CN108037579B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN108037579B
CN108037579B CN201810053517.5A CN201810053517A CN108037579B CN 108037579 B CN108037579 B CN 108037579B CN 201810053517 A CN201810053517 A CN 201810053517A CN 108037579 B CN108037579 B CN 108037579B
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lens
optical imaging
image
optical
imaging lens
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CN201810053517.5A
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CN108037579A (en
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周鑫
杨健
闻人建科
卢佳
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN201810053517.5A priority Critical patent/CN108037579B/en
Publication of CN108037579A publication Critical patent/CN108037579A/en
Priority to PCT/CN2018/095984 priority patent/WO2019140875A1/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—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
    • 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

Abstract

The application discloses an optical imaging lens, this optical imaging lens includes along the optical axis from the object side to the image side in proper order: the lens includes 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 and the second lens both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface; the object side surface of the sixth lens is a convex surface; air space is arranged between every two adjacent lenses; the maximum half field angle HFOV of the optical imaging lens meets the requirement that the HFOV is less than 30 degrees.

Description

Optical imaging lens
Technical Field
The present application relates to an optical imaging lens, and more particularly, to a telephoto lens including seven lenses.
Background
Portable electronic devices such as smartphones have become more and more popular due to their good portability. People hope to use portable electronic equipment to meet the requirement of shooting distant scenes in the field. This requires a lens having a telephoto characteristic and also having a small size and a high imaging quality. However, the conventional telephoto lens generally achieves high imaging quality by increasing the number of lens elements, and thus has a large size, and cannot satisfy the requirements of telephoto, miniaturization, and high imaging quality at the same time.
Disclosure of Invention
The present application provides an optical imaging lens, such as a telephoto lens, applicable to portable electronic products, which may solve at least or partially at least one of the above-mentioned disadvantages of the related art.
In one aspect, the present application discloses an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes 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 and the second lens can both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the object side surface of the sixth lens element may be convex. Wherein, air space is arranged between every two adjacent lenses; the maximum half field angle HFOV of the optical imaging lens can satisfy the HFOV < 30 degrees.
In one embodiment, the effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy 1.0 < f1/f2 < 2.0.
In one embodiment, the third lens may have a negative power, and the effective focal length f5 of the fifth lens and the effective focal length f3 of the third lens may satisfy 0.8 < f5/f3 < 2.4.
In one embodiment, the total effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface of the fifth lens can satisfy 1.0 < f/R10 < 3.0.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R6 of the image-side surface of the third lens may satisfy 0.8 < R3/R6 < 2.0.
In one embodiment, the object-side surface of the first lens element may be convex, and the total effective focal length f of the optical imaging lens and the radius of curvature R1 of the object-side surface of the first lens element may satisfy 3.5 < f/R1 < 4.2.
In one embodiment, 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 may satisfy 0.5 < R14/R13 < 2.5.
In one embodiment, the combined focal power of the fifth lens, the sixth lens and the seventh lens may be a negative focal power, and the combined focal length f567 thereof and the total effective focal length f of the optical imaging lens may satisfy-2.5 < f567/f < -1.0.
In one embodiment, the maximum half field angle HFOV of the optical imaging lens may satisfy HFOV < 30 °.
In one embodiment, the distance TTL between the center of the object side surface of the first lens and the imaging surface of the optical imaging lens on the optical axis and the total effective focal length f of the optical imaging lens can satisfy TTL/f ≦ 1.0.
In one embodiment, a sum Σ CT of central thicknesses on the optical axis of the first lens to the seventh lens and a sum Σ AT of separation distances on the optical axis of any adjacent two lenses of the first lens to the seventh lens, respectively, may satisfy Σ CT/Σ AT < 2.0.
In one embodiment, the central thickness CT6 of the sixth lens element on the optical axis and the central thickness CT7 of the seventh lens element on the optical axis satisfy 2.0 < CT6/CT7 < 4.0.
In one embodiment, a separation distance T45 between the fourth lens and the fifth lens on the optical axis and a separation distance T34 between the third lens and the fourth lens on the optical axis may satisfy 3.0 < T45/T34 < 3.6.
In one embodiment, the combined optical power of the first lens, the second lens, the third lens, and the fourth lens may be a positive optical power; and the combined focal length f1234 of the first lens, the second lens, the third lens and the fourth lens, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis can satisfy 3.0 < f1234/(CT1+ CT2+ CT3+ CT4) < 4.0.
In another aspect, the present application further discloses an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes 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 and the second lens can both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the object side surface of the sixth lens element may be convex. The combined focal length f1234 of the first lens, the second lens, the third lens and the fourth lens, the central thickness CT1 of the first lens on the optical axis, the central thickness CT2 of the second lens on the optical axis, the central thickness CT3 of the third lens on the optical axis and the central thickness CT4 of the fourth lens on the optical axis can satisfy 3.0 < f1234/(CT1+ CT2+ CT3+ CT4) < 4.0.
In another aspect, the present application further discloses an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes 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 and the second lens can both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the object side surface of the sixth lens element may be convex. The combined focal length f567 of the fifth lens, the sixth lens and the seventh lens and the total effective focal length f of the optical imaging lens can meet the requirement that-2.5 < f567/f < -1.0.
In another aspect, the present application further discloses an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes 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 and the second lens can both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the object side surface of the sixth lens element may be convex. The effective focal length f1 of the first lens and the effective focal length f2 of the second lens can satisfy 1.0 < f1/f2 < 2.0.
In another aspect, the present application further discloses an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes 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 and the second lens can both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the object side surface of the sixth lens element may be convex. The total effective focal length f of the optical imaging lens and the curvature radius R10 of the image side surface of the fifth lens can satisfy 1.0 < f/R10 < 3.0.
In another aspect, the present application further discloses an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes 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 and the second lens can both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the object side surface of the sixth lens element may be convex. Wherein a separation distance T45 between the fourth lens and the fifth lens on the optical axis and a separation distance T34 between the third lens and the fourth lens on the optical axis satisfy 3.0 < T45/T34 < 3.6.
In another aspect, the present application further discloses an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes 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 and the second lens can both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the object side surface of the sixth lens element may be convex. The total effective focal length f of the optical imaging lens and the curvature radius R1 of the object side surface of the first lens can satisfy 3.5 < f/R1 < 4.2.
In another aspect, the present application further discloses an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the lens includes 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 and the second lens can both have positive focal power; the third lens, the fourth lens, the sixth lens and the seventh lens all have positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the object side surface of the sixth lens element may be convex. The curvature radius R14 of the image side surface of the seventh lens and the curvature radius R13 of the object side surface of the seventh lens can satisfy 0.5 < R14/R13 < 2.5.
The optical imaging lens adopts a plurality of lenses (for example, seven lenses), and has at least one beneficial effect of miniaturization, long focus, high imaging quality and the like 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.
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 2D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic structural view showing an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 is a schematic structural view showing an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 is a schematic structural view showing an optical imaging lens according to embodiment 4 of the present application;
fig. 8A to 8D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 is a schematic structural view showing an optical imaging lens according to embodiment 5 of the present application;
fig. 10A to 10D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 5;
fig. 11 is a schematic structural view showing an optical imaging lens according to embodiment 6 of the present application;
fig. 12A to 12D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application;
fig. 14A to 14D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 7;
fig. 15 is a schematic structural view showing an optical imaging lens according to embodiment 8 of the present application;
fig. 16A to 16D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of 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 18D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 9;
fig. 19 is a schematic structural view showing an optical imaging lens according to embodiment 10 of the present application;
fig. 20A to 20D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of embodiment 10;
fig. 21 is a schematic structural view showing an optical imaging lens according to embodiment 11 of the present application;
fig. 22A to 22D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 11;
fig. 23 is a schematic structural view showing an optical imaging lens according to embodiment 12 of the present application;
fig. 24A to 24D show an on-axis chromatic aberration curve, an astigmatic curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of an optical imaging lens of embodiment 12;
fig. 25 is a schematic structural view showing an optical imaging lens according to embodiment 13 of the present application;
fig. 26A to 26D show an axial chromatic aberration curve, an astigmatism curve, a distortion curve, and a chromatic aberration of magnification curve, respectively, of the optical imaging lens of example 13.
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, and the surface of each lens closest to the image plane is called the image side surface.
It will be further understood that the terms "comprises," "comprising," "has," "having," "includes" and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Moreover, when a statement such as "at least one of" appears after a list of listed features, the entirety of the listed features is modified rather than modifying individual elements in the list. Furthermore, when describing embodiments of the present application, the use of "may" mean "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
The features, principles, and other aspects of the present application are described in detail below.
The 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, and an air space is formed between every two adjacent lenses.
In an exemplary embodiment, the first lens may have a positive optical power; the second lens may have a positive optical power; the third lens has positive focal power or negative focal power; the fourth lens has positive focal power or negative focal power; the fifth lens can have negative focal power, and the image side surface of the fifth lens can be concave; the sixth lens has positive focal power or negative focal power, and the object side surface of the sixth lens can be a convex surface; the seventh lens has positive power or negative power.
In an exemplary embodiment, the object-side surface of the first lens may be convex and the image-side surface may be concave.
In an exemplary embodiment, the object side surface of the second lens may be convex.
In an exemplary embodiment, the third lens may have a negative optical power, and the image-side surface thereof may be concave.
In an exemplary embodiment, the object-side surface of the fourth lens element may be convex and the image-side surface may be concave.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression HFOV < 30 °, wherein the maximum half field angle of the HFOV optical imaging lens. More specifically, the HFOV further can satisfy HFOV < 25 °, for example, 19.0 ° ≦ HFOV ≦ 20.5 °. The maximum half field angle of the imaging lens is reasonably controlled, so that the optical system meets the long-focus characteristic and has better capability of balancing aberration.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression TTL/f ≦ 1.0, where TTL is a distance on an optical axis from a center of an object-side surface of the first lens element to an imaging surface of the optical imaging lens, and f is a total effective focal length of the optical imaging lens. More specifically, TTL and f can further satisfy 0.91 ≦ TTL/f ≦ 0.98. By reasonably controlling TTL and f, the long-focus characteristic of the lens can be satisfied, and the miniaturization of the lens can be kept.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < f1/f2 < 2.0, where f1 is an effective focal length of the first lens and f2 is an effective focal length of the second lens. More specifically, f1 and f2 can further satisfy 1.1 < f1/f2 < 1.5, for example, 1.21. ltoreq. f1/f 2. ltoreq.1.34. The optical system has better capacity of balancing field curvature by reasonably selecting the effective focal lengths of the first lens and the second lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.8 < f5/f3 < 2.4, where f5 is an effective focal length of the fifth lens and f3 is an effective focal length of the third lens. More specifically, f5 and f3 can further satisfy 0.88. ltoreq. f5/f 3. ltoreq.2.21. The effective focal lengths of the fifth lens and the third lens are reasonably selected, so that the optical system has better capability of balancing astigmatism.
The combined focal power of the first lens, the second lens, the third lens and the fourth lens can be positive focal power. In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.0 < f1234/(CT1+ CT2+ CT3+ CT4) < 4.0, where f1234 is a combined focal length of the first lens, the second lens, the third lens and the fourth lens, CT1 is a central thickness of the first lens on the optical axis, CT2 is a central thickness of the second lens on the optical axis, CT3 is a central thickness of the third lens on the optical axis, and CT4 is a central thickness of the fourth lens on the optical axis. More specifically, f1234, CT1, CT2, CT3 and CT4 may further satisfy 3.4 < f1234/(CT1+ CT2+ CT3+ CT4) < 3.9, for example, 3.53. ltoreq. f1234/(CT1+ CT2+ CT3+ CT4) ≦ 3.79. By reasonably controlling the ratio of f1234, CT1, CT2, CT3 and CT4, the optical system can meet the requirement of miniaturization.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < f/R10 < 3.0, where f is a total effective focal length of the optical imaging lens, and R10 is a radius of curvature of an image side surface of the fifth lens. More specifically, f and R10 further satisfy 1.17. ltoreq. f/R10. ltoreq.2.86. The curvature radius of the image side surface of the fifth lens is reasonably set, so that the optical system has better astigmatism balancing capability.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy a conditional expression Σ CT/∑ AT < 2.0, where Σ CT is a sum of central thicknesses of the first lens to the seventh lens on the optical axis, respectively, and Σ AT 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 AT further can satisfy Σ CT/Σ AT < 1.5, e.g., 1.19 ≦ Σ CT/Σ AT ≦ 1.38. The ratio of sigma CT to sigma AT is reasonably controlled, which is beneficial to ensuring the miniaturization of the lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.8 < R3/R6 < 2.0, where R3 is a radius of curvature of an object-side surface of the second lens and R6 is a radius of curvature of an image-side surface of the third lens. More specifically, R3 and R6 may further satisfy 0.9 < R3/R6 < 1.4, for example, 1.04. ltoreq. R3/R6. ltoreq.1.20. The curvature radius of the object side surface of the second lens and the curvature radius of the image side surface of the third lens are reasonably controlled, so that the optical system has better capacity of balancing field curvature and distortion.
The combined power of the fifth lens, the sixth lens, and the seventh lens may be a negative power. In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-2.5 < f567/f < -1.0, where f567 is a combined focal length of the fifth lens, the sixth lens, and the seventh lens, and f is a total effective focal length of the optical imaging lens. More specifically, f567 and f further satisfy-2.2 < f567/f < -1.2, for example, -2.01. ltoreq. f 567/f.ltoreq-1.31. By reasonably selecting the combined focal length of the fifth lens, the sixth lens and the seventh lens, the deflection angle of light rays can be reduced, and the sensitivity of the optical system is reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.0 < T45/T34 < 3.6, where T45 is a separation distance of the fourth lens and the fifth lens on the optical axis, and T34 is a separation distance of the third lens and the fourth lens on the optical axis. More specifically, T45 and T34 can further satisfy 3.17 ≦ T45/T34 ≦ 3.42. The optical system has better capability of balancing dispersion and distortion by reasonably controlling the ratio of T45 to T34.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 3.5 < f/R1 < 4.2, where f is a total effective focal length of the optical imaging lens, and R1 is a radius of curvature of an object-side surface of the first lens. More specifically, f and R1 further satisfy f/R1 ≦ 4.00. The curvature radius of the object side surface of the first lens is reasonably set, so that aberration can be balanced easily, and the optical performance of the optical system is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.0 < CT6/CT7 < 4.0, where CT6 is a central thickness of the sixth lens element on the optical axis, and CT7 is a central thickness of the seventh lens element on the optical axis. More specifically, CT6 and CT7 further satisfy 2.22 ≦ CT6/CT7 ≦ 3.65. The rear end of the optical system can be effectively reduced by reasonably controlling the ratio of the CT6 to the CT 7.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5 < R14/R13 < 2.5, 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 0.55 < R14/R13 < 2.20, for example, 0.61. ltoreq. R14/R13. ltoreq.2.06. The curvature radii of the image side surface and the object side surface of the seventh lens are reasonably set, so that the optical system can be better matched with the chief ray angle of the chip.
In an exemplary embodiment, the optical imaging lens may further include at least one stop to improve the imaging quality of the lens. For example, 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 a 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.
By the optical imaging lens with the configuration, a small depth of field and a large magnification are provided, a larger image can be shot under the condition of the same distance, and the optical imaging lens is suitable for shooting a long-distance object. Meanwhile, if the lens is matched with a wide-angle lens for use, an imaging effect with high magnification and high quality can be obtained under the condition of automatic focusing. More details can be acquired at the same shooting distance, and the method is suitable for shooting objects at a distance.
In the embodiment of the present application, at least one of the mirror surfaces of each lens is an aspherical mirror surface. The aspheric lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has better curvature radius characteristics, and has advantages of improving distortion aberration and improving astigmatic aberration. After the aspheric lens is adopted, the aberration generated during imaging can be eliminated as much as possible, thereby improving the imaging quality.
However, it will be appreciated by those skilled in the art that the number of lenses constituting an optical imaging lens may be varied to achieve the various results and advantages described in the present specification without departing from the claimed subject matter. For example, although seven lenses are exemplified in the embodiment, the optical imaging lens is not limited to include seven lenses. The optical imaging lens may also include other numbers of lenses, if desired.
Specific examples of an optical imaging lens applicable to the above-described embodiments are further described below with reference to the drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic structural diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has 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 concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 1 shows 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 BDA0001553038110000121
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 BDA0001553038110000122
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 14、A6、A8、A10、A12、A14、A16、A18And A20。
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.2930E-03 1.3810E-03 5.7700E-05 -5.3300E-03 1.6273E-02 -1.8920E-02 1.1361E-02 -3.4000E-03 3.8400E-04
S2 1.2690E-03 1.9207E-02 -7.8170E-02 1.2996E-01 -5.6560E-02 -8.0160E-02 1.1695E-01 -5.7640E-02 1.0239E-02
S3 1.5390E-03 3.5279E-02 -1.5004E-01 3.1287E-01 -3.5149E-01 2.1216E-01 -6.1300E-02 4.6210E-03 7.7300E-04
S4 -1.5400E-03 8.4789E-02 -2.8614E-01 6.9223E-01 -1.1598E+00 1.2653E+00 -8.6099E-01 3.3476E-01 -5.6900E-02
S5 -5.2720E-02 2.2149E-01 -4.9854E-01 1.0737E+00 -1.9067E+00 2.3878E+00 -1.9218E+00 8.8731E-01 -1.7876E-01
S6 -7.3510E-02 2.3490E-01 -4.6850E-01 1.2179E+00 -2.7164E+00 4.3970E+00 -4.5949E+00 2.7375E+00 -7.0873E-01
S7 -3.6790E-02 7.6031E-02 -1.4290E-02 7.0470E-03 4.8459E-02 -1.0659E-01 9.7188E-02 -4.7960E-02 1.0288E-02
S8 6.2510E-03 3.4854E-02 2.7601E-02 -1.1297E-01 2.7098E-01 -3.7461E-01 3.0045E-01 -1.3203E-01 2.4494E-02
S9 -1.1785E-01 1.1076E-01 -1.6500E-01 1.7280E-01 -1.1448E-01 4.4005E-02 -7.6800E-03 -1.3000E-04 1.5400E-04
S10 -4.7370E-02 7.5554E-02 -1.0889E-01 9.4522E-02 -5.1370E-02 1.7568E-02 -3.6500E-03 4.2100E-04 -2.1000E-05
S11 -5.0610E-02 7.4504E-02 -7.4240E-02 4.7374E-02 -1.9660E-02 5.2980E-03 -9.0000E-04 8.6300E-05 -3.6000E-06
S12 -6.1180E-02 2.4582E-02 -1.1330E-02 4.8780E-03 -1.7700E-03 5.3900E-04 -1.1000E-04 1.2400E-05 -5.2000E-07
S13 -5.9460E-02 3.5765E-02 -1.6220E-02 6.2700E-03 -2.1200E-03 5.7700E-04 -1.1000E-04 1.1100E-05 -4.9000E-07
S14 -4.8390E-02 2.8888E-02 -1.2500E-02 4.1490E-03 -1.1600E-03 2.5400E-04 -3.8000E-05 3.3400E-06 -1.3000E-07
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 center of the object-side surface S1 of the first lens E1 to the imaging surface S17), and the maximum half field angle HFOV in embodiment 1.
f1(mm) 6.76 f6(mm) 7.14
f2(mm) 5.60 f7(mm) -48.12
f3(mm) -4.88 f(mm) 6.72
f4(mm) 999.88 TTL(mm) 6.48
f5(mm) -4.70 HFOV(°) 20.0
TABLE 3
The optical imaging lens in embodiment 1 satisfies:
TTL/f is 0.96, where TTL is an axial distance from the center of the object-side surface S1 of the first lens element E1 to the imaging surface S17, and f is a total effective focal length of the optical imaging lens;
f1/f2 is 1.21, wherein f1 is the effective focal length of the first lens E1, and f2 is the effective focal length of the second lens E2;
f5/f3 is 0.96, wherein f5 is the effective focal length of the fifth lens E5, and f3 is the effective focal length of the third lens E3;
f1234/(CT1+ CT2+ CT3+ CT4) ═ 3.69, where f1234 is the combined focal length of the first lens E1, the second lens E2, the third lens E3 and the fourth lens E4, CT1 is the central thickness of the first lens E1 on the optical axis, CT2 is the central thickness of the second lens E2 on the optical axis, CT3 is the central thickness of the third lens E3 on the optical axis, and CT4 is the central thickness of the fourth lens E4 on the optical axis;
f/R10 is 2.53, where f is the total effective focal length of the optical imaging lens, and R10 is the radius of curvature of the image-side surface S10 of the fifth lens E5;
Σ CT/Σ AT is 1.31, where Σ CT is the sum of the central thicknesses of the first lens E1 to the seventh lens E7 on the optical axis, respectively, and Σ AT is the sum of the separation distances of any two adjacent lenses in the first lens E1 to the seventh lens E7 on the optical axis;
R3/R6 is 1.20, where R3 is the radius of curvature of the object-side surface S3 of the second lens E2, and R6 is the radius of curvature of the image-side surface S6 of the third lens E3;
f567/f is-1.59, wherein f567 is a combined focal length of the fifth lens E5, the sixth lens E6 and the seventh lens E7, and f is a total effective focal length of the optical imaging lens;
T45/T34 is 3.31, where T45 is the distance between the fourth lens E4 and the fifth lens E5 on the optical axis, and T34 is the distance between the third lens E3 and the fourth lens E4 on the optical axis;
f/R1 is 3.77, where f is the total effective focal length of the optical imaging lens, and R1 is the radius of curvature of the object-side surface S1 of the first lens E1;
CT6/CT7 is 2.61, where CT6 is the central thickness of the sixth lens E6 on the optical axis, and CT7 is the central thickness of the seventh lens E7 on the optical axis;
R14/R13 is 0.79, where R14 is the radius of curvature of the image-side surface S14 of the seventh lens E7, and R13 is the radius of curvature of the object-side surface S13 of the seventh lens E7.
Fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focal points of light rays of different wavelengths after passing through the lens. Fig. 2B shows an astigmatism curve representing a meridional field curvature and a sagittal field curvature of the optical imaging lens of embodiment 1. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents the distortion magnitude values in the case of different angles of view. Fig. 2D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 1, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 2A to 2D, the optical imaging lens according to embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of parts similar to those of embodiment 1 will be omitted for the sake of brevity. Fig. 3 shows a schematic structural diagram of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000151
Figure BDA0001553038110000161
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 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.1630E-03 1.9460E-03 -1.6600E-03 -1.9100E-03 1.2538E-02 -1.6930E-02 1.1057E-02 -3.5400E-03 4.3400E-04
S2 1.1600E-03 2.0693E-02 -9.2830E-02 1.8553E-01 -1.5719E-01 2.1024E-02 5.8488E-02 -3.9450E-02 7.8830E-03
S3 2.0370E-03 3.3183E-02 -1.6033E-01 3.6792E-01 -4.5719E-01 3.2030E-01 -1.2392E-01 2.3968E-02 -1.7000E-03
S4 1.5290E-03 7.2370E-02 -2.7594E-01 7.2396E-01 -1.2680E+00 1.4195E+00 -9.8067E-01 3.8406E-01 -6.5370E-02
S5 -4.9120E-02 2.0676E-01 -4.8729E-01 1.1354E+00 -2.1474E+00 2.8008E+00 -2.3090E+00 1.0813E+00 -2.1962E-01
S6 -7.1900E-02 2.2742E-01 -4.5493E-01 1.2309E+00 -2.8307E+00 4.6372E+00 -4.8515E+00 2.8899E+00 -7.4834E-01
S7 -4.1020E-02 8.7565E-02 -1.9350E-02 2.4700E-04 5.0215E-02 -1.0652E-01 1.0531E-01 -5.5790E-02 1.2288E-02
S8 3.8190E-03 4.7280E-02 4.9650E-03 -5.5870E-02 1.4018E-01 -1.9763E-01 1.5879E-01 -6.9490E-02 1.2721E-02
S9 -1.0591E-01 8.1052E-02 -1.1789E-01 1.2558E-01 -8.6640E-02 3.7089E-02 -9.0900E-03 1.0920E-03 -4.6000E-05
S10 -4.2510E-02 5.4194E-02 -7.6680E-02 6.4510E-02 -3.3560E-02 1.0905E-02 -2.1500E-03 2.3400E-04 -1.1000E-05
S11 -4.4870E-02 6.3534E-02 -6.3180E-02 4.0541E-02 -1.7070E-02 4.7130E-03 -8.2000E-04 8.3200E-05 -3.7000E-06
S12 -7.4730E-02 3.7519E-02 -2.4070E-02 1.4042E-02 -6.0100E-03 1.7490E-03 -3.2000E-04 3.2600E-05 -1.4000E-06
S13 -5.0550E-02 2.3502E-02 -9.3100E-03 4.1650E-03 -1.8200E-03 5.7200E-04 -1.1000E-04 1.1300E-05 -4.8000E-07
S14 -5.1210E-02 3.0987E-02 -1.3600E-02 4.5490E-03 -1.2400E-03 2.6100E-04 -3.7000E-05 3.0600E-06 -1.1000E-07
TABLE 5
Table 6 gives the effective focal lengths f1 to f7, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field angle HFOV of the respective lenses in embodiment 2.
Figure BDA0001553038110000162
Figure BDA0001553038110000171
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 the distortion magnitude values in the case of different angles of view. Fig. 4D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 2, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 4A to 4D, the optical imaging lens according to embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic structural diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a 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 concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000181
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.
Figure BDA0001553038110000182
Figure BDA0001553038110000191
TABLE 8
Table 9 gives the effective focal lengths f1 to f7, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field angle HFOV of the respective lenses in embodiment 3.
f1(mm) 6.66 f6(mm) 7.91
f2(mm) 5.49 f7(mm) 624.49
f3(mm) -4.90 f(mm) 6.73
f4(mm) -64.90 TTL(mm) 6.48
f5(mm) -4.80 HFOV(°) 20.0
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 the distortion magnitude values in the case of different angles of view. Fig. 6D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 3, which represents a deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 6A to 6D, the optical imaging lens according to embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic structural diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a 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 concave image-side surface S12. The seventh lens element E7 has positive power, and has a concave object-side surface S13 and a convex image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 10 shows the surface type, radius of curvature, thickness, material, and conic coefficient of each lens of the optical imaging lens of example 4, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0001553038110000201
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.
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.5750E-03 1.9450E-03 -3.3900E-03 4.4000E-03 -9.4000E-04 -1.2200E-03 8.4800E-04 -1.0000E-04 -2.9000E-05
S2 6.1190E-03 -1.1970E-02 3.9620E-02 -1.2472E-01 2.7226E-01 -3.3667E-01 2.3282E-01 -8.4620E-02 1.2601E-02
S3 4.0410E-03 1.1936E-02 -6.9860E-02 1.7382E-01 -2.2384E-01 1.6240E-01 -6.7350E-02 1.5254E-02 -1.5300E-03
S4 -1.4400E-03 7.8107E-02 -2.8093E-01 7.5121E-01 -1.3727E+00 1.6042E+00 -1.1419E+00 4.5125E-01 -7.5930E-02
S5 -4.8280E-02 2.0427E-01 -5.5886E-01 1.5064E+00 -3.0805E+00 4.2282E+00 -3.6121E+00 1.7217E+00 -3.4931E-01
S6 -6.0990E-02 1.5276E-01 -1.4131E-01 2.2067E-01 -6.5915E-01 1.8430E+00 -2.7690E+00 2.0544E+00 -6.0896E-01
S7 -3.2650E-02 7.3083E-02 -1.4740E-02 -1.2276E-01 6.6622E-01 -1.3516E+00 1.4377E+00 -8.1125E-01 1.9113E-01
S8 1.2798E-02 1.4332E-02 1.7702E-01 -7.2202E-01 1.7587E+00 -2.5642E+00 2.2272E+00 -1.0720E+00 2.2023E-01
S9 -9.0980E-02 2.0399E-02 3.1675E-02 -1.5106E-01 2.2921E-01 -1.8143E-01 8.1252E-02 -1.9500E-02 1.9460E-03
S10 -5.5200E-02 1.0901E-01 -1.5100E-01 1.2138E-01 -6.1150E-02 1.9607E-02 -3.8900E-03 4.3500E-04 -2.1000E-05
S11 -7.3500E-02 1.1525E-01 -1.1120E-01 7.2516E-02 -3.2290E-02 9.5930E-03 -1.8100E-03 1.9500E-04 -9.2000E-06
S12 -5.5790E-02 3.5354E-02 -3.5660E-02 3.0086E-02 -1.6280E-02 5.4440E-03 -1.0900E-03 1.1900E-04 -5.4000E-06
S13 -5.2720E-02 2.8676E-02 -1.1990E-02 5.3550E-03 -2.5000E-03 8.4400E-04 -1.7000E-04 1.7400E-05 -7.2000E-07
S14 -6.2510E-02 3.5065E-02 -9.2700E-03 -2.3000E-03 3.1980E-03 -1.3200E-03 2.8100E-04 -3.1000E-05 1.4400E-06
TABLE 11
Table 12 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, and the maximum half field angle HFOV in embodiment 4.
f1(mm) 7.03 f6(mm) 11.84
f2(mm) 5.56 f7(mm) 986.17
f3(mm) -5.26 f(mm) 7.09
f4(mm) -83.48 TTL(mm) 6.48
f5(mm) -5.12 HFOV(°) 19.0
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 the distortion magnitude values in the case of different angles of view. Fig. 8D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 4, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 8A to 8D, the optical imaging lens according to embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic structural diagram of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, the optical imaging lens 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
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, wherein the unit of the radius of curvature and the thickness are both millimeters (mm).
Figure BDA0001553038110000221
Figure BDA0001553038110000231
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 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.2980E-03 3.4120E-03 -1.0340E-02 2.3346E-02 -2.9420E-02 2.4326E-02 -1.2740E-02 3.9060E-03 -5.4000E-04
S2 2.6320E-03 1.2966E-02 -7.4540E-02 1.7685E-01 -2.0079E-01 1.1157E-01 -1.7640E-02 -8.9700E-03 3.1020E-03
S3 3.3420E-03 2.0225E-02 -1.1129E-01 2.7660E-01 -3.6756E-01 2.7766E-01 -1.1890E-01 2.6886E-02 -2.5100E-03
S4 1.0710E-03 6.2789E-02 -2.0514E-01 5.1191E-01 -9.0141E-01 1.0276E+00 -7.2483E-01 2.9079E-01 -5.0930E-02
S5 -4.9170E-02 1.9241E-01 -3.7333E-01 7.0518E-01 -1.1940E+00 1.4891E+00 -1.2049E+00 5.5960E-01 -1.1364E-01
S6 -7.0980E-02 2.1225E-01 -3.2941E-01 6.9005E-01 -1.4135E+00 2.3056E+00 -2.4885E+00 1.5403E+00 -4.1619E-01
S7 -3.9850E-02 7.9876E-02 2.8747E-02 -1.6115E-01 3.8571E-01 -5.4743E-01 4.6440E-01 -2.2271E-01 4.6116E-02
S8 4.6770E-03 4.1539E-02 4.1500E-02 -1.7120E-01 3.6877E-01 -4.8472E-01 3.8217E-01 -1.6820E-01 3.1569E-02
S9 -9.7240E-02 7.9681E-02 -1.0570E-01 9.3077E-02 -4.8110E-02 1.1959E-02 2.6700E-04 -7.7000E-04 1.1000E-04
S10 -5.1270E-02 8.1744E-02 -1.0635E-01 8.2274E-02 -3.9690E-02 1.1933E-02 -2.1500E-03 2.0900E-04 -8.4000E-06
S11 -5.2580E-02 7.8962E-02 -7.8540E-02 5.1147E-02 -2.1920E-02 6.1140E-03 -1.0700E-03 1.0600E-04 -4.6000E-06
S12 -6.3970E-02 3.3301E-02 -2.2510E-02 1.4269E-02 -6.4900E-03 1.9470E-03 -3.6000E-04 3.5900E-05 -1.5000E-06
S13 -5.8100E-02 3.4256E-02 -1.9300E-02 1.0461E-02 -4.5600E-03 1.3620E-03 -2.5000E-04 2.5200E-05 -1.1000E-06
S14 -5.2360E-02 2.7913E-02 -1.1580E-02 3.7030E-03 -9.6000E-04 1.9500E-04 -2.8000E-05 2.3500E-06 -8.8000E-08
TABLE 14
Table 15 gives the effective focal lengths f1 to f7, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field angle HFOV of each lens in embodiment 5.
f1(mm) 6.88 f6(mm) 7.36
f2(mm) 5.24 f7(mm) -43.91
f3(mm) -4.87 f(mm) 6.56
f4(mm) -53.78 TTL(mm) 6.43
f5(mm) -5.28 HFOV(°) 20.5
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 the distortion magnitude values in the case of different angles of view. Fig. 10D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 5, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens according to embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural view of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
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 BDA0001553038110000241
Figure BDA0001553038110000251
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 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.2020E-03 2.2910E-03 -3.4500E-03 2.8190E-03 4.7000E-03 -8.8500E-03 6.1370E-03 -1.9200E-03 2.1200E-04
S2 1.1680E-03 2.1061E-02 -9.1320E-02 1.7180E-01 -1.3037E-01 -3.1200E-03 6.9415E-02 -4.1670E-02 7.9990E-03
S3 2.2550E-03 3.5114E-02 -1.5660E-01 3.3737E-01 -3.9245E-01 2.5086E-01 -8.2740E-02 1.1118E-02 -5.8000E-05
S4 -2.4200E-03 8.6298E-02 -3.0135E-01 7.5264E-01 -1.2844E+00 1.4180E+00 -9.7338E-01 3.8116E-01 -6.5210E-02
S5 -5.3630E-02 2.2198E-01 -5.1461E-01 1.1661E+00 -2.1545E+00 2.7688E+00 -2.2653E+00 1.0579E+00 -2.1503E-01
S6 -7.2330E-02 2.3110E-01 -4.5661E-01 1.2102E+00 -2.7528E+00 4.5219E+00 -4.7775E+00 2.8805E+00 -7.5704E-01
S7 -3.7460E-02 7.6795E-02 6.5620E-03 -8.1320E-02 2.5449E-01 -4.1782E-01 3.8984E-01 -2.0137E-01 4.4199E-02
S8 6.9880E-03 3.7304E-02 3.6708E-02 -1.6150E-01 3.8538E-01 -5.4756E-01 4.5937E-01 -2.1253E-01 4.1567E-02
S9 -1.0987E-01 9.9745E-02 -1.4090E-01 1.3792E-01 -8.5020E-02 3.0807E-02 -5.4100E-03 1.3800E-04 4.9900E-05
S10 -4.9300E-02 7.8384E-02 -1.0705E-01 8.6927E-02 -4.4040E-02 1.3997E-02 -2.6900E-03 2.8500E-04 -1.3000E-05
S11 -5.0510E-02 7.4006E-02 -7.2410E-02 4.5196E-02 -1.8400E-02 4.8880E-03 -8.2000E-04 7.8800E-05 -3.3000E-06
S12 -6.4670E-02 2.7695E-02 -1.3730E-02 6.5320E-03 -2.5700E-03 7.7300E-04 -1.5000E-04 1.6500E-05 -7.0000E-07
S13 -5.7210E-02 3.3529E-02 -1.5100E-02 5.8460E-03 -1.9700E-03 5.2700E-04 -9.5000E-05 9.6000E-06 -4.1000E-07
S14 -4.9350E-02 2.8309E-02 -1.2090E-02 3.9270E-03 -1.0500E-03 2.1800E-04 -3.1000E-05 2.6300E-06 -9.6000E-08
TABLE 17
Table 18 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, and the maximum half field angle HFOV in embodiment 6.
Figure BDA0001553038110000252
Figure BDA0001553038110000261
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 the distortion magnitude values in the case of different angles of view. Fig. 12D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 6, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens according to embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 is a schematic structural view showing an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, the optical imaging lens 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a concave object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a 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 concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000271
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.
Figure BDA0001553038110000272
Figure BDA0001553038110000281
Watch 20
Table 21 gives 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, and a maximum half field angle HFOV in embodiment 7.
f1(mm) 6.72 f6(mm) 9.50
f2(mm) 5.01 f7(mm) 29.56
f3(mm) -4.68 f(mm) 6.72
f4(mm) -35.91 TTL(mm) 6.48
f5(mm) -4.78 HFOV(°) 20.0
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 the distortion magnitude values in the case of different angles of view. Fig. 14D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 7, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens according to embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 16D. Fig. 15 shows a schematic structural diagram of an optical imaging lens according to embodiment 8 of the present application.
As shown in fig. 15, the optical imaging lens 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000291
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 element E1 through the seventh lens element 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.
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.3420E-03 2.5150E-03 -4.5900E-03 4.9470E-03 2.3000E-03 -7.2800E-03 5.5500E-03 -1.8200E-03 2.0500E-04
S2 1.6240E-03 2.2254E-02 -1.0051E-01 1.9571E-01 -1.6270E-01 2.2138E-02 5.7875E-02 -3.8840E-02 7.7230E-03
S3 1.7270E-03 3.6598E-02 -1.6791E-01 3.7189E-01 -4.4629E-01 3.0009E-01 -1.0955E-01 1.9175E-02 -1.0800E-03
S4 -1.2400E-03 8.4055E-02 -2.9988E-01 7.6037E-01 -1.3085E+00 1.4501E+00 -9.9600E-01 3.8891E-01 -6.6170E-02
S5 -5.2050E-02 2.1547E-01 -5.0088E-01 1.1393E+00 -2.1126E+00 2.7257E+00 -2.2363E+00 1.0451E+00 -2.1220E-01
S6 -7.1950E-02 2.2570E-01 -4.3663E-01 1.1424E+00 -2.5688E+00 4.1908E+00 -4.3933E+00 2.6240E+00 -6.8242E-01
S7 -3.6890E-02 7.4422E-02 2.4012E-02 -1.4511E-01 3.9107E-01 -6.0093E-01 5.4115E-01 -2.7235E-01 5.8634E-02
S8 7.2940E-03 3.6998E-02 4.7104E-02 -1.9532E-01 4.5016E-01 -6.2540E-01 5.1768E-01 -2.3773E-01 4.6302E-02
S9 -1.1195E-01 1.0631E-01 -1.5327E-01 1.5248E-01 -9.6660E-02 3.7273E-02 -7.8000E-03 6.5700E-04 1.4800E-07
S10 -5.2990E-02 8.9198E-02 -1.1985E-01 9.5600E-02 -4.7740E-02 1.5011E-02 -2.8700E-03 3.0300E-04 -1.4000E-05
S11 -5.5860E-02 8.5494E-02 -8.3640E-02 5.2043E-02 -2.1130E-02 5.5940E-03 -9.3000E-04 8.9200E-05 -3.7000E-06
S12 -6.3590E-02 2.6610E-02 -1.1560E-02 4.6120E-03 -1.5900E-03 4.6600E-04 -9.6000E-05 1.0900E-05 -4.8000E-07
S13 -5.4810E-02 3.1314E-02 -1.3420E-02 4.8480E-03 -1.5500E-03 4.0700E-04 -7.3000E-05 7.5300E-06 -3.2000E-07
S14 -4.8650E-02 2.7717E-02 -1.1980E-02 3.9850E-03 -1.0800E-03 2.2700E-04 -3.3000E-05 2.7400E-06 -1.0000E-07
TABLE 23
Table 24 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, and the maximum half field angle HFOV in embodiment 8.
f1(mm) 6.64 f6(mm) 8.00
f2(mm) 5.44 f7(mm) 733.11
f3(mm) -4.86 f(mm) 6.72
f4(mm) -55.25 TTL(mm) 6.48
f5(mm) -4.89 HFOV(°) 20.0
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 the distortion magnitude values in the case of different angles of view. Fig. 16D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 8, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens according to embodiment 8 can achieve good imaging quality.
Example 9
An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000311
Figure BDA0001553038110000321
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 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.2110E-03 1.9760E-03 -2.0000E-03 -1.1400E-03 1.0995E-02 -1.4900E-02 9.5710E-03 -2.9800E-03 3.4900E-04
S2 8.3400E-04 2.3588E-02 -9.8980E-02 1.8635E-01 -1.4517E-01 3.8630E-03 6.9240E-02 -4.2760E-02 8.2920E-03
S3 1.0740E-03 3.9390E-02 -1.7457E-01 3.8342E-01 -4.6459E-01 3.2093E-01 -1.2359E-01 2.4098E-02 -1.7700E-03
S4 -6.1000E-04 8.4944E-02 -3.1360E-01 7.9973E-01 -1.3780E+00 1.5334E+00 -1.0588E+00 4.1506E-01 -7.0700E-02
S5 -5.1280E-02 2.2138E-01 -5.4532E-01 1.2829E+00 -2.4039E+00 3.1152E+00 -2.5653E+00 1.2031E+00 -2.4485E-01
S6 -7.2490E-02 2.3622E-01 -5.0364E-01 1.3861E+00 -3.1612E+00 5.1427E+00 -5.3618E+00 3.1846E+00 -8.2216E-01
S7 -3.9790E-02 8.5808E-02 -2.0090E-02 -1.0310E-02 1.1664E-01 -2.3986E-01 2.4598E-01 -1.3676E-01 3.2157E-02
S8 4.8080E-03 4.3386E-02 2.2765E-02 -1.3005E-01 3.3405E-01 -4.9319E-01 4.2525E-01 -2.0227E-01 4.0825E-02
S9 -1.1356E-01 1.0456E-01 -1.6073E-01 1.7400E-01 -1.1977E-01 4.9622E-02 -1.0960E-02 9.1100E-04 1.8400E-05
S10 -4.8650E-02 7.8801E-02 -1.1830E-01 1.0453E-01 -5.6910E-02 1.9293E-02 -3.9500E-03 4.4500E-04 -2.1000E-05
S11 -5.0550E-02 7.9321E-02 -8.5140E-02 5.7037E-02 -2.4410E-02 6.6950E-03 -1.1400E-03 1.0900E-04 -4.5000E-06
S12 -5.4810E-02 2.1771E-02 -1.1450E-02 5.7660E-03 -2.3600E-03 7.5000E-04 -1.6000E-04 1.7800E-05 -7.9000E-07
S13 -5.8060E-02 3.5081E-02 -1.6080E-02 6.4020E-03 -2.2200E-03 5.9900E-04 -1.1000E-04 1.1200E-05 -4.8000E-07
S14 -4.8980E-02 2.8630E-02 -1.2180E-02 3.9210E-03 -1.0500E-03 2.2100E-04 -3.2000E-05 2.8000E-06 -1.1000E-07
Watch 26
Table 27 gives the effective focal lengths f1 to f7, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field angle HFOV of each lens in embodiment 9.
f1(mm) 6.60 f6(mm) 6.12
f2(mm) 5.37 f7(mm) -22.25
f3(mm) -4.80 f(mm) 6.72
f4(mm) -47.29 TTL(mm) 6.48
f5(mm) -5.02 HFOV(°) 20.0
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 the distortion magnitude values in the case of different angles of view. Fig. 18D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 9, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 18A to 18D, 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 20D. 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a 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 concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000331
Figure BDA0001553038110000341
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 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.7720E-03 3.4150E-03 -1.1540E-02 2.6183E-02 -3.3680E-02 2.7936E-02 -1.4380E-02 4.2190E-03 -5.5000E-04
S2 4.5080E-03 3.6570E-03 -3.7590E-02 9.3434E-02 -9.7830E-02 4.3661E-02 1.9780E-03 -8.7200E-03 2.2000E-03
S3 4.1300E-03 8.5730E-03 -5.1740E-02 1.2914E-01 -1.6044E-01 1.0647E-01 -3.6720E-02 5.7510E-03 -2.6000E-04
S4 4.1700E-04 5.2766E-02 -1.3369E-01 2.8092E-01 -4.6426E-01 5.2090E-01 -3.6662E-01 1.4750E-01 -2.6050E-02
S5 -4.5390E-02 1.5442E-01 -2.1231E-01 2.0841E-01 -1.3127E-01 4.4388E-02 -7.4800E-03 2.9910E-03 -2.1600E-03
S6 -6.3880E-02 1.6357E-01 -1.4609E-01 9.3108E-02 5.1031E-02 -1.7590E-02 -1.9883E-01 2.5491E-01 -1.0316E-01
S7 -3.1010E-02 5.2354E-02 7.5566E-02 -2.5887E-01 5.7689E-01 -7.6645E-01 5.9886E-01 -2.6214E-01 4.9673E-02
S8 1.1795E-02 2.6072E-02 7.4936E-02 -2.4363E-01 4.9661E-01 -6.1395E-01 4.4971E-01 -1.8218E-01 3.1236E-02
S9 -1.0815E-01 9.9305E-02 -1.2704E-01 1.0218E-01 -4.1520E-02 1.3540E-03 6.0550E-03 -2.2900E-03 2.7100E-04
S10 -5.9650E-02 1.0413E-01 -1.2610E-01 8.8780E-02 -3.8530E-02 1.0242E-02 -1.5600E-03 1.1600E-04 -2.5000E-06
S11 -6.4780E-02 1.0140E-01 -9.4180E-02 5.4780E-02 -2.0670E-02 5.0520E-03 -7.7000E-04 6.7300E-05 -2.6000E-06
S12 -6.0490E-02 2.5867E-02 -1.0050E-02 3.2870E-03 -8.7000E-04 2.1800E-04 -4.7000E-05 5.9700E-06 -3.1000E-07
S13 -5.0800E-02 2.7063E-02 -9.8600E-03 2.4740E-03 -4.4000E-04 7.4200E-05 -1.3000E-05 1.4500E-06 -6.9000E-08
S14 -4.9260E-02 2.7145E-02 -1.1930E-02 4.1880E-03 -1.2000E-03 2.6200E-04 -3.9000E-05 3.3500E-06 -1.3000E-07
Watch 29
Table 30 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, and the maximum half field angle HFOV in embodiment 10.
Figure BDA0001553038110000342
Figure BDA0001553038110000351
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 the distortion magnitude values in the case of different angles of view. Fig. 20D shows a chromatic aberration of magnification curve of the optical imaging lens of embodiment 10, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 20A to 20D, 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 22D. 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has positive power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has 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 concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000361
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.
Figure BDA0001553038110000362
Figure BDA0001553038110000371
Watch 32
Table 33 gives the effective focal lengths f1 to f7, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field angle HFOV of the respective lenses in example 11.
f1(mm) 6.73 f6(mm) 6.89
f2(mm) 5.41 f7(mm) 500.92
f3(mm) -4.66 f(mm) 6.91
f4(mm) 1499.64 TTL(mm) 6.45
f5(mm) -4.08 HFOV(°) 19.5
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 the distortion magnitude values in the case of different angles of view. Fig. 22D shows a chromatic aberration of magnification curve of the optical imaging lens of example 11, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 22A to 22D, 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 24D. 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has negative power, and has a convex object-side surface S7 and a concave image-side surface S8. The fifth lens element E5 has negative power, and has a convex object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000381
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.
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 1.9790E-03 2.4890E-03 -7.9600E-03 2.3260E-02 -3.6690E-02 3.6251E-02 -2.1580E-02 7.1450E-03 -1.0100E-03
S2 4.9010E-03 -1.7920E-02 7.0357E-02 -1.7812E-01 3.1503E-01 -3.4949E-01 2.3102E-01 -8.3030E-02 1.2432E-02
S3 6.6830E-03 -1.2370E-02 3.2120E-02 -6.8810E-02 1.2546E-01 -1.4905E-01 9.9941E-02 -3.4150E-02 4.6240E-03
S4 5.1900E-03 3.4376E-02 -1.2240E-01 3.5609E-01 -7.0773E-01 8.8461E-01 -6.7553E-01 2.9033E-01 -5.3640E-02
S5 -4.3290E-02 1.6303E-01 -3.3958E-01 8.4360E-01 -1.8066E+00 2.6095E+00 -2.3358E+00 1.1742E+00 -2.5361E-01
S6 -6.9230E-02 2.3535E-01 -6.7690E-01 2.6535E+00 -7.5679E+00 1.3924E+01 -1.5669E+01 9.8122E+00 -2.6192E+00
S7 -4.0190E-02 4.1261E-02 2.5830E-01 -8.9663E-01 1.9416E+00 -2.7074E+00 2.3231E+00 -1.1145E+00 2.2781E-01
S8 4.1300E-03 -2.4300E-03 2.9358E-01 -9.6824E-01 1.9903E+00 -2.5978E+00 2.0722E+00 -9.1977E-01 1.7338E-01
S9 -5.6290E-02 -4.6800E-03 -3.2650E-02 7.0188E-02 -7.1560E-02 4.4525E-02 -1.6930E-02 3.6410E-03 -3.4000E-04
S10 -3.4990E-02 3.5443E-02 -4.7160E-02 3.6139E-02 -1.6700E-02 4.6620E-03 -7.4000E-04 5.6200E-05 -1.3000E-06
S11 -3.4020E-02 5.3895E-02 -4.8360E-02 2.6631E-02 -9.5100E-03 2.2090E-03 -3.2000E-04 2.7500E-05 -1.0000E-06
S12 -7.8130E-02 4.3406E-02 -3.9980E-02 3.2384E-02 -1.7620E-02 6.1080E-03 -1.2800E-03 1.4800E-04 -7.2000E-06
S13 -6.2180E-02 3.7691E-02 -2.0730E-02 1.1330E-02 -5.1100E-03 1.5900E-03 -3.1000E-04 3.2400E-05 -1.4000E-06
S14 -5.5320E-02 3.4680E-02 -1.5350E-02 5.1750E-03 -1.4000E-03 2.8900E-04 -4.1000E-05 3.3500E-06 -1.2000E-07
Watch 35
Table 36 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, and the maximum half field angle HFOV in embodiment 12.
f1(mm) 6.79 f6(mm) -500.61
f2(mm) 5.34 f7(mm) -500.23
f3(mm) -4.97 f(mm) 6.72
f4(mm) -45.00 TTL(mm) 6.42
f5(mm) -10.97 HFOV(°) 20.0
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 the distortion magnitude values in the case of different angles of view. Fig. 24D shows a chromatic aberration of magnification curve of the optical imaging lens of example 12, which represents the deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 24A to 24D, 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 26D. 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 forming surface S17.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has positive power, and has a convex object-side surface S3 and a convex image-side surface S4. The third lens element E3 has negative power, and has a convex object-side surface S5 and a concave image-side surface S6. The fourth lens element E4 has 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 concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. Filter E8 has an object side S15 and an image side S16. The light from the object sequentially passes through the respective surfaces S1 to S16 and is finally imaged on the imaging surface S17.
Table 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 BDA0001553038110000401
Figure BDA0001553038110000411
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 A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.8950E-03 -1.1600E-03 9.2560E-03 -2.5800E-02 4.4057E-02 -4.2610E-02 2.3722E-02 -7.0200E-03 8.4300E-04
S2 2.0480E-03 9.3010E-03 -2.7240E-02 2.5170E-03 1.2739E-01 -2.4037E-01 2.0012E-01 -8.1510E-02 1.3184E-02
S3 9.1900E-04 2.6504E-02 -9.9930E-02 1.9043E-01 -1.8775E-01 8.8443E-02 -1.0040E-02 -5.7500E-03 1.4880E-03
S4 6.8700E-04 8.0742E-02 -2.8677E-01 6.9750E-01 -1.1811E+00 1.3250E+00 -9.3434E-01 3.7522E-01 -6.5260E-02
S5 -4.8750E-02 2.1313E-01 -5.4472E-01 1.2936E+00 -2.4058E+00 3.1303E+00 -2.6232E+00 1.2595E+00 -2.6215E-01
S6 -7.0530E-02 2.2392E-01 -5.0336E-01 1.4655E+00 -3.3870E+00 5.5624E+00 -5.8501E+00 3.4815E+00 -8.8879E-01
S7 -3.7420E-02 8.3356E-02 -9.4100E-03 -1.7390E-02 9.7104E-02 -1.5104E-01 8.8057E-02 -1.4370E-02 -1.8900E-03
S8 -7.7000E-04 5.2397E-02 3.3550E-03 -5.3320E-02 1.4724E-01 -2.1341E-01 1.6618E-01 -7.1510E-02 1.4176E-02
S9 -1.0500E-01 8.0302E-02 -1.2593E-01 1.1999E-01 -5.2450E-02 -2.7500E-03 1.2855E-02 -4.9500E-03 6.2600E-04
S10 -5.1970E-02 9.9334E-02 -1.4954E-01 1.2804E-01 -6.6930E-02 2.1777E-02 -4.3000E-03 4.6900E-04 -2.2000E-05
S11 -6.8360E-02 1.1670E-01 -1.1949E-01 7.5988E-02 -3.1160E-02 8.2560E-03 -1.3700E-03 1.2800E-04 -5.2000E-06
S12 -6.0370E-02 1.7934E-02 -2.0600E-03 -1.9700E-03 1.2640E-03 -3.3000E-04 4.5600E-05 -4.0000E-06 2.1500E-07
S13 -5.1910E-02 2.9456E-02 -1.2540E-02 4.6170E-03 -1.4900E-03 3.8300E-04 -6.6000E-05 6.4500E-06 -2.6000E-07
S14 -4.7550E-02 2.9051E-02 -1.2080E-02 3.7990E-03 -9.7000E-04 1.8900E-04 -2.5000E-05 1.9700E-06 -6.7000E-08
Watch 38
Table 39 gives the effective focal lengths f1 to f7, the total effective focal length f of the optical imaging lens, the total optical length TTL, and the maximum half field angle HFOV of the respective lenses in example 13.
f1(mm) 6.39 f6(mm) 13.53
f2(mm) 5.14 f7(mm) 14.66
f3(mm) -4.68 f(mm) 6.72
f4(mm) -31.43 TTL(mm) 6.40
f5(mm) -4.69 HFOV(°) 20.0
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 the distortion magnitude values in the case of different angles of view. Fig. 26D shows a chromatic aberration of magnification curve of the optical imaging lens of example 13, which represents a deviation of different image heights on the imaging surface after light passes through the lens. As can be seen from fig. 26A to 26D, the optical imaging lens according to embodiment 13 can achieve good imaging quality.
In summary, examples 1 to 13 each satisfy the relationship shown in table 40.
Figure BDA0001553038110000421
Figure BDA0001553038110000422
Figure BDA0001553038110000431
Watch 40
The present application also provides an imaging device whose electron photosensitive element may be a photo-coupled device (CCD) or a complementary metal oxide semiconductor device (CMOS). The imaging device may be a stand-alone imaging device such as a digital camera, or may be an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (12)

1. An optical imaging lens in which seven lenses having refractive power are provided, the lenses being 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 to the seventh lens being arranged in order from an object side to an image side along an optical axis,
the first lens and the second lens each have a positive optical power;
the third lens, the fourth lens, the sixth lens and the seventh lens each have a positive optical power or a negative optical power;
the fifth lens has negative focal power, and the image side surface of the fifth lens is a concave surface;
the object side surface of the sixth lens is a convex surface;
a combined power of the fifth lens, the sixth lens and the seventh lens is a negative power,
at least one of an object-side surface of the first lens and an image-side surface of the seventh lens is an aspherical mirror surface;
the optical imaging lens meets the following conditional expression:
3.0 < f1234/(CT1+ CT2+ CT3+ CT4) < 4.0, and
-2.5＜f567/f＜-1.0，
wherein f1234 is a combined focal length of the first lens, the second lens, the third lens, and the fourth lens;
f567 is a combined focal length of the fifth lens, the sixth lens, and the seventh lens;
CT1 is the central thickness of the first lens on the optical axis;
CT2 is the central thickness of the second lens on the optical axis;
CT3 is the central thickness of the third lens on the optical axis;
CT4 is the central thickness of the fourth lens on the optical axis; and
f is the total effective focal length of the optical imaging lens.
2. The optical imaging lens of claim 1, wherein a central thickness CT6 of the sixth lens element on the optical axis and a central thickness CT7 of the seventh lens element on the optical axis satisfy 2.0 < CT6/CT7 < 4.0.
3. The optical imaging lens according to claim 1, wherein a separation distance T45 on the optical axis between the fourth lens and the fifth lens and a separation distance T34 on the optical axis between the third lens and the fourth lens satisfy 3.0 < T45/T34 < 3.6.
4. The optical imaging lens of claim 1, wherein the third lens has a negative power,
the effective focal length f5 of the fifth lens and the effective focal length f3 of the third lens satisfy 0.8 < f5/f3 < 2.4.
5. The optical imaging lens of claim 1, wherein the effective focal length f1 of the first lens and the effective focal length f2 of the second lens satisfy 1.0 < f1/f2 < 2.0.
6. The optical imaging lens of claim 1, wherein the object side surface of the first lens is convex,
the total effective focal length f of the optical imaging lens and the curvature radius R1 of the object side surface of the first lens meet the requirement that f/R1 is less than 3.5 and less than 4.2.
7. The optical imaging lens according to claim 1 or 6, wherein the total effective focal length f of the optical imaging lens and the radius of curvature R10 of the image side surface of the fifth lens satisfy 1.0 < f/R10 < 3.0.
8. The optical imaging lens of claim 1, wherein a radius of curvature R3 of the object-side surface of the second lens and a radius of curvature R6 of the image-side surface of the third lens satisfy 0.8 < R3/R6 < 2.0.
9. The optical imaging lens according to claim 1 or 8, characterized in that 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 0.5 < R14/R13 < 2.5.
10. The optical imaging lens according to claim 1, wherein a maximum half field angle HFOV of the optical imaging lens satisfies HFOV < 30 °.
11. The optical imaging lens of claim 1 or 10, wherein a distance TTL between a center of an object-side surface of the first lens element and an imaging surface of the optical imaging lens on the optical axis and a total effective focal length f of the optical imaging lens satisfy TTL/f ≦ 1.0.
12. The optical imaging lens according to claim 11, wherein a sum Σ CT of central thicknesses on the optical axis of the first lens to the seventh lens and a sum Σ AT of separation distances on the optical axis of any adjacent two lenses of the first lens to the seventh lens, respectively, satisfy Σ CT/Σ AT < 2.0.
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TWI667509B (en) 2018-05-10 2019-08-01 大立光電股份有限公司 Photographing optical lens assembly, imaging apparatus and electronic device
CN108873252B (en) * 2018-07-02 2023-12-19 浙江舜宇光学有限公司 Optical imaging lens
CN108663780B (en) * 2018-08-06 2023-06-16 浙江舜宇光学有限公司 Optical imaging lens
TWI663424B (en) 2018-08-23 2019-06-21 大立光電股份有限公司 Photographing lens system, imaging apparatus and electronic device
JP2020071270A (en) * 2018-10-29 2020-05-07 ソニー株式会社 Image capturing lens and image capturing device
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