CN107741630B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN107741630B
CN107741630B CN201711172644.9A CN201711172644A CN107741630B CN 107741630 B CN107741630 B CN 107741630B CN 201711172644 A CN201711172644 A CN 201711172644A CN 107741630 B CN107741630 B CN 107741630B
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lens
optical imaging
imaging lens
image
optical
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CN107741630A (en
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叶丽慧
贺凌波
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN201711172644.9A priority Critical patent/CN107741630B/en
Publication of CN107741630A publication Critical patent/CN107741630A/en
Priority to PCT/CN2018/100480 priority patent/WO2019100768A1/en
Priority to US16/644,965 priority patent/US11662555B2/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

Abstract

The application discloses an optical imaging lens, which comprises in order from an object side to an image side along an optical axis: the zoom lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens has positive focal power, and the object side surface of the first lens is a convex surface; the second lens has negative focal power; the third lens has positive focal power; the fourth lens has positive focal power or negative focal power, the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface; the fifth lens has positive focal power or negative focal power; the sixth lens has positive focal power or negative focal power, and the object side surface of the sixth lens is a convex surface; the seventh lens has positive focal power or negative focal power; and the eighth lens has a negative power.

Description

Optical imaging lens
Technical Field
The present application relates to an optical imaging lens, and more particularly, to an optical imaging lens including eight lenses.
Background
In recent years, with the rapid development of portable electronic products having an imaging function, there is an increasing demand for a compact optical system. The photosensitive elements of the imaging lens are mainly photosensitive coupled devices (CCD) or Complementary Metal Oxide Semiconductor (CMOS), and with the progress of semiconductor manufacturing technology, the number of pixels of the photosensitive elements is increased and the size of the pixels is reduced, thereby providing higher requirements for high imaging quality and miniaturization of the associated imaging lens.
With the increasing requirements of the miniaturized imaging lens on the pixel and imaging quality, the imaging lens gradually develops towards a large aperture, a large viewing angle, a large imaging range and a high resolution. The conventional lens is difficult to satisfy the requirements of image quality and miniaturization, and it is a current pre-research direction to provide an optical imaging lens with miniaturization, large aperture and high image quality.
Disclosure of Invention
The present application provides an optical imaging lens, such as a large aperture imaging lens, that may be applicable to portable electronic products and that may address at least one of the above-mentioned shortcomings in the prior art.
In one aspect, the present application provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the zoom lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens can have positive focal power, and the object side surface of the first lens can be a convex surface; the second lens may have a negative optical power; the third lens may have a positive optical power; the fourth lens has positive focal power or negative focal power, the object side surface of the fourth lens can be a concave surface, and the image side surface of the fourth lens can be a convex surface; the fifth lens has positive focal power or negative focal power; 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 may have positive or negative optical power; and the eighth lens has a negative power.
In one embodiment, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy f/EPD ≦ 2.0.
In one embodiment, the distance TTL from the center of the object side surface of the first lens to the imaging surface of the optical imaging lens on the optical axis and the half of the diagonal length ImgH of the effective pixel area on the imaging surface of the optical imaging lens can satisfy TTL/ImgH ≦ 1.65.
In one embodiment, the full field angle FOV of the optical imaging lens may satisfy 70 ≦ FOV ≦ 81.
In one embodiment, the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens can satisfy 0.5 < f1/f < 1.0.
In one embodiment, the effective focal length f2 of the second lens and the total effective focal length f of the optical imaging lens can satisfy-3.5 ≦ f2/f ≦ -1.5.
In one embodiment, the effective focal length f3 of the third lens and the total effective focal length f of the optical imaging lens can satisfy 1.5 ≦ f3/f ≦ 3.0.
In one embodiment, the effective focal length f8 of the eighth lens and the total effective focal length f of the optical imaging lens can satisfy-5.0 ≦ f8/f ≦ -1.0.
In one embodiment, the radius of curvature R3 of the object-side surface of the second lens and the radius of curvature R4 of the image-side surface of the second lens can satisfy 1.5 ≦ R3/R4 ≦ 3.0.
In one embodiment, the radius of curvature R1 of the object-side surface of the first lens and the radius of curvature R6 of the image-side surface of the third lens may satisfy-0.5 < R1/R6 < 0.
In one embodiment, the central thickness CT3 of the third lens element on the optical axis and the central thickness CT4 of the fourth lens element on the optical axis satisfy 1.0 < CT3/CT4 < 2.5.
In one embodiment, the radius of curvature R9 of the object-side surface of the fifth lens and the radius of curvature R11 of the object-side surface of the sixth lens may satisfy-2.5 < R9/R11 < 0.
In one embodiment, a radius of curvature R15 of the object-side surface of the eighth lens and a radius of curvature R16 of the image-side surface of the eighth lens may satisfy (R15-R16)/(R15+ R16) < 1.0.
In one embodiment, the central thickness CT1 of the first lens element on the optical axis and the central thickness CT2 of the second lens element on the optical axis satisfy 2.0 < CT1/CT2 < 4.0.
In another aspect, the present application further provides an optical imaging lens, in order from an object side to an image side along an optical axis, comprising: the zoom lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The first lens can have positive focal power, and the object side surface of the first lens can be a convex surface; the second lens may have a negative optical power; the third lens may have a positive optical power; the fourth lens, the fifth lens and the seventh lens all have positive focal power or negative focal power; 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 eighth lens may have a negative optical power. Wherein, the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens can satisfy f/EPD is less than or equal to 2.0.
In one embodiment, the object-side surface of the second lens element can be convex and the image-side surface of the second lens element can be concave.
In one embodiment, the image side surface of the third lens element can be convex.
In one embodiment, the object-side surface of the fourth lens element can be concave and the image-side surface can be convex.
In one embodiment, the object side surface of the fifth lens may be concave.
The optical imaging lens adopts a plurality of lenses (for example, eight lenses), and has at least one beneficial effect of ultra-thinness, miniaturization, large aperture, large visual angle, 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, eight lenses having optical powers, i.e., a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, a seventh lens, and an eighth lens. The eight lenses are arranged in order from an object side to an image side along an optical axis.
In an exemplary embodiment, the first lens may have a positive optical power, and the object-side surface thereof may be convex; the second lens may have a negative optical power; the third lens may have a positive optical power; the fourth lens has positive focal power or negative focal power, the object side surface of the fourth lens can be a concave surface, and the image side surface of the fourth lens can be a convex surface; the fifth lens has positive focal power or negative focal power; 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 focal power or negative focal power; the eighth lens may have a negative optical power.
In an exemplary embodiment, the object-side surface of the second lens element may be convex and the image-side surface may be concave.
In an exemplary embodiment, at least one of the object-side surface and the image-side surface of the third lens may be convex, for example, the image-side surface of the third lens may be convex.
In an exemplary embodiment, at least one of the object-side surface and the image-side surface of the fifth lens may be a concave surface, for example, the object-side surface of the fifth lens may be a concave surface.
In an exemplary embodiment, at least one of the object-side surface and the image-side surface of the seventh lens may be a concave surface, for example, the image-side surface of the seventh lens may be a concave surface.
In an exemplary embodiment, the object-side surface of the eighth 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 f/EPD ≦ 2.0, where f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens. More specifically, f and EPD further satisfy 1.55 ≦ f/EPD ≦ 1.90. The optical imaging lens meets the conditional expression f/EPD less than or equal to 2.0, the light transmission amount in unit time can be effectively increased, the optical imaging lens has the advantage of large aperture, and therefore the imaging effect in a dark environment can be enhanced while the aberration of the marginal field of view is reduced.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression TTL/ImgH ≦ 1.65, where TTL is a distance on an optical axis from a center of an object-side surface of the first lens to an imaging surface of the optical imaging lens, and ImgH is a half of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens. More specifically, TTL and ImgH can further satisfy 1.41 ≦ TTL/ImgH ≦ 1.63. The miniaturization characteristic of the imaging lens is ensured by controlling the ratio of TTL to ImgH.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 70 ° ≦ FOV ≦ 81 °, where FOV is a full field angle of the optical imaging lens. More specifically, the FOV can further satisfy 70.5 ° ≦ FOV ≦ 80.4 °. The imaging range of the lens is effectively controlled by controlling the full field angle of the lens.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 0.5 < f1/f < 1.0, where f1 is an effective focal length of the first lens and f is a total effective focal length of the optical imaging lens. More specifically, f1 and f can further satisfy 0.65 < f1/f < 0.95, e.g., 0.72. ltoreq. f 1/f. ltoreq.0.91. Satisfying the conditional expression 0.5 < f1/f < 1.0, the object side end can have enough convergence capability to adjust the focusing position of the light beam, thereby shortening the total optical length of the imaging system.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-3.5 ≦ f2/f ≦ -1.5, where f2 is the effective focal length of the second lens and f is the total effective focal length of the optical imaging lens. More specifically, f2 and f can further satisfy-3.30. ltoreq. f 2/f. ltoreq-1.56. As known to those skilled in the art, spherical aberration is one of the most important reasons for limiting the resolution of the lens, and by reasonably introducing a lens with negative power in the present application, the spherical aberration of the imaging system can be effectively balanced, and the imaging quality can be improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.5 ≦ f3/f ≦ 3.0, where f3 is an effective focal length of the third lens, and f is a total effective focal length of the optical imaging lens. More specifically, f3 and f can further satisfy 1.70. ltoreq. f 3/f. ltoreq.2.70, for example, 1.84. ltoreq. f 3/f. ltoreq.2.59. By controlling the power of the third lens, the tolerance sensitivity of the imaging system can be effectively reduced, and the miniaturization of the imaging system can be ensured.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-5.0 ≦ f8/f ≦ -1.0, where f8 is an effective focal length of the eighth lens, and f is a total effective focal length of the optical imaging lens. More specifically, f8 and f can further satisfy-4.82. ltoreq. f 8/f. ltoreq.1.10. By controlling the focal power of the eighth lens, the distortion of the image surface in the paraxial region can be effectively corrected, so that the imaging quality of the imaging system is improved.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.5 ≦ R3/R4 ≦ 3.0, where R3 is a radius of curvature of an object-side surface of the second lens, and R4 is a radius of curvature of an image-side surface of the second lens. More specifically, R3 and R4 can further satisfy 1.64. ltoreq. R3/R4. ltoreq.2.93. Satisfying the conditional expression 1.5 ≦ R3/R4 ≦ 3.0 may contribute to reducing the generation of spherical aberration and astigmatism of the imaging system.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-0.5 < R1/R6 < 0, where R1 is a radius of curvature of an object-side surface of the first lens and R6 is a radius of curvature of an image-side surface of the third lens. More specifically, R1 and R6 may further satisfy-0.40 < R1/R6 < -0.20, for example, -0.32. ltoreq. R1/R6. ltoreq-0.24. By matching the first lens and the third lens and satisfying the conditional expression-0.5 < R1/R6 < 0, the chromatic aberration of the imaging system can be effectively corrected, and the balance of various phase differences can be realized.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 1.0 < CT3/CT4 < 2.5, where CT3 is a central thickness of the third lens element on the optical axis, and CT4 is a central thickness of the fourth lens element on the optical axis. More specifically, CT3 and CT4 may further satisfy 1.30 < CT3/CT4 < 2.45, e.g., 1.38 ≦ CT3/CT4 ≦ 2.40. The condition that the CT3/CT4 is more than 2.5 is satisfied, so that the lens size distribution is uniform, the assembly stability is ensured, the aberration of the whole imaging system is reduced, and the total optical length of the imaging system is shortened.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression-2.5 < R9/R11 < 0, where R9 is a radius of curvature of an object-side surface of the fifth lens and R11 is a radius of curvature of an object-side surface of the sixth lens. More specifically, R9 and R11 may further satisfy-2.10 < R9/R11 < -0.30, for example, -2.02. ltoreq. R9/R11. ltoreq.0.41. Through the cooperation of the fifth lens and the sixth lens and the satisfaction of the conditional expression of-2.5 < R9/R11 < 0, the chromatic aberration of the imaging system can be effectively corrected, and the balance of various phase differences can be realized.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression (R15-R16)/(R15+ R16) < 1.0, where R15 is a radius of curvature of an object-side surface of the eighth lens and R16 is a radius of curvature of an image-side surface of the eighth lens. More specifically, R15 and R16 may further satisfy 0.10 < (R15-R16)/(R15+ R16) < 0.65, for example, 0.16. ltoreq. (R15-R16)/(R15+ R16. ltoreq.0.56. By controlling the ratio of the curvature radii of the object side surface and the image side surface of the eighth lens, the integral aberration of the imaging system can be effectively corrected.
In an exemplary embodiment, the optical imaging lens of the present application may satisfy the conditional expression 2.0 < CT1/CT2 < 4.0, where CT1 is a central thickness of the first lens on the optical axis, and CT2 is a central thickness of the second lens on the optical axis. More specifically, CT1 and CT2 may further satisfy 2.30 < CT1/CT2 < 3.60, for example, 2.39 ≦ CT1/CT2 ≦ 3.56. By controlling the ratio of the center thicknesses of the first lens and the second lens, good processability of the imaging system can be obtained.
In an exemplary embodiment, the optical lens may further include at least one stop to improve the imaging quality of the lens. The stop may be disposed at any position as required, for example, the stop may be disposed between the object side and the first lens; alternatively, the diaphragm may be disposed between the first lens and the second lens.
Optionally, the optical lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on an image plane.
The optical imaging lens according to the above-described embodiment of the present application may employ a plurality of lenses, for example, eight 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 imaging lens can be effectively reduced, the sensitivity of the imaging lens can be reduced, and the machinability of the imaging 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. Meanwhile, the optical imaging lens with the configuration has the beneficial effects of large aperture, large visual angle, high imaging quality and the like.
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 eight lenses are exemplified in the embodiment, the optical imaging lens is not limited to include eight 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, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a 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. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000101
Figure BDA0001477558210000111
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 eighth lens element E8 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 BDA0001477558210000112
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。
Figure BDA0001477558210000113
Figure BDA0001477558210000121
TABLE 2
Table 3 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in embodiment 1.
f1(mm) 3.48 f7(mm) -13.42
f2(mm) -12.76 f8(mm) -11.00
f3(mm) 10.03 f(mm) 3.87
f4(mm) 218.23 TTL(mm) 4.74
f5(mm) -11.29 ImgH(mm) 3.37
f6(mm) 18.17 FOV(°) 80.4
TABLE 3
The optical imaging lens in embodiment 1 satisfies:
f/EPD is 1.79, wherein f is the total effective focal length of the optical imaging lens, and EPD is the entrance pupil diameter of the optical imaging lens;
TTL/ImgH is 1.41, where TTL is the distance on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, and ImgH is half the diagonal length of the effective pixel area on the imaging surface S19;
f1/f is 0.90, wherein f1 is the effective focal length of the first lens E1, and f is the total effective focal length of the optical imaging lens;
f2/f is-3.30, wherein f2 is the effective focal length of the second lens E2, and f is the total effective focal length of the optical imaging lens;
f3/f is 2.59, wherein f3 is the effective focal length of the third lens E3, and f is the total effective focal length of the optical imaging lens;
f8/f is-2.84, wherein f8 is the effective focal length of the eighth lens E8, and f is the total effective focal length of the optical imaging lens;
R3/R4 is 1.64, where R3 is the radius of curvature of the object-side surface S3 of the second lens E2, and R4 is the radius of curvature of the image-side surface S4 of the second lens E2;
R1/R6 is-0.26, where R1 is the radius of curvature of the object-side surface S1 of the first lens E1, and R6 is the radius of curvature of the image-side surface S6 of the third lens E3;
CT3/CT4 is 1.65, where 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;
R9/R11 ═ 1.19, where R9 is the radius of curvature of the object-side surface S9 of the fifth lens E5, and R11 is the radius of curvature of the object-side surface S11 of the sixth lens E6;
(R15-R16)/(R15+ R16) ═ 0.23, where R15 is the radius of curvature of the object-side surface S15 of the eighth lens E8, and R16 is the radius of curvature of the image-side surface S16 of the eighth lens E8;
CT1/CT2 is 2.39, where CT1 is the central thickness of the first lens E1 on the optical axis, and CT2 is the central thickness of the second lens E2 on the optical axis.
In addition, fig. 2A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the deviation of the convergent focus 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 first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has positive power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000141
Figure BDA0001477558210000151
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 eighth lens element E8 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 4.5900E-04 7.0170E-03 -1.4940E-02 1.3971E-02 4.4250E-03 -2.4110E-02 2.2876E-02 -9.6300E-03 1.4970E-03
S2 -3.1680E-02 9.4563E-02 -1.4831E-01 1.3440E-01 -4.9920E-02 -2.7880E-02 3.8599E-02 -1.5950E-02 2.3870E-03
S3 -5.4250E-02 1.1418E-01 -1.7162E-01 2.1217E-01 -1.9315E-01 1.3748E-01 -7.6790E-02 2.9472E-02 -5.2100E-03
S4 -6.3420E-02 2.7360E-02 -8.3400E-03 1.7270E-02 -1.0109E-01 2.4995E-01 -2.8539E-01 1.5686E-01 -3.1700E-02
S5 -3.4060E-02 -8.5870E-02 1.5314E-02 3.7141E-01 -1.4721E+00 2.7737E+00 -2.8223E+00 1.5013E+00 -3.2680E-01
S6 1.7049E-01 -8.1119E-01 9.7991E-01 -2.6757E-01 -4.7872E-01 7.4366E-01 -7.6410E-01 5.0500E-01 -1.3599E-01
S7 1.4509E-01 -6.3055E-01 4.4054E-01 7.0957E-01 -1.2692E+00 8.1107E-01 -4.6451E-01 3.1980E-01 -9.9250E-02
S8 -2.1533E-01 7.8195E-01 -1.7842E+00 2.2551E+00 -1.5665E+00 6.5976E-01 -3.5650E-01 2.3189E-01 -6.2270E-02
S9 -2.5559E-01 9.9844E-01 -2.1530E+00 2.6474E+00 -2.0554E+00 1.1949E+00 -6.6783E-01 3.0216E-01 -6.3760E-02
S10 -7.6720E-02 3.7066E-01 -7.7486E-01 8.8625E-01 -6.0014E-01 2.3265E-01 -4.2790E-02 3.3700E-04 7.2500E-04
S11 -5.1030E-02 7.3904E-02 -1.7190E-01 2.2408E-01 -1.9478E-01 1.0377E-01 -3.0930E-02 3.9100E-03 0.0000E+00
S12 5.7077E-02 -1.3412E-01 1.3197E-01 -8.4220E-02 3.3763E-02 -8.2000E-03 1.1030E-03 -6.3000E-05 0.0000E+00
S13 8.5567E-02 -1.7959E-01 1.5638E-01 -9.4430E-02 3.7044E-02 -8.6400E-03 1.0780E-03 -5.5000E-05 0.0000E+00
S14 4.6062E-02 -8.7780E-02 5.7990E-02 -2.5740E-02 7.0650E-03 -1.0700E-03 7.7600E-05 -1.8000E-06 0.0000E+00
S15 -1.0591E-01 -2.5270E-02 4.5853E-02 -2.1290E-02 5.3500E-03 -7.8000E-04 6.1400E-05 -2.0000E-06 0.0000E+00
S16 -1.8874E-01 7.6906E-02 -2.7650E-02 7.4310E-03 -1.3300E-03 1.4400E-04 -8.5000E-06 2.0800E-07 0.0000E+00
TABLE 5
Table 6 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in embodiment 2.
f1(mm) 3.45 f7(mm) 32.27
f2(mm) -8.29 f8(mm) -9.41
f3(mm) 10.02 f(mm) 4.46
f4(mm) 377.36 TTL(mm) 5.41
f5(mm) -13.13 ImgH(mm) 3.40
f6(mm) -31.89 FOV(°) 73.3
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 first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000171
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 element E1 through the eighth lens element E8 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 BDA0001477558210000172
Figure BDA0001477558210000181
TABLE 8
Table 9 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in embodiment 3.
f1(mm) 3.47 f7(mm) -346.12
f2(mm) -8.02 f8(mm) -9.56
f3(mm) 9.52 f(mm) 4.38
f4(mm) 769.75 TTL(mm) 5.38
f5(mm) -14.94 ImgH(mm) 3.40
f6(mm) -160.63 FOV(°) 74.0
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 first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex 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. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000191
Watch 10
As is clear 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 eighth lens element E8 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 -4.1733E-03 2.3693E-02 -5.7200E-02 7.7382E-02 -6.0640E-02 2.4651E-02 -2.9400E-03 -1.2100E-03 3.2200E-04
S2 4.9710E-02 -2.5343E-01 6.2410E-01 -9.4467E-01 9.3040E-01 -5.9894E-01 2.4223E-01 -5.5750E-02 5.5660E-03
S3 3.6814E-02 -2.6527E-01 6.1755E-01 -8.2371E-01 6.8102E-01 -3.2968E-01 7.5595E-02 3.6700E-04 -2.4000E-03
S4 -4.7907E-02 -6.8650E-02 1.6612E-01 -2.1557E-01 1.7580E-01 -7.1410E-02 -1.5700E-03 1.2951E-02 -3.1700E-03
S5 -2.7432E-02 -1.8000E-02 -1.6612E-01 5.2846E-01 -9.3827E-01 1.0323E+00 -6.8061E-01 2.4426E-01 -3.6440E-02
S6 -1.1952E-03 -7.3360E-02 -3.4980E-01 8.5970E-01 -5.4300E-01 -3.1410E-01 6.2534E-01 -3.2894E-01 6.1337E-02
S7 -3.6843E-02 1.6684E-01 -1.1160E+00 2.3404E+00 -2.2770E+00 9.4934E-01 5.7786E-02 -1.8165E-01 4.4263E-02
S8 -1.2268E-01 3.8445E-01 -6.9995E-01 3.0525E-01 8.3691E-01 -1.5694E+00 1.1992E+00 -4.4869E-01 6.7437E-02
S9 -1.7991E-01 5.9573E-01 -1.2040E+00 1.3434E+00 -8.7481E-01 3.0559E-01 -3.7310E-02 -5.8300E-03 1.2190E-03
S10 -1.0032E-01 2.8999E-01 -5.4877E-01 5.7169E-01 -3.5106E-01 1.2320E-01 -2.0650E-02 1.7800E-04 3.6700E-04
S11 7.0929E-03 -6.9910E-02 1.1213E-01 -1.3686E-01 9.1868E-02 -3.3900E-02 5.7840E-03 -3.0000E-04 0.0000E+00
S12 4.6249E-02 -1.8556E-01 2.8111E-01 -2.6373E-01 1.4951E-01 -5.0860E-02 9.5390E-03 -7.6000E-04 0.0000E+00
S13 4.2396E-02 -1.2542E-01 9.7025E-02 -4.6760E-02 9.5620E-03 4.3100E-04 -4.5000E-04 4.7900E-05 0.0000E+00
S14 3.8233E-02 -6.8560E-02 4.1116E-02 -1.7000E-02 4.3550E-03 -6.3000E-04 4.3200E-05 -8.9000E-07 0.0000E+00
S15 -1.7653E-01 5.6344E-02 -1.1280E-02 2.9340E-03 -7.8000E-04 1.3000E-04 -1.1000E-05 3.8100E-07 0.0000E+00
S16 -1.9535E-01 8.5365E-02 -3.1530E-02 8.2340E-03 -1.3800E-03 1.4100E-04 -7.9000E-06 1.8800E-07 0.0000E+00
TABLE 11
Table 12 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in embodiment 4.
f1(mm) 3.85 f7(mm) 28.01
f2(mm) -8.57 f8(mm) -6.20
f3(mm) 8.97 f(mm) 4.29
f4(mm) 264.70 TTL(mm) 5.50
f5(mm) -14.99 ImgH(mm) 3.57
f6(mm) 37.02 FOV(°) 77.8
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, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a 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. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000211
Figure BDA0001477558210000221
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 eighth lens element E8 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 -1.4600E-03 2.5560E-02 -1.0971E-01 3.2167E-01 -5.8036E-01 6.5600E-01 -4.4995E-01 1.7144E-01 -2.8060E-02
S2 -6.8600E-03 -2.8000E-02 2.9746E-01 -1.0468E+00 2.1305E+00 -2.6256E+00 1.9071E+00 -7.4569E-01 1.2069E-01
S3 -4.6210E-02 4.0693E-02 -1.1675E-01 8.7448E-01 -2.9009E+00 5.3146E+00 -5.6029E+00 3.1899E+00 -7.5487E-01
S4 -9.0380E-02 4.6970E-02 3.6445E-02 -4.3321E-01 2.2640E+00 -7.2929E+00 1.3286E+01 -1.2613E+01 4.9079E+00
S5 -2.6850E-02 -2.0917E-01 1.3309E+00 -7.6452E+00 2.5335E+01 -5.1729E+01 6.3953E+01 -4.4136E+01 1.3197E+01
S6 5.8890E-03 1.1253E-01 2.4516E-01 -7.3762E+00 3.0246E+01 -5.8343E+01 5.9783E+01 -3.1388E+01 6.6681E+00
S7 -7.6200E-02 4.0507E-01 -8.1338E-01 -3.8417E+00 2.2316E+01 -4.5715E+01 4.6807E+01 -2.4050E+01 4.9519E+00
S8 -2.0134E-01 1.1010E+00 -3.2292E+00 4.4062E+00 -2.1744E+00 -5.9691E-01 5.2720E-01 3.3383E-01 -2.1043E-01
S9 -2.0094E-01 1.1140E+00 -3.1490E+00 4.9077E+00 -5.1575E+00 4.5080E+00 -3.4133E+00 1.7231E+00 -3.8969E-01
S10 -9.9680E-02 1.6202E-01 -1.7886E-01 1.6613E-01 -2.5042E-01 3.5782E-01 -2.7847E-01 1.0502E-01 -1.5330E-02
S11 -2.0740E-02 -5.2670E-02 9.6900E-03 -9.0300E-03 3.8417E-02 -4.1180E-02 1.7606E-02 -2.6800E-03 0.0000E+00
S12 5.5003E-02 -9.8740E-02 2.2042E-02 2.3233E-02 -1.9150E-02 5.7600E-03 -7.3000E-04 2.4300E-05 0.0000E+00
S13 7.2113E-02 -1.6696E-01 1.2898E-01 -7.0160E-02 2.6318E-02 -6.0200E-03 7.4500E-04 -3.8000E-05 0.0000E+00
S14 4.9279E-02 -1.0858E-01 7.3237E-02 -2.9880E-02 7.3390E-03 -1.0200E-03 7.2700E-05 -2.0000E-06 0.0000E+00
S15 -1.2470E-01 8.8700E-03 2.3481E-02 -1.2060E-02 2.8900E-03 -3.8000E-04 2.6500E-05 -7.6000E-07 0.0000E+00
S16 -2.1696E-01 1.0134E-01 -4.0110E-02 1.1013E-02 -1.9500E-03 2.0900E-04 -1.2000E-05 3.1200E-07 0.0000E+00
TABLE 14
Table 15 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in example 5.
f1(mm) 3.41 f7(mm) -10.75
f2(mm) -11.47 f8(mm) -18.88
f3(mm) 9.89 f(mm) 3.92
f4(mm) -148.36 TTL(mm) 4.76
f5(mm) -11.71 ImgH(mm) 3.37
f6(mm) 23.33 FOV(°) 79.9
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, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a concave object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a 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. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000241
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 element E1 through the eighth lens element E8 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 -1.6500E-03 2.9852E-02 -1.3473E-01 3.9763E-01 -7.2557E-01 8.2981E-01 -5.7743E-01 2.2366E-01 -3.7340E-02
S2 -1.0250E-02 -2.2020E-02 3.0846E-01 -1.1674E+00 2.5186E+00 -3.3066E+00 2.5892E+00 -1.1112E+00 2.0176E-01
S3 -5.0730E-02 4.5944E-02 2.1207E-02 9.0501E-02 -6.6983E-01 1.5495E+00 -1.8240E+00 1.1095E+00 -2.7120E-01
S4 -8.8920E-02 5.2240E-02 3.6704E-02 -4.3505E-01 2.2618E+00 -7.2929E+00 1.3286E+01 -1.2613E+01 4.9079E+00
S5 -3.4560E-02 -2.2615E-01 1.5404E+00 -8.6145E+00 2.8352E+01 -5.7656E+01 7.0976E+01 -4.8762E+01 1.4497E+01
S6 5.3983E-02 -7.9701E-01 6.2909E+00 -2.9591E+01 8.1088E+01 -1.3230E+02 1.2619E+02 -6.4968E+01 1.3992E+01
S7 -2.2700E-03 -6.4703E-01 5.6862E+00 -2.6233E+01 6.9871E+01 -1.0967E+02 9.9955E+01 -4.8998E+01 1.0017E+01
S8 -8.5580E-02 -5.1697E-01 6.0942E+00 -2.4894E+01 5.3004E+01 -6.5099E+01 4.6718E+01 -1.8336E+01 3.0646E+00
S9 -1.0722E-01 -2.3712E-01 4.7639E+00 -1.9913E+01 4.1166E+01 -4.9009E+01 3.4447E+01 -1.3409E+01 2.2412E+00
S10 -9.9530E-02 1.2357E-01 1.4703E-01 -8.0180E-01 1.2499E+00 -9.9392E-01 4.3473E-01 -9.9420E-02 9.2670E-03
S11 -2.7900E-02 -3.9740E-02 1.2300E-03 5.2400E-04 2.4560E-02 -3.0630E-02 1.3787E-02 -2.1500E-03 0.0000E+00
S12 6.8502E-02 -1.3216E-01 6.7674E-02 -1.3840E-02 -1.0700E-03 5.4400E-04 1.0200E-04 -3.2000E-05 0.0000E+00
S13 7.3459E-02 -1.7628E-01 1.3953E-01 -7.7650E-02 2.9854E-02 -7.0000E-03 8.8700E-04 -4.7000E-05 0.0000E+00
S14 5.2382E-02 -1.2359E-01 8.7750E-02 -3.7480E-02 9.7450E-03 -1.4700E-03 1.1900E-04 -4.0000E-06 0.0000E+00
S15 -1.3509E-01 1.2701E-02 2.3923E-02 -1.2750E-02 3.0970E-03 -4.1000E-04 2.8600E-05 -8.2000E-07 0.0000E+00
S16 -2.2200E-01 1.0311E-01 -3.9150E-02 1.0119E-02 -1.6700E-03 1.6600E-04 -9.0000E-06 2.0700E-07 0.0000E+00
TABLE 17
Table 18 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in embodiment 6.
f1(mm) 3.36 f7(mm) -12.01
f2(mm) -10.66 f8(mm) -18.67
f3(mm) 10.15 f(mm) 3.94
f4(mm) -139.94 TTL(mm) 4.77
f5(mm) -11.84 ImgH(mm) 3.37
f6(mm) 28.60 FOV(°) 79.5
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 first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a convex object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000261
Figure BDA0001477558210000271
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 eighth lens element E8 are aspheric. Table 20 shows high-order term coefficients that can be used for each aspherical mirror surface in example 7, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.8528E-04 8.7050E-03 -2.6230E-02 4.2286E-02 -3.8360E-02 1.5553E-02 6.5100E-04 -2.8400E-03 6.5700E-04
S2 -6.8325E-04 -6.5120E-02 2.8558E-01 -6.3496E-01 8.6875E-01 -7.5778E-01 4.0790E-01 -1.2333E-01 1.6011E-02
S3 -2.4675E-02 -6.3140E-02 3.2717E-01 -7.0349E-01 9.6142E-01 -8.4496E-01 4.5991E-01 -1.3995E-01 1.8133E-02
S4 -6.4174E-02 -1.6800E-02 1.0927E-01 -1.9236E-01 1.8632E-01 -2.5130E-02 -1.2589E-01 1.1410E-01 -3.1310E-02
S5 -3.4800E-02 -8.0790E-02 1.0900E-04 3.1157E-01 -1.0141E+00 1.7354E+00 -1.6508E+00 8.2095E-01 -1.6657E-01
S6 1.4993E-01 -5.2893E-01 -9.9763E-01 5.9403E+00 -1.1140E+01 1.1360E+01 -6.7470E+00 2.1961E+00 -3.0138E-01
S7 1.2836E-01 -1.7244E-01 -2.4925E+00 9.5440E+00 -1.6393E+01 1.6152E+01 -9.4906E+00 3.1270E+00 -4.4773E-01
S8 -1.6613E-01 7.0841E-01 -2.5343E+00 5.5119E+00 -7.5258E+00 6.4231E+00 -3.3341E+00 9.6883E-01 -1.2182E-01
S9 -1.5985E-01 5.7863E-01 -1.7839E+00 3.6861E+00 -5.1080E+00 4.5949E+00 -2.5848E+00 8.3441E-01 -1.1969E-01
S10 -2.7733E-02 1.1606E-01 -4.0812E-01 7.7575E-01 -9.1651E-01 6.7915E-01 -3.0450E-01 7.4597E-02 -7.4200E-03
S11 1.7215E-02 -7.6520E-02 -2.4830E-02 1.5287E-01 -2.0802E-01 1.4214E-01 -5.1150E-02 7.5300E-03 0.0000E+00
S12 7.6508E-02 -1.8366E-01 1.8399E-01 -1.2796E-01 5.9166E-02 -1.7440E-02 2.9610E-03 -2.2000E-04 0.0000E+00
S13 7.8660E-02 -1.8201E-01 1.6172E-01 -1.0354E-01 4.2966E-02 -1.0600E-02 1.4040E-03 -7.7000E-05 0.0000E+00
S14 4.1116E-02 -7.8910E-02 5.1979E-02 -2.4370E-02 7.5790E-03 -1.4100E-03 1.4100E-04 -5.7000E-06 0.0000E+00
S15 -1.7076E-01 6.2034E-02 -1.7270E-02 5.4930E-03 -1.4000E-03 2.1500E-04 -1.7000E-05 5.5200E-07 0.0000E+00
S16 -2.1972E-01 1.0300E-01 -4.2250E-02 1.2455E-02 -2.4000E-03 2.8300E-04 -1.8000E-05 5.0400E-07 0.0000E+00
Watch 20
Table 21 gives effective focal lengths f1 to f8 of the respective lenses, a total effective focal length f of the optical imaging lens, a distance TTL on the optical axis from the center of the object side surface S1 of the first lens E1 to the imaging surface S19, a half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and a full field angle FOV of the optical imaging lens in embodiment 7.
f1(mm) 3.45 f7(mm) -21.98
f2(mm) -7.53 f8(mm) -11.95
f3(mm) 9.07 f(mm) 4.39
f4(mm) -35.22 TTL(mm) 5.39
f5(mm) -56.83 ImgH(mm) 3.40
f6(mm) -173.13 FOV(°) 74.0
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 first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has 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. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000291
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 eighth lens element E8 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 8.5630E-04 5.5720E-03 -1.4890E-02 1.6988E-02 -4.5300E-03 -1.1620E-02 1.3380E-02 -6.0100E-03 9.8800E-04
S2 1.5933E-02 -1.4229E-01 4.7764E-01 -9.2747E-01 1.1531E+00 -9.3472E-01 4.7628E-01 -1.3829E-01 1.7434E-02
S3 -1.0073E-02 -1.4847E-01 5.5272E-01 -1.0512E+00 1.3039E+00 -1.0680E+00 5.5657E-01 -1.6661E-01 2.1763E-02
S4 -6.6346E-02 -1.9880E-02 3.9560E-02 2.3822E-01 -9.2562E-01 1.5878E+00 -1.4968E+00 7.5461E-01 -1.5958E-01
S5 -3.8461E-02 -6.0480E-02 -9.2990E-02 6.3803E-01 -1.6320E+00 2.4539E+00 -2.1889E+00 1.0644E+00 -2.1824E-01
S6 1.4135E-01 -7.8212E-01 8.3973E-01 4.8283E-01 -2.0304E+00 2.0938E+00 -1.0234E+00 2.1919E-01 -9.2900E-03
S7 1.4998E-01 -6.6357E-01 4.8319E-01 1.1608E+00 -3.0030E+00 3.1274E+00 -1.7714E+00 5.4746E-01 -7.4000E-02
S8 -8.3408E-02 8.1120E-03 2.1126E-01 -5.2408E-01 3.4898E-01 2.3214E-01 -4.7792E-01 2.6857E-01 -5.4080E-02
S9 -6.2586E-02 -1.4269E-01 5.5943E-01 -7.2521E-01 -2.9690E-02 1.0666E+00 -1.1854E+00 5.5803E-01 -1.0098E-01
S10 5.2107E-02 -3.3103E-01 7.5037E-01 -1.0933E+00 1.0502E+00 -6.5714E-01 2.5809E-01 -5.8870E-02 6.3020E-03
S11 9.8752E-02 -3.2810E-01 4.5329E-01 -4.3335E-01 2.5153E-01 -8.0210E-02 9.5750E-03 3.4500E-04 0.0000E+00
S12 9.9920E-02 -2.4781E-01 2.8870E-01 -2.3045E-01 1.1950E-01 -3.8700E-02 7.0980E-03 -5.6000E-04 0.0000E+00
S13 6.0715E-02 -1.6657E-01 1.4035E-01 -8.2940E-02 3.1086E-02 -7.0100E-03 8.6600E-04 -4.5000E-05 0.0000E+00
S14 4.3666E-02 -8.3640E-02 5.4356E-02 -2.4250E-02 7.1220E-03 -1.2600E-03 1.2000E-04 -4.6000E-06 0.0000E+00
S15 -1.9109E-01 9.1599E-02 -3.6550E-02 1.2555E-02 -2.9500E-03 4.1700E-04 -3.2000E-05 9.9500E-07 0.0000E+00
S16 -2.1943E-01 1.0543E-01 -4.3530E-02 1.2819E-02 -2.4700E-03 2.9300E-04 -1.9000E-05 5.3600E-07 0.0000E+00
TABLE 23
Table 24 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in embodiment 8.
f1(mm) 3.48 f7(mm) -18.12
f2(mm) -7.26 f8(mm) -9.87
f3(mm) 8.66 f(mm) 4.42
f4(mm) -21.96 TTL(mm) 5.43
f5(mm) 229.35 ImgH(mm) 3.40
f6(mm) 127.65 FOV(°) 73.6
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, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a concave image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000311
Figure BDA0001477558210000321
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 eighth lens element E8 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 6.3336E-04 2.1776E-02 -9.5070E-02 2.9970E-01 -5.9352E-01 7.5934E-01 -6.0791E-01 2.7689E-01 -5.5060E-02
S2 -1.2822E-02 -9.3690E-03 2.9734E-01 -1.2707E+00 3.0727E+00 -4.5602E+00 4.0732E+00 -2.0060E+00 4.1780E-01
S3 -5.0933E-02 3.4336E-02 7.2497E-02 -1.4456E-01 1.6738E-01 -2.2480E-01 3.4018E-01 -2.8934E-01 9.6828E-02
S4 -9.1830E-02 -4.5857E-02 9.4846E-01 -5.2828E+00 1.7749E+01 -3.7178E+01 4.7381E+01 -3.3567E+01 1.0178E+01
S5 -3.1141E-02 -2.1757E-01 1.2043E+00 -6.7303E+00 2.2552E+01 -4.6913E+01 5.9242E+01 -4.1515E+01 1.2426E+01
S6 3.9748E-02 -2.1384E-01 7.6609E-01 -3.2787E+00 8.4701E+00 -1.3580E+01 1.3457E+01 -7.5138E+00 1.8052E+00
S9 -1.8679E-02 7.9287E-02 -5.5386E-01 1.9345E+00 -4.4686E+00 6.4060E+00 -5.4411E+00 2.5312E+00 -5.0668E-01
S10 -7.6829E-02 8.2879E-02 -2.2829E-01 6.2049E-01 -1.1130E+00 1.2423E+00 -7.9941E-01 2.6866E-01 -3.6490E-02
S11 -4.1761E-02 -5.9881E-02 3.4711E-02 -4.7600E-02 8.4006E-02 -8.2150E-02 3.9378E-02 -7.2400E-03 0.0000E+00
S12 4.4662E-02 -1.4064E-01 9.9308E-02 -5.5820E-02 3.2250E-02 -1.5250E-02 4.2170E-03 -4.8000E-04 0.0000E+00
S13 1.1753E-01 -2.4292E-01 2.1790E-01 -1.4978E-01 7.3680E-02 -2.3080E-02 4.0900E-03 -3.1000E-04 0.0000E+00
S14 4.6136E-02 -1.1560E-01 8.9463E-02 -4.3420E-02 1.3349E-02 -2.5000E-03 2.6000E-04 -1.2000E-05 0.0000E+00
S15 -1.3012E-01 1.2406E-02 2.6005E-02 -1.5710E-02 4.4050E-03 -6.8000E-04 5.4800E-05 -1.8000E-06 0.0000E+00
S16 -2.0713E-01 9.5513E-02 -3.6570E-02 9.6610E-03 -1.6400E-03 1.6800E-04 -9.3000E-06 2.1500E-07 0.0000E+00
Watch 26
Table 27 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in example 9.
f1(mm) 3.38 f7(mm) -11.23
f2(mm) -10.83 f8(mm) -10.51
f3(mm) 10.19 f(mm) 4.09
f4(mm) 107.65 TTL(mm) 4.87
f5(mm) -10.27 ImgH(mm) 3.37
f6(mm) 17.61 FOV(°) 77.0
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, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has positive power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a concave image-side surface S10. The sixth lens element E6 has positive power, and has a convex object-side surface S11 and a convex image-side surface S12. The seventh lens element E7 has negative power, and has a concave object-side surface S13 and a concave image-side surface S14. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000341
Watch 28
As is clear 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 eighth lens element E8 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.
Figure BDA0001477558210000342
Figure BDA0001477558210000351
Watch 29
Table 30 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in example 10.
f1(mm) 3.37 f7(mm) -9.50
f2(mm) -9.90 f8(mm) -10.37
f3(mm) 10.35 f(mm) 4.16
f4(mm) 69.99 TTL(mm) 4.94
f5(mm) -9.67 ImgH(mm) 3.23
f6(mm) 13.47 FOV(°) 73.4
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 first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has negative power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has 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. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000361
Figure BDA0001477558210000371
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 eighth lens element E8 are aspheric. Table 32 shows high-order term coefficients that can be used for each aspherical mirror surface in example 11, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Flour mark A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 -5.2706E-03 2.8474E-02 -8.1630E-02 1.3249E-01 -1.3360E-01 8.3298E-02 -3.1300E-02 6.3970E-03 -5.4000E-04
S2 3.6694E-02 -1.4793E-01 3.0180E-01 -3.9320E-01 3.3280E-01 -1.8294E-01 6.2676E-02 -1.2110E-02 1.0050E-03
S3 3.4286E-02 -2.1268E-01 4.7118E-01 -6.6025E-01 6.4417E-01 -4.2959E-01 1.8622E-01 -4.6930E-02 5.1830E-03
S4 -4.4905E-02 -1.1634E-01 3.3003E-01 -5.4214E-01 5.3926E-01 -2.5384E-01 -1.7040E-02 6.7369E-02 -1.9330E-02
S5 -2.8450E-02 1.1177E-02 -2.8739E-01 9.2935E-01 -1.7290E+00 2.0054E+00 -1.4168E+00 5.5717E-01 -9.3830E-02
S6 7.5756E-03 -1.7249E-01 -8.9470E-02 7.8877E-01 -1.2121E+00 9.3360E-01 -3.9622E-01 8.6643E-02 -7.3100E-03
S7 1.8016E-03 -1.2502E-01 -1.9415E-01 9.8673E-01 -1.5301E+00 1.2749E+00 -6.1470E-01 1.6392E-01 -1.8690E-02
S8 -3.4900E-02 -5.1770E-02 1.2243E-01 -1.5273E-01 -8.1400E-02 3.4824E-01 -3.1239E-01 1.2127E-01 -1.7740E-02
S9 -1.4289E-02 -1.3265E-01 1.3800E-04 7.0894E-01 -1.8140E+00 2.2440E+00 -1.5072E+00 5.2552E-01 -7.4580E-02
S10 6.0572E-02 -3.2977E-01 5.7892E-01 -6.8772E-01 5.2672E-01 -2.1495E-01 2.2372E-02 1.1865E-02 -2.8800E-03
S11 6.9953E-02 -1.9684E-01 2.7103E-01 -2.8396E-01 1.8401E-01 -6.8340E-02 1.2488E-02 -8.2000E-04 0.0000E+00
S12 -3.8418E-03 -7.5850E-02 1.6492E-01 -2.0229E-01 1.3573E-01 -5.1770E-02 1.0527E-02 -8.9000E-04 0.0000E+00
S13 1.5100E-03 -9.9230E-02 9.8889E-02 -6.1790E-02 1.9899E-02 -2.8200E-03 3.2100E-05 2.0300E-05 0.0000E+00
S14 3.5272E-02 -8.2460E-02 5.9140E-02 -2.6870E-02 7.4830E-03 -1.2300E-03 1.0800E-04 -3.9000E-06 0.0000E+00
S15 -1.6444E-01 2.8983E-02 1.3464E-02 -8.5000E-03 2.1560E-03 -3.0000E-04 2.1600E-05 -6.6000E-07 0.0000E+00
S16 -2.0950E-01 9.2411E-02 -3.3790E-02 8.9570E-03 -1.5600E-03 1.6600E-04 -9.8000E-06 2.4400E-07 0.0000E+00
Watch 32
Table 33 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in example 11.
Figure BDA0001477558210000372
Figure BDA0001477558210000381
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 first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a concave image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has 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. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000391
Watch 34
As can be seen from table 34, in example 12, both the object-side surface and the image-side surface of any one of the first lens element E1 through the eighth lens element E8 are aspheric. Table 35 shows the high-order term coefficients that can be used for each aspherical mirror surface in example 12, wherein each aspherical mirror surface type can be defined by formula (1) given in example 1 above.
Figure BDA0001477558210000392
Figure BDA0001477558210000401
Watch 35
Table 36 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in example 12.
f1(mm) 3.93 f7(mm) 31.56
f2(mm) -7.91 f8(mm) -5.00
f3(mm) 8.19 f(mm) 4.45
f4(mm) -23.43 TTL(mm) 5.61
f5(mm) 255.79 ImgH(mm) 3.57
f6(mm) 60.10 FOV(°) 75.9
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 first lens E1, a stop STO, a second lens E2, a third lens E3, a fourth lens E4, a fifth lens E5, a sixth lens E6, a seventh lens E7, an eighth lens E8, a filter E9, and an image forming surface S19.
The first lens element E1 has positive power, and has a convex object-side surface S1 and a convex image-side surface S2. The second lens element E2 has negative power, and has a convex object-side surface S3 and a concave image-side surface S4. The third lens element E3 has positive power, and has a convex object-side surface S5 and a convex image-side surface S6. The fourth lens element E4 has negative power, and has a concave object-side surface S7 and a convex image-side surface S8. The fifth lens element E5 has positive power, and has a concave object-side surface S9 and a convex image-side surface S10. The sixth lens element E6 has negative power, and has a 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. The eighth lens element E8 has negative power, and has a convex object-side surface S15 and a concave image-side surface S16. Filter E9 has an object side S17 and an image side S18. The light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
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 BDA0001477558210000411
Figure BDA0001477558210000421
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 eighth lens element E8 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 2.3555E-03 1.1690E-04 -8.4000E-05 6.9400E-04 -1.8600E-03 8.4400E-04 3.6200E-05 -2.8000E-04 3.2100E-05
S2 -2.1921E-02 6.3546E-02 -9.8830E-02 9.8506E-02 -6.6550E-02 2.8728E-02 -8.3800E-03 1.9320E-03 -3.2000E-04
S3 -5.7573E-02 1.0311E-01 -1.1708E-01 8.4318E-02 1.6019E-02 -9.9670E-02 9.6328E-02 -4.2020E-02 7.1970E-03
S4 -7.6695E-02 4.9447E-02 1.5037E-02 -1.7507E-01 4.1343E-01 -5.0574E-01 3.4232E-01 -1.1304E-01 1.1858E-02
S5 -4.5059E-02 -5.8955E-02 6.2542E-02 -2.0200E-03 -2.7721E-01 6.4396E-01 -6.8690E-01 3.6896E-01 -8.1330E-02
S6 1.6106E-01 -8.6954E-01 9.6411E-01 7.0240E-01 -3.2258E+00 4.1372E+00 -2.7751E+00 9.8118E-01 -1.4301E-01
S7 1.9380E-01 -7.4959E-01 2.3952E-01 2.6056E+00 -6.0068E+00 6.6374E+00 -4.1956E+00 1.4593E+00 -2.1656E-01
S8 -2.3619E-01 8.5346E-01 -2.2331E+00 3.7525E+00 -4.1172E+00 2.9356E+00 -1.3262E+00 3.4507E-01 -3.8470E-02
S9 -2.7497E-01 9.9765E-01 -2.0927E+00 2.6505E+00 -2.1417E+00 1.1228E+00 -3.9467E-01 9.5156E-02 -1.2920E-02
S10 -7.5114E-02 3.6968E-01 -7.7497E-01 8.8641E-01 -6.0000E-01 2.3274E-01 -4.2760E-02 3.4900E-04 7.2700E-04
S11 -3.7039E-02 6.0823E-02 -2.6042E-01 4.2275E-01 -4.2854E-01 2.6648E-01 -9.3600E-02 1.4028E-02 0.0000E+00
S12 7.1172E-02 -1.6636E-01 1.5744E-01 -1.0420E-01 4.6410E-02 -1.3060E-02 2.0820E-03 -1.4000E-04 0.0000E+00
S13 8.5354E-02 -1.9226E-01 1.8054E-01 -1.1766E-01 4.9711E-02 -1.2580E-02 1.7250E-03 -9.9000E-05 0.0000E+00
S14 3.6664E-02 -8.5386E-02 6.1173E-02 -2.8200E-02 8.0900E-03 -1.3500E-03 1.2000E-04 -4.3000E-06 0.0000E+00
S15 -1.2752E-01 1.2634E-02 1.8708E-02 -1.0670E-02 2.8570E-03 -4.3000E-04 3.4200E-05 -1.1000E-06 0.0000E+00
S16 -1.9632E-01 8.2797E-02 -2.9400E-02 7.6610E-03 -1.3300E-03 1.4200E-04 -8.3000E-06 2.0700E-07 0.0000E+00
Watch 38
Table 39 gives the effective focal lengths f1 to f8 of the respective lenses, the total effective focal length f of the optical imaging lens, the distance TTL on the optical axis from the center of the object-side surface S1 of the first lens E1 to the imaging surface S19, half ImgH of the diagonal length of the effective pixel area on the imaging surface S19, and the full field angle FOV of the optical imaging lens in example 13.
Figure BDA0001477558210000422
Figure BDA0001477558210000431
Watch 39
In summary, examples 1 to 13 each satisfy the relationship shown in table 40.
Figure BDA0001477558210000432
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 (29)

1. The optical imaging lens sequentially comprises from an object side to an image side along an optical axis: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has a negative optical power;
the third lens has positive optical power;
the fourth lens has positive focal power or negative focal power, the object side surface of the fourth lens is a concave surface, and the image side surface of the fourth lens is a convex surface;
the fifth lens has positive focal power or negative focal power;
the sixth lens has positive focal power or negative focal power, and the object side surface of the sixth lens is a convex surface;
the seventh lens has positive optical power or negative optical power; and
the eighth lens has a negative optical power,
at least one of an object side surface of the first lens and an image side surface of the eighth lens is an aspherical mirror surface,
the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens meet 0.5 < f1/f < 1.0.
2. The optical imaging lens of claim 1, wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD ≦ 2.0.
3. The optical imaging lens of claim 1, 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 an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH ≦ 1.65.
4. The optical imaging lens of claim 1 wherein the full field angle FOV of the optical imaging lens satisfies 70 ° ≦ FOV ≦ 81 °.
5. The optical imaging lens according to any one of claims 1 to 4, characterized in that an effective focal length f2 of the second lens and a total effective focal length f of the optical imaging lens satisfy-3.5 ≦ f2/f ≦ -1.5.
6. The optical imaging lens according to any one of claims 1 to 4, characterized in that an effective focal length f3 of the third lens and a total effective focal length f of the optical imaging lens satisfy 1.5 ≦ f3/f ≦ 3.0.
7. The optical imaging lens according to any one of claims 1 to 4, characterized in that an effective focal length f8 of the eighth lens and a total effective focal length f of the optical imaging lens satisfy-5.0 ≦ f8/f ≦ -1.0.
8. The optical imaging lens according to any one of claims 1 to 4, characterized in that a radius of curvature R3 of an object-side surface of the second lens and a radius of curvature R4 of an image-side surface of the second lens satisfy 1.5 ≦ R3/R4 ≦ 3.0.
9. The optical imaging lens according to any one of claims 1 to 4, characterized in that a radius of curvature R1 of an object-side surface of the first lens and a radius of curvature R6 of an image-side surface of the third lens satisfy-0.5 < R1/R6 < 0.
10. The optical imaging lens of any one of claims 1 to 4, wherein a central thickness CT3 of the third lens on the optical axis and a central thickness CT4 of the fourth lens on the optical axis satisfy 1.0 < CT3/CT4 < 2.5.
11. The optical imaging lens according to any one of claims 1 to 4, characterized in that a radius of curvature R9 of an object side surface of the fifth lens and a radius of curvature R11 of an object side surface of the sixth lens satisfy-2.5 < R9/R11 < 0.
12. The optical imaging lens according to any one of claims 1 to 4, characterized in that a radius of curvature R15 of an object-side surface of the eighth lens and a radius of curvature R16 of an image-side surface of the eighth lens satisfy (R15-R16)/(R15+ R16) < 1.0.
13. The optical imaging lens of any one of claims 1 to 4, wherein a central thickness CT1 of the first lens on the optical axis and a central thickness CT2 of the second lens on the optical axis satisfy 2.0 < CT1/CT2 < 4.0.
14. The optical imaging lens sequentially comprises from an object side to an image side along an optical axis: a first lens element, a second lens element, a third lens element, a fourth lens element, a fifth lens element, a sixth lens element, a seventh lens element, and an eighth lens element,
the first lens has positive focal power, and the object side surface of the first lens is a convex surface;
the second lens has a negative optical power;
the third lens has positive optical power;
the fourth lens, the fifth lens and the seventh lens all have positive optical power or negative optical power;
the sixth lens has positive focal power or negative focal power, and the object side surface of the sixth lens is a convex surface;
the eighth lens has a negative optical power;
at least one of an object side surface of the first lens and an image side surface of the eighth lens is an aspherical mirror surface,
wherein the total effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy f/EPD not more than 2.0,
the effective focal length f1 of the first lens and the total effective focal length f of the optical imaging lens meet 0.5 < f1/f < 1.0.
15. The optical imaging lens of claim 14, wherein the effective focal length f2 of the second lens and the total effective focal length f of the optical imaging lens satisfy-3.5 ≦ f2/f ≦ -1.5.
16. The optical imaging lens of claim 15, wherein a radius of curvature R3 of the object-side surface of the second lens and a radius of curvature R4 of the image-side surface of the second lens satisfy 1.5 ≦ R3/R4 ≦ 3.0.
17. The optical imaging lens of claim 16, wherein the object side surface of the second lens is convex and the image side surface of the second lens is concave.
18. The optical imaging lens of claim 14, wherein the effective focal length f3 of the third lens and the total effective focal length f of the optical imaging lens satisfy 1.5 ≦ f3/f ≦ 3.0.
19. The optical imaging lens of claim 14, wherein the image side surface of the third lens is convex.
20. The optical imaging lens of claim 19, wherein a radius of curvature R1 of the object-side surface of the first lens and a radius of curvature R6 of the image-side surface of the third lens satisfy-0.5 < R1/R6 < 0.
21. The optical imaging lens of claim 19, wherein the fourth lens element has a concave object-side surface and a convex image-side surface.
22. The optical imaging lens of claim 14, wherein the object side surface of the fifth lens is concave.
23. The optical imaging lens of claim 22, wherein a radius of curvature R9 of the object-side surface of the fifth lens and a radius of curvature R11 of the object-side surface of the sixth lens satisfy-2.5 < R9/R11 < 0.
24. The optical imaging lens of claim 14, wherein the effective focal length f8 of the eighth lens and the total effective focal length f of the optical imaging lens satisfy-5.0 ≦ f8/f ≦ -1.0.
25. The optical imaging lens of claim 24, wherein a radius of curvature R15 of an object-side surface of the eighth lens and a radius of curvature R16 of an image-side surface of the eighth lens satisfy (R15-R16)/(R15+ R16) < 1.0.
26. The optical imaging lens of any one of claims 14 to 25 wherein the full field angle FOV of the optical imaging lens satisfies 70 ° ≦ FOV ≦ 81 °.
27. The optical imaging lens of any one of claims 14 to 25, 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 an optical axis and a half ImgH of a diagonal length of an effective pixel area on the imaging surface of the optical imaging lens satisfy TTL/ImgH ≦ 1.65.
28. The optical imaging lens of claim 27, wherein a central thickness CT1 of the first lens element on the optical axis and a central thickness CT2 of the second lens element on the optical axis satisfy 2.0 < CT1/CT2 < 4.0.
29. The optical imaging lens of claim 27, wherein a central thickness CT3 of the third lens element on the optical axis and a central thickness CT4 of the fourth lens element on the optical axis satisfy 1.0 < CT3/CT4 < 2.5.
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US16/644,965 US11662555B2 (en) 2017-11-22 2018-08-14 Optical imaging lens including eight lenses of +−++−+−−, +−++−−+−, +−++−−−−, +−++−++−, +−+−−+−−, +−+−−−−−, +−+−++−− +−+−−++−, +−+−+++− or +−+−+−−− refractive powers

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