematic structural view showing an optical imaging lens according to embodiment 12 of the present application;
fig. 24A to 24C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens of embodiment 12, respectively;
fig. 25 is a schematic structural view showing an optical imaging lens according to embodiment 13 of the present application;
fig. 26A to 26C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens of embodiment 13, respectively;
fig. 27 is a schematic structural view showing an optical imaging lens according to embodiment 14 of the present application;
fig. 28A to 28C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of the optical imaging lens of example 14, respectively;
fig. 29 is a schematic structural view showing an optical imaging lens according to embodiment 15 of the present application;
fig. 30A to 30C show an axial chromatic aberration curve, an astigmatism curve, and a distortion curve of an optical imaging lens of example 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 the detailed description is merely illustrative of exemplary embodiments of the present application and does not limit the scope of the present application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in this specification, the expressions first, second, third, etc. are used only to distinguish one feature from another, and do not represent any limitation on the features. Thus, the first lens discussed below may also be referred to as the second lens or the third lens without departing from the teachings of the present application.
In the drawings, the thickness, size and shape of the lens have been slightly exaggerated for convenience of explanation. In particular, the shapes of the spherical or aspherical surfaces shown in the drawings are shown by way of example. That is, the shape of the spherical surface or the aspherical surface is not limited to the shape of the spherical surface or the aspherical surface shown in the drawings. The figures are purely diagrammatic and not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is called the object side surface of the lens, and the surface of each lens closest to the imaging surface is called the image side surface of the lens.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the 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 an exemplary embodiment of the present application may include, for example, seven lenses having optical powers, 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 to seventh lenses, any adjacent two lenses may have an air space therebetween.
In an exemplary embodiment, the first lens may have a positive optical power, and the object side surface thereof may be convex and the image side surface thereof may be concave; the second lens can have negative focal power, and the object side surface of the second lens can be a convex surface, and the image side surface of the second lens can be a concave 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 focal power or negative focal power; the sixth lens has positive focal power or negative focal power; and the seventh lens element can have a negative optical power, and the object-side surface can be concave and the image-side surface can be concave. The focal power and the surface type of the first lens and the second lens are reasonably controlled, so that the aberration of a field on the axis of the system is favorably reduced, and the field area on the axis of the system has good imaging performance. The surface types of the third lens and the seventh lens are reasonably controlled, and matching of a system chief ray and an image plane is facilitated.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression TTL × Fno/ImgH < 2.1, where TTL is a distance on an optical axis from an object-side surface of the first lens to an imaging surface of the optical imaging lens, 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 may further satisfy 1.8 < TTL XFno/ImgH < 2.1, for example, 1.93 ≦ TTL XFno/ImgH ≦ 2.01. The optical imaging lens meets the condition formula of TTL multiplied by Fno/ImgH less than 2.1, and the ratio of the product of the total length of the system and the relative aperture to the image height is reasonably restricted, 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 conditional expression 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 ≦ f/EPD ≦ 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 favorable for clear imaging of the lens in the dark and weak light environment.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression TTL/ImgH < 1.4, where TTL is a distance on an optical axis from an object side surface of the first lens element to an imaging surface 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 and ImgH can further satisfy 1.3 < TTL/ImgH < 1.4, e.g., 1.31 ≦ TTL/ImgH ≦ 1.33. By restricting the ratio of the total length of the optical imaging lens to the image height, the system can have the characteristic of being ultrathin.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression of 0.9mm2＜T45×f×tan(HFOV)＜2mm2Wherein 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 0.97mm2≤T45×f×tan(HFOV)≤1.99mm2. Through the optimization of the spacing distance between the fourth lens and the fifth lens on the optical axis and the limitation of the image height, the imaging system can be well matched with a large image plane chip, so that the imaging system has the characteristics of high pixel, 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 maximum effective diameters of respective surfaces from an object-side surface of the first lens to an image-side surface of the seventh lens, and SD _ min is a minimum value of maximum effective diameters of respective surfaces from 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 ≦ SD _ max/SD _ min ≦ 2.96. The size of the lens can be effectively controlled by reasonably controlling the effective diameter parameters of each lens of the lens, and the miniaturization effect 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. of (R14+ R13)/(R14-R13). ltoreq.0.84. By restricting the ratio of the sum of the curvature radii of the object side surface and the image side surface of the seventh lens and the difference between the curvature radii within a certain range, the deflection angle of incident light on the seventh lens can be reduced, the distribution of light beams on a curved surface can be reasonably adjusted, and meanwhile, 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 can further satisfy 10.05 ≦ T67/T12 ≦ 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 can be controlled within a reasonable range.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.5 < ∑ CT ≦ 2.5, where Σ CT is a sum of central thicknesses of the first lens to the seventh lens on the optical axis, respectively, and Σ T is a sum of separation distances of any adjacent two lenses of the first lens to the seventh lens on the optical axis. More specifically, Σ CT and Σ T can further satisfy 1.53 ≦ Σ CT/Σ T ≦ 2.50. By reasonably controlling the sum of the central thicknesses of all 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, and f7 is an effective focal length of the seventh lens. More specifically, R13 and f7 can further satisfy 0.59 ≦ R13/f7 ≦ 0.74. By controlling the ratio of the curvature radius of the object side surface of the seventh lens to the effective focal length of the seventh lens, the field curvature contribution amount of the object side surface of the seventh lens is in a reasonable range, and the field curvature amount generated by the front 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 central thickness of the first lens on the optical axis, and T12 is a separation distance between the first lens and the second lens on the optical axis. More specifically, CT1 and T12 further satisfy 12.95 ≦ CT1/T12 ≦ 27.78. By reasonably controlling the ratio of CT1 to T12, the distortion contribution amount of each field of view of the system can be controlled within a reasonable range, and the imaging quality is 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 can further satisfy 0.97. ltoreq. f 1/f. ltoreq.1.14. By controlling the effective focal length of the first lens, the high-grade spherical aberration contribution amount of the first lens can be reasonably controlled, so that the high-grade 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 can further satisfy-0.71. ltoreq. f 7/f. ltoreq-0.55. By reasonably controlling the effective focal length of the seventh lens, the seventh lens can generate positive astigmatism and can balance 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 conditional expression-4 < SAG71/CT7 < -2, where SAG71 is a distance on the optical axis from an intersection point of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens, and CT7 is a center thickness of the seventh lens on the optical axis. More specifically, SAG71 and CT7 further satisfy-3.88 ≦ SAG71/CT7 ≦ -2.18. The conditional expression-4 < SAG71/CT7 < -2 is satisfied, the incident angle of the chief ray on the object side surface of the seventh lens can be effectively reduced, and the matching degree of the lens and the chip can be improved.
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 ith 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 lengths of 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 < CT6/(CT5+ CT7) < 1, where CT6 is a central thickness of the sixth lens on the optical axis, CT5 is a central thickness of the fifth lens on the optical axis, and CT7 is a central thickness of the seventh lens on the optical axis. More specifically, CT6, CT5 and CT7 can further satisfy 0.79. ltoreq. CT6/(CT5+ CT 7). ltoreq.0.99. By restricting the ratio of the central thickness of the sixth lens to the sum of the central 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 conditional expression-2.6 < f/R13 < -2, where R13 is a radius of curvature of an object side surface of the seventh lens and f is a total effective focal length of the optical imaging lens. More specifically, f and R13 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 amount of the object side surface of the seventh lens can be in a reasonable range, and the field curvature amount generated by the front 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 can further satisfy 6.64. ltoreq. f/R1+ f/R2+ f/R3+ f/R4. ltoreq.7.24. By controlling the curvature radius of each curved surface of the first lens and the second lens and the effective focal length ratio of the system, the first lens and the second lens can share reasonable focal power, and the spherical aberration of the system is easy to correct.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression Td/EPD < 1.7, where Td is a distance on an optical axis from an object side surface of the first lens to an image side surface of the seventh lens, and EPD is an entrance pupil diameter of the optical imaging lens. More specifically, Td and EPD may further satisfy 1.5 < Td/EPD < 1.7, e.g., 1.57 ≦ Td/EPD ≦ 1.68. Through the reasonable position of setting up the diaphragm, aberration such as coma, astigmatism, distortion and axial chromatic aberration related to the diaphragm can be effectively corrected, make the system have good image quality.
In an exemplary embodiment, the optical imaging lens may further include a diaphragm to improve the imaging quality of the lens. Alternatively, a diaphragm may be disposed between the object side and the first lens.
Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting the photosensitive element on the imaging surface.
The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, seven lenses as described above. By reasonably distributing the focal power, the surface type, the central thickness of each lens, the on-axis distance 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 machinability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and can be suitable for portable electronic products. The optical imaging lens with the configuration also has the advantages of large aperture, ultra-thin and high imaging quality.
In the embodiment of the present application, at least one of the mirror surfaces of the respective lenses is an aspherical mirror surface, that is, 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 surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better curvature radius characteristic, and has advantages of improving distortion aberration and improving astigmatism aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, each of the first, second, third, fourth, fifth, sixth, and seventh lenses has an object-side surface and an image-side surface that are aspheric mirror surfaces.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although seven lenses are exemplified in the embodiment, the optical imaging lens is not limited to include seven lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2C. Fig. 1 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, an optical imaging lens according to an exemplary embodiment of the present application includes, in order from an object side to an image side along an optical axis: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 1 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 1, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000081
Figure BDA0003151662430000091
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 through the seventh lens element E7 are aspheric. In the present embodiment, the profile x of each aspheric lens can be defined using, but not limited to, the following aspheric formula:
Figure BDA0003151662430000092
wherein x is the rise of the distance from the aspheric surface vertex to the aspheric surface vertex when the aspheric surface is at the position with the height of h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c being 1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the i-th order of the aspherical surface. Table 2 below shows the high-order coefficient A of each of the aspherical mirror surfaces S1 to S14 used in example 16、A8、A10、A12、A14、A16、A18、A20And A22。
Flour mark 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 gives the effective focal lengths f1 to f7 of the respective lenses, 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 ImgH of the diagonal length of the effective pixel region on the imaging surface S17, the maximum half field angle HFOV, and the f-number Fno in embodiment 1.
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
Fig. 2A shows on-axis chromatic aberration curves of the optical imaging lens of embodiment 1, which represent the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 2A to 2C, the optical imaging lens according to embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4C. In this embodiment and the following embodiments, a description of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, an optical imaging lens according to an exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 4 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 2, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000101
Figure BDA0003151662430000111
TABLE 4
As is clear from table 4, in example 2, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 are aspheric. Table 5 shows high-order term coefficients that can be used for each aspherical mirror surface in example 2, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 2.
Figure BDA0003151662430000112
Figure BDA0003151662430000121
TABLE 6
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 4B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 2. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 4A to 4C, the optical imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 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, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 7 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 3, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000122
Figure BDA0003151662430000131
TABLE 7
As is clear from table 7, in example 3, both the object-side surface and the image-side surface of any one of the first lens E1 through the seventh lens E7 are aspheric. Table 8 shows high-order term coefficients that can be used for each aspherical mirror surface in example 3, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 3.
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 represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 3. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 6A to 6C, the optical imaging lens according to embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8C. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, an optical imaging lens according to an exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 4, where the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000141
Watch 10
As can be seen from table 10, in example 4, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 are aspheric. Table 11 shows high-order term coefficients that can be used for each aspherical mirror surface in embodiment 4, wherein each aspherical mirror surface type can be defined by the formula (1) given in embodiment 1 above.
Figure BDA0003151662430000142
Figure BDA0003151662430000151
TABLE 11
Table 12 shows the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 4.
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 represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 4. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 8A to 8C, the optical imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 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, the optical imaging lens according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 13 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 5, where the units of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000161
Watch 13
As is clear from table 13, in example 5, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 are aspheric. Table 14 shows high-order term coefficients that can be used for each aspherical mirror surface in example 5, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half ImgH of a diagonal length of an effective pixel region on the imaging plane S17, a maximum half field angle HFOV, and an f-number Fno in example 5.
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
Watch 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 5. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 10A to 10C, the optical imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12C. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, an optical imaging lens according to an exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 16 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 6, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000171
Figure BDA0003151662430000181
TABLE 16
As is clear from table 16, in example 6, both the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspheric. Table 17 shows high-order term coefficients that can be used for each aspherical mirror surface in example 6, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 6.
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
Watch 18
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 6. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 12A to 12C, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14C. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens according to the exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 19 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 7, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000191
Figure BDA0003151662430000201
Watch 19
As is clear from table 19, in example 7, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 are aspheric. Table 20 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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
Watch 20
Table 21 shows effective focal lengths f1 to f7 of the respective lenses, a total effective focal length f of the optical imaging lens, an optical total length TTL, a half ImgH of a diagonal length of an effective pixel region on the imaging plane S17, a maximum half field angle HFOV, and an f-number Fno in example 7.
f1(mm) 4.64 f7(mm) -3.10
f2(mm) -7.65 f(mm) 4.68
f3(mm) 8.30 TTL(mm) 5.45
f4(mm) -40.22 ImgH(mm) 4.15
f5(mm) -46.40 HFOV(°) 41.1
f6(mm) 5.48 Fno 1.49
TABLE 21
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 7. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 14A to 14C, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 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, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 22 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 8, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000211
TABLE 22
As can be seen from table 22, in example 8, both the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are aspheric. Table 23 shows high-order term coefficients that can be used for each aspherical mirror surface in embodiment 8, wherein each aspherical mirror surface type can be defined by the formula (1) given in embodiment 1 above.
Figure BDA0003151662430000212
Figure BDA0003151662430000221
TABLE 23
Table 24 shows the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel area on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 8.
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
Watch 24
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 8. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values corresponding to different image heights. As can be seen from fig. 16A to 16C, the optical imaging lens according to 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 is a schematic structural view showing an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, an optical imaging lens according to an exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 25 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 9, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000231
TABLE 25
As is clear from table 25, in example 9, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 are aspheric. Table 26 shows high-order term coefficients that can be used for each aspherical mirror surface in example 9, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -2.66E-03 1.44E-02 -3.78E-02 5.38E-02 -4.72E-02 2.52E-02 -7.94E-03 1.31E-03 -8.56E-05
S2 5.32E-02 -5.32E-02 2.06E-02 -2.41E-03 1.01E-02 -1.88E-02 1.24E-02 -3.66E-03 4.11E-04
S3 -2.20E-02 1.28E-02 -8.72E-02 1.37E-01 -1.10E-01 4.78E-02 -9.98E-03 4.80E-04 8.55E-05
S4 -7.80E-02 7.90E-02 -1.08E-01 3.98E-02 1.22E-01 -2.14E-01 1.55E-01 -5.43E-02 7.52E-03
S5 5.58E-03 1.18E-04 1.03E-01 -3.13E-01 5.10E-01 -4.86E-01 2.72E-01 -8.21E-02 1.04E-02
S6 5.85E-03 -5.77E-02 3.28E-01 -9.71E-01 1.76E+00 -1.97E+00 1.34E+00 -5.01E-01 8.04E-02
S7 -3.22E-02 -1.33E-01 4.04E-01 -8.16E-01 9.86E-01 -7.20E-01 2.99E-01 -6.03E-02 3.61E-03
S8 -5.13E-02 -9.30E-02 2.99E-01 -5.21E-01 5.23E-01 -3.18E-01 1.14E-01 -2.18E-02 1.68E-03
S9 -4.39E-02 -1.00E-01 2.49E-01 -2.60E-01 1.34E-01 -2.96E-02 -1.71E-03 1.96E-03 -2.46E-04
S10 -6.91E-04 -2.26E-01 3.97E-01 -3.67E-01 2.04E-01 -7.05E-02 1.49E-02 -1.74E-03 8.69E-05
S11 7.40E-02 -1.63E-01 1.28E-01 -6.47E-02 2.03E-02 -3.83E-03 4.12E-04 -2.28E-05 4.82E-07
S12 1.04E-01 -6.36E-02 2.59E-03 1.31E-02 -7.55E-03 2.10E-03 -3.21E-04 2.56E-05 -8.33E-07
S13 5.56E-02 -2.61E-02 -3.64E-03 6.59E-03 -2.20E-03 3.61E-04 -3.26E-05 1.55E-06 -3.05E-08
S14 -3.22E-02 1.80E-02 -1.17E-02 3.34E-03 -4.08E-04 6.94E-06 3.20E-06 -2.96E-07 8.14E-09
Watch 26
Table 27 gives the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 9.
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
Watch 27
Fig. 18A shows an on-axis chromatic aberration curve of an optical imaging lens of embodiment 9, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 9. 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 according to 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, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 28 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 10, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000241
Figure BDA0003151662430000251
Watch 28
As can be seen from table 28, in example 10, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 are aspheric. Table 29 shows high-order term coefficients that can be used for each aspherical mirror surface in example 10, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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 the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel area on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 10.
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
Watch 30
Fig. 20A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 10, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 20B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 10. 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 according to 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 is a schematic structural view showing an optical imaging lens according to embodiment 11 of the present application.
As shown in fig. 21, an optical imaging lens according to an exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 31 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 11, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000261
Watch 31
As can be seen from table 31, in example 11, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 are aspheric. Table 32 shows high-order term coefficients that can be used for each aspherical mirror surface in example 11, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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
Watch 32
Table 33 shows the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 11.
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
Watch 33
Fig. 22A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 11, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 22B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of example 11. 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 according to 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 is a schematic structural view showing an optical imaging lens according to embodiment 12 of the present application.
As shown in fig. 23, an optical imaging lens according to an exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a concave object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. 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 type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 12, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000281
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 through the seventh lens element E7 are aspheric. Table 35 shows the high-order term coefficients that can be used for each aspherical mirror surface in example 12, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0003151662430000282
Figure BDA0003151662430000291
Watch 35
Table 36 shows the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 12.
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
Watch 36
Fig. 24A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 12, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 24B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of embodiment 12. 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 according to 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 view 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, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has positive power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 37 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 13, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000301
Watch 37
As is clear from table 37, in example 13, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 are aspheric. Table 38 shows the high-order term coefficients that can be used for each aspherical mirror surface in example 13, wherein each aspherical mirror surface type can be defined by the formula (1) given in example 1 above.
Flour mark A6 A8 A10 A12 A14 A16 A18 A20 A22
S1 -1.00E-02 3.23E-02 -7.62E-02 1.10E-01 -1.04E-01 6.34E-02 -2.38E-02 4.98E-03 -4.47E-04
S2 7.69E-02 -3.32E-01 6.66E-01 -8.43E-01 7.05E-01 -3.86E-01 1.33E-01 -2.61E-02 2.23E-03
S3 6.57E-02 -3.44E-01 6.61E-01 -9.05E-01 8.80E-01 -5.74E-01 2.35E-01 -5.43E-02 5.39E-03
S4 2.55E-02 -9.80E-02 8.36E-02 -1.88E-02 -7.08E-02 1.16E-01 -7.90E-02 2.45E-02 -2.84E-03
S5 3.80E-02 -1.33E-01 3.97E-01 -6.43E-01 6.23E-01 -3.47E-01 1.09E-01 -1.84E-02 1.42E-03
S6 -1.00E-01 5.67E-01 -1.88E+00 3.88E+00 -5.08E+00 4.22E+00 -2.16E+00 6.19E-01 -7.58E-02
S7 -1.33E-01 3.93E-01 -1.36E+00 3.00E+00 -4.25E+00 3.82E+00 -2.10E+00 6.44E-01 -8.43E-02
S8 -8.55E-02 4.90E-02 -6.75E-02 8.08E-02 -8.52E-02 6.25E-02 -2.80E-02 6.91E-03 -7.18E-04
S9 -3.12E-02 -6.81E-02 1.67E-01 -1.77E-01 1.05E-01 -3.73E-02 7.86E-03 -8.79E-04 3.93E-05
S10 -1.53E-02 -1.20E-01 1.97E-01 -1.62E-01 7.97E-02 -2.46E-02 4.66E-03 -4.98E-04 2.27E-05
S11 3.68E-02 -4.38E-02 2.03E-03 8.10E-03 -4.60E-03 1.35E-03 -2.25E-04 1.98E-05 -7.10E-07
S12 8.35E-02 -2.21E-03 -4.35E-02 2.95E-02 -1.02E-02 2.08E-03 -2.53E-04 1.67E-05 -4.61E-07
S13 1.08E-02 2.56E-02 -2.21E-02 8.19E-03 -1.65E-03 1.96E-04 -1.37E-05 5.20E-07 -8.34E-09
S14 -3.94E-02 2.12E-02 -8.73E-03 1.90E-03 -2.01E-04 5.98E-06 6.79E-07 -6.26E-08 1.51E-09
Watch 38
Table 39 shows the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 13.
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
Watch 39
Fig. 26A shows an on-axis chromatic aberration curve of the optical imaging lens of example 13, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 26B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of example 13. 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 according to 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 is a schematic structural view showing an optical imaging lens according to embodiment 14 of the present application.
As shown in fig. 27, an optical imaging lens according to an exemplary embodiment of the present application, in order from an object side to an image side along an optical axis, includes: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 40 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 14, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000311
Figure BDA0003151662430000321
Watch 40
As can be seen from table 40, in example 14, both the object-side surface and the image-side surface of any one of the first lens element E1 through the seventh lens element E7 were aspheric. Table 41 shows high-order term coefficients that can be used for each aspherical mirror surface in example 14, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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 the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel area on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 14.
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
Watch 42
Fig. 28A shows an on-axis chromatic aberration curve of the optical imaging lens of example 14, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 28B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of example 14. 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 system according to 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 is a schematic structural view showing 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, in order from an object side to an image side along an optical axis, comprises: a stop STO, a first lens E1, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, a filter E8, and an image plane S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object passes through the respective surfaces S1 to S16 in order and is finally imaged on the imaging surface S17.
Table 43 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 15, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0003151662430000331
Watch 43
As is apparent from table 43, in example 15, the object-side surface and the image-side surface of any one of the first lens E1 to the seventh lens E7 are both aspheric. Table 44 shows high-order term coefficients that can be used for each aspherical mirror surface in example 15, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark 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
Watch 44
Table 45 shows the effective focal lengths f1 to f7 of the respective lenses, the total effective focal length f of the optical imaging lens, the total optical length TTL, half ImgH of the diagonal length of the effective pixel region on the imaging plane S17, the maximum half field angle HFOV, and the f-number Fno in example 15.
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 example 15, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 30B shows an astigmatism curve representing meridional field curvature and sagittal field curvature of the optical imaging lens of example 15. 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 according to embodiment 15 can achieve good imaging quality.
In summary, examples 1 to 15 each satisfy the relationship shown in table 46.
Figure BDA0003151662430000341
Figure BDA0003151662430000351
Figure BDA0003151662430000352
TABLE 46
The present application also provides an image pickup apparatus, the electronic photosensitive element of which may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The camera device may be a stand-alone camera device such as a digital camera, or may be a camera module integrated on a mobile electronic device such as a mobile phone. The image pickup apparatus is equipped with the optical imaging lens described above.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements in which any combination of features described above or their equivalents does not depart from the spirit of the invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

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,
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 of the seventh lens is a concave surface, and the image side surface of the seventh lens is a concave surface;
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, and
the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens meet f/EPD < 1.6.
2. The optical imaging lens of claim 1, wherein the effective focal length f7 of the seventh lens and the total effective focal length f of the optical imaging lens satisfy-0.8 < f7/f < -0.5.
3. The optical imaging lens of claim 1, wherein the radius of curvature R1 of the object-side surface of the first lens, the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R3 of the object-side surface of the second lens, the radius of curvature 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.
4. The optical imaging lens of claim 1, wherein the radius of curvature R13 of the object side surface of the seventh lens and the total effective focal length f of the optical imaging lens satisfy-2.6 < f/R13 < -2.
5. The optical imaging lens of claim 1, 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 of 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 of 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 of claim 1, wherein a separation distance T67 between the sixth lens and the seventh lens on the optical axis and a separation distance T12 between the first lens and the second lens on the optical axis satisfy 10 < T67/T12 < 26.
9. The optical imaging lens according to claim 1, wherein a separation distance T45 between 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 0.9mm2＜T45×f×tan(HFOV)＜2mm2。
10. The optical imaging lens of claim 1, wherein a central thickness CT6 of the sixth lens element on the optical axis, a central thickness CT5 of the fifth lens element on the optical axis, and a central thickness CT7 of the seventh lens element on the optical axis satisfy 0.7 < CT6/(CT5+ CT7) < 1.
11. The optical imaging lens of claim 1, wherein a distance SAG71 on the optical axis from an intersection point of an object-side surface of the seventh lens and the optical axis to an effective radius vertex of the object-side surface of the seventh lens and a center thickness CT7 of the seventh lens on the optical axis satisfy-4 < SAG71/CT7 < -2.
12. The optical imaging lens of claim 1, 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.
13. The optical imaging lens of claim 12, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis, an aperture value Fno of the optical imaging lens, and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL x Fno/ImgH < 2.1.
14. The optical imaging lens assembly as claimed in any one of claims 1 to 13, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens assembly on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens assembly satisfy TTL/ImgH < 1.4.
15. The optical imaging lens according to any one of claims 1 to 13, wherein a maximum value SD _ max of maximum effective diameters of respective faces from the object side face of the first lens to the image side face of the seventh lens and a minimum value SD _ min of maximum effective diameters of respective faces from the object side face of the first lens to the image side face 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 13, wherein a sum Σ CT of central thicknesses of the first lens to the seventh lens on the optical axis, respectively, and a sum Σ T of separation distances on the optical axis of any adjacent two lenses of the first lens to the seventh lens satisfy 1.5 < Σct/∑ T ≦ 2.5.
17. The optical imaging lens according to any one of claims 1 to 13, wherein an effective focal length f7 of the seventh lens and an effective focal length fi of an ith lens in the optical imaging lens satisfy | f7|/| fi | < 1, where 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 having optical power, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens,
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 of the seventh lens is a concave surface, and the image side surface of the seventh lens is a concave surface;
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 < CT6/(CT5+ CT7) < 1, and
the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens meet f/EPD < 1.6.
19. The optical imaging lens of claim 18, 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.
20. The optical imaging lens of claim 18, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis, an aperture value Fno of the optical imaging lens, and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL x Fno/ImgH < 2.1.
21. The optical imaging lens of claim 20, wherein a distance TTL between an object side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH < 1.4.
22. The optical imaging lens of claim 18, wherein the fourth lens and the fifth lens are separated by a distance T45 on the optical axis, a total effective focal length f of the optical imaging lens, and a maximum half field angle HF of the optical imaging lensOV satisfies 0.9mm2＜T45×f×tan(HFOV)＜2mm2。
23. 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.
24. The optical imaging lens of claim 18, wherein a radius of curvature R14 of the image-side surface of the seventh lens and a radius of curvature R13 of the object-side surface of the seventh lens satisfy 0.4 < (R14+ R13)/(R14-R13) < 0.9.
25. The optical imaging lens of claim 18, wherein a distance SAG71 on the optical axis from an intersection point of the object side surface of the seventh lens and the optical axis to an effective radius vertex of the object side surface of the seventh lens and a center thickness CT7 on the optical axis of the seventh lens satisfy-4 < SAG71/CT7 < -2.
26. The optical imaging lens according to claim 18, wherein a sum Σ CT of central thicknesses of the first lens to the seventh lens on the optical axis respectively and a sum Σ T of separation distances on the optical axis of any adjacent two lenses of the first lens to the seventh lens satisfy 1.5 ∑ CT/∑ T ≦ 2.5.
27. The optical imaging lens of claim 23, wherein the radius of curvature R13 of the object side surface of the seventh lens and the effective focal length f7 of the seventh lens satisfy 0.5 < R13/f7 < 0.8.
28. The optical imaging lens of claim 26, wherein a separation distance T67 between the sixth lens and the seventh lens on the optical axis and a separation distance T12 between the first lens and the second lens on the optical axis satisfy 10 < T67/T12 < 26.
29. The optical imaging lens of claim 26, 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.
30. The optical imaging lens of claim 18, wherein the radius of curvature R13 of the object side surface of the seventh lens and the total effective focal length f of the optical imaging lens satisfy-2.6 < f/R13 < -2.
31. The optical imaging lens of claim 18, wherein the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens satisfy 0.9 < f1/f < 1.2.
32. The optical imaging lens of claim 18, wherein the radius of curvature R1 of the object-side surface of the first lens, the radius of curvature R2 of the image-side surface of the first lens, the radius of curvature R3 of the object-side surface of the second lens, the radius of curvature 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.
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 ith lens in the optical imaging lens satisfy | f7|/| fi | < 1, wherein i ═ 1,2,3,4,5, or 6.
34. The optical imaging lens according to any one of claims 18 to 33, wherein a maximum value SD _ max of maximum effective diameters of respective faces from the object side face of the first lens to the image side face of the seventh lens and a minimum value SD _ min of maximum effective diameters of respective faces from the object side face of the first lens to the image side face of the seventh lens satisfy 2.7 ≦ SD _ max/SD _ min < 3.
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