CN107703608B - Optical imaging lens - Google Patents

Optical imaging lens Download PDF

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Publication number
CN107703608B
CN107703608B CN201711170666.1A CN201711170666A CN107703608B CN 107703608 B CN107703608 B CN 107703608B CN 201711170666 A CN201711170666 A CN 201711170666A CN 107703608 B CN107703608 B CN 107703608B
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lens
optical imaging
image
imaging lens
convex
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CN107703608A (en
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周鑫
杨健
闻人建科
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Zhejiang Sunny Optics Co Ltd
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Zhejiang Sunny Optics Co Ltd
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Priority to CN202111427759.4A priority Critical patent/CN114137695B/en
Priority to CN202111413181.7A priority patent/CN114137694B/en
Priority to CN201711170666.1A priority patent/CN107703608B/en
Publication of CN107703608A publication Critical patent/CN107703608A/en
Priority to PCT/CN2018/110435 priority patent/WO2019100868A1/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

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

Abstract

The application discloses an optical imaging lens, which sequentially comprises 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 with focal power from an object side to an image side along an optical axis, wherein: the image side surface of the second lens is a concave surface; the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface and the image side surface is a convex surface; the object side surface of the seventh lens is a convex surface and the image side surface is a concave surface; and the optical power of the eighth lens is negative optical 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
The photosensitive element of a conventional image forming apparatus is typically a CCD (Charge-Coupled Device) or CMOS (Complementary Metal-Oxide Semiconductor, complementary metal oxide semiconductor element). The improvement in performance and the reduction in size of the CCD and COMS devices provide advantages for the development of optical imaging lenses. Meanwhile, the trend of miniaturization of electronic devices equipped with imaging devices, such as smartphones, has put higher demands on miniaturization and image quality improvement of optical imaging lenses equipped with imaging devices.
Disclosure of Invention
The application provides an optical imaging lens with eight lenses. The optical imaging lens sequentially comprises 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 with focal power from an object side to an image side along an optical axis, wherein: the image side surface of the second lens is a concave surface; the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface and the image side surface is a convex surface; the object side surface of the seventh lens is a convex surface and the image side surface is a concave surface; and the optical power of the eighth lens is negative optical power.
In one embodiment, the object-side surface of the first lens is convex and the image-side surface is concave.
In one embodiment, the object side surface of the second lens is convex.
In one embodiment, the image side of the third lens is concave.
In one embodiment, the object-side surface of the eighth lens element is convex and the image-side surface is concave.
In one embodiment, the sagittal height SAG82 of the image side surface of the eighth lens at the maximum effective aperture satisfies the following relationship with the center thickness CT8 of the eighth lens: 3.0< SAG82/CT8< -1.0.
In one embodiment, the center thickness CT3 of the third lens and the center thickness CT4 of the fourth lens satisfy the following relationship: CT3/CT4 is more than or equal to 0.5 and less than or equal to 1.0.
In one embodiment, the on-axis distance TTL from the object side center of the first lens to the imaging surface of the optical imaging lens and the half-diagonal length ImgH of the effective pixel area on the imaging surface satisfy the following relationship: TTL/ImgH is less than or equal to 1.6.
In one embodiment, the effective focal length f8 of the eighth lens and the center thickness CT8 of the eighth lens satisfy the following relationship: 9.0< |f8/CT8| <13.0.
In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens satisfy the following relationship: f/EPD is less than or equal to 2.0.
In one embodiment, the effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens satisfy the following relationship: 2.0< f/R1<2.5.
In one embodiment, the radius of curvature R15 of the object side surface of the eighth lens and the radius of curvature R16 of the image side surface of the eighth lens satisfy the following relationship: 1.0< (R15+R16)/(R15-R16) <2.0.
In one embodiment, the effective focal length f8 of the eighth lens and the radius of curvature R16 of the image side surface of the eighth lens satisfy the following relationship: -3.0< f8/R16< -2.0.
In one embodiment, the effective focal length f of the optical imaging lens satisfies the following relationship with the effective focal length f1 of the first lens and the effective focal length f2 of the second lens: 0.5< |f/f1|+|f/f2| <1.5.
In one embodiment, the effective focal length f of the optical imaging lens and the effective focal length f8 of the eighth lens satisfy the following relationship: 1.0< |f/f8| <1.5.
In one embodiment, the air interval T45 on the optical axis of the fourth lens and the fifth lens and the air interval T67 on the optical axis of the sixth lens and the seventh lens satisfy the following relationship: 0.5< T45/T67<1.5.
In one embodiment, the effective focal length f of the optical imaging lens and the radius of curvature R16 of the image side surface of the eighth lens satisfy the following relationship: 2.0< f/R16<3.0.
In one embodiment, the center thickness CT4 of the fourth lens and the air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy the following relationship: 2.5< CT4/T45<5.5.
Another aspect of the present application provides an optical imaging lens having eight lenses. The optical imaging lens sequentially comprises 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 with focal power from an object side to an image side along an optical axis, wherein: the focal power of the second lens is positive focal power, and the image side surface of the second lens is concave; the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface and the image side surface is a convex surface; the object side surface of the seventh lens is a convex surface and the image side surface is a concave surface; the optical power of the eighth lens is negative optical power.
Another aspect of the present application provides an optical imaging lens having eight lenses. The optical imaging lens sequentially comprises 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 with focal power from an object side to an image side along an optical axis, wherein: the focal power of the second lens is positive focal power, and the image side surface of the second lens is concave; the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface and the image side surface is a convex surface; the object side surface of the seventh lens is a convex surface and the image side surface is a concave surface; the optical power of the eighth lens is negative, and the sagittal height SAG82 of the image side surface of the eighth lens at the maximum effective aperture and the center thickness CT8 of the eighth lens satisfy the following relationship: 3.0< SAG82/CT8< -1.0.
Another aspect of the present application provides an optical imaging lens having eight lenses. The optical imaging lens sequentially comprises 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 with focal power from an object side to an image side along an optical axis, wherein: the focal power of the second lens is positive focal power, and the image side surface of the second lens is concave; the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface and the image side surface is a convex surface; the object side surface of the seventh lens is a convex surface and the image side surface is a concave surface; the optical power of the eighth lens is negative optical power, and the center thickness CT3 of the third lens and the center thickness CT4 of the fourth lens satisfy the following relationship: CT3/CT4 is more than or equal to 0.5 and less than or equal to 1.0.
Another aspect of the present application provides an optical imaging lens having eight lenses. The optical imaging lens sequentially comprises 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 with focal power from an object side to an image side along an optical axis, wherein: the focal power of the second lens is positive focal power, and the image side surface of the second lens is concave; the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface and the image side surface is a convex surface; the object side surface of the seventh lens is a convex surface and the image side surface is a concave surface; the optical power of the eighth lens is negative, and the on-axis distance TTL from the object side center of the first lens to the imaging surface of the optical imaging lens and the half-diagonal length ImgH of the effective pixel area on the imaging surface satisfy the following relationship: TTL/ImgH is less than or equal to 1.6.
The application adopts eight-piece type lenses, and the optical imaging lens has at least one beneficial effect of ultra-thin, miniaturization, large aperture, high imaging quality and the like by reasonably distributing the surface type of each lens, the center thickness of each lens, the axial spacing among 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, taken in conjunction with the accompanying drawings. In the drawings:
Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application;
fig. 2A to 2D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 1;
fig. 3 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 2 of the present application;
fig. 4A to 4D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 2;
fig. 5 shows a schematic structural view of an optical imaging lens according to embodiment 3 of the present application;
fig. 6A to 6D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 3;
fig. 7 shows a schematic configuration diagram of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 4;
fig. 9 shows a schematic configuration diagram of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 5;
Fig. 11 shows a schematic structural view of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 6;
fig. 13 is a schematic diagram showing the structure of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 7;
fig. 15 shows a schematic structural view of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 8;
fig. 17 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 9 of the present application;
fig. 18A to 18D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 9;
fig. 19 is a schematic diagram showing the structure of 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 magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 10;
Fig. 21 shows a schematic configuration diagram of an optical imaging lens according to embodiment 11 of the present application;
fig. 22A to 22D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 11;
fig. 23 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 12 of the present application;
fig. 24A to 24D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 12;
fig. 25 is a schematic diagram showing the structure of an optical imaging lens according to embodiment 13 of the present application;
fig. 26A to 26D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 13;
fig. 27 is a schematic view showing the structure of an optical imaging lens according to embodiment 14 of the present application; and
fig. 28A to 28D show an on-axis chromatic aberration curve, an astigmatism curve, a distortion curve, and a magnification chromatic aberration curve, respectively, of the optical imaging lens of embodiment 14.
Detailed Description
For a better understanding of the application, various aspects of the 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 application and is not intended to limit the scope of the application in any way. Like reference numerals refer to like elements throughout the specification. The expression "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that in the present specification, the expressions of first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any limitation on the feature. Accordingly, a first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.
In the drawings, the thickness, size, and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shape shown in the drawings is shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The figures are merely examples and are not drawn to scale.
Herein, the paraxial region refers to a region near the optical axis. If the lens surface is convex and the convex position is not defined, then the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is concave at least in the paraxial region. The surface of each lens closest to the object is referred to as the object side surface, and the surface of each lens closest to the imaging surface is referred to as the image side surface.
It will be further understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the 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, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
The features, principles, and other aspects of the present application are described in detail below.
The optical imaging lens according to the exemplary embodiment of the present application may include, for example, eight lenses having optical power, 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 the object side to the image side along the optical axis.
In an exemplary embodiment, the image-side surface of the second lens is concave; the image side surface of the fifth lens is a convex surface; the object side surface of the sixth lens is a concave surface and the image side surface is a convex surface; the object side surface of the seventh lens is a convex surface and the image side surface is a concave surface; and the optical power of the eighth lens is negative optical power.
In an exemplary embodiment, the area shape of each lens may be further defined as follows: the object side surface of the first lens is a convex surface and the image side surface is a concave surface; the object side surface of the second lens is a convex surface; the image side surface of the third lens is a concave surface; and/or the object side surface of the eighth lens is convex and the image side surface is concave.
In an exemplary embodiment, the sagittal height SAG82 of the image side surface of the eighth lens at the maximum effective aperture and the center thickness CT8 of the eighth lens may satisfy the following relationship: 3.0< SAG82/CT8< -1.0, more specifically, -2.44 < SAG82/CT8< 1.66. By adjusting the relation between the sagittal height and the thickness of the lens, the angle of the principal ray of the optical imaging lens can be adjusted, so that the relative brightness of the optical imaging lens can be effectively improved, and the image surface definition is improved.
In an exemplary embodiment, the center thickness CT3 of the third lens and the center thickness CT4 of the fourth lens may satisfy the following relationship: CT3/CT4 is more specifically 0.68.ltoreq.CT 3/CT 4.ltoreq.1.0. Through reasonably distributing the center thicknesses of the third lens and the fourth lens, the balance capacity of the optical imaging lens to coma can be improved.
In an exemplary embodiment, the on-axis distance TTL from the object side center of the first lens to the imaging surface of the optical imaging lens and the half-diagonal length ImgH of the effective pixel area on the imaging surface may satisfy the following relationship: TTL/ImgH is less than or equal to 1.6. The size of the optical imaging lens can be effectively compressed by reasonably controlling the ratio of TTL to ImgH, so that the ultra-thin characteristic of the lens is ensured, and the miniaturization requirement of the imaging device is further met.
In an exemplary embodiment, the effective focal length f8 of the eighth lens and the center thickness CT8 of the eighth lens may satisfy the following relationship: 9.0< |f8/CT8| <13.0, more specifically 10.03|f8/CT 8| < 12.10. The rear end size of the optical imaging lens can be effectively compressed by reasonably selecting the ratio of the effective focal length of the eighth lens to the center thickness of the eighth lens, thereby being beneficial to realizing miniaturization.
In one embodiment, the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens may satisfy the following relationship: F/EPD is less than or equal to 2.0, more specifically f/EPD is less than or equal to 1.97. By configuring a smaller F-number, the light flux can be increased, so that the optical imaging lens has a large aperture advantage, and the imaging effect in a dark environment can be enhanced while the aberration of the marginal field of view can be reduced.
In one embodiment, the effective focal length f of the optical imaging lens and the radius of curvature R1 of the object side surface of the first lens may satisfy the following relationship: 2.0< f/R1<2.5, more specifically 2.14.ltoreq.f/R1.ltoreq.2.26. By reasonably setting the curvature radius of the first lens, aberration can be easily balanced, and the imaging performance of the optical imaging lens can be improved.
In one embodiment, the radius of curvature R15 of the object-side surface of the eighth lens and the radius of curvature R16 of the image-side surface of the eighth lens may satisfy the following relationship: 1.0< (R15+R16)/(R15-R16) <2.0, more specifically, 1.41.ltoreq.R15+R16)/(R15-R16).ltoreq.1.46. By reasonably setting the curvature radiuses of the object side surface and the image side surface of the eighth lens, the optical imaging lens can be better matched with the chief ray angle of the photosensitive chip positioned at the rear end of the optical imaging lens.
In one embodiment, the effective focal length f8 of the eighth lens and the curvature radius R16 of the image side surface of the eighth lens may satisfy the following relationship: -3.0< f8/R16< -2.0, more specifically, -2.33.ltoreq.f8/R16.ltoreq.2.27. By reasonably setting the curvature radius of the eighth lens, the optical imaging lens can have better astigmatism balancing capability.
In one embodiment, the effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens and the effective focal length f2 of the second lens may satisfy the following relationship: 0.5< |f/f1|+|f/f2| <1.5, more specifically 0.84+|f/f1|+|f/f2|1.39. By reasonably distributing the effective focal lengths of the first lens and the second lens, the deflection angle of light rays can be reduced, and the sensitivity of the optical imaging lens is reduced.
In one embodiment, the effective focal length f of the optical imaging lens and the effective focal length f8 of the eighth lens may satisfy the following relationship: 1.0< |f8| <1.5, more specifically 1.05.ltoreq. |f8|.ltoreq.1.19. By reasonably selecting the effective focal length of the eighth lens, the optical imaging lens can have better field curvature balancing capability.
In one embodiment, the air interval T45 on the optical axis of the fourth lens and the fifth lens and the air interval T67 on the optical axis of the sixth lens and the seventh lens may satisfy the following relationship: 0.5< T45/T67<1.5, more specifically 0.79.ltoreq.T45/T67.ltoreq.1.35. By reasonably controlling the ratio between the air interval of the fourth lens and the fifth lens on the optical axis and the air interval of the sixth lens and the seventh lens on the optical axis, the optical imaging lens has better capacity of balancing dispersion and distortion.
In one embodiment, the effective focal length f of the optical imaging lens and the radius of curvature R16 of the image side surface of the eighth lens may satisfy the following relationship: 2.0< f/R16<3.0, more specifically 2.45.ltoreq.f/R16.ltoreq.2.72. By reasonably setting the relation between the curvature radius of the image side surface of the optical imaging lens and the curvature radius of the image side surface of the eighth lens, the optical imaging lens can be easily matched with a common photosensitive chip.
In one embodiment, the center thickness CT4 of the fourth lens and the air interval T45 of the fourth lens and the fifth lens on the optical axis may satisfy the following relationship: 2.5< CT4/T45<5.5, more specifically 2.96.ltoreq.CT 4/T45.ltoreq.5.22. The optical imaging lens has better field curvature and dispersion balancing capability by reasonably controlling the ratio between the center thickness of the fourth lens and the air interval of the fourth lens and the fifth lens on the optical axis.
In an exemplary embodiment, the optical imaging lens may further include at least one diaphragm to enhance the imaging quality of the lens. For example, a diaphragm may be provided at the first lens.
Optionally, the optical imaging lens may further include a filter for correcting color deviation and/or a protective glass for protecting a photosensitive element located on the imaging surface.
The optical imaging lens according to the above 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 shape, the center thickness of each lens, the axial spacing between each lens and the like, the volume of the lens can be effectively reduced, the sensitivity of the lens can be reduced, and the processability of the lens can be improved, so that the optical imaging lens is more beneficial to production and processing and is applicable to portable electronic products. Meanwhile, the optical imaging lens configured as described above has advantageous effects such as ultra-thin, miniaturization, large aperture, high imaging quality, and the like.
In an embodiment of the present application, at least one of the mirrors of each lens is an aspherical mirror. The aspherical lens is characterized in that: the curvature varies continuously from the center of the lens to the periphery of the lens. Unlike a spherical lens having a constant curvature from the center of the lens to the periphery of the lens, an aspherical lens has a better radius of curvature characteristic, and has advantages of improving distortion aberration and improving astigmatic aberration. By adopting the aspherical lens, aberration occurring at the time of imaging can be eliminated as much as possible, thereby improving imaging quality.
However, it will be appreciated by those skilled in the art that the number of lenses making up the optical imaging lens can be varied to achieve the various results and advantages described in this specification without departing from the technical solution claimed in the present application. For example, although eight lenses are described as an example 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 the optical imaging lens applicable to the above-described embodiments are further described below with reference to the accompanying drawings.
Example 1
An optical imaging lens according to embodiment 1 of the present application is described below with reference to fig. 1 to 2D. Fig. 1 shows a schematic configuration diagram of an optical imaging lens according to embodiment 1 of the present application.
As shown in fig. 1, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 1, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 1
As can be seen from table 1, the object side surface and the image side surface of any one of the first lens element E1 to the eighth lens element E8 are aspheric. In the present embodiment, the surface shape x of each aspherical lens can be defined by, but not limited to, the following aspherical formula:
wherein x is the distance vector height from the vertex of the aspheric surface when the aspheric surface is at the position with the height h along the optical axis direction; c is the paraxial curvature of the aspheric surface, c=1/R (i.e., paraxial curvature c is the inverse of radius of curvature R in table 1 above); k is the conic coefficient (given in table 1); ai is the correction coefficient of the aspherical i-th order. Table 2 below shows the higher order coefficients A that can be used for each of the aspherical mirrors S1-S16 in example 1 4 、A 6 、A 8 、A 10 、A 12 、A 14 、A 16 、A 18 And A 20 。
TABLE 2
Table 3 gives the effective focal lengths f1 to f8 of the respective lenses in embodiment 1, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens (i.e., the distance on the optical axis from the center of the object side surface S1 of the first lens E1 to the imaging surface S19), and the half-diagonal length ImgH of the effective pixel area on the imaging surface S19 of the optical imaging lens.
f1(mm) 7.94 f(mm) 3.72
f2(mm) 5.14 TTL(mm) 4.67
f3(mm) -8.83 ImgH(mm) 2.93
f4(mm) -376.06
f5(mm) 10.28
f6(mm) -14.91
f7(mm) 5.35
f8(mm) -3.55
TABLE 3 Table 3
In embodiment 1, the optical imaging lens has the following parameter configuration.
The relationship between the sagittal height SAG82 of the image side surface of the eighth lens at the maximum effective aperture and the center thickness CT8 of the eighth lens is: SAG82/CT8 = -1.87;
the relationship between the center thickness CT3 of the third lens and the center thickness CT4 of the fourth lens is: CT3/CT4 = 1.0;
the relationship between the on-axis distance TTL from the object side center of the first lens to the imaging surface of the optical imaging lens and the half-diagonal length ImgH of the effective pixel area on the imaging surface is: TTL/imgh=1.59;
the relationship between the effective focal length f8 of the eighth lens and the center thickness CT8 of the eighth lens is: |f8/CT 8|=10.03;
the relationship between the effective focal length f of the optical imaging lens and the entrance pupil diameter EPD of the optical imaging lens is: f/epd=1.75;
the relation between the effective focal length f of the optical imaging lens and the curvature radius R1 of the object side surface of the first lens is: fr1=2.14;
the relationship between the radius of curvature R15 of the object side surface of the eighth lens and the radius of curvature R16 of the image side surface of the eighth lens is: (r15+r16)/(r15—r16) =1.46;
the relationship between the effective focal length f8 of the eighth lens and the radius of curvature R16 of the image side surface of the eighth lens is: f8/r16= -2.33;
The relation between the effective focal length f of the optical imaging lens and the effective focal length f1 of the first lens and the effective focal length f2 of the second lens is: |f/f1|+|f/f 2|=1.19;
the relation between the effective focal length f of the optical imaging lens and the effective focal length f8 of the eighth lens is: i f/f8=1.05;
the relationship between the air interval T45 on the optical axis of the fourth lens and the fifth lens and the air interval T67 on the optical axis of the sixth lens and the seventh lens is: t45/t67=1.03;
the relationship between the effective focal length f of the optical imaging lens and the radius of curvature R16 of the image side surface of the eighth lens is: fr16=2.45; and
the relationship between the center thickness CT4 of the fourth lens and the air interval T45 of the fourth and fifth lenses on the optical axis is: CT 4/t45=3.88.
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 converging focus after light rays of different wavelengths pass through the lens. Fig. 2B shows an astigmatism curve of the optical imaging lens of embodiment 1, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 2C shows a distortion curve of the optical imaging lens of embodiment 1, which represents distortion magnitude values at different angles of view. Fig. 2D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 1, which represents the 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 provided in embodiment 1 can achieve good imaging quality.
Example 2
An optical imaging lens according to embodiment 2 of the present application is described below with reference to fig. 3 to 4D. In this embodiment and the following embodiments, descriptions of portions similar to embodiment 1 will be omitted for brevity. Fig. 3 shows a schematic configuration of an optical imaging lens according to embodiment 2 of the present application.
As shown in fig. 3, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 2, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 4 Table 4
Table 5 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 2, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 4.3534E-02 4.2277E-02 -2.2690E-01 6.7125E-01 -1.1159E+00 1.0085E+00 -3.7757E-01 -5.2710E-02 5.5807E-02
S2 -2.2000E-04 1.3229E-01 -4.0208E-01 1.3328E+00 -2.7988E+00 3.5092E+00 -2.3764E+00 6.9967E-01 -4.2700E-02
S3 1.1288E-02 2.0563E-01 -9.6058E-01 3.8897E+00 -1.0103E+01 1.6389E+01 -1.6149E+01 8.9294E+00 -2.1541E+00
S4 -2.3015E-01 6.4445E-01 -1.5805E+00 3.0774E+00 -4.8829E+00 5.5910E+00 -3.6694E+00 9.6267E-01 0.0000E+00
S5 -2.2370E-01 7.2399E-01 -1.4552E+00 2.0052E+00 -1.7753E+00 6.6389E-01 1.0966E+00 -1.8420E+00 7.8655E-01
S6 2.8435E-02 1.2358E-01 2.1104E-01 -2.2323E+00 7.4181E+00 -1.3869E+01 1.5915E+01 -1.0348E+01 2.8688E+00
S7 -1.1138E-01 1.7692E-01 -8.7802E-01 1.5693E+00 -3.8020E-02 -6.7081E+00 1.3906E+01 -1.1513E+01 3.4473E+00
S8 -1.0310E-01 -2.5883E-01 2.5084E+00 -1.3049E+01 3.8497E+01 -6.8482E+01 7.1774E+01 -4.0245E+01 9.2233E+00
S9 -1.6255E-01 8.3330E-03 3.1663E-01 -3.6673E+00 1.5008E+01 -3.1053E+01 3.4744E+01 -1.9822E+01 4.4816E+00
S10 -1.1131E-01 1.3004E-01 -5.2292E-01 7.1665E-02 2.3910E+00 -4.7103E+00 4.0956E+00 -1.7591E+00 3.0668E-01
S11 -4.6920E-02 5.5989E-01 -2.2326E+00 3.9962E+00 -3.5484E+00 1.2529E+00 3.1269E-01 -3.8991E-01 8.8487E-02
S12 -5.3115E-01 1.6881E+00 -4.3243E+00 7.5353E+00 -8.5451E+00 6.2246E+00 -2.7936E+00 6.9902E-01 -7.4340E-02
S13 -9.6740E-02 -1.6380E-02 -2.1876E-01 5.8922E-01 -7.2918E-01 5.0549E-01 -2.0560E-01 4.6658E-02 -4.5800E-03
S14 1.4519E-01 -4.1039E-01 4.6031E-01 -3.2310E-01 1.4810E-01 -4.4310E-02 8.3590E-03 -9.0000E-04 4.2100E-05
S15 -3.4510E-01 1.7643E-01 -1.3290E-02 -2.5440E-02 1.3892E-02 -3.5900E-03 5.2100E-04 -4.1000E-05 1.3400E-06
S16 -2.2402E-01 1.6222E-01 -7.9580E-02 2.5391E-02 -5.1500E-03 6.0900E-04 -3.1000E-05 -5.3000E-07 9.0600E-08
TABLE 5
Table 6 shows the effective focal lengths f1 to f8 of the respective lenses in embodiment 2, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 8.15 f(mm) 3.84
f2(mm) 4.79 TTL(mm) 4.66
f3(mm) -8.20 ImgH(mm) 2.93
f4(mm) 2042.32
f5(mm) 11.47
f6(mm) -14.28
f7(mm) 5.28
f8(mm) -3.42
TABLE 6
Fig. 4A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 2, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 4B shows an astigmatism curve of the optical imaging lens of embodiment 2, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 4C shows a distortion curve of the optical imaging lens of embodiment 2, which represents distortion magnitude values at different angles of view. Fig. 4D shows a magnification chromatic aberration 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 provided in embodiment 2 can achieve good imaging quality.
Example 3
An optical imaging lens according to embodiment 3 of the present application is described below with reference to fig. 5 to 6D. Fig. 5 shows a schematic configuration diagram of an optical imaging lens according to embodiment 3 of the present application.
As shown in fig. 5, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is convex. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 3, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 7
Table 8 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 3, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 4.1297E-02 5.2990E-02 -2.9216E-01 8.7069E-01 -1.5024E+00 1.5000E+00 -7.8340E-01 1.5028E-01 9.2560E-03
S2 3.4950E-03 1.4122E-01 -6.3099E-01 2.3022E+00 -5.1062E+00 6.9146E+00 -5.4426E+00 2.2573E+00 -3.8669E-01
S3 1.5037E-02 2.4388E-01 -1.4458E+00 6.0225E+00 -1.5475E+01 2.4640E+01 -2.3713E+01 1.2717E+01 -2.9456E+00
S4 -2.2826E-01 6.8205E-01 -1.9699E+00 4.6002E+00 -8.0114E+00 9.1618E+00 -5.8146E+00 1.4951E+00 0.0000E+00
S5 -2.1947E-01 7.0488E-01 -1.4723E+00 2.1422E+00 -1.5744E+00 -1.0267E+00 4.1438E+00 -4.1735E+00 1.4541E+00
S6 2.8114E-02 1.2854E-01 9.9380E-02 -1.6343E+00 5.8950E+00 -1.1769E+01 1.4229E+01 -9.5790E+00 2.7120E+00
S7 -1.1766E-01 3.0316E-01 -1.7333E+00 5.3310E+00 -1.0519E+01 1.2095E+01 -7.0188E+00 1.4153E+00 1.0839E-01
S8 -9.3060E-02 -2.4411E-01 2.3025E+00 -1.1730E+01 3.3826E+01 -5.8778E+01 6.0204E+01 -3.3037E+01 7.4321E+00
S9 -1.5886E-01 1.0815E-02 2.9882E-01 -3.4525E+00 1.4017E+01 -2.8755E+01 3.1915E+01 -1.8094E+01 4.0830E+00
S10 -1.1881E-01 1.5737E-01 -4.7580E-01 -4.7828E-01 3.9156E+00 -6.8673E+00 5.7987E+00 -2.4675E+00 4.2634E-01
S11 -5.2340E-02 6.4651E-01 -2.5722E+00 4.5986E+00 -4.0472E+00 1.3257E+00 4.8986E-01 -5.0804E-01 1.1098E-01
S12 -5.4259E-01 1.7828E+00 -4.6677E+00 8.2204E+00 -9.3549E+00 6.8050E+00 -3.0405E+00 7.5623E-01 -7.9890E-02
S13 -8.3680E-02 -6.2420E-02 -1.2095E-01 4.5680E-01 -6.1281E-01 4.4103E-01 -1.8412E-01 4.2734E-02 -4.2800E-03
S14 1.3876E-01 -3.8347E-01 4.1914E-01 -2.8637E-01 1.2767E-01 -3.7140E-02 6.8130E-03 -7.1000E-04 3.2500E-05
S15 -3.3966E-01 1.7358E-01 -1.5510E-02 -2.2280E-02 1.2265E-02 -3.1400E-03 4.4800E-04 -3.5000E-05 1.1200E-06
S16 -2.1433E-01 1.4573E-01 -6.3780E-02 1.5888E-02 -1.5000E-03 -2.8000E-04 1.0100E-04 -1.2000E-05 4.8200E-07
TABLE 8
Table 9 gives the effective focal lengths f1 to f8 of the respective lenses in embodiment 3, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 7.95 f(mm) 3.82
f2(mm) 4.96 TTL(mm) 4.67
f3(mm) -8.15 ImgH(mm) 2.93
f4(mm) 51.92
f5(mm) 14.51
f6(mm) -16.25
f7(mm) 5.37
f8(mm) -3.45
TABLE 9
Fig. 6A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 3, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 6B shows an astigmatism curve of the optical imaging lens of embodiment 3, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 6C shows a distortion curve of the optical imaging lens of embodiment 3, which represents distortion magnitude values at different angles of view. Fig. 6D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 3, which represents the 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 provided in embodiment 3 can achieve good imaging quality.
Example 4
An optical imaging lens according to embodiment 4 of the present application is described below with reference to fig. 7 to 8D. Fig. 7 shows a schematic configuration diagram of an optical imaging lens according to embodiment 4 of the present application.
As shown in fig. 7, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has negative refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 4, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 10
Table 11 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 4, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 2.7724E-02 1.0818E-01 -4.7639E-01 1.3869E+00 -2.4533E+00 2.6549E+00 -1.6765E+00 5.4708E-01 -6.8360E-02
S2 -4.0170E-02 3.3741E-01 -1.4994E+00 5.0622E+00 -1.0834E+01 1.4637E+01 -1.2075E+01 5.5685E+00 -1.1125E+00
S3 -1.1450E-02 3.1519E-01 -1.6058E+00 5.9578E+00 -1.4004E+01 2.0750E+01 -1.8867E+01 9.6619E+00 -2.1434E+00
S4 -2.0737E-01 5.3065E-01 -1.1589E+00 2.0096E+00 -2.7707E+00 2.6107E+00 -1.3082E+00 2.2274E-01 0.0000E+00
S5 -2.0161E-01 5.4451E-01 -6.9391E-01 6.1656E-02 1.7152E+00 -3.8417E+00 4.6689E+00 -3.1252E+00 8.5136E-01
S6 4.4025E-02 -1.2000E-04 6.4519E-01 -3.1330E+00 8.6059E+00 -1.4899E+01 1.6249E+01 -1.0002E+01 2.5912E+00
S7 -9.7160E-02 2.9038E-02 -1.6464E-01 -8.1182E-01 4.9623E+00 -1.2814E+01 1.7375E+01 -1.1607E+01 2.9716E+00
S8 -9.6940E-02 -3.0616E-01 2.5645E+00 -1.2957E+01 3.7908E+01 -6.7175E+01 7.0132E+01 -3.9109E+01 8.8876E+00
S9 -1.7932E-01 3.7019E-02 3.0717E-01 -3.8761E+00 1.5798E+01 -3.2519E+01 3.6344E+01 -2.0781E+01 4.7136E+00
S10 -1.1549E-01 6.3795E-02 -1.0341E-01 -1.4017E+00 5.3525E+00 -8.3864E+00 6.9306E+00 -3.0050E+00 5.4278E-01
S11 1.1785E-02 2.0083E-01 -1.0658E+00 1.4547E+00 1.0699E-01 -2.1213E+00 2.2304E+00 -1.0006E+00 1.7171E-01
S12 -4.8928E-01 1.4960E+00 -3.6878E+00 6.2310E+00 -6.8722E+00 4.8886E+00 -2.1516E+00 5.2966E-01 -5.5510E-02
S13 -1.3840E-01 1.2479E-01 -3.9158E-01 7.2070E-01 -8.1046E-01 5.5293E-01 -2.2631E-01 5.1479E-02 -4.9900E-03
S14 1.1369E-01 -3.0636E-01 3.3745E-01 -2.3638E-01 1.0713E-01 -3.1190E-02 5.6410E-03 -5.8000E-04 2.5300E-05
S15 -3.2640E-01 1.6337E-01 -1.5730E-02 -1.8270E-02 9.8580E-03 -2.4400E-03 3.3600E-04 -2.5000E-05 7.8500E-07
S16 -2.1435E-01 1.4374E-01 -6.4060E-02 1.6323E-02 -1.2800E-03 -4.9000E-04 1.5600E-04 -1.8000E-05 7.6600E-07
TABLE 11
Table 12 gives the effective focal lengths f1 to f8 of the respective lenses in embodiment 4, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) -500.04 f(mm) 3.76
f2(mm) 3.07 TTL(mm) 4.68
f3(mm) -8.22 ImgH(mm) 2.93
f4(mm) -573.64
f5(mm) 10.19
f6(mm) -9.78
f7(mm) 4.34
f8(mm) -3.46
Table 12
Fig. 8A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 4, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 8B shows an astigmatism curve of the optical imaging lens of embodiment 4, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 8C shows a distortion curve of the optical imaging lens of embodiment 4, which represents distortion magnitude values at different angles of view. Fig. 8D shows a magnification chromatic aberration 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 provided in embodiment 4 can achieve good imaging quality.
Example 5
An optical imaging lens according to embodiment 5 of the present application is described below with reference to fig. 9 to 10D. Fig. 9 shows a schematic configuration of an optical imaging lens according to embodiment 5 of the present application.
As shown in fig. 9, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has negative refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 5, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
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TABLE 13
Table 14 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 5, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 5.1052E-02 9.8360E-03 -1.4115E-01 5.8677E-01 -1.4400E+00 2.1114E+00 -1.8280E+00 8.7407E-01 -1.8016E-01
S2 3.3773E-02 1.1213E-01 -4.4248E-01 8.9239E-01 -1.4626E+00 2.5628E+00 -3.3520E+00 2.4490E+00 -7.3906E-01
S3 3.5967E-02 3.0498E-01 -1.3091E+00 3.4194E+00 -7.2239E+00 1.2496E+01 -1.4825E+01 1.0034E+01 -2.8729E+00
S4 -2.5524E-01 1.0335E+00 -3.2216E+00 6.0715E+00 -6.5275E+00 3.1596E+00 2.5029E-01 -5.9031E-01 0.0000E+00
S5 -1.8303E-01 6.3890E-01 -1.5449E+00 1.5802E+00 3.0395E+00 -1.2559E+01 1.8001E+01 -1.2272E+01 3.2928E+00
S6 7.2787E-02 -7.1770E-02 6.9181E-01 -3.6649E+00 1.1745E+01 -2.2512E+01 2.5358E+01 -1.5190E+01 3.6812E+00
S7 -9.4520E-02 2.2701E-01 -2.1164E+00 9.0613E+00 -2.5622E+01 4.6321E+01 -5.2422E+01 3.4422E+01 -9.9852E+00
S8 -1.0558E-01 -1.1882E-01 1.2338E+00 -7.4482E+00 2.3760E+01 -4.4327E+01 4.7564E+01 -2.6700E+01 5.9978E+00
S9 -1.7506E-01 -2.1940E-02 6.4012E-01 -4.8478E+00 1.7449E+01 -3.4286E+01 3.7638E+01 -2.1486E+01 4.9364E+00
S10 -1.0530E-01 -4.9010E-02 3.2375E-01 -2.0705E+00 5.8847E+00 -8.7674E+00 7.3635E+00 -3.3288E+00 6.3206E-01
S11 1.2747E-02 9.7299E-02 -6.8703E-01 1.1716E+00 -5.5192E-01 -5.8566E-01 9.0330E-01 -4.5259E-01 8.1757E-02
S12 -4.9254E-01 1.4196E+00 -3.2782E+00 5.2931E+00 -5.6156E+00 3.8295E+00 -1.6060E+00 3.7452E-01 -3.6990E-02
S13 -1.5029E-01 1.6411E-01 -4.6601E-01 8.0789E-01 -8.6366E-01 5.6376E-01 -2.2162E-01 4.8367E-02 -4.4700E-03
S14 1.2704E-01 -3.4806E-01 3.8531E-01 -2.6691E-01 1.1946E-01 -3.4570E-02 6.2760E-03 -6.5000E-04 2.9500E-05
S15 -3.0804E-01 1.4843E-01 -1.0150E-02 -1.9470E-02 1.0046E-02 -2.4700E-03 3.4300E-04 -2.6000E-05 8.1900E-07
S16 -2.1240E-01 1.4404E-01 -6.5430E-02 1.7503E-02 -1.9000E-03 -2.8000E-04 1.1300E-04 -1.3000E-05 5.4300E-07
TABLE 14
Table 15 shows the effective focal lengths f1 to f8 of the respective lenses in embodiment 5, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 3.26 f(mm) 3.82
f2(mm) -1077.03 TTL(mm) 4.67
f3(mm) -8.26 ImgH(mm) 2.93
f4(mm) -28.02
f5(mm) 7.93
f6(mm) -11.06
f7(mm) 4.57
f8(mm) -3.44
TABLE 15
Fig. 10A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 5, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 10B shows an astigmatism curve of the optical imaging lens of embodiment 5, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 10C shows a distortion curve of the optical imaging lens of embodiment 5, which represents distortion magnitude values at different angles of view. Fig. 10D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 5, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 10A to 10D, the optical imaging lens provided in embodiment 5 can achieve good imaging quality.
Example 6
An optical imaging lens according to embodiment 6 of the present application is described below with reference to fig. 11 to 12D. Fig. 11 shows a schematic structural diagram of an optical imaging lens according to embodiment 6 of the present application.
As shown in fig. 11, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 6, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 16
Table 17 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 6, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
TABLE 17
Table 18 gives the effective focal lengths f1 to f8 of the respective lenses in embodiment 6, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 6.95 f(mm) 3.77
f2(mm) 11.44 TTL(mm) 4.63
f3(mm) 501.52 ImgH(mm) 2.93
f4(mm) -96.36
f5(mm) 6.92
f6(mm) -7.26
f7(mm) 4.79
f8(mm) -3.33
TABLE 18
Fig. 12A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 6, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 12B shows an astigmatism curve of the optical imaging lens of embodiment 6, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 12C shows a distortion curve of the optical imaging lens of embodiment 6, which represents distortion magnitude values at different angles of view. Fig. 12D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 6, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 12A to 12D, the optical imaging lens provided in embodiment 6 can achieve good imaging quality.
Example 7
An optical imaging lens according to embodiment 7 of the present application is described below with reference to fig. 13 to 14D. Fig. 13 shows a schematic configuration diagram of an optical imaging lens according to embodiment 7 of the present application.
As shown in fig. 13, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 7, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
TABLE 19
Table 20 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 7, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 4.5118E-02 2.3362E-02 -1.1335E-01 2.9744E-01 -3.6218E-01 5.5780E-02 3.6469E-01 -3.8127E-01 1.1945E-01
S2 7.7700E-04 1.2126E-01 -3.4222E-01 1.0813E+00 -2.2040E+00 2.7423E+00 -1.8478E+00 5.2772E-01 -2.6010E-02
S3 1.4957E-02 1.7922E-01 -8.3498E-01 3.4306E+00 -9.0899E+00 1.5116E+01 -1.5287E+01 8.6675E+00 -2.1382E+00
S4 -2.2675E-01 6.1216E-01 -1.4475E+00 2.7197E+00 -4.1875E+00 4.6918E+00 -3.0077E+00 7.5824E-01 0.0000E+00
S5 -2.2088E-01 6.5793E-01 -1.0472E+00 5.6517E-01 1.5541E+00 -4.3868E+00 5.8392E+00 -4.3085E+00 1.3256E+00
S6 2.9141E-02 1.3291E-01 1.1009E-01 -1.6047E+00 5.3617E+00 -9.9723E+00 1.1527E+01 -7.6085E+00 2.1406E+00
S7 -1.0993E-01 1.9496E-01 -1.1244E+00 3.1423E+00 -5.5099E+00 4.6115E+00 1.5892E-01 -2.5571E+00 1.0482E+00
S8 -9.8100E-02 -2.5788E-01 2.4212E+00 -1.2400E+01 3.6165E+01 -6.3712E+01 6.6229E+01 -3.6890E+01 8.4157E+00
S9 -1.6230E-01 8.7800E-03 3.3008E-01 -3.7683E+00 1.5344E+01 -3.1697E+01 3.5484E+01 -2.0299E+01 4.6174E+00
S10 -1.2679E-01 2.6043E-01 -1.1811E+00 1.9810E+00 -9.1186E-01 -1.2739E+00 2.0152E+00 -1.0929E+00 2.2057E-01
S11 -4.9690E-02 6.4686E-01 -2.7476E+00 5.4909E+00 -6.0709E+00 3.8321E+00 -1.2595E+00 1.3647E-01 1.3757E-02
S12 -5.3781E-01 1.7616E+00 -4.6008E+00 8.0905E+00 -9.2180E+00 6.7287E+00 -3.0215E+00 7.5587E-01 -8.0350E-02
S13 -1.0696E-01 2.2639E-02 -3.2673E-01 7.7675E-01 -9.3713E-01 6.5270E-01 -2.7009E-01 6.2541E-02 -6.2500E-03
S14 1.4480E-01 -4.0781E-01 4.5626E-01 -3.1955E-01 1.4625E-01 -4.3740E-02 8.2570E-03 -8.9000E-04 4.1800E-05
S15 -3.4488E-01 1.7636E-01 -1.3550E-02 -2.5230E-02 1.3831E-02 -3.5900E-03 5.2200E-04 -4.1000E-05 1.3600E-06
S16 -2.2168E-01 1.5606E-01 -7.2870E-02 2.1225E-02 -3.5300E-03 2.0700E-04 2.9500E-05 -5.7000E-06 2.8000E-07
Table 20
Table 21 shows the effective focal lengths f1 to f8 of the respective lenses in embodiment 7, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
Table 21
Fig. 14A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 7, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 14B shows an astigmatism curve of the optical imaging lens of embodiment 7, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 14C shows a distortion curve of the optical imaging lens of embodiment 7, which represents distortion magnitude values in the case of different angles of view. Fig. 14D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 7, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 14A to 14D, the optical imaging lens provided in embodiment 7 can achieve good imaging quality.
Example 8
An optical imaging lens according to embodiment 8 of the present application is described below with reference to fig. 15 to 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, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is concave and an image-side surface S8 thereof is convex. The fifth lens element E5 has negative refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
Table 15 shows the surface types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 8, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 22
Table 23 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 8, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Table 23
Table 24 gives the effective focal lengths f1 to f8 of the respective lenses in embodiment 8, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 9.19 f(mm) 3.82
f2(mm) 4.40 TTL(mm) 4.64
f3(mm) -7.79 ImgH(mm) 2.93
f4(mm) 12.94
f5(mm) -499.99
f6(mm) -13.44
f7(mm) 4.84
f8(mm) -3.46
Table 24
Fig. 16A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 8, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 16B shows an astigmatism curve of the optical imaging lens of embodiment 8, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 16C shows a distortion curve of the optical imaging lens of embodiment 8, which represents distortion magnitude values in the case of different angles of view. Fig. 16D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 8, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 16A to 16D, the optical imaging lens provided in embodiment 8 can achieve good imaging quality.
Example 9
An optical imaging lens according to embodiment 9 of the present application is described below with reference to fig. 17 to 18D. Fig. 17 shows a schematic configuration diagram of an optical imaging lens according to embodiment 9 of the present application.
As shown in fig. 17, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 9, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 25
Table 26 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 9, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 4.7739E-02 -2.1950E-02 1.9785E-01 -9.4627E-01 2.6600E+00 -4.4573E+00 4.4008E+00 -2.3632E+00 5.3015E-01
S2 3.8100E-03 9.7332E-02 -1.8387E-01 3.3514E-01 1.3617E-01 -1.8095E+00 3.3704E+00 -2.6784E+00 7.8338E-01
S3 2.0672E-02 9.5111E-02 -1.8243E-01 3.2726E-01 -5.0630E-02 -1.0510E+00 1.9682E+00 -1.3737E+00 3.0407E-01
S4 -2.3320E-01 6.5832E-01 -1.6073E+00 3.2369E+00 -5.5463E+00 6.8430E+00 -4.7519E+00 1.3148E+00 0.0000E+00
S5 -2.3309E-01 7.4468E-01 -1.4345E+00 2.0647E+00 -2.6876E+00 3.0212E+00 -1.4925E+00 -6.2980E-01 6.2999E-01
S6 2.8969E-02 1.4946E-01 -5.6400E-03 -1.1701E+00 4.2480E+00 -8.4715E+00 1.0823E+01 -7.9253E+00 2.4444E+00
S7 -9.8320E-02 3.5722E-02 3.3657E-02 -1.9000E+00 7.8111E+00 -1.7145E+01 2.1134E+01 -1.3130E+01 3.1093E+00
S8 -1.0377E-01 -2.2581E-01 2.2360E+00 -1.1851E+01 3.5212E+01 -6.2990E+01 6.6282E+01 -3.7210E+01 8.5136E+00
S9 -1.6177E-01 -9.6000E-03 4.4933E-01 -4.0740E+00 1.5754E+01 -3.1920E+01 3.5467E+01 -2.0298E+01 4.6498E+00
S10 -1.2393E-01 1.4167E-01 -3.9015E-01 -6.2852E-01 3.9613E+00 -6.7096E+00 5.6404E+00 -2.4450E+00 4.4140E-01
S11 -6.0740E-02 5.1046E-01 -1.4423E+00 8.5312E-01 2.6174E+00 -5.5938E+00 4.7181E+00 -1.9309E+00 3.1685E-01
S12 -5.3654E-01 1.7264E+00 -4.1783E+00 6.6200E+00 -6.7325E+00 4.3962E+00 -1.7778E+00 4.0253E-01 -3.8720E-02
S13 -5.8420E-02 -6.8110E-02 -1.5905E-01 4.6721E-01 -5.4200E-01 3.4850E-01 -1.3339E-01 2.9150E-02 -2.8000E-03
S14 1.2735E-01 -3.4123E-01 3.3930E-01 -2.0505E-01 7.9269E-02 -1.9840E-02 3.1650E-03 -3.0000E-04 1.2600E-05
S15 -3.1909E-01 1.4840E-01 1.6330E-03 -3.0210E-02 1.4821E-02 -3.6900E-03 5.2600E-04 -4.1000E-05 1.3400E-06
S16 -2.1171E-01 1.3448E-01 -4.6350E-02 2.5530E-03 4.3720E-03 -1.8300E-03 3.4100E-04 -3.2000E-05 1.2000E-06
Table 26
Table 27 shows the effective focal lengths f1 to f8 of the respective lenses in embodiment 9, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 9.42 f(mm) 3.86
f2(mm) 4.37 TTL(mm) 4.66
f3(mm) -7.46 ImgH(mm) 2.93
f4(mm) -433.24
f5(mm) 12.32
f6(mm) 509.60
f7(mm) 7.26
f8(mm) -3.41
Table 27
Fig. 18A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 9, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 18B shows an astigmatism curve of the optical imaging lens of embodiment 9, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 18C shows a distortion curve of the optical imaging lens of embodiment 9, which represents distortion magnitude values in the case of different angles of view. Fig. 18D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 9, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 18A to 18D, the optical imaging lens provided in embodiment 9 can achieve good imaging quality.
Example 10
An optical imaging lens according to embodiment 10 of the present application is described below with reference to fig. 19 to 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, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has positive refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has negative refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the optical imaging lens of example 10, wherein the radii of curvature and thicknesses are each in millimeters (mm).
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Table 28
Table 29 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 10, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 4.0678E-02 5.5241E-02 -2.7549E-01 8.5937E-01 -1.7399E+00 2.2634E+00 -1.7740E+00 7.4451E-01 -1.2674E-01
S2 3.5480E-03 8.7812E-02 9.9795E-02 -1.2599E+00 4.0337E+00 -6.6530E+00 6.3567E+00 -3.3516E+00 7.3935E-01
S3 9.9810E-03 2.8415E-01 -1.2608E+00 4.1794E+00 -9.5869E+00 1.4753E+01 -1.4332E+01 7.9662E+00 -1.9545E+00
S4 -2.1838E-01 6.2450E-01 -1.5249E+00 2.4338E+00 -2.6986E+00 2.2702E+00 -1.2290E+00 2.4916E-01 0.0000E+00
S5 -2.2046E-01 7.6977E-01 -1.7990E+00 2.3659E+00 2.4505E-01 -6.7340E+00 1.1930E+01 -9.5525E+00 2.9754E+00
S6 3.9617E-02 -4.2440E-02 1.6676E+00 -9.7401E+00 3.0521E+01 -5.6781E+01 6.3008E+01 -3.8324E+01 9.7598E+00
S7 -1.2780E-01 5.1086E-01 -4.0565E+00 1.8239E+01 -5.2277E+01 9.3755E+01 -1.0231E+02 6.2629E+01 -1.6556E+01
S8 -1.1192E-01 -2.5494E-01 2.5382E+00 -1.3367E+01 3.9885E+01 -7.1779E+01 7.6093E+01 -4.3156E+01 1.0012E+01
S9 -1.5415E-01 9.9780E-03 3.2978E-01 -3.6801E+00 1.4870E+01 -3.0565E+01 3.4014E+01 -1.9274E+01 4.3104E+00
S10 -6.2690E-02 -2.8179E-01 1.2578E+00 -4.6397E+00 1.0106E+01 -1.2445E+01 8.6336E+00 -3.1539E+00 4.7285E-01
S11 -1.9500E-03 4.9969E-02 -5.5660E-02 -1.2197E+00 3.9891E+00 -5.3841E+00 3.7677E+00 -1.3584E+00 2.0008E-01
S12 -5.6255E-01 1.8083E+00 -4.3496E+00 7.1018E+00 -7.6421E+00 5.3603E+00 -2.3470E+00 5.7858E-01 -6.1030E-02
S13 1.2694E-01 -6.8221E-01 1.1126E+00 -1.3336E+00 1.1997E+00 -7.9161E-01 3.4217E-01 -8.2570E-02 8.2910E-03
S14 1.4499E-01 -4.2896E-01 4.9070E-01 -3.5090E-01 1.6395E-01 -4.9990E-02 9.5920E-03 -1.0500E-03 4.9500E-05
S15 -2.9364E-01 1.2948E-01 5.5930E-03 -2.8720E-02 1.3618E-02 -3.3400E-03 4.6900E-04 -3.6000E-05 1.1600E-06
S16 -2.1813E-01 1.5839E-01 -8.4880E-02 3.2810E-02 -9.1300E-03 1.7730E-03 -2.3000E-04 1.7100E-05 -5.7000E-07
Table 29
Table 30 gives the effective focal lengths f1 to f8 of the respective lenses in embodiment 10, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 11.06 f(mm) 3.75
f2(mm) 4.11 TTL(mm) 4.59
f3(mm) -8.10 ImgH(mm) 2.93
f4(mm) -172.99
f5(m) 8.54
f6(mm) 7.89
f7(mm) -750.73
f8(mm) -3.14
Table 30
Fig. 20A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 10, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 20B shows an astigmatism curve of the optical imaging lens of embodiment 10, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 20C shows a distortion curve of the optical imaging lens of embodiment 10, which represents distortion magnitude values in the case of different angles of view. Fig. 20D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 10, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 20A to 20D, the optical imaging lens provided in embodiment 10 can achieve good imaging quality.
Example 11
An optical imaging lens according to embodiment 11 of the present application is described below with reference to fig. 21 to 22D. Fig. 21 shows a schematic configuration diagram of 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 sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is concave, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 11, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 31
Table 32 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 11, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 4.3196E-02 5.5280E-03 8.3946E-02 -7.3144E-01 2.5509E+00 -4.7381E+00 4.9426E+00 -2.7320E+00 6.2012E-01
S2 9.2860E-03 3.5971E-02 1.2516E-01 -7.0225E-01 2.6252E+00 -5.8954E+00 7.6220E+00 -5.1493E+00 1.3841E+00
S3 1.6565E-02 1.3623E-01 -6.7378E-01 2.9309E+00 -7.5893E+00 1.1836E+01 -1.1027E+01 5.7857E+00 -1.3574E+00
S4 -1.8875E-01 4.5096E-01 -1.1621E+00 2.6776E+00 -5.3808E+00 7.4334E+00 -5.4980E+00 1.5829E+00 0.0000E+00
S5 -2.2382E-01 8.5192E-01 -2.1750E+00 4.5534E+00 -8.2149E+00 1.1279E+01 -9.2201E+00 3.4055E+00 -2.6896E-01
S6 -1.8490E-02 3.5618E-01 -6.4067E-01 7.0733E-01 -1.1119E+00 2.4266E+00 -2.5322E+00 8.2792E-01 8.2475E-02
S7 -1.3780E-01 4.0996E-01 -2.3597E+00 7.5312E+00 -1.4781E+01 1.5340E+01 -5.4280E+00 -2.4672E+00 1.7501E+00
S8 -1.0110E-01 -2.4523E-01 2.4395E+00 -1.2663E+01 3.7214E+01 -6.6106E+01 6.9288E+01 -3.8901E+01 8.9450E+00
S9 -1.6299E-01 2.3800E-04 3.2267E-01 -3.5907E+00 1.4571E+01 -2.9879E+01 3.3120E+01 -1.8730E+01 4.2004E+00
S10 -9.0850E-02 -1.3928E-01 8.4498E-01 -3.7744E+00 8.9219E+00 -1.1525E+01 8.3671E+00 -3.2375E+00 5.2442E-01
S11 -8.3800E-03 1.0027E-01 1.5377E-01 -2.6161E+00 7.2763E+00 -9.5618E+00 6.8049E+00 -2.5480E+00 3.9498E-01
S12 -5.3721E-01 1.6421E+00 -3.9959E+00 6.5701E+00 -7.0752E+00 4.9539E+00 -2.1582E+00 5.2623E-01 -5.4440E-02
S13 -1.2089E-01 1.3070E-01 -6.4799E-01 1.2884E+00 -1.4308E+00 9.4518E-01 -3.7202E-01 8.1269E-02 -7.6000E-03
S14 1.4082E-01 -3.8790E-01 4.2341E-01 -2.8798E-01 1.2750E-01 -3.6780E-02 6.6880E-03 -7.0000E-04 3.1300E-05
S15 -3.5037E-01 1.7934E-01 -1.1920E-02 -2.7890E-02 1.5228E-02 -3.9800E-03 5.8500E-04 -4.6000E-05 1.5500E-06
S16 -2.1550E-01 1.4815E-01 -6.6080E-02 1.7406E-02 -2.1900E-03 -7.3000E-05 6.4000E-05 -8.0000E-06 3.4800E-07
Table 32
Table 33 gives the effective focal lengths f1 to f8 of the respective lenses in embodiment 11, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 7.07 f(mm) 3.87
f2(mm) 4.57 TTL(mm) 4.68
f3(mm) -6.25 ImgH(mm) 2.93
f4(mm) 336.03
f5(mm) 13.40
f6(mm) -19.35
f7(mm) 5.57
f8(mm) -3.38
Table 33
Fig. 22A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 11, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 22B shows an astigmatism curve of the optical imaging lens of embodiment 11, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 22C shows a distortion curve of the optical imaging lens of embodiment 11, which represents distortion magnitude values in the case of different angles of view. Fig. 22D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 11, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 22A to 22D, the optical imaging lens provided in embodiment 11 can achieve good imaging quality.
Example 12
An optical imaging lens according to embodiment 12 of the present application is described below with reference to fig. 23 to 24D. Fig. 23 shows a schematic configuration diagram of an optical imaging lens according to embodiment 12 of the present application.
As shown in fig. 23, the optical imaging lens according to the exemplary embodiment of the present application sequentially includes, from an object side to an image side along an optical axis: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is concave, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is convex, and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 12, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
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Watch 34
Table 35 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 12, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 3.9117E-02 3.3057E-02 -1.7707E-01 5.4419E-01 -9.7140E-01 1.0178E+00 -5.6720E-01 1.2385E-01 2.5930E-03
S2 -1.9520E-02 1.8931E-01 -5.8731E-01 1.8641E+00 -4.0068E+00 5.5059E+00 -4.5061E+00 1.9754E+00 -3.6353E-01
S3 -2.7000E-03 2.4925E-01 -1.0673E+00 4.0999E+00 -1.0431E+01 1.6817E+01 -1.6539E+01 9.1106E+00 -2.1773E+00
S4 -2.3519E-01 6.7766E-01 -1.7265E+00 3.4413E+00 -5.2967E+00 5.6856E+00 -3.5019E+00 8.7092E-01 0.0000E+00
S5 -2.0818E-01 6.3630E-01 -1.1572E+00 1.1196E+00 3.7283E-01 -2.9006E+00 4.6128E+00 -3.6526E+00 1.1555E+00
S6 3.9391E-02 9.2684E-02 1.4547E-01 -1.5593E+00 5.2605E+00 -1.0004E+01 1.1699E+01 -7.7100E+00 2.1456E+00
S7 -9.6210E-02 1.2780E-01 -7.4156E-01 1.4903E+00 -1.1350E+00 -2.6303E+00 7.2033E+00 -6.0157E+00 1.6361E+00
S8 -1.0012E-01 -2.6487E-01 2.4770E+00 -1.2983E+01 3.8559E+01 -6.8968E+01 7.2562E+01 -4.0762E+01 9.3375E+00
S9 -1.7178E-01 1.6330E-03 3.5525E-01 -3.7545E+00 1.5070E+01 -3.0854E+01 3.4284E+01 -1.9476E+01 4.3929E+00
S10 -1.1664E-01 1.3568E-01 -6.2384E-01 6.1130E-01 1.0263E+00 -2.8130E+00 2.6144E+00 -1.1526E+00 2.0570E-01
S11 -2.6510E-02 4.0774E-01 -1.6095E+00 2.5300E+00 -1.5777E+00 -2.4963E-01 9.2453E-01 -4.9648E-01 9.0130E-02
S12 -5.3960E-01 1.7259E+00 -4.2910E+00 7.1822E+00 -7.8664E+00 5.5872E+00 -2.4650E+00 6.0952E-01 -6.4240E-02
S13 -1.2278E-01 1.0199E-01 -4.7096E-01 9.3055E-01 -1.0436E+00 7.0267E-01 -2.8552E-01 6.5256E-02 -6.4400E-03
S14 1.3774E-01 -3.7618E-01 4.1252E-01 -2.8351E-01 1.2704E-01 -3.7060E-02 6.7970E-03 -7.1000E-04 3.2200E-05
S15 -3.4230E-01 1.7563E-01 -1.5920E-02 -2.2500E-02 1.2432E-02 -3.1800E-03 4.5600E-04 -3.5000E-05 1.1400E-06
S16 -2.2136E-01 1.4740E-01 -6.1010E-02 1.2297E-02 5.2600E-04 -9.2000E-04 2.1800E-04 -2.3000E-05 9.4700E-07
Table 35
Table 36 gives the effective focal lengths f1 to f8 of the respective lenses in embodiment 12, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 8.13 f(mm) 3.85
f2(mm) 4.88 TTL(mm) 4.66
f3(mm) -7.95 ImgH(mm) 2.93
f4(mm) -460.26
f5(mm) 10.99
f6(mm) -15.80
f7(mm) 5.24
f8(mm) -3.37
Table 36
Fig. 24A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 12, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 24B shows an astigmatism curve of the optical imaging lens of embodiment 12, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 24C shows a distortion curve of the optical imaging lens of embodiment 12, which represents distortion magnitude values in the case of different angles of view. Fig. 24D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 12, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 24A to 24D, the optical imaging lens provided in embodiment 12 can achieve good imaging quality.
Example 13
An optical imaging lens according to embodiment 13 of the present application is described below with reference to fig. 25 to 26D. Fig. 25 shows a schematic structural diagram of an optical imaging lens according to embodiment 13 of the present application.
As shown in fig. 25, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has negative refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has negative refractive power, wherein an object-side surface S7 thereof is convex and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. 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 types, the radii of curvature, the thicknesses, the materials, and the cone coefficients of the respective lenses of the optical imaging lens of example 13, in which the units of the radii of curvature and the thicknesses are millimeters (mm).
Table 37
Table 38 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 13, where each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Table 38
Table 39 shows the effective focal lengths f1 to f8 of the respective lenses in embodiment 13, the total effective focal length f of the optical imaging lens, the total optical length TTL of the optical imaging lens, and the half-diagonal length ImgH of the effective pixel region on the imaging surface S19 of the optical imaging lens.
f1(mm) 8.72 f(mm) 3.85
f2(mm) 4.66 TTL(mm) 4.67
f3(mm) -7.94 ImgH(mm) 2.93
f4(mm) -914.37
f5(mm) 10.55
f6(mm) -14.17
f7(m) 5.28
f8(mm) -3.42
Table 39
Fig. 26A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 13, which indicates a convergent focus deviation of light rays of different wavelengths after passing through the lens. Fig. 26B shows an astigmatism curve of the optical imaging lens of embodiment 13, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 26C shows a distortion curve of the optical imaging lens of embodiment 13, which represents distortion magnitude values in the case of different angles of view. Fig. 26D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 13, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 26A to 26D, the optical imaging lens provided in embodiment 13 can achieve good imaging quality.
Example 14
An optical imaging lens according to embodiment 14 of the present application is described below with reference to fig. 27 to 28D. Fig. 27 shows a schematic structural diagram of an optical imaging lens according to embodiment 14 of the present application.
As shown in fig. 27, an optical imaging lens according to an exemplary embodiment of the present application sequentially includes, along an optical axis from an object side to an image side: stop STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5, sixth lens E6, seventh lens E7, eighth lens E8, filter E9, and imaging plane S19.
The first lens element E1 has positive refractive power, wherein an object-side surface S1 thereof is convex, and an image-side surface S2 thereof is concave. The second lens element E2 has positive refractive power, wherein an object-side surface S3 thereof is convex, and an image-side surface S4 thereof is concave. The third lens element E3 has positive refractive power, wherein an object-side surface S5 thereof is convex, and an image-side surface S6 thereof is concave. The fourth lens element E4 has positive refractive power, wherein an object-side surface S7 thereof is convex, and an image-side surface S8 thereof is concave. The fifth lens element E5 has positive refractive power, wherein an object-side surface S9 thereof is concave and an image-side surface S10 thereof is convex. The sixth lens element E6 has negative refractive power, wherein an object-side surface S11 thereof is concave and an image-side surface S12 thereof is convex. The seventh lens element E7 has positive refractive power, wherein an object-side surface S13 thereof is convex, and an image-side surface S14 thereof is concave. The eighth lens element E8 has negative refractive power, wherein an object-side surface S15 thereof is convex and an image-side surface S16 thereof is concave. The filter E9 has an object side surface S17 and an image side surface S18. Light from the object sequentially passes through the respective surfaces S1 to S18 and is finally imaged on the imaging surface S19.
Table 40 shows the surface types, radii of curvature, thicknesses, materials, and cone coefficients of the respective lenses of the optical imaging lens of example 14, wherein the radii of curvature and thicknesses are each in millimeters (mm).
Table 40
Table 41 shows the higher order coefficients that can be used for each of the aspherical mirror surfaces in example 14, wherein each of the aspherical surface types can be defined by the formula (1) given in example 1 above.
Face number A4 A6 A8 A10 A12 A14 A16 A18 A20
S1 3.9391E-02 5.0770E-02 -2.9663E-01 1.0310E+00 -2.2353E+00 3.0705E+00 -2.5768E+00 1.2034E+00 -2.4079E-01
S2 -5.3730E-02 3.3578E-01 -6.3095E-01 6.5872E-01 3.2498E-01 -1.8705E+00 2.2633E+00 -1.1798E+00 2.0746E-01
S3 -5.4600E-02 4.6634E-01 -1.3508E+00 3.7633E+00 -8.4362E+00 1.3469E+01 -1.3951E+01 8.3154E+00 -2.1611E+00
S4 -2.1991E-01 3.3746E-01 -1.8786E-01 -4.3675E-01 7.9901E-01 -4.1174E-01 8.7438E-02 -6.7440E-02 0.0000E+00
S5 -2.2760E-02 -9.1843E-01 5.5364E+00 -1.7552E+01 3.5615E+01 -4.7747E+01 4.1380E+01 -2.1012E+01 4.7006E+00
S6 4.5053E-02 -1.1456E-01 1.1824E+00 -4.2583E+00 9.4151E+00 -1.3736E+01 1.3151E+01 -7.3460E+00 1.7724E+00
S7 -9.2200E-02 2.9133E-01 -1.7840E+00 5.9061E+00 -1.2563E+01 1.5926E+01 -1.1538E+01 4.4564E+00 -7.2208E-01
S8 -9.6240E-02 -2.3488E-01 2.2843E+00 -1.1960E+01 3.5543E+01 -6.3285E+01 6.5903E+01 -3.6594E+01 8.3147E+00
S9 -1.6825E-01 4.6960E-03 3.8754E-01 -4.0708E+00 1.6241E+01 -3.3388E+01 3.7530E+01 -2.1706E+01 5.0243E+00
S10 -1.2119E-01 1.0685E-01 -9.0190E-02 -1.8843E+00 6.7386E+00 -1.0378E+01 8.5720E+00 -3.7523E+00 6.8938E-01
S11 -1.1420E-02 2.6467E-01 -1.1500E+00 1.4064E+00 5.0216E-01 -2.8405E+00 2.8762E+00 -1.2947E+00 2.2576E-01
S12 -4.2923E-01 1.1644E+00 -2.7279E+00 4.5567E+00 -5.0260E+00 3.5797E+00 -1.5726E+00 3.8487E-01 -3.9970E-02
S13 -9.0630E-02 -1.0225E-01 7.9972E-02 5.1983E-02 -1.6186E-01 1.3876E-01 -6.1320E-02 1.4772E-02 -1.5400E-03
S14 1.4160E-01 -4.0810E-01 4.6948E-01 -3.4074E-01 1.6155E-01 -4.9880E-02 9.6810E-03 -1.0700E-03 5.1400E-05
S15 -3.9683E-01 2.2994E-01 -3.8750E-02 -1.9460E-02 1.3724E-02 -3.8700E-03 5.9500E-04 -4.9000E-05 1.6800E-06
S16 -2.3393E-01 1.7127E-01 -7.9600E-02 2.1607E-02 -2.5600E-03 -2.5000E-04 1.2400E-04 -1.5000E-05 6.7200E-07
Table 41
Table 42 shows effective focal lengths f1 to f8 of the respective lenses in embodiment 14, a total effective focal length f of the optical imaging lens, an optical total length TTL of the optical imaging lens, and a half-diagonal length ImgH of an effective pixel region on the imaging surface S19 of the optical imaging lens.
Table 42
Fig. 28A shows an on-axis chromatic aberration curve of the optical imaging lens of embodiment 14, which indicates the deviation of the converging focus after light rays of different wavelengths pass through the lens. Fig. 28B shows an astigmatism curve of the optical imaging lens of embodiment 14, which represents meridional image plane curvature and sagittal image plane curvature. Fig. 28C shows a distortion curve of the optical imaging lens of embodiment 14, which represents distortion magnitude values in the case of different angles of view. Fig. 28D shows a magnification chromatic aberration curve of the optical imaging lens of embodiment 14, which represents the deviation of different image heights on the imaging plane after light passes through the lens. As can be seen from fig. 28A to 28D, the optical imaging lens provided in embodiment 14 can achieve good imaging quality.
In summary, examples 1 to 14 satisfy the relationships shown in tables 43 and 44, respectively.
Condition/example 1 2 3 4 5 6 7
|f8/CT8| 10.03 10.84 11.29 12.10 11.65 10.55 11.19
f/EPD 1.75 1.92 1.87 1.85 1.93 1.89 1.95
TTL/ImgH 1.59 1.59 1.59 1.60 1.59 1.58 1.59
f/R1 2.14 2.24 2.20 2.20 2.26 2.20 2.25
SAG82/CT8 -1.87 -2.03 -2.16 -2.39 -2.06 -1.66 -2.03
(R15+R16)/(R15-R16) 1.46 1.44 1.44 1.41 1.45 1.44 1.45
f8/R16 -2.33 -2.31 -2.31 -2.27 -2.32 -2.31 -2.32
|f/f1|+|f/f2| 1.19 1.27 1.25 1.23 1.17 0.87 1.29
|f/f8| 1.05 1.12 1.11 1.09 1.11 1.13 1.13
CT3/CT4 1.00 0.84 0.77 1.00 0.98 0.92 0.80
T45/T67 1.03 0.98 1.14 1.30 1.34 1.00 1.25
f/R16 2.45 2.59 2.56 2.47 2.57 2.61 2.62
CT4/T45 3.88 4.77 4.54 3.08 3.07 3.87 3.93
Table 43
Table 44
The application also provides an imaging device, wherein the electronic photosensitive element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS). The imaging device may be a stand alone imaging device such as a digital camera or an imaging module integrated on a mobile electronic device such as a cell phone. The imaging device is equipped with the optical imaging lens described above.
The above description is only illustrative of the preferred embodiments of the present application and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the application referred to in the present application is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept. Such as the above-mentioned features and the technical features disclosed in the present application (but not limited to) having similar functions are replaced with each other.

Claims (17)

1. The optical imaging lens sequentially comprises 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 with focal power from an object side to an image side along an optical axis, and is characterized in that:
The second lens has positive focal power, and the image side surface of the second lens is a concave surface;
the fifth lens has positive focal power, and the image side surface of the fifth lens is a convex surface;
the object side surface of the sixth lens is a concave surface and the image side surface is a convex surface;
the object side surface of the seventh lens is a convex surface and the image side surface is a concave surface;
the optical power of the eighth lens is negative optical power,
wherein the number of lenses of the optical imaging lens with optical power is eight,
at least one of the first lens and the second lens has positive optical power, at least one of the sixth lens and the seventh lens has positive optical power, and
the effective focal length f8 of the eighth lens and the center thickness CT8 of the eighth lens satisfy the following relationship: 9.0< |f8/CT8| <13.0.
2. The optical imaging lens of claim 1, wherein the first lens has a convex object-side surface and a concave image-side surface.
3. The optical imaging lens of claim 1, wherein the object side surface of the second lens is convex.
4. The optical imaging lens of claim 1, wherein an image side surface of the third lens is concave.
5. The optical imaging lens of claim 1, wherein the eighth lens element has a convex object-side surface and a concave image-side surface.
6. The optical imaging lens of claim 1, wherein a sagittal height SAG82 of an image side surface of the eighth lens at a maximum effective aperture and a center thickness CT8 of the eighth lens satisfy the following relationship: 3.0< SAG82/CT8< -1.0.
7. The optical imaging lens of claim 1, wherein a center thickness CT3 of the third lens and a center thickness CT4 of the fourth lens satisfy the following relationship: CT3/CT4 is more than or equal to 0.5 and less than or equal to 1.0.
8. The optical imaging lens of claim 1, wherein an on-axis distance TTL from an object side center of the first lens to an imaging surface of the optical imaging lens and a half-diagonal length ImgH of an effective pixel area on the imaging surface satisfy the following relationship: TTL/ImgH is less than or equal to 1.6.
9. The optical imaging lens of any of claims 1-8, wherein an effective focal length f of the optical imaging lens and an entrance pupil diameter EPD of the optical imaging lens satisfy the following relationship: f/EPD is less than or equal to 2.0.
10. The optical imaging lens of any of claims 1-8, wherein an effective focal length f of the optical imaging lens and a radius of curvature R1 of an object side surface of the first lens satisfy the following relationship: 2.0< f/R1<2.5.
11. The optical imaging lens of any of claims 1-8, 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 the following relationship: 1.0< (R15+R16)/(R15-R16) <2.0.
12. The optical imaging lens of any of claims 1-8, wherein an effective focal length f8 of the eighth lens and a radius of curvature R16 of an image side of the eighth lens satisfy the following relationship: -3.0< f8/R16< -2.0.
13. The optical imaging lens of any of claims 1-8, wherein an effective focal length f of the optical imaging lens satisfies the following relationship with an effective focal length f1 of the first lens and an effective focal length f2 of the second lens: 0.5< |f/f1|+|f/f2| <1.5.
14. The optical imaging lens according to any one of claims 1 to 8, wherein an effective focal length f of the optical imaging lens and an effective focal length f8 of the eighth lens satisfy the following relationship: 1.0< |f/f8| <1.5.
15. The optical imaging lens according to any one of claims 1 to 8, wherein an air space T45 of the fourth lens and the fifth lens on the optical axis and an air space T67 of the sixth lens and the seventh lens on the optical axis satisfy the following relationship: 0.5< T45/T67<1.5.
16. The optical imaging lens of any of claims 1-8, wherein an effective focal length f of the optical imaging lens and a radius of curvature R16 of an image side surface of the eighth lens satisfy the following relationship: 2.0< f/R16<3.0.
17. The optical imaging lens according to any one of claims 1 to 8, wherein a center thickness CT4 of the fourth lens and an air interval T45 of the fourth lens and the fifth lens on the optical axis satisfy the following relationship: 2.5< CT4/T45<5.5.
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