WO2022063171A1 - 光学镜头、光学模组及电子设备 - Google Patents

光学镜头、光学模组及电子设备 Download PDF

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Publication number
WO2022063171A1
WO2022063171A1 PCT/CN2021/119880 CN2021119880W WO2022063171A1 WO 2022063171 A1 WO2022063171 A1 WO 2022063171A1 CN 2021119880 W CN2021119880 W CN 2021119880W WO 2022063171 A1 WO2022063171 A1 WO 2022063171A1
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WIPO (PCT)
Prior art keywords
lens
radius
optical
object side
focal length
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PCT/CN2021/119880
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English (en)
French (fr)
Inventor
何俊谚
Original Assignee
维沃移动通信有限公司
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Application filed by 维沃移动通信有限公司 filed Critical 维沃移动通信有限公司
Priority to EP21871540.7A priority Critical patent/EP4220268A4/en
Publication of WO2022063171A1 publication Critical patent/WO2022063171A1/zh
Priority to US18/125,100 priority patent/US20230236389A1/en

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/06Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/004Miniaturised 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 four lenses
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045Miniaturised 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/18Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration

Definitions

  • the application belongs to the technical field of communication equipment, and specifically relates to an optical lens, an optical module and an electronic device.
  • an ultra-wide-angle lens In order to pursue a large viewing angle, an ultra-wide-angle lens requires a small equivalent focal length, and in order to pursue high image quality, an ultra-wide-angle lens requires a large-sized photosensitive element.
  • smart electronic devices cannot take into account the equivalent focal length and photosensitive elements in the configuration of ultra-wide-angle lenses. size to achieve high image quality at large viewing angles.
  • Embodiments of the present application provide an optical lens, an optical module, and an electronic device, so as to solve the problem that the configuration of the ultra-wide-angle lens of the intelligent electronic device cannot take into account the equivalent focal length and the size of the photosensitive element.
  • an embodiment of the present application provides an optical lens, which includes sequentially from an object side to an image side along an optical axis:
  • a first lens with negative bending force the object side of the first lens is convex, and the image side of the first lens is concave;
  • the object side of the second lens is convex, and the image side of the second lens is concave;
  • a third lens with positive bending power the object side of the third lens is convex, and the image side of the third lens is concave;
  • a fourth lens with positive inflection power wherein both the object side and the image side of the fourth lens are convex
  • a fifth lens with negative bending force the object side and the image side of the fifth lens are both concave;
  • a sixth lens having a positive bending power the object side of the sixth lens is concave, and the image side of the sixth lens is convex;
  • a seventh lens with negative refracting power the object side surface of the seventh lens includes a first curved portion and a second curved portion, the first curved portion and the second curved portion are connected to form a convex surface, and the image of the seventh lens is
  • the side surface includes a third curved portion and a fourth curved portion, and the third curved portion and the fourth curved portion are connected to form a concave surface;
  • optical lens satisfies the following relationship:
  • V1 is the dispersion coefficient of the first lens
  • V2 is the dispersion coefficient of the second lens
  • V3 is the dispersion coefficient of the third lens
  • V4 is the dispersion coefficient of the fourth lens
  • V5 is the dispersion coefficient of the The dispersion coefficient of the fifth lens
  • V6 is the dispersion coefficient of the sixth lens
  • V7 is the dispersion coefficient of the seventh lens
  • N1 is the refractive index of the first lens
  • N2 is the refractive index of the second lens
  • N3 is the refractive index of the third lens
  • N4 is the refractive index of the fourth lens
  • N5 is the refractive index of the fifth lens
  • N6 is the refractive index of the sixth lens
  • N7 is the refractive index of the Refractive index of seven lenses.
  • an optical module including:
  • optical lens as described in the above embodiment
  • an embodiment of the present application further provides an electronic device, including the optical module described above.
  • the object side is convex and the image side is concave
  • the second lens with positive tortuous force Its object side is convex, and the image side of the second lens is concave
  • the third lens with positive inflection force has a convex object side, and its image side is concave
  • the fourth lens with positive inflection force has a concave object side and a convex
  • the seventh lens has a first curved portion and a second curved portion on the object side, the first curved portion and the second curved portion are connected to form a convex surface
  • the image side includes a third curved portion and a fourth curved portion, and the first curved portion and the first curved portion and the first curved portion and the first curved portion and are connected to form a convex surface
  • the image side includes a third curved portion and a fourth curved portion, and the first curved portion and
  • the optical lens with the above structure can take into account the equivalent focal length and the size of the photosensitive element, and the optical lens can take pictures with a large viewing angle and high image quality. User's shooting needs.
  • FIG. 1 is a schematic diagram of a hardware structure of an optical lens provided by an embodiment of the application.
  • FIG. 2 is one of schematic diagrams of field curvature/distortion curves of an optical lens provided by an embodiment of the application;
  • FIG. 4 is one of the longitudinal deviation curves of the optical lens provided by the embodiment of the application.
  • FIG. 5 is the second schematic diagram of the field curvature/distortion curve of the optical lens provided by the embodiment of the application;
  • FIG. 6 is the second relative illuminance curve diagram of the optical lens provided by the embodiment of the application.
  • FIG. 7 is the second longitudinal deviation curve diagram of the optical lens provided by the embodiment of the present application.
  • FIG. 8 is the third schematic diagram of the field curvature/distortion curve of the optical lens provided by the embodiment of the application.
  • FIG. 9 is the third graph of the relative illuminance curve of the optical lens provided by the embodiment of the application.
  • FIG. 10 is the third graph of the longitudinal deviation of the optical lens provided by the embodiment of the present application.
  • first, second and the like in the description and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and distinguish between “first”, “second”, etc.
  • the objects are usually of one type, and the number of objects is not limited.
  • the first object may be one or more than one.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the associated objects are in an "or” relationship.
  • DFOV represents the horizontal field of view
  • DFOV represents the vertical field of view
  • embodiments of the present application provide an optical lens, an optical module, and an electronic device.
  • the optical lens includes sequentially from the object side to the image side along the optical axis:
  • the second lens 2 with positive bending power, the object side of the second lens 2 is a convex surface, and the image side of the second lens 2 is a concave surface;
  • the third lens 3 with positive bending power, the object side of the third lens 3 is convex, and the image side of the third lens 3 is concave;
  • the fourth lens 4 with positive bending power, the object side and the image side of the fourth lens 4 are convex surfaces;
  • the fifth lens 5 with negative bending force, the object side and the image side of the fifth lens 5 are both concave;
  • the sixth lens 6 with positive bending power, the object side of the sixth lens 6 is a concave surface, and the image side of the sixth lens 6 is a convex surface;
  • a seventh lens 7 with negative bending force the object side of the seventh lens 7 includes a first curved part and a second curved part, the first curved part and the second curved part are connected to form a convex surface, the seventh lens
  • the image side surface of 7 includes a third curved portion and a fourth curved portion, and the third curved portion and the fourth curved portion are connected to form a concave surface;
  • optical lens satisfies the following relationship:
  • V1 is the dispersion coefficient of the first lens 1
  • V2 is the dispersion coefficient of the second lens 2
  • V3 is the dispersion coefficient of the third lens 3
  • V4 is the dispersion coefficient of the fourth lens 4
  • V5 is the dispersion coefficient of the fifth lens 5
  • V6 is the dispersion coefficient of the sixth lens 6
  • V7 is the dispersion coefficient of the seventh lens 7
  • N1 is the refractive index of the first lens 1
  • N2 is the The refractive index of the second lens 2
  • N3 is the refractive index of the third lens 3
  • N4 is the refractive index of the fourth lens 4
  • N5 is the refractive index of the fifth lens 5
  • N6 is the refractive index of the The refractive index of the sixth lens 6
  • N7 is the refractive index of the seventh lens 7 .
  • the object side of the lens specifically refers to the side away from the photosensitive element
  • the image side of the lens specifically refers to the side close to the photosensitive element
  • the object side surface of the seventh lens 7 includes a first curved portion and a second curved portion, and the first curved portion and the second curved portion are connected to form a convex surface
  • the image side surface of the seventh lens 7 includes The third curved portion and the fourth curved portion, the third curved portion and the fourth curved portion are connected to form a concave surface, indicating that the seventh lens has two curvature inversions, so that it can meet the requirements of the image side of the seventh lens.
  • the chief ray angle of the photosensitive element 8 (Chief Ray Angle, CRA)
  • N1 ⁇ N2 indicating that the first lens 1 is a low-refractive index lens, and the second lens 2 is a high-refractive index lens, which can reduce the cost without destroying the dispersion
  • the fourth lens 4 is a low-refractive index lens
  • the fifth lens 5 is a high-refractive index lens, which can reduce costs without destroying dispersion
  • N6 ⁇ N7 indicating that the sixth lens 6 is a
  • the optical lens of the embodiment of the present application includes a first lens with negative inflection force in sequence from the object side to the image side along the optical axis, the object side is convex, the image side is concave; the second lens with positive inflection force , its object side is convex, and the image side of the second lens is concave; the third lens with positive inflection force has a convex object side and its image side is concave; the fourth lens with positive inflection force has an object side Both the object side and the image side are convex; the fifth lens with negative tortuosity has both the object side and the image side concave; the sixth lens with positive tortuosity has a concave object side and a convex image side; it has a negative tortuosity
  • the seventh lens, its object side includes a first curved portion and a second curved portion, the first curved portion and the second curved portion are connected to form a convex surface, and its image side includes a third curved
  • the optical lens satisfies the following relationship:
  • R1 is the radius of the object side of the first lens 1
  • R2 is the radius of the image side of the first lens 1
  • R3 is the radius of the object side of the second lens 2
  • R4 is the second The radius of the image side of the lens 2
  • R5 is the radius of the object side of the third lens 3
  • R6 is the radius of the image side of the third lens 3
  • R7 is the radius of the object side of the fourth lens 4
  • R9 is the radius of the object side of the fifth lens 5
  • R10 is the radius of the image side of the fifth lens 5
  • R11 is the sixth lens 6
  • R12 is the radius of the image side of the sixth lens 6
  • R13 is the radius of the object side of the seventh lens 7
  • R14 is the radius of the image side of the seventh lens 7 .
  • optical lens satisfies the following relationship:
  • f1 is the focal length of the first lens 1
  • f2 is the focal length of the second lens 2
  • f3 is the focal length of the third lens 3
  • f4 is the focal length of the fourth lens 4
  • f5 is the focal length of the The focal length of the fifth lens 5
  • f6 is the focal length of the sixth lens 6
  • f7 is the focal length of the seventh lens 7;
  • the optical lens further comprises: an aperture 9 arranged between the third lens 3 and the fourth lens 4.
  • the aperture 9 is arranged between the third lens 3 and the fourth lens 4 to effectively control the aberration and have better manufacturing sensitivity, that is, it can satisfy a larger field of view and image height size.
  • the optical module including the optical lens includes a filter 10 , and the filter 10 is located between the seventh lens 7 and the photosensitive element 8 .
  • the filter 10 can be an infrared filter, which is suitable for the effective imaging size of the photosensitive element 8 with a diagonal length of 8.0mm-8.4mm, and is suitable for visible light, with a wavelength range of 400nm-700nm.
  • optical lens satisfies the following relationship:
  • CT1 is the central thickness of the first lens 1 on the optical axis
  • CT2 is the central thickness of the second lens 2 on the optical axis
  • CT3 is the third lens 3 on the optical axis
  • CT4 is the central thickness of the fourth lens 4 on the optical axis
  • CT5 is the central thickness of the fifth lens 5 on the optical axis
  • CT6 is the central thickness of the sixth lens 6 on the optical axis
  • CT7 is the central thickness of the seventh lens 7 on the optical axis.
  • This embodiment adopts an optical lens that satisfies the above size range, and its optical distortion is small, specifically, -2.5% ⁇ Optical distortion ⁇ 1.5%, which corresponds to the field of view distortion diagram shown in FIG. 2 .
  • Relative illumination>14.5%, see Figure 3; axial chromatic aberration, see Figure 4, HFOV 117 degrees, F2.2, 1.9mm ⁇ focal length EFL ⁇ 2.0mm.
  • the aspherical surface equation used is as follows, and the specific implementation parameters are shown in Table 2, the unit is mm, and Conic: is the K value in the aspherical surface equation.
  • the optical lens satisfies the following relationship:
  • R1 is the radius of the object side of the first lens 1
  • R2 is the radius of the image side of the first lens 1
  • R3 is the radius of the object side of the second lens 2
  • R4 is the second The radius of the image side of the lens 2
  • R5 is the radius of the object side of the third lens 3
  • R6 is the radius of the image side of the third lens 3
  • R7 is the radius of the object side of the fourth lens 4
  • R9 is the radius of the object side of the fifth lens 5
  • R10 is the radius of the image side of the fifth lens 5
  • R11 is the sixth lens 6
  • R12 is the radius of the image side of the sixth lens 6
  • R13 is the radius of the object side of the seventh lens 7
  • R14 is the radius of the image side of the seventh lens 7 .
  • the object side surface of the first lens 1 is convex, which can effectively avoid ghost-like stray light, and use a lens with a low refractive index to effectively suppress dispersion.
  • optical lens satisfies the following relationship:
  • f1 is the focal length of the first lens 1
  • f2 is the focal length of the second lens 2
  • f3 is the focal length of the third lens 3
  • f4 is the focal length of the fourth lens 4
  • f5 is the focal length of the The focal length of the fifth lens 5
  • f6 is the focal length of the sixth lens 6
  • f7 is the focal length of the seventh lens 7;
  • the optical lens further includes: a diaphragm disposed between the third lens 3 and the fourth lens 4 .
  • the aperture 9 is arranged between the third lens 3 and the fourth lens 4 to effectively control the aberration and have better manufacturing sensitivity, that is, it can satisfy a larger field of view and image height size.
  • the optical module including the optical lens includes a filter 10 , and the filter 10 is located between the seventh lens 7 and the photosensitive element 8 .
  • the filter 10 can be an infrared filter, which is suitable for the effective imaging size of the photosensitive element 8 with a diagonal length of 8.0mm-8.4mm, and is suitable for visible light, with a wavelength range of 400nm-700nm.
  • optical lens satisfies the following relationship:
  • CT1 is the central thickness of the first lens 1 on the optical axis
  • CT2 is the central thickness of the second lens 2 on the optical axis
  • CT3 is the third lens 3 on the optical axis
  • CT4 is the central thickness of the fourth lens 4 on the optical axis
  • CT5 is the central thickness of the fifth lens 5 on the optical axis
  • CT6 is the central thickness of the sixth lens 6 on the optical axis
  • CT7 is the central thickness of the seventh lens 7 on the optical axis.
  • This embodiment adopts an optical lens that satisfies the above size range, and its optical distortion is small, specifically, -3% ⁇ Optical distortion ⁇ 2%, which corresponds to the field of view distortion diagram shown in FIG. 5 .
  • Relative illumination>17.5%, see Figure 6; axial chromatic aberration, see Figure 7, HFOV 112 degrees, F2.2, 1.9mm ⁇ focal length EFL ⁇ 2.2mm.
  • the aspherical surface equation used is as follows, and the specific implementation parameters are shown in Table 3, the unit is mm, and Conic: is the K value in the aspherical surface equation.
  • the optical lens satisfies the following relationship:
  • R1 is the radius of the object side of the first lens 1
  • R2 is the radius of the image side of the first lens 1
  • R3 is the radius of the object side of the second lens 2
  • R4 is the second The radius of the image side of the lens 2
  • R5 is the radius of the object side of the third lens 3
  • R6 is the radius of the image side of the third lens 3
  • R7 is the radius of the object side of the fourth lens 4
  • R9 is the radius of the object side of the fifth lens 5
  • R10 is the radius of the image side of the fifth lens 5
  • R11 is the sixth lens 6
  • R12 is the radius of the image side of the sixth lens 6
  • R13 is the radius of the object side of the seventh lens 7
  • R14 is the radius of the image side of the seventh lens 7 .
  • optical lens satisfies the following relationship:
  • f1 is the focal length of the first lens 1
  • f2 is the focal length of the second lens 2
  • f3 is the focal length of the third lens 3
  • f4 is the focal length of the fourth lens 4
  • f5 is the focal length of the The focal length of the fifth lens 5
  • f6 is the focal length of the sixth lens 6
  • f7 is the focal length of the seventh lens 7;
  • the optical lens further includes: a diaphragm disposed between the third lens 3 and the fourth lens 4 .
  • the aperture 9 is arranged between the third lens 3 and the fourth lens 4, which can effectively control the aberration and have better manufacturing sensitivity, that is, it can meet the larger angle of view and the image height size.
  • the optical module including the optical lens includes a filter 10 , and the filter 10 is located between the seventh lens 7 and the photosensitive element 8 .
  • the filter 10 can be an infrared filter, which is suitable for the effective imaging size of the photosensitive element 8 with a diagonal length between 8.0 mm and 8.4 mm, suitable for visible light, and has a wavelength range of 400 nm to 700 nm.
  • optical lens satisfies the following relationship:
  • CT1 is the central thickness of the first lens 1 on the optical axis
  • CT2 is the central thickness of the second lens 2 on the optical axis
  • CT3 is the third lens 3 on the optical axis
  • CT4 is the central thickness of the fourth lens 4 on the optical axis
  • CT5 is the central thickness of the fifth lens 5 on the optical axis
  • CT6 is the central thickness of the sixth lens 6 on the optical axis
  • CT7 is the central thickness of the seventh lens 7 on the optical axis.
  • This embodiment adopts an optical lens that satisfies the above size range, and its optical distortion is small, specifically, -3.5% ⁇ Optical distortion ⁇ 1%, which corresponds to the field of view distortion diagram shown in FIG. 8 .
  • Relative illumination>13.4%, see Figure 9; axial chromatic aberration, see Figure 10, HFOV 117 degrees, F2.2, 1.9mm ⁇ focal length EFL ⁇ 2.2mm.
  • the aspherical surface equation used is as follows, and the specific implementation parameters are shown in Table 4, the unit is mm, and Conic: is the K value in the aspherical surface equation.
  • the first lens in the above table refers to the first lens 1
  • the second lens refers to the second lens 2
  • the third lens refers to the third lens 3
  • the fourth lens refers to the fourth lens.
  • Lens 4 and lens 5 specifically refer to the fifth lens 5
  • lens 6 specifically refers to the sixth lens 6
  • lens 7 specifically refers to the seventh lens 7 .
  • the lenses 7 are all aspherical lenses.
  • the optical lens of the embodiment of the present application includes a first lens with negative inflection force in sequence from the object side to the image side along the optical axis, the object side is convex, and the image side is concave; the second lens with positive inflection force , its object side is convex, and the image side of the second lens is concave; the third lens with positive inflection force has a convex object side and its image side is concave; the fourth lens with positive inflection force has an object side Both the object side and the image side are convex; the fifth lens with negative tortuosity has both the object side and the image side concave; the sixth lens with positive tortuosity has a concave object side and a convex image side; it has a negative tortuosity
  • the seventh lens, its object side includes a first curved portion and a second curved portion, the first curved portion and the second curved portion are connected to form a convex surface, and its image side includes a third
  • Embodiments of the present application also provide an optical module, including the optical lens described in the above-mentioned embodiments; a photosensitive element 8 ; a filter disposed between the seventh lens 7 of the optical lens and the photosensitive element 8 Sheet 10.
  • the long diagonal line of the photosensitive element 8 is greater than or equal to 1/2.0 inch, and the equivalent focal length of the optical lens is greater than or equal to 11 mm and less than or equal to 12 mm. In this way, it can be ensured that the optical module can realize a shorter equivalent focal length and a larger-sized photosensitive element at the same time.
  • Embodiments of the present application further provide an electronic device, including the optical module described above.

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Abstract

本申请提供公开了一种光学镜头、光学模组及电子设备。本申请光学镜头包括:通过沿着光轴由物侧至像侧依序包括具有负曲折力的第一透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力的第二透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力的第三透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力且双凸面的第四透镜;具有负曲折力且双凹面的第五透镜;具有正曲折力的第六透镜,其物侧面为凹面,像侧面为凸面;具有负曲折力的第七透镜,其物侧面包括形成凸面的第一弯曲部和第二弯曲部,其像侧面包括形成凹面的第三弯曲部和第四弯曲部。

Description

光学镜头、光学模组及电子设备
相关申请的交叉引用
本申请主张在2020年9月28日在中国提交的中国专利申请号No.202011041048.9的优先权,其全部内容通过引用包含于此。
技术领域
本申请属于通信设备技术领域,具体涉及一种光学镜头、光学模组及电子设备。
背景技术
目前随着移动通信技术的不断发展,智能电子设备(如手机)的普遍应用,对智能电子设备的摄像头要求越来越高,在智能电子设备上也会配置多种焦距段的镜头。其中在广角镜头的使用上,要求低畸变、更大的视角以及更高的像素,因此超广角镜头应运而生。
为了追求大视角,超广角镜头需要小的等效焦距,而为了追求高画质,超广角镜头需要大尺寸的感光元件,目前智能电子设备在超广角镜头的配置上无法做到兼顾等效焦距及感光元件大小,以实现大视角下的高画质。
发明内容
本申请实施例提供一种光学镜头、光学模组及电子设备,以解决智能电子设备在超广角镜头的配置上无法做到兼顾等效焦距及感光元件大小的问题。
为了解决上述技术问题,本申请是这样实现的:
第一方面,本申请的实施例提供了一种光学镜头,沿着光轴由物侧至像侧依序包括:
具有负曲折力的第一透镜,所述第一透镜的物侧面为凸面,所述第一透镜的像侧面为凹面;
具有正曲折力的第二透镜,所述第二透镜的物侧面为凸面,所述第二透镜的像侧面为凹面;
具有正曲折力的第三透镜,所述第三透镜的物侧面为凸面,所述第三透镜的像侧面为凹面;
具有正曲折力的第四透镜,所述第四透镜的物侧面和像侧面均为凸面;
具有负曲折力的第五透镜,所述第五透镜的物侧面和像侧面均为凹面;
具有正曲折力的第六透镜,所述第六透镜的物侧面为凹面,所述第六透镜的像侧面为凸面;
具有负曲折力的第七透镜,所述第七透镜的物侧面包括第一弯曲部和第二弯曲部,所述第一弯曲部和第二弯曲部连接形成凸面,所述第七透镜的像侧面包括第三弯曲部和第四弯曲部,所述第三弯曲部和所述第四弯曲部连接形成凹面;
所述光学镜头满足以下关系式:
0.7<V1/V2<5.2;
0.1<V2/V3<0.6;
0.2<V3/V4<1.8;
0.7<V4/V5<5.2;
0.1<V5/V6<0.6;
0.6<V6/V7<4.2;
N1<N2,N2>N3,N4<N5,N6<N5,N6<N7;
其中,V1为所述第一透镜的色散系数,V2为所述第二透镜的色散系数,V3为所述第三透镜的色散系数,V4为所述第四透镜的色散系数,V5为所述第五透镜的色散系数,V6为所述第六透镜的色散系数,V7为所述第七透镜的色散系数,N1为所述第一透镜的折射率,N2为所述第二透镜的折射率,N3为所述第三透镜的折射率,N4为所述第四透镜的折射率,N5为所述第五透镜的折射率,N6为所述第六透镜的折射率,N7为所述第七透镜的折射率。
第二方面,本申请的实施例还提供了一种光学模组,包括:
如上述实施例所述的光学镜头;
感光元件;
设于所述光学镜头的第七透镜与所述感光元件之间的滤光片。
第三方面,本申请实施例还提供了一种电子设备,包括如上述所述的光 学模组。
在本申请实施例中,通过沿着光轴由物侧至像侧依序包括具有负曲折力的第一透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力的第二透镜,其物侧面为凸面,所述第二透镜的像侧面为凹面;具有正曲折力的第三透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力的第四透镜,其物侧面和像侧面均为凸面;具有负曲折力的第五透镜,其物侧面和像侧面均为凹面;具有正曲折力的第六透镜,其物侧面为凹面,像侧面为凸面;具有负曲折力的第七透镜,其物侧面包括第一弯曲部和第二弯曲部,所述第一弯曲部和第二弯曲部连接形成凸面,其像侧面包括第三弯曲部和第四弯曲部,所述第三弯曲部和所述第四弯曲部连接形成凹面,如此,具有上述结构的光学镜头,能够兼顾等效焦距及感光元件大小,利用该光学镜头能够拍出大视角、高画质的画面,满足用户的拍摄需求。
附图说明
图1为本申请实施例提供的光学镜头的硬件结构示意图;
图2为本申请实施例提供的光学镜头的场曲率/畸变曲线示意图之一;
图3为本申请实施例提供的光学镜头的相对照度曲线图之一;
图4为本申请实施例提供的光学镜头的纵向偏差曲线图之一;
图5为本申请实施例提供的光学镜头的场曲率/畸变曲线示意图之二;
图6为本申请实施例提供的光学镜头的相对照度曲线图之二;
图7为本申请实施例提供的光学镜头的纵向偏差曲线图之二;
图8为本申请实施例提供的光学镜头的场曲率/畸变曲线示意图之三;
图9为本申请实施例提供的光学镜头的相对照度曲线图之三;
图10为本申请实施例提供的光学镜头的纵向偏差曲线图之三。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有作出创 造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请的说明书和权利要求书中的术语“第一”、“第二”等是用于区别类似的对象,而不用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换,以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施,且“第一”、“第二”等所区分的对象通常为一类,并不限定对象的个数,例如第一对象可以是一个,也可以是多个。此外,说明书以及权利要求中“和/或”表示所连接对象的至少其中之一,字符“/”,一般表示前后关联对象是一种“或”的关系。
在详述本申请实施例的光学镜头之前,为了便于理解,简要说明一下等效焦距与视场角FOV之间的换算关系,参见表1。
表1
等效焦距(mm) DFOV(度) HFOV(度)
11.0 126.1 117.1
12.0 122 112.6
13.0 118.0 108.3
14.0 114.2 104.3
15.0 110.5 100.4
16.0 107.0 96.7
17.0 103.7 93.3
18.0 100.5 90.0
其中,DFOV表示水平视场角,DFOV表示垂直视场角。
这里,由上表可知,等效焦距越小对应的视场角越大。另外,感光元件的尺寸越大,拍到的画面的画质也越高。而现有电子设备在超广角的配置上存在两难的局面,无法兼顾等效焦距及感光元件大小,以实现大视角下的高画质。
为了解决上述问题,本申请实施例提供了光学镜头、光学模组及电子设备。
下面结合附图,通过具体的实施例及其应用场景对本申请实施例提供的光学镜头进行详细地说明。
如图1所示,为本申请实施例提供的光学镜头的硬件结构示意图,该光学镜头,沿着光轴由物侧至像侧依序包括:
具有负曲折力的第一透镜1,所述第一透镜1的物侧面为凸面,所述第一透镜1的像侧面为凹面;
具有正曲折力的第二透镜2,所述第二透镜2的物侧面为凸面,所述第二透镜2的像侧面为凹面;
具有正曲折力的第三透镜3,所述第三透镜3的物侧面为凸面,所述第三透镜3的像侧面为凹面;
具有正曲折力的第四透镜4,所述第四透镜4的物侧面和像侧面均为凸面;
具有负曲折力的第五透镜5,所述第五透镜5的物侧面和像侧面均为凹面;
具有正曲折力的第六透镜6,所述第六透镜6的物侧面为凹面,所述第六透镜6的像侧面为凸面;
具有负曲折力的第七透镜7,所述第七透镜7的物侧面包括第一弯曲部和第二弯曲部,所述第一弯曲部和第二弯曲部连接形成凸面,所述第七透镜7的像侧面包括第三弯曲部和第四弯曲部,所述第三弯曲部和所述第四弯曲部连接形成凹面;
所述光学镜头满足以下关系式:
0.7<V1/V2<5.2;
0.1<V2/V3<0.6;
0.2<V3/V4<1.8;
0.7<V4/V5<5.2;
0.1<V5/V6<0.6;
0.6<V6/V7<4.2;
N1<N2,N2>N3,N4<N5,N6<N5,N6<N7;
其中,V1为所述第一透镜1的色散系数,V2为所述第二透镜2的色散系数,V3为所述第三透镜3的色散系数,V4为所述第四透镜4的色散系数,V5为所述第五透镜5的色散系数,V6为所述第六透镜6的色散系数,V7为 所述第七透镜7的色散系数,N1为所述第一透镜1的折射率,N2为所述第二透镜2的折射率,N3为所述第三透镜3的折射率,N4为所述第四透镜4的折射率,N5为所述第五透镜5的折射率,N6为所述第六透镜6的折射率,N7为所述第七透镜7的折射率。
需要说明的是,透镜的物侧面具体指的是远离感光元件的一面,透镜的像侧面具体指的是靠近感光元件的一面。
需要说明的是,所述第七透镜7的物侧面包括第一弯曲部和第二弯曲部,所述第一弯曲部和第二弯曲部连接形成凸面,所述第七透镜7的像侧面包括第三弯曲部和第四弯曲部,所述第三弯曲部和所述第四弯曲部连接形成凹面,说明第七透镜有两次曲率反转,从而能够满足设置在第七透镜的像侧面的感光元件8的主光线夹角(Chief Ray Angle,CRA)
这里,N1<N2,说明第一透镜1为低折射率的透镜,第二透镜2为高折射率的透镜,这样可以降低成本且不会破坏色散;N2>N3,说明第二透镜2为高折射率的透镜,第三透镜3为低折射率的透镜,这样可以降低成本且不会破坏色散;N4<N5,说明第三透镜3和第四透镜4均为低折射率的透镜,这样可降低成本;第四透镜4为低折射率的透镜,第五透镜5为高折射率的透镜,这样可以降低成本且不会破坏色散;N6<N5,说明第五透镜5为高折射率的透镜,第六透镜6为低折射率的透镜,这样可以降低成本且不会破坏色散;N6<N7,说明第六透镜6为低折射率的透镜,第七透镜7为高折射率的透镜,这样可以降低成本且不会破坏色散。
本申请实施例的光学镜头,通过沿着光轴由物侧至像侧依序包括具有负曲折力的第一透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力的第二透镜,其物侧面为凸面,所述第二透镜的像侧面为凹面;具有正曲折力的第三透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力的第四透镜,其物侧面和像侧面均为凸面;具有负曲折力的第五透镜,其物侧面和像侧面均为凹面;具有正曲折力的第六透镜,其物侧面为凹面,像侧面为凸面;具有负曲折力的第七透镜,其物侧面包括第一弯曲部和第二弯曲部,所述第一弯曲部和第二弯曲部连接形成凸面,其像侧面包括第三弯曲部和第四弯曲部,所述第三弯曲部和所述第四弯曲部连接形成凹面,如此,具有上述结构的光学 镜头,能够兼顾等效焦距及感光元件大小,利用该光学镜头能够拍出大视角、高画质的画面,满足用户的拍摄需求。
作为一可选地实现方式,所述光学镜头满足以下关系式:
8.6mm<R1<23.1mm,0.9mm<R2<2.5mm;
2.0mm<R3<5.3mm,2.6mm<R4<7.0mm;
2.5mm<R5<6.8mm,4.0mm<R6<10.7mm;
1.9mm<R7<5.2mm,-0.8mm<R8<-2.2mm;
3.8mm<R9<10.2mm,1.4mm<R10<3.6mm;
-2.1mm<R11<-5.7mm,-0.5mm<R12<-1.3mm;
1.6mm<R13<4.2mm,0.5mm<R14<1.3mm;
其中,R1为所述第一透镜1的物侧面的半径,R2为所述第一透镜1的像侧面的半径,R3为所述第二透镜2的物侧面的半径,R4为所述第二透镜2的像侧面的半径,R5为所述第三透镜3的物侧面的半径,R6为所述第三透镜3的像侧面的半径,R7为所述第四透镜4的物侧面的半径,R8为所述第四透镜4的像侧面的半径,R9为所述第五透镜5的物侧面的半径,R10为所述第五透镜5的像侧面的半径,R11为所述第六透镜6的物侧面的半径,R12为所述第六透镜6的像侧面的半径,R13为所述第七透镜7的物侧面的半径,R14为所述第七透镜7的像侧面的半径。
需要说明的是,8.6mm<R1<23.1mm,且第一透镜1的物侧面为凸面,这样可以有效避免产生鬼影类的杂散光,且使用低折射率的透镜,可以有效抑制色散。
进一步地,所述光学镜头满足以下关系式:
-2.9mm<f1<-4.4mm;15mm<f2<22.8mm,18.5mm<f3<28.1mm,1.7mm<f4<2.6mm,-4.8mm<f5<-7.4mm,1.6mm<f6<2.4mm,-1.7mm<f7<-2.6mm;
其中,f1为所述第一透镜1的焦距,f2为所述第二透镜2的焦距,f3为所述第三透镜3的焦距,f4为所述第四透镜4的焦距,f5为所述第五透镜5的焦距,f6为所述第六透镜6的焦距,f7为所述第七透镜7的焦距;
所述光学镜头还包括:设置于所述第三透镜3与所述第四透镜4之间的 光圈9。
需要说明的是,光圈9设置于第三透镜3和第四透镜4之间可以有效控制像差以及具有较好的制造敏感度,即能够满足较大的视场角以及像高尺寸。
这里,包含光学镜头的光学模组内,包括滤光片10,该滤光片10位于第七透镜7与感光元件8之间。这里,滤光片10可为红外线滤光片,其适用于感光元件8有效成像大小的对角长度介于8.0mm~8.4mm之间,适用于可见光,波长范围为400nm~700nm。
进一步地,所述光学镜头满足以下关系式:
0.6mm<CT1<0.8mm,0.5mm<CT2<0.8mm,0.3mm<CT3<0.4mm,0.8mm<CT4<1.1mm,0.3mm<CT5<0.4mm,0.8mm<CT6<1.0mm,0.4mm<CT7<0.5mm;
CT1为所述第一透镜1在所述光轴上的中心厚度,CT2为所述第二透镜2在所述光轴上的中心厚度,CT3为所述第三透镜3在所述光轴上的中心厚度,CT4为所述第四透镜4在所述光轴上的中心厚度,CT5为所述第五透镜5在所述光轴上的中心厚度,CT6为所述第六透镜6在所述光轴上的中心厚度,CT7为所述第七透镜7在所述光轴上的中心厚度。
本实施方式采用满足上述尺寸范围的光学镜头,其光学畸变Optical distortion量小,具体的,-2.5%<Optical distortion<1.5%,对应如图2所示的视场畸变图。相对照度Relative illumination>14.5%,参见图3;轴上色差参见图4,HFOV=117度、F2.2、1.9mm<焦距EFL<2.0mm。
其中,使用的非球面方程式如下,与具体实施的参数如表2,单位为mm,Conic:为非球面方程式中的K值。
Figure PCTCN2021119880-appb-000001
表2
注解 曲率半径 厚度 半径 Conic 材料Nd/Abbe
镜片一 15.01 0.612 3.265 17.795 1.54/55.98
  1.60 0.761 1.719 -1.533  
镜片二 3.45 0.599 1.547 1.818 1.67/19.24
  4.56 0.453 1.114 7.350  
镜片三 4.40 0.321 0.966 -24.910 1.54/55.98
  6.93 0.203 0.828 -85.682  
光圈   -0.067 0.646    
镜片四 3.37 0.856 0.697 3.754 1.54/55.98
  -1.41 0.041 0.928 -19.291  
镜片五 6.64 0.289 0.991 -4.772 1.67/19.24
  2.35 0.719 1.313 -7.597  
镜片六 -3.68 0.826 1.669 0.647 1.54/55.98
  -0.83 0.050 1.956 -4.529  
镜片七 2.74 0.437 2.755 -0.269 1.64/23.53
  0.81 0.674 3.110 -5.912  
滤光片   0.210 3.782    
A4 A6 A8 A10 A12 A14 A16
1.8339E-03 2.2147E-03 -6.0843E-04 8.3238E-05 -5.7770E-06 1.6794E-07 -5.6031E-13
2.5098E-02 -4.6840E-03 2.2060E-02 -1.1149E-02 3.6892E-03 -5.9192E-04 7.4488E-08
4.1047E-02 1.8275E-02 -1.1405E-02 1.6662E-02 -1.0978E-02 1.8656E-03 5.2744E-05
1.3537E-01 -3.0940E-02 1.4103E-01 -1.6805E-01 7.1396E-02 -4.0643E-03 1.7491E-04
2.0545E-04 -1.2972E-01 -1.6076E-01 3.1034E-01 -1.9782E-01 6.1971E-02 -7.2758E-05
-1.9872E-04 -1.3382E-01 -3.0066E-01 1.0694E+00 -1.2959E+00 7.0572E-01 5.9128E-03
             
7.8232E-02 -1.8809E-01 5.2884E-01 -1.0490E+00 7.8666E-01 8.6371E-02 -1.7317E-04
-4.5728E-01 8.5520E-01 -1.2596E+00 1.0490E+00 -4.3592E-01 1.1613E-02 1.5072E-02
-4.6017E-05 -7.3935E-01 2.0227E+00 -3.2921E+00 2.7900E+00 -1.0456E+00 -3.6702E-04
-9.7555E-02 5.8877E-02 -3.7789E-02 1.1004E-02 -1.1098E-03 4.0874E-05 -8.5527E-06
4.8400E-02 -3.0615E-02 6.1340E-03 1.0727E-03 -1.0320E-04 -1.2568E-04 1.4613E-06
-9.1610E-02 7.8088E-02 -4.2164E-02 1.5828E-02 -3.2432E-03 2.6100E-04 -8.9580E-08
-1.3384E-01 3.3464E-02 -5.7284E-03 7.0544E-04 -6.6428E-05 4.2712E-06 -1.3273E-07
-5.3309E-02 1.3200E-02 -2.4535E-03 2.6960E-04 -1.4725E-05 1.0536E-07 1.4849E-08
作为一可选地实现方式,所述光学镜头满足以下关系式:
4.1mm<R1<11mm,0.9mm<R2<2.4mm;
2.2mm<R3<5.8mm,2.6mm<R4<7.1mm;
2.5mm<R5<6.7mm,4.2mm<R6<11.2mm;
2.0mm<R7<5.4mm,-0.8mm<R8<-2.1mm;
4.0mm<R9<10.6mm,1.4mm<R10<3.6mm;
-1.7mm<R11<-4.6mm,-0.5mm<R12<-1.3mm;
1.6mm<R13<4.4mm,0.5mm<R14<1.2mm;
其中,R1为所述第一透镜1的物侧面的半径,R2为所述第一透镜1的像侧面的半径,R3为所述第二透镜2的物侧面的半径,R4为所述第二透镜2的像侧面的半径,R5为所述第三透镜3的物侧面的半径,R6为所述第三透镜3的像侧面的半径,R7为所述第四透镜4的物侧面的半径,R8为所述第四透镜4的像侧面的半径,R9为所述第五透镜5的物侧面的半径,R10为所述第五透镜5的像侧面的半径,R11为所述第六透镜6的物侧面的半径,R12为所述第六透镜6的像侧面的半径,R13为所述第七透镜7的物侧面的半径,R14为所述第七透镜7的像侧面的半径。
需要说明的是,4.1mm<R1<11mm,且第一透镜1的物侧面为凸面,这样可以有效避免产生鬼影类的杂散光,且使用低折射率的透镜,可以有效抑制色散。
进一步地,所述光学镜头满足以下关系式:
-3.3mm<f1<-5.1mm;21.6mm<f2<32.9mm,16.7mm<f3<25.5mm,1.7mm<f4<2.6mm,-4.8mm<f5<-7.3mm,1.6mm<f6<2.4mm,-1.7mm<f7<-2.5mm;
其中,f1为所述第一透镜1的焦距,f2为所述第二透镜2的焦距,f3为所述第三透镜3的焦距,f4为所述第四透镜4的焦距,f5为所述第五透镜5的焦距,f6为所述第六透镜6的焦距,f7为所述第七透镜7的焦距;
所述光学镜头还包括:设置于所述第三透镜3与所述第四透镜4之间的光圈。
需要说明的是,光圈9设置于第三透镜3和第四透镜4之间可以有效控制像差以及具有较好的制造敏感度,即能够满足较大的视场角以及像高尺寸。
这里,包含光学镜头的光学模组内,包括滤光片10,该滤光片10位于第七透镜7与感光元件8之间。这里,滤光片10可为红外线滤光片,其适用于感光元件8有效成像大小的对角长度介于8.0mm~8.4mm之间,适用于可见光,波长范围为400nm~700nm。
进一步地,所述光学镜头满足以下关系式:
0.3mm<CT1<0.5mm,0.5mm<CT2<0.7mm,0.3mm<CT3<0.4mm,0.8mm<CT4<1.1mm,0.3mm<CT5<0.4mm,0.8mm<CT6<1.1mm,0.4mm<CT7<0.6mm;
CT1为所述第一透镜1在所述光轴上的中心厚度,CT2为所述第二透镜2在所述光轴上的中心厚度,CT3为所述第三透镜3在所述光轴上的中心厚度,CT4为所述第四透镜4在所述光轴上的中心厚度,CT5为所述第五透镜5在所述光轴上的中心厚度,CT6为所述第六透镜6在所述光轴上的中心厚度,CT7为所述第七透镜7在所述光轴上的中心厚度。
本实施方式采用满足上述尺寸范围的光学镜头,其光学畸变Optical distortion量小,具体的,-3%<Optical distortion<2%,对应如图5所示的视场畸变图。相对照度Relative illumination>17.5%,参见图6;轴上色差参见图7,HFOV=112度、F2.2、1.9mm<焦距EFL<2.2mm。
其中,使用的非球面方程式如下,与具体实施的参数如表3,单位为mm,Conic:为非球面方程式中的K值。
Figure PCTCN2021119880-appb-000002
表3
注解 曲率半径 厚度 半径 Conic 材料Nd/Abbe
镜片一 7.147 0.383 2.813 5.197 1.54/55.98
  1.585 0.740 1.658 -1.602  
镜片二 3.782 0.549 1.446 4.922 1.67/19.24
  4.598 0.405 1.000 20.075  
镜片三 4.356 0.309 0.962 0.319 1.54/55.98
  7.285 0.223 0.847 -66.625  
光圈   -0.067 0.681    
镜片四 3.519 0.905 0.710 -22.303 1.54/55.98
  -1.391 0.045 0.943 -13.086  
镜片五 6.889 0.312 1.006 -156.166 1.67/19.24
  2.353 0.719 1.381 0.136  
镜片六 -2.966 0.884 1.620 -0.108 1.54/55.98
  -0.817 0.044 1.941 -4.353  
镜片七 2.834 0.450 2.885 -0.143 1.64/23.53
  0.802 0.690 3.235 -5.808  
滤光片   0.210 3.956    
A4 A6 A8 A10 A12 A14 A16
-3.1866E-03 2.4055E-03 -5.0869E-04 7.7565E-05 -7.4400E-06 3.3069E-07 0.0000E+00
3.2111E-02 -9.6591E-03 2.2761E-02 -1.3793E-02 5.3743E-03 -8.1370E-04 0.0000E+00
5.9161E-02 9.9495E-03 -9.6578E-03 1.1162E-02 -4.6391E-03 1.4396E-04 0.0000E+00
1.6723E-01 -5.4682E-02 1.0317E-01 -1.0234E-02 -8.8537E-02 5.0503E-02 0.0000E+00
0.0000E+00 -1.4135E-01 -7.1823E-02 7.2738E-02 4.8641E-02 -2.1814E-02 0.0000E+00
0.0000E+00 -1.7030E-01 -1.8737E-02 7.5699E-02 2.0194E-01 -1.4507E-01 0.0000E+00
             
1.4491E-01 -1.9148E-01 2.1718E-01 -1.1065E-01 -1.6275E-01 1.8832E-01 0.0000E+00
-3.5093E-01 4.7545E-01 -5.3545E-01 2.3137E-01 5.0934E-02 -7.1480E-02 0.0000E+00
0.0000E+00 -3.4307E-01 5.3895E-01 -6.3597E-01 4.1154E-01 -1.6423E-01 0.0000E+00
-1.5034E-01 7.6507E-02 -5.0865E-02 2.1449E-02 -4.4636E-03 2.7813E-04 0.0000E+00
3.3667E-02 -3.6280E-02 1.3371E-02 1.1740E-03 -9.8002E-04 1.8640E-05 0.0000E+00
-1.0410E-01 7.0592E-02 -3.9138E-02 1.6280E-02 -3.5053E-03 2.8577E-04 0.0000E+00
-1.3033E-01 3.3647E-02 -5.8960E-03 6.9555E-04 -6.4353E-05 4.6283E-06 -1.7408E-07
-4.8125E-02 1.2079E-02 -2.2631E-03 2.5432E-04 -1.4800E-05 1.8861E-07 1.0882E-08
作为一可选地实现方式,所述光学镜头满足以下关系式:
8.6mm<R1<23mm,0.9mm<R2<2.5mm;
2.0mm<R3<5.2mm,2.5mm<R4<6.8mm;
2.6mm<R5<7mm,3.8mm<R6<10.1mm;
1.9mm<R7<5mm,-0.8mm<R8<-2.2mm;
4.6mm<R9<12.3mm,1.4mm<R10<3.8mm;
-2mm<R11<-5.5mm,-0.5mm<R12<-1.3mm;
1.6mm<R13<4.3mm,0.5mm<R14<1.3mm;
其中,R1为所述第一透镜1的物侧面的半径,R2为所述第一透镜1的像侧面的半径,R3为所述第二透镜2的物侧面的半径,R4为所述第二透镜2的像侧面的半径,R5为所述第三透镜3的物侧面的半径,R6为所述第三透镜3的像侧面的半径,R7为所述第四透镜4的物侧面的半径,R8为所述第四透镜4的像侧面的半径,R9为所述第五透镜5的物侧面的半径,R10为所述第五透镜5的像侧面的半径,R11为所述第六透镜6的物侧面的半径,R12为所述第六透镜6的像侧面的半径,R13为所述第七透镜7的物侧面的半径,R14为所述第七透镜7的像侧面的半径。
需要说明的是,8.6mm<R1<23mm,且第一透镜1的物侧面为凸面,这样可以有效避免产生鬼影类的杂散光,且使用低折射率的透镜,可以有效抑制色散。
进一步地,所述光学镜头满足以下关系式:
-3mm<f1<-4.5mm;15.3mm<f2<23.3mm,22.6mm<f3<34.4mm,1.7mm<f4<2.6mm,-4.8mm<f5<-7.3mm,1.6mm<f6<2.5mm,-1.8mm<f7<-2.8mm;
其中,f1为所述第一透镜1的焦距,f2为所述第二透镜2的焦距,f3为所述第三透镜3的焦距,f4为所述第四透镜4的焦距,f5为所述第五透镜5的焦距,f6为所述第六透镜6的焦距,f7为所述第七透镜7的焦距;
所述光学镜头还包括:设置于所述第三透镜3与所述第四透镜4之间的光圈。
需要说明的是,光圈9设置于第三透镜3和第四透镜4之间可以有效控 制像差以及具有较好的制造敏感度,即能够满足较大的视场角以及像高尺寸。
这里,包含光学镜头的光学模组内,包括滤光片10,该滤光片10位于第七透镜7与感光元件8之间。这里,滤光片10可为红外线滤光片,其适用于感光元件8有效成像大小的对角长度介于8.0mm~8.4mm之间,适用于可见光,波长范围为400nm~700nm。
进一步地,所述光学镜头满足以下关系式:
0.6mm<CT1<0.8mm,0.6mm<CT2<0.8mm,0.3mm<CT3<0.4mm,0.7mm<CT4<1mm,0.3mm<CT5<0.4mm,0.7mm<CT6<1mm,0.4mm<CT7<0.6mm;
CT1为所述第一透镜1在所述光轴上的中心厚度,CT2为所述第二透镜2在所述光轴上的中心厚度,CT3为所述第三透镜3在所述光轴上的中心厚度,CT4为所述第四透镜4在所述光轴上的中心厚度,CT5为所述第五透镜5在所述光轴上的中心厚度,CT6为所述第六透镜6在所述光轴上的中心厚度,CT7为所述第七透镜7在所述光轴上的中心厚度。
本实施方式采用满足上述尺寸范围的光学镜头,其光学畸变Optical distortion量小,具体的,-3.5%<Optical distortion<1%,对应如图8所示的视场畸变图。相对照度Relative illumination>13.4%,参见图9;轴上色差参见图10,HFOV=117度、F2.2、1.9mm<焦距EFL<2.2mm。
其中,使用的非球面方程式如下,与具体实施的参数如表4,单位为mm,Conic:为非球面方程式中的K值。
Figure PCTCN2021119880-appb-000003
表4
注解 曲率半径 厚度 半径 Conic 材料Nd/Abbe
镜片一 14.899 0.610 3.247 18.263 1.54/55.98
  1.617 0.723 1.704 -1.506  
镜片二 3.400 0.616 1.549 1.798 1.67/19.24
  4.417 0.414 1.086 7.257  
镜片三 4.555 0.346 0.955 -27.132 1.54/55.98
  6.548 0.190 0.809 -102.557  
光圈   -0.067 0.636    
镜片四 3.246 0.818 0.700 3.585 1.54/55.98
  -1.423 0.041 0.920 -20.417  
镜片五 7.965 0.344 0.982 21.713 1.67/19.24
  2.479 0.685 1.343 -4.233  
镜片六 -3.552 0.815 1.690 -1.403 1.54/55.98
  -0.847 0.050 1.993 -4.241  
镜片七 2.773 0.488 2.989 -0.252 1.64/23.53
  0.843 0.654 3.248 -5.886  
滤光片   0.210 4.017    
A4 A6 A8 A10 A12 A14 A16
1.6717E-03 2.2316E-03 -6.0726E-04 8.3211E-05 -5.7889E-06 1.6764E-07 1.4820E-10
2.4451E-02 -4.2097E-03 2.2202E-02 -1.1083E-02 3.6529E-03 -6.0279E-04 -5.6906E-07
4.0471E-02 1.7912E-02 -1.2223E-02 1.6447E-02 -1.0983E-02 1.8801E-03 6.6582E-05
1.3842E-01 -3.5595E-02 1.4150E-01 -1.7196E-01 7.0048E-02 3.7162E-03 -1.7473E-03
-1.6975E-03 -1.3339E-01 -1.5762E-01 3.3418E-01 -2.0899E-01 -1.6708E-02 6.3973E-02
-1.0898E-03 -1.3797E-01 -3.1083E-01 1.0694E+00 -1.2872E+00 6.4562E-01 1.0557E-01
             
7.8356E-02 -1.9178E-01 5.2708E-01 -1.0584E+00 7.6979E-01 8.3740E-02 7.2447E-02
-4.6447E-01 8.9493E-01 -1.2958E+00 1.0158E+00 -4.0659E-01 5.5474E-02 -4.3682E-02
1.2647E-02 -7.4070E-01 2.0012E+00 -3.2776E+00 2.8035E+00 -1.0576E+00 -1.8175E-02
-1.0752E-01 6.3542E-02 -3.5757E-02 9.2411E-03 -1.3824E-03 5.2651E-04 -1.2139E-04
5.4769E-02 -3.3510E-02 7.5609E-03 5.6161E-04 -1.1805E-04 -6.5109E-05 -1.3057E-05
-9.6885E-02 8.4793E-02 -4.2704E-02 1.5663E-02 -3.2564E-03 2.6337E-04 7.8935E-07
-1.3193E-01 3.3434E-02 -5.7303E-03 7.0492E-04 -6.6499E-05 4.2679E-06 -1.3160E-07
-5.2675E-02 1.3235E-02 -2.4737E-03 2.7234E-04 -1.4633E-05 8.5501E-08 1.4699E-08
需要说明的是,上述表格中的镜片一具体指的是第一透镜1,镜片二具 体指的是第二透镜2,镜片三具体指的是第三透镜3,镜片四具体指的是第四透镜4,镜片五具体指的是第五透镜5,镜片六具体指的是第六透镜6,镜片七具体指的是第七透镜7。
可选地,所述第一透镜1、所述第二透镜2、所述第三透镜3、所述第四透镜4、所述第五透镜5、所述第六透镜6和所述第七透镜7均为非球面透镜。
本申请实施例的光学镜头,通过沿着光轴由物侧至像侧依序包括具有负曲折力的第一透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力的第二透镜,其物侧面为凸面,所述第二透镜的像侧面为凹面;具有正曲折力的第三透镜,其物侧面为凸面,像侧面为凹面;具有正曲折力的第四透镜,其物侧面和像侧面均为凸面;具有负曲折力的第五透镜,其物侧面和像侧面均为凹面;具有正曲折力的第六透镜,其物侧面为凹面,像侧面为凸面;具有负曲折力的第七透镜,其物侧面包括第一弯曲部和第二弯曲部,所述第一弯曲部和第二弯曲部连接形成凸面,其像侧面包括第三弯曲部和第四弯曲部,所述第三弯曲部和所述第四弯曲部连接形成凹面,如此,具有上述结构的光学镜头,能够兼顾等效焦距及感光元件大小,利用该光学镜头能够拍出大视角、高画质的画面,满足用户的拍摄需求。
本申请实施例还提供了一种光学模组,包括如上述实施例所述的光学镜头;感光元件8;设于所述光学镜头的第七透镜7与所述感光元件8之间的滤光片10。
可选地,所述感光元件8的对角线长线大于或者等于1/2.0英寸,且所述光学镜头的等效焦距大于或者等于11mm且小于或者等于12mm。如此,可确保该光学模组能够同时实现较短的等效焦距与较大尺寸的感光元件。
本申请实施例还提供了一种电子设备,包括如上述所述的光学模组。
需要说明的是,在本文中,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
上面结合附图对本申请的实施例进行了描述,但是本申请并不局限于上述的具体实施方式,上述的具体实施方式仅仅是示意性的,而不是限制性的,本领域的普通技术人员在本申请的启示下,在不脱离本申请宗旨和权利要求所保护的范围情况下,还可做出很多形式,均属于本申请的保护之内。
以上所述仅是本公开的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本公开原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视本公开的保护范围。

Claims (14)

  1. 一种光学镜头,沿着光轴由物侧至像侧依序包括:
    具有负曲折力的第一透镜,所述第一透镜的物侧面为凸面,所述第一透镜的像侧面为凹面;
    具有正曲折力的第二透镜,所述第二透镜的物侧面为凸面,所述第二透镜的像侧面为凹面;
    具有正曲折力的第三透镜,所述第三透镜的物侧面为凸面,所述第三透镜的像侧面为凹面;
    具有正曲折力的第四透镜,所述第四透镜的物侧面和像侧面均为凸面;
    具有负曲折力的第五透镜,所述第五透镜的物侧面和像侧面均为凹面;
    具有正曲折力的第六透镜,所述第六透镜的物侧面为凹面,所述第六透镜的像侧面为凸面;
    具有负曲折力的第七透镜,所述第七透镜的物侧面包括第一弯曲部和第二弯曲部,所述第一弯曲部和第二弯曲部连接形成凸面,所述第七透镜的像侧面包括第三弯曲部和第四弯曲部,所述第三弯曲部和所述第四弯曲部连接形成凹面;
    所述光学镜头满足以下关系式:
    0.7<V1/V2<5.2;
    0.1<V2/V3<0.6;
    0.2<V3/V4<1.8;
    0.7<V4/V5<5.2;
    0.1<V5/V6<0.6;
    0.6<V6/V7<4.2;
    N1<N2,N2>N3,N4<N5,N6<N5,N6<N7;
    其中,V1为所述第一透镜的色散系数,V2为所述第二透镜的色散系数,V3为所述第三透镜的色散系数,V4为所述第四透镜的色散系数,V5为所述第五透镜的色散系数,V6为所述第六透镜的色散系数,V7为所述第七透镜的色散系数,N1为所述第一透镜的折射率,N2为所述第二透镜的折射率, N3为所述第三透镜的折射率,N4为所述第四透镜的折射率,N5为所述第五透镜的折射率,N6为所述第六透镜的折射率,N7为所述第七透镜的折射率。
  2. 根据权利要求1所述的光学镜头,其中,所述光学镜头满足以下关系式:
    8.6mm<R1<23.1mm,0.9mm<R2<2.5mm;
    2.0mm<R3<5.3mm,2.6mm<R4<7.0mm;
    2.5mm<R5<6.8mm,4.0mm<R6<10.7mm;
    1.9mm<R7<5.2mm,-0.8mm<R8<-2.2mm;
    3.8mm<R9<10.2mm,1.4mm<R10<3.6mm;
    -2.1mm<R11<-5.7mm,-0.5mm<R12<-1.3mm;
    1.6mm<R13<4.2mm,0.5mm<R14<1.3mm;
    其中,R1为所述第一透镜的物侧面的半径,R2为所述第一透镜的像侧面的半径,R3为所述第二透镜的物侧面的半径,R4为所述第二透镜的像侧面的半径,R5为所述第三透镜的物侧面的半径,R6为所述第三透镜的像侧面的半径,R7为所述第四透镜的物侧面的半径,R8为所述第四透镜的像侧面的半径,R9为所述第五透镜的物侧面的半径,R10为所述第五透镜的像侧面的半径,R11为所述第六透镜的物侧面的半径,R12为所述第六透镜的像侧面的半径,R13为所述第七透镜的物侧面的半径,R14为所述第七透镜的像侧面的半径。
  3. 根据权利要求2所述的光学镜头,其中,所述光学镜头满足以下关系式:
    -2.9mm<f1<-4.4mm;15mm<f2<22.8mm,18.5mm<f3<28.1mm,1.7mm<f4<2.6mm,-4.8mm<f5<-7.4mm,1.6mm<f6<2.4mm,-1.7mm<f7<-2.6mm;
    其中,f1为所述第一透镜的焦距,f2为所述第二透镜的焦距,f3为所述第三透镜的焦距,f4为所述第四透镜的焦距,f5为所述第五透镜的焦距,f6为所述第六透镜的焦距,f7为所述第七透镜的焦距;
    所述光学镜头还包括:设置于所述第三透镜与所述第四透镜之间的光圈。
  4. 根据权利要求2所述的光学镜头,其中,所述光学镜头满足以下关系 式:
    0.6mm<CT1<0.8mm,0.5mm<CT2<0.8mm,0.3mm<CT3<0.4mm,0.8mm<CT4<1.1mm,0.3mm<CT5<0.4mm,0.8mm<CT6<1.0mm,0.4mm<CT7<0.5mm;
    CT1为所述第一透镜在所述光轴上的中心厚度,CT2为所述第二透镜在所述光轴上的中心厚度,CT3为所述第三透镜在所述光轴上的中心厚度,CT4为所述第四透镜在所述光轴上的中心厚度,CT5为所述第五透镜在所述光轴上的中心厚度,CT6为所述第六透镜在所述光轴上的中心厚度,CT7为所述第七透镜在所述光轴上的中心厚度。
  5. 根据权利要求1所述的光学镜头,其中,所述光学镜头满足以下关系式:
    4.1mm<R1<11mm,0.9mm<R2<2.4mm;
    2.2mm<R3<5.8mm,2.6mm<R4<7.1mm;
    2.5mm<R5<6.7mm,4.2mm<R6<11.2mm;
    2.0mm<R7<5.4mm,-0.8mm<R8<-2.1mm;
    4.0mm<R9<10.6mm,1.4mm<R10<3.6mm;
    -1.7mm<R11<-4.6mm,-0.5mm<R12<-1.3mm;
    1.6mm<R13<4.4mm,0.5mm<R14<1.2mm;
    其中,R1为所述第一透镜的物侧面的半径,R2为所述第一透镜的像侧面的半径,R3为所述第二透镜的物侧面的半径,R4为所述第二透镜的像侧面的半径,R5为所述第三透镜的物侧面的半径,R6为所述第三透镜的像侧面的半径,R7为所述第四透镜的物侧面的半径,R8为所述第四透镜的像侧面的半径,R9为所述第五透镜的物侧面的半径,R10为所述第五透镜的像侧面的半径,R11为所述第六透镜的物侧面的半径,R12为所述第六透镜的像侧面的半径,R13为所述第七透镜的物侧面的半径,R14为所述第七透镜的像侧面的半径。
  6. 根据权利要求5所述的光学镜头,其中,所述光学镜头满足以下关系式:
    -3.3mm<f1<-5.1mm;21.6mm<f2<32.9mm,16.7mm<f3<25.5mm, 1.7mm<f4<2.6mm,-4.8mm<f5<-7.3mm,1.6mm<f6<2.4mm,-1.7mm<f7<-2.5mm;
    其中,f1为所述第一透镜的焦距,f2为所述第二透镜的焦距,f3为所述第三透镜的焦距,f4为所述第四透镜的焦距,f5为所述第五透镜的焦距,f6为所述第六透镜的焦距,f7为所述第七透镜的焦距;
    所述光学镜头还包括:设置于所述第三透镜与所述第四透镜之间的光圈。
  7. 根据权利要求5所述的光学镜头,其中,所述光学镜头满足以下关系式:
    0.3mm<CT1<0.5mm,0.5mm<CT2<0.7mm,0.3mm<CT3<0.4mm,0.8mm<CT4<1.1mm,0.3mm<CT5<0.4mm,0.8mm<CT6<1.1mm,0.4mm<CT7<0.6mm;
    CT1为所述第一透镜在所述光轴上的中心厚度,CT2为所述第二透镜在所述光轴上的中心厚度,CT3为所述第三透镜在所述光轴上的中心厚度,CT4为所述第四透镜在所述光轴上的中心厚度,CT5为所述第五透镜在所述光轴上的中心厚度,CT6为所述第六透镜在所述光轴上的中心厚度,CT7为所述第七透镜在所述光轴上的中心厚度。
  8. 根据权利要求1所述的光学镜头,其中,所述光学镜头满足以下关系式:
    8.6mm<R1<23mm,0.9mm<R2<2.5mm;
    2.0mm<R3<5.2mm,2.5mm<R4<6.8mm;
    2.6mm<R5<7mm,3.8mm<R6<10.1mm;
    1.9mm<R7<5mm,-0.8mm<R8<-2.2mm;
    4.6mm<R9<12.3mm,1.4mm<R10<3.8mm;
    -2mm<R11<-5.5mm,-0.5mm<R12<-1.3mm;
    1.6mm<R13<4.3mm,0.5mm<R14<1.3mm;
    其中,R1为所述第一透镜的物侧面的半径,R2为所述第一透镜的像侧面的半径,R3为所述第二透镜的物侧面的半径,R4为所述第二透镜的像侧面的半径,R5为所述第三透镜的物侧面的半径,R6为所述第三透镜的像侧面的半径,R7为所述第四透镜的物侧面的半径,R8为所述第四透镜的像侧 面的半径,R9为所述第五透镜的物侧面的半径,R10为所述第五透镜的像侧面的半径,R11为所述第六透镜的物侧面的半径,R12为所述第六透镜的像侧面的半径,R13为所述第七透镜的物侧面的半径,R14为所述第七透镜的像侧面的半径。
  9. 根据权利要求8所述的光学镜头,其中,所述光学镜头满足以下关系式:
    -3mm<f1<-4.5mm;15.3mm<f2<23.3mm,22.6mm<f3<34.4mm,1.7mm<f4<2.6mm,-4.8mm<f5<-7.3mm,1.6mm<f6<2.5mm,-1.8mm<f7<-2.8mm;
    其中,f1为所述第一透镜的焦距,f2为所述第二透镜的焦距,f3为所述第三透镜的焦距,f4为所述第四透镜的焦距,f5为所述第五透镜的焦距,f6为所述第六透镜的焦距,f7为所述第七透镜的焦距;
    所述光学镜头还包括:设置于所述第三透镜与所述第四透镜之间的光圈。
  10. 根据权利要求8所述的光学镜头,其中,所述光学镜头满足以下关系式:
    0.6mm<CT1<0.8mm,0.6mm<CT2<0.8mm,0.3mm<CT3<0.4mm,0.7mm<CT4<1mm,0.3mm<CT5<0.4mm,0.7mm<CT6<1mm,0.4mm<CT7<0.6mm;
    CT1为所述第一透镜在所述光轴上的中心厚度,CT2为所述第二透镜在所述光轴上的中心厚度,CT3为所述第三透镜在所述光轴上的中心厚度,CT4为所述第四透镜在所述光轴上的中心厚度,CT5为所述第五透镜在所述光轴上的中心厚度,CT6为所述第六透镜在所述光轴上的中心厚度,CT7为所述第七透镜在所述光轴上的中心厚度。
  11. 根据权利要求1所述的光学镜头,其中,所述第一透镜、所述第二透镜、所述第三透镜、所述第四透镜、所述第五透镜、所述第六透镜和所述第七透镜均为非球面透镜。
  12. 一种光学模组,包括:
    如权利要求1至11任一项所述的光学镜头;
    感光元件;
    设于所述光学镜头的第七透镜与所述感光元件之间的滤光片。
  13. 根据权利要求12所述的光学模组,其中,所述感光元件的对角线长线大于或者等于1/2.0英寸,且所述光学镜头的等效焦距大于或者等于11mm且小于或者等于12mm。
  14. 一种电子设备,包括如权利要求12至13任一项所述的光学模组。
PCT/CN2021/119880 2020-09-28 2021-09-23 光学镜头、光学模组及电子设备 WO2022063171A1 (zh)

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