WO2018045607A1 - 摄像镜头 - Google Patents

摄像镜头 Download PDF

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Publication number
WO2018045607A1
WO2018045607A1 PCT/CN2016/099626 CN2016099626W WO2018045607A1 WO 2018045607 A1 WO2018045607 A1 WO 2018045607A1 CN 2016099626 W CN2016099626 W CN 2016099626W WO 2018045607 A1 WO2018045607 A1 WO 2018045607A1
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WIPO (PCT)
Prior art keywords
lens
aspherical
imaging
object side
imaging lens
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PCT/CN2016/099626
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English (en)
French (fr)
Inventor
李明
Original Assignee
浙江舜宇光学有限公司
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Priority to US15/569,294 priority Critical patent/US10310226B2/en
Publication of WO2018045607A1 publication Critical patent/WO2018045607A1/zh

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    • 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
    • G02B13/04Reversed telephoto objectives
    • 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
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00Simple or compound lenses
    • G02B3/0006Arrays
    • G02B3/0037Arrays characterized by the distribution or form of lenses
    • G02B3/0062Stacked lens arrays, i.e. refractive surfaces arranged in at least two planes, without structurally separate optical elements in-between
    • 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

Definitions

  • the present invention relates to optical imaging technology, and more particularly to an imaging lens.
  • the photosensitive elements of general optical systems include photosensitive coupling elements (CCD) or complementary metal oxide semiconductor elements (CMOS).
  • CCD photosensitive coupling elements
  • CMOS complementary metal oxide semiconductor elements
  • the pixel size of photosensitive elements is reduced, optical systems tend to be higher pixels, and higher imaging quality .
  • image pickup lenses applied to imaging devices such as mobile phones, digital cameras, automobiles, and surveillance devices are further required to have high pixels, miniaturization, and wide angle.
  • the optical system adopts a seven-chip camera lens structure, which has a relatively sufficient angle of view while ensuring miniaturization and weight reduction, and can correct system aberrations and obtain high resolution.
  • the field of view of the camera lens is less than 100 degrees, and the wide-angle feature still has room for further optimization, and the resolution of the camera lens is not ideal enough to meet the higher requirements of the market for the camera lens.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention needs to provide an imaging lens.
  • the imaging lens of the embodiment of the present invention includes, in order from the object side to the image side, in order:
  • a seventh lens having a power, the object side and the image side are aspherical;
  • the camera lens satisfies the conditional expression:
  • f1 is the effective focal length of the first lens
  • f is the effective focal length of the imaging lens
  • the object side of the third lens is convex.
  • the fourth lens has a positive power with a convex side and a side convex surface.
  • the camera lens satisfies a conditional expression:
  • R5 is a radius of curvature of an object side surface of the third lens
  • R7 is a radius of curvature of an object side surface of the fourth lens.
  • the fifth lens has a negative refractive power
  • the object side is a convex surface
  • the image side surface is a concave surface
  • the imaging lens satisfies the conditional expression:
  • f5 is the effective focal length of the fifth lens
  • f is the effective focal length of the imaging lens
  • the sixth lens has a positive power with a convex side as the image side.
  • the camera lens satisfies a conditional expression:
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface; f is the effective focal length of the imaging lens.
  • the camera lens satisfies a conditional expression:
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens to the seventh lens
  • TTL is the on-axis distance from the object side of the first lens to the imaging surface.
  • the camera lens satisfies a conditional expression:
  • CT2 is the center thickness of the second lens on the optical axis
  • CT5 is the center thickness of the fifth lens on the optical axis.
  • the camera lens satisfies a conditional expression:
  • CT3 is the center thickness of the third lens on the optical axis
  • CT6 is the center thickness of the sixth lens on the optical axis
  • TTL is the on-axis distance from the object side of the first lens to the imaging surface.
  • the camera lens satisfies a conditional expression:
  • SAG71 is an on-axis distance between an intersection of an object side surface and an optical axis of the seventh lens to an effective radius vertex of the object side of the first lens
  • CT7 is a center thickness of the seventh lens on the optical axis .
  • the camera lens satisfies a conditional expression:
  • DT11 is the effective radius of the object side surface of the first lens
  • DT72 is the effective radius of the image side surface of the seventh lens.
  • the camera lens satisfies a conditional expression:
  • DT21 is the effective radius of the object side surface of the second lens
  • DT52 is the effective radius of the image side surface of the fifth lens.
  • the imaging lens of the embodiment of the invention can effectively correct various high-order aberrations, so that the distortion change is small and the contrast is higher; and the resolution is improved, and the size is smaller, and can be applied to different working environments.
  • FIG. 1 is a schematic structural view of an image pickup lens of Embodiment 1;
  • FIG. 2 is an axial chromatic aberration diagram (mm) of the imaging lens of Embodiment 1
  • FIG. 3 is an astigmatism diagram (mm) of the imaging lens of Embodiment 1
  • FIG. 4 is a distortion diagram (%) of the imaging lens of Embodiment 1.
  • Figure 5 is a magnification chromatic aberration diagram ( ⁇ m) of the imaging lens of Embodiment 1;
  • FIG. 6 is a schematic structural view of an image pickup lens of Embodiment 2;
  • FIG. 7 is an axial chromatic aberration diagram (mm) of the imaging lens of Example 2;
  • FIG. 8 is an astigmatism diagram (mm) of the imaging lens of Embodiment 2; and
  • FIG. 9 is a distortion diagram (%) of the imaging lens of Embodiment 2.
  • Figure 10 is a magnification chromatic aberration diagram ( ⁇ m) of the imaging lens of Embodiment 2;
  • FIG. 11 is a schematic structural view of an image pickup lens of Embodiment 3.
  • FIG. 12 is an axial chromatic aberration diagram (mm) of the imaging lens of Embodiment 3;
  • FIG. 13 is an astigmatism diagram (mm) of the imaging lens of Embodiment 3;
  • FIG. 14 is a distortion diagram (%) of the imaging lens of Embodiment 3.
  • 15 is a magnification chromatic aberration diagram ( ⁇ m) of the imaging lens of Embodiment 3;
  • FIG. 16 is a schematic structural view of an image pickup lens of Embodiment 4.
  • FIG. 17 is an axial chromatic aberration diagram (mm) of the imaging lens of Example 4;
  • FIG. 18 is an astigmatism diagram (mm) of the imaging lens of Example 4; and
  • FIG. 19 is a distortion diagram (%) of the imaging lens of Embodiment 4.
  • 20 is a magnification chromatic aberration diagram ( ⁇ m) of the imaging lens of Embodiment 4;
  • FIG. 21 is a schematic structural diagram of an image pickup lens of Embodiment 5.
  • FIG. 22 is an axial chromatic aberration diagram (mm) of the five imaging lens of the embodiment
  • FIG. 23 is an astigmatism diagram (mm) of the imaging lens of the fifth embodiment
  • FIG. 24 is a distortion diagram (%) of the imaging lens of the fifth embodiment.
  • 25 is a magnification chromatic aberration diagram ( ⁇ m) of the imaging lens of Embodiment 5;
  • Figure 26 is a schematic structural view of an image pickup lens of Embodiment 6;
  • FIG. 27 is an axial chromatic aberration diagram (mm) of the imaging lens of Example 6
  • FIG. 28 is an astigmatism diagram (mm) of the imaging lens of Example 6
  • FIG. 29 is a distortion diagram (%) of the imaging lens of Example 6.
  • 30 is a magnification chromatic aberration diagram ( ⁇ m) of the imaging lens of Embodiment 6;
  • Figure 31 is a schematic structural view of an image pickup lens of Embodiment 7.
  • FIG. 32 is an axial chromatic aberration diagram (mm) of the imaging lens of Embodiment 7
  • FIG. 33 is an astigmatism diagram (mm) of the imaging lens of Embodiment 7
  • FIG. 34 is a distortion diagram (%) of the imaging lens of Embodiment 7.
  • 35 is a magnification chromatic aberration diagram ( ⁇ m) of the imaging lens of Embodiment 7;
  • FIG. 36 is a schematic structural diagram of an image pickup lens of Embodiment 8.
  • FIG. 37 is an axial chromatic aberration diagram (mm) of the imaging lens of Example 8
  • FIG. 38 is an astigmatism diagram (mm) of the imaging lens of Example 8
  • FIG. 39 is a distortion diagram (%) of the imaging lens of Example 8.
  • 40 is a magnification chromatic aberration diagram ( ⁇ m) of the image pickup lens of Example 8.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” or “second” may include one or more of the described features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • connection In the description of the present invention, it should be noted that the terms “installation”, “connected”, and “connected” are to be understood broadly, and may be fixed or detachable, for example, unless otherwise explicitly defined and defined. Connected, or integrally connected; may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • Connected, or integrally connected may be mechanically connected, may be electrically connected or may communicate with each other; may be directly connected, or may be indirectly connected through an intermediate medium, may be internal communication of two elements or interaction of two elements relationship.
  • the first feature "on” or “under” the second feature may include direct contact of the first and second features, and may also include first and second features, unless otherwise specifically defined and defined. It is not in direct contact but through additional features between them.
  • the first feature "above”, “above” and “above” the second feature includes the first feature directly above and above the second feature, or merely indicating that the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below and below the second feature, or merely the first feature level being less than the second feature.
  • an imaging lens includes, in order from the object side to the image side, a first lens L1 having a negative refractive power, a second lens L2 having a refractive power, and a third lens L3 having a positive refractive power.
  • the first lens L1 has an object side surface S1 and an image side surface S2.
  • the second lens L2 has an object side surface S3 and an image side surface S4.
  • the third lens L3 has an object side surface S5 and an image side surface S6, and the image side surface S6 is a concave surface.
  • the fourth lens L4 has an object side surface S7 and an image side surface S8.
  • the fifth lens L5 has an object side surface S9 and an image side surface S10.
  • the sixth lens L6 has an object side surface S11 and an image side surface S12.
  • the seventh lens E7 has an object side surface S13 and an image side surface S14, and both the object side surface S13 and the image side surface S14 are aspherical.
  • the imaging lens further includes a stop STO disposed between the third lens L3 and the fourth lens L4.
  • the light emitted or reflected by the subject OBJ enters the imaging lens from the first lens L1 and passes through the filter L8 having the object side surface S15 and the image side surface S16, and finally images the imaging surface S17.
  • the camera lens satisfies the conditional expression:
  • f1 is the effective focal length of the first lens L1
  • f is the effective focal length of the imaging lens
  • the object side S5 of the third lens L3 is convex.
  • the fourth lens L4 has a positive power
  • the object side surface S7 is a convex surface
  • the image side surface S8 is a convex surface
  • the fourth lens L4 bears the main power of the imaging lens, and satisfies the above conditions to neutralize the negative aberration caused by the first three lenses, and has a small aperture behind the aperture STO, which maximizes the control of high-level aberrations. Introduced.
  • the camera lens satisfies the conditional expression:
  • R5 is a radius of curvature of the object side surface S5 of the third lens L3; and R7 is a radius of curvature of the object side surface S7 of the fourth lens L4.
  • Satisfying the above conditional expression can better control the vertical axis chromatic aberration and avoid the introduction of high-level aberrations in chromatic aberration.
  • the fifth lens L5 has a negative refractive power
  • the object side surface S9 is a convex surface
  • the image side surface S10 is a concave surface
  • the imaging lens satisfies the conditional expression:
  • f5 is the effective focal length of the fifth lens L5
  • f is the effective focal length of the imaging lens
  • the main function of the fifth lens L5 is to cancel the cumulative spherical aberration and chromatic aberration generated by the first few lenses, and the limitation of the outer diameter range of the fifth lens L5 is advantageous for easy installation in engineering.
  • the sixth lens L6 has a positive power, and the image side surface S12 is convex.
  • the sixth lens L6 to function as a field lens, and collecting light in a small range, which is advantageous for miniaturization of the imaging lens.
  • the camera lens satisfies the conditional expression:
  • ImgH is half of the diagonal length of the effective pixel area on the imaging surface S17; f is the effective focal length of the imaging lens.
  • the focal length is too long means a large negative distortion, too short will have poor processability, and it is not easy to ensure the brightness of the edge image surface.
  • the above conditional expression is satisfied while taking into account distortion, image quality and manufacturability.
  • the camera lens satisfies the conditional expression:
  • ⁇ T is the sum of the axial distances between any two adjacent lenses of the first lens L1 to the seventh lens L7; TTL is the on-axis distance from the object side surface S1 of the first lens L1 to the imaging surface S17.
  • the camera lens satisfies the conditional expression:
  • CT2 is the center thickness of the second lens L2 on the optical axis
  • CT5 is the center thickness of the fifth lens L5 on the optical axis.
  • the thickness of the second lens L2 and the fifth lens L5 is too large to correct the correction of the monochromatic aberration, and too small is disadvantageous to the lens manufacturing and assembly. Satisfying the above conditional formula can better balance the feasibility of processability and performance.
  • the camera lens satisfies the conditional expression:
  • CT3 is the center thickness of the third lens L3 on the optical axis
  • CT6 is the center thickness of the sixth lens L6 on the optical axis
  • TTL is the on-axis distance from the object side surface S1 of the first lens L1 to the imaging plane S17.
  • the ratio is too large, the power distribution of the entire lens of the camera lens is affected. If the ratio is too small, the processability is greatly reduced. This ratio range is a reasonable distribution of power and is advantageous for manufacturing.
  • the camera lens satisfies the conditional expression:
  • the SAG 71 is an on-axis distance between the intersection of the object side surface S13 of the seventh lens L7 and the optical axis to the apex of the effective radius of the object side surface S1 of the first lens L1, and CT7 is the center thickness of the seventh lens L7 on the optical axis.
  • the ratio range effectively solves the field curvature of the lens, reduces the distortion aberration, and increases the caliber of the lens while ensuring the processability of the product, which is beneficial to miniaturization of the lens.
  • the camera lens satisfies the conditional expression:
  • DT11 is the effective radius of the object side surface S1 of the first lens L1;
  • DT72 is the effective radius of the image side surface S14 of the seventh lens L7.
  • Satisfying the above conditional expression can effectively control the beam width of each field of view, thereby increasing the phase contrast value; and effectively balancing the lens size and processability.
  • the camera lens satisfies the conditional expression:
  • DT21 is the effective radius of the object side surface S3 of the second lens L2;
  • DT52 is the effective radius of the image side surface S10 of the fifth lens L5.
  • the first lens L1, the second lens L2, the third lens L3, the fourth lens L4, the fifth lens L5, the sixth lens L6, and the seventh lens L7 are all aspherical lenses.
  • the aspherical shape is determined by the following formula:
  • h is the height from any point on the aspheric surface to the optical axis
  • c is the curvature of the vertex
  • k is the cone constant
  • Ai is the correction coefficient of the i-th order of the aspheric surface.
  • the camera lens satisfies the conditions of the following table:
  • the camera lens satisfies the conditions of the following table:
  • the camera lens satisfies the conditions of the following table:
  • the camera lens satisfies the conditions of the following table:
  • the camera lens satisfies the conditions of the following table:
  • the camera lens satisfies the conditions of the following table:
  • the camera lens satisfies the conditions of the following table:
  • the camera lens satisfies the conditions of the following table:
  • the angle of view of the imaging lens can be effectively increased, and at the same time, sufficient brightness is ensured at the edge of the imaging surface S17, which is advantageous for widening the angle of the imaging lens.
  • the above conditional expressions are satisfied, and the above conditional expression is satisfied, so that the camera lens can effectively correct various high-order aberrations, so that the distortion change is small and the contrast is higher; It has a smaller size and can be applied to different working environments while improving the resolution.

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

Abstract

一种摄像镜头,从物侧至像侧依次包括:具有负光焦度的第一透镜(L1);具有光焦度的第二透镜(L2);具有正光焦度的第三透镜(L3),其像侧面为凹面;具有光焦度的第四透镜(L4);具有光焦度的第五透镜(L5);具有光焦度的第六透镜(L6);及具有光焦度的第七透镜(L7),其物侧面和像侧面均为非球面。摄像镜头满足条件式:-2<f1/f<-1.4,其中,f1为第一透镜(L1)的有效焦距,f为摄像镜头的有效焦距。本摄像镜头能够有效地校正各种高阶像差,使得畸变更小,相对照度更高,并且在提升解像力的同时,具有更小尺寸,能够适用于不同的工作环境。

Description

摄像镜头
优先权信息
本申请请求2016年9月6日向中国国家知识产权局提交的、专利申请号为201610807672.2的专利申请的优先权和权益,并且通过参照将其全文并入此处。
技术领域
本发明涉及光学成像技术,特别涉及一种摄像镜头。
背景技术
随着科技的发展,便携式电子产品逐步兴起,特别是具有摄像功能的便携式电子产品得到人们更多的青睐。一般光学系统的感光元件包括感光耦合元件(CCD)或互补性氧化金属半导体元件(CMOS),随着半导体制程技术发展,感光元件的像素尺寸缩小,光学系统趋向于更高像素,更高成像质量。为了满足这些趋势,对于应用在手机、数码相机、汽车、监视等摄像装置上的摄像镜头也进一步要求高像素、小型化及广角化。
专利号为“US20160109687A1”的美国专利提出了一种光学系统。光学系统采用七片式摄像镜头结构,在保证小型化、轻量化的同时具有相对充足的视场角,可以修正系统像差,获得较高的解像力。但是摄像镜头的视场角均小于100度,广角化特点仍有可以进一步优化的空间,而且摄像镜头的解像力也不够理想,不足以满足市场对于摄像镜头的更高要求。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此,本发明需要提供一种摄像镜头。
本发明实施方式的摄像镜头从物侧至像侧依次包括:
具有负光焦度的第一透镜;
具有光焦度的第二透镜;
具有正光焦度的第三透镜,其像侧面为凹面;
具有光焦度的第四透镜;
具有光焦度的第五透镜;
具有光焦度的第六透镜;及
具有光焦度的第七透镜,其物侧面和像侧面均为非球面;
所述摄像镜头满足条件式:
-2<f1/f<-1.4;
其中,f1为所述第一透镜的有效焦距,f为所述摄像镜头的有效焦距。
在某些实施方式中,所述第三透镜的物侧面为凸面。
在某些实施方式中,所述第四透镜具有正光焦度,其物侧面为凸面,像侧面为凸面。
在某些实施方式中,所述摄像镜头满足条件式:
0.5<R5/R7<1;
其中,R5为所述第三透镜的物侧面的曲率半径;R7为所述第四透镜的物侧面的曲率半径。
在某些实施方式中,所述第五透镜具有负光焦度,其物侧面为凸面,像侧面为凹面,所述摄像镜头满足条件式:
-4.1<f5/f<-3.5;
其中,f5为所述第五透镜的有效焦距,f为所述摄像镜头的有效焦距。
在某些实施方式中,所述第六透镜具有正光焦度,其像侧面为凸面。
在某些实施方式中,所述摄像镜头满足条件式:
1.7<ImgH/f<2;
其中,ImgH为成像面上有效像素区域对角线长的一半;f为所述摄像镜头的有效焦距。
在某些实施方式中,所述摄像镜头满足条件式:
0.18<ΣT/TTL<0.45;
其中,ΣT为所述第一透镜至所述第七透镜任意相邻两透镜之间轴上间隔距离的总和;TTL为所述第一透镜的物侧面至成像面的轴上距离。
在某些实施方式中,所述摄像镜头满足条件式:
0.95<CT2/CT5<1.5;
其中,CT2为所述第二透镜在光轴上的中心厚度,CT5为所述第五透镜在光轴上的中心厚度。
在某些实施方式中,所述摄像镜头满足条件式:
0.18<(CT3+CT6)/TTL<0.5;
其中,CT3为所述第三透镜在光轴上的中心厚度,CT6为所述第六透镜在光轴上的中心厚度,TTL为所述第一透镜的物侧面至成像面的轴上距离。
在某些实施方式中,所述摄像镜头满足条件式:
-1.6<SAG71/CT7<-1;
其中,SAG71为所述第七透镜的物侧面和光轴的交点至所述第一透镜的物侧面的有效半径顶点之间的轴上距离,CT7为所述第七透镜在光轴上的中心厚度。
在某些实施方式中,所述摄像镜头满足条件式:
0.9<DT11/DT72<1.2;
其中,DT11为所述第一透镜的物侧面的有效半径;DT72为所述第七透镜的像侧面的有效半径。
在某些实施方式中,所述摄像镜头满足条件式:
0.8<DT21/DT52<1.1;
其中,DT21为所述第二透镜的物侧面的有效半径;DT52为所述第五透镜的像侧面的有效半径。
本发明实施方式的摄像镜头能有效矫正各种高阶像差,使得畸变更小,相对照度更高;而且在提升解像力的同时,具有更小尺寸,能够适用于不同的工作环境。
本发明的附加方面和优点将在下面的描述中部分给出,部分将从下面的描述中变得明显,或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解,其中:
图1是实施例1的摄像镜头的结构示意图;
图2是实施例1的摄像镜头的轴上色差图(mm);图3是实施例1的摄像镜头的象散图(mm);图4是实施例1的摄像镜头的畸变图(%);图5是实施例1的摄像镜头的倍率色差图(μm);
图6是实施例2的摄像镜头的结构示意图;
图7是实施例2的摄像镜头的轴上色差图(mm);图8是实施例2的摄像镜头的象散图(mm);图9是实施例2的摄像镜头的畸变图(%);图10是实施例2的摄像镜头的倍率色差图(μm);
图11是实施例3的摄像镜头的结构示意图;
图12是实施例3的摄像镜头的轴上色差图(mm);图13是实施例3的摄像镜头的象散图(mm);图14是实施例3的摄像镜头的畸变图(%);图15是实施例3的摄像镜头的倍率色差图(μm);
图16是实施例4的摄像镜头的结构示意图;
图17是实施例4的摄像镜头的轴上色差图(mm);图18是实施例4的摄像镜头的象散图(mm);图19是实施例4的摄像镜头的畸变图(%);图20是实施例4的摄像镜头的倍率色差图(μm);
图21是实施例5的摄像镜头的结构示意图;
图22是实施例的5摄像镜头的轴上色差图(mm);图23是实施例5的摄像镜头的象散图(mm);图24是实施例5的摄像镜头的畸变图(%);图25是实施例5的摄像镜头的倍率色差图(μm);
图26是实施例6的摄像镜头的结构示意图;
图27是实施例6的摄像镜头的轴上色差图(mm);图28是实施例6的摄像镜头的象散图(mm);图29是实施例6的摄像镜头的畸变图(%);图30是实施例6的摄像镜头的倍率色差图(μm);
图31是实施例7的摄像镜头的结构示意图;
图32是实施例7的摄像镜头的轴上色差图(mm);图33是实施例7的摄像镜头的象散图(mm);图34是实施例7的摄像镜头的畸变图(%);图35是实施例7的摄像镜头的倍率色差图(μm);
图36是实施例8的摄像镜头的结构示意图;
图37是实施例8的摄像镜头的轴上色差图(mm);图38是实施例8的摄像镜头的象散图(mm);图39是实施例8的摄像镜头的畸变图(%);图40是实施例8的摄像镜头的倍率色差图(μm)。
具体实施方式
下面详细描述本发明的实施方式,所述实施方式的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施方式是示例性的,仅用于解释本发明,而不能理解为对本发明的限制。
在本发明的描述中,需要理解的是,术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。此外,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本发明的描述中,“多个”的含义是两个或两个以上,除非另有明确具体的限定。
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接或可以相互通讯;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领 域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明中,除非另有明确的规定和限定,第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触,也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且,第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方,或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方,或仅仅表示第一特征水平高度小于第二特征。
下文的公开提供了许多不同的实施方式或例子用来实现本发明的不同结构。为了简化本发明的公开,下文中对特定例子的部件和设置进行描述。当然,它们仅仅为示例,并且目的不在于限制本发明。此外,本发明可以在不同例子中重复参考数字和/或参考字母,这种重复是为了简化和清楚的目的,其本身不指示所讨论各种实施方式和/或设置之间的关系。此外,本发明提供了的各种特定的工艺和材料的例子,但是本领域普通技术人员可以意识到其他工艺的应用和/或其他材料的使用。
请参阅图1,本发明实施方式的摄像镜头从物侧到像侧依次包括具有负光焦度的第一透镜L1、具有光焦度的第二透镜L2、具有正光焦度的第三透镜L3、具有光焦度的第四透镜L4、具有光焦度的第五透镜L5、具有光焦度的第六透镜L6及具有光焦度的第七透镜L7。
第一透镜L1具有物侧面S1及像侧面S2。第二透镜L2具有物侧面S3及像侧面S4。第三透镜L3具有物侧面S5及像侧面S6,且像侧面S6为凹面。第四透镜L4具有物侧面S7及像侧面S8。第五透镜L5具有物侧面S9及像侧面S10。第六透镜L6具有物侧面S11及像侧面S12。第七透镜E7具有物侧面S13及像侧面S14,且物侧面S13和像侧面S14均为非球面。
在某些实施方式中,摄像镜头还包括设置在第三透镜L3及第四透镜L4之间的光阑STO。
成像时,被摄物体OBJ发出或者反射的光线从第一透镜L1进入摄像镜头并穿过具有物侧面S15及像侧面S16的滤光片L8,最终成像于成像面S17。
在某些实施方式中,摄像镜头满足条件式:
-2<f1/f<-1.4;
其中,f1为第一透镜L1的有效焦距,f为摄像镜头的有效焦距。
满足上面的条件式,使得第一透镜L1的光焦度得到合理分配,使得摄像镜头可以有效校正各种像差。
在某些实施方式中,第三透镜L3的物侧面S5为凸面。
满足上面的条件有利于保证第三透镜L3的正光焦度,使得摄像镜头具有较强的收 缩光线的能力,从而扩大摄像镜头的视场角。
在某些实施方式中,第四透镜L4具有正光焦度,其物侧面S7为凸面,像侧面S8为凸面。
第四透镜L4承担着摄像镜头的主要光焦度,满足上面的条件能够中和前三片透镜产生的负向像差,并且在光阑STO后面口径比较小,最大限度控制了高级像差的引入。
在某些实施方式中,摄像镜头满足条件式:
0.5<R5/R7<1;
其中,R5为第三透镜L3的物侧面S5的曲率半径;R7为第四透镜L4的物侧面S7的曲率半径。
满足上面的条件式能够较好的控制垂轴色差,避免色差方面高级像差的引入。
在某些实施方式中,第五透镜L5具有负光焦度,其物侧面S9为凸面,像侧面S10为凹面,摄像镜头满足条件式:
-4.1<f5/f<-3.5;
其中,f5为第五透镜L5的有效焦距,f为摄像镜头的有效焦距。
第五透镜L5的主要作用在于抵消前几片透镜所产生的累积球差与色差,而对第五透镜L5的外径范围限制有利于工程上实现简易安装。
在某些实施方式中,第六透镜L6具有正光焦度,其像侧面S12为凸面。
满足上面的条件能够使第六透镜L6起到场镜的作用,将光线收集在较小的范围,有利于实现摄像镜头的小型化。
在某些实施方式中,摄像镜头满足条件式:
1.7<ImgH/f<2;
其中,ImgH为成像面S17上有效像素区域对角线长的一半;f为摄像镜头的有效焦距。
在光学系统中,同样的像高下,焦距太长意味则较大的负畸变,太短则会有较差的工艺性,且不易保证边缘像面的亮度。满足上面的条件式同时兼顾了畸变,画质和可制造性。
在某些实施方式中,摄像镜头满足条件式:
0.18<ΣT/TTL<0.45;
其中,ΣT为第一透镜L1至第七透镜L7任意相邻两透镜之间轴上间隔距离的总和;TTL为第一透镜L1的物侧面S1至成像面S17的轴上距离。
在同样尺寸下,轴上间隔距离太长则会造成单镜片尺寸分布不均,同时不利于小型化;轴上间隔距离太短则不易保证组立性,轴外像差也不易于矫正,同时增加产生鬼像的风险。满足上面的条件式同时兼顾了工艺性和画质。
在某些实施方式中,摄像镜头满足条件式:
0.95<CT2/CT5<1.5;
其中,CT2为第二透镜L2在光轴上的中心厚度,CT5为第五透镜L5在光轴上的中心厚度。
第二透镜L2和第五透镜L5的厚度太大不利于单色像差的矫正,太小则不利于镜片制造和组装。满足上面的条件式可以更好的兼顾工艺性和性能的可行性。
在某些实施方式中,摄像镜头满足条件式:
0.18<(CT3+CT6)/TTL<0.5;
其中,CT3为第三透镜L3在光轴上的中心厚度,CT6为第六透镜L6在光轴上的中心厚度,TTL为第一透镜L1的物侧面S1至成像面S17的轴上距离。
该比值过大会影响摄像镜头整体的光焦度分配,过小会导致工艺性大大降低。该比值范围合理的分配了光焦度,并且有利于加工制造。
在某些实施方式中,摄像镜头满足条件式:
-1.6<SAG71/CT7<-1;
其中,SAG71为第七透镜L7的物侧面S13和光轴的交点至第一透镜L1的物侧面S1的有效半径顶点之间的轴上距离,CT7为第七透镜L7在光轴上的中心厚度。
该比值范围有效的解决了镜头的场曲,减小畸变像差,在保证产品的工艺性的同时,增大镜头的口径,有利于镜头的微型化。
在某些实施方式中,摄像镜头满足条件式:
0.9<DT11/DT72<1.2;
其中,DT11为第一透镜L1的物侧面S1的有效半径;DT72为第七透镜L7的像侧面S14的有效半径。
满足上面的条件式能够有效的控制各个视场的光束宽度,从而提高相对照度值;同时有效的平衡了镜头尺寸和工艺性。
在某些实施方式中,摄像镜头满足条件式:
0.8<DT21/DT52<1.1;
其中,DT21为第二透镜L2的物侧面S3的有效半径;DT52为第五透镜L5的像侧面S10的有效半径。
满足上面的条件式通过第二透镜L5和第五透镜L5的有效半径的配合,有利于矫正摄像镜头的色差和单色像差,从而实现各种像差的平衡。
在某些实施方式中,第一透镜L1、第二透镜L2、第三透镜L3、第四透镜L4、第五透镜L5、第六透镜L6及第七透镜L7都为非球面透镜。非球面的面型由以下公式决定:
Figure PCTCN2016099626-appb-000001
其中,h是非球面上任一点到光轴的高度,c是顶点曲率,k是锥形常数,Ai是非球面第i-th阶的修正系数。
实施例1
请参阅图1-5,实施例1中,摄像镜头满足下面表格的条件:
表1
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -230.1942 0.3300 1.54/55.8 -16.8242
S2 非球面 1.1572 0.7183   -6.4494
S3 非球面 -30.0371 0.2300 1.64/23.5 50.0000
S4 非球面 12.7040 0.0300   11.5796
S5 非球面 1.8484 0.3097 1.64/23.5 -2.0325
S6 非球面 4.9847 0.1000   49.9369
STO 球面 无穷 0.1000    
S7 非球面 2.1991 0.4675 1.54/55.8 4.1066
S8 非球面 -1.7691 0.0504   4.9349
S9 非球面 4.3640 0.2300 1.64/23.5 10.0064
S10 非球面 1.8071 0.1023   -7.4262
S11 非球面 103.5386 0.8843 1.54/55.8 47.1001
S12 非球面 -0.6566 0.0768   -3.5639
S13 非球面 4.7287 0.3595 1.64/23.5 -36.6676
S14 非球面 0.7936 0.3677   -7.2251
S15 球面 无穷 0.1100 1.52/64.2  
S16 球面 无穷 0.5336    
S17 球面 无穷      
表2
面号 A4 A6 A8 A10 A12 A14 A16
S1 3.0281E-01 -2.9641E-01 2.1600E-01 -1.1009E-01 3.4869E-02 -6.0661E-03 4.4571E-04
S2 9.3727E-01 -7.6242E-01 1.6951E+00 -4.9541E+00 1.0395E+01 -1.1240E+01 4.4076E+00
S3 9.6906E-02 2.0004E-01 -7.8401E-01 4.7061E-01 0.0000E+00 0.0000E+00 0.0000E+00
S4 4.4197E-01 -1.1938E-01 -2.4082E-01 -1.3122E+00 1.2709E+00 0.0000E+00 0.0000E+00
S5 2.6344E-01 -2.6851E-01 6.9731E-02 -7.5185E-03 2.9315E-04 0.0000E+00 0.0000E+00
S6 -7.2952E-02 -1.1428E-01 1.0189E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 3.5311E-02 -5.1758E-02 -5.9313E-01 2.0333E+00 -3.9247E+00 0.0000E+00 0.0000E+00
S8 -7.1914E-01 3.4819E+00 -1.2144E+01 2.1309E+01 -1.3775E+01 0.0000E+00 0.0000E+00
S9 -1.3771E+00 3.5312E+00 -1.4090E+01 4.1010E+01 -1.0826E+02 1.8181E+02 -1.1946E+02
S10 -4.4378E-01 7.3130E-01 -2.7694E-01 -1.9477E+00 4.2923E+00 -3.5213E+00 1.0825E+00
S11 4.2441E-02 -3.5820E-01 1.7511E+00 -3.7205E+00 4.0723E+00 -2.2867E+00 5.3185E-01
S12 -1.4631E-01 -6.6189E-01 2.4102E+00 -4.2984E+00 4.2127E+00 -2.0489E+00 3.9367E-01
S13 -2.5667E-01 -3.5946E-01 8.3561E-01 -1.0269E+00 6.3925E-01 -1.6282E-01 1.0078E-02
S14 -1.8185E-01 7.9547E-02 -1.9533E-02 -6.2938E-03 5.5078E-03 -1.3305E-03 1.0632E-04
表3
f1(mm) -2.14 f(mm) 1.32
f2(mm) -13.82 Fno 2.43
f3(mm) 4.39 HFOV(°) 71.92
f4(mm) 1.9    
f5(mm) -4.96    
f6(mm) 1.22    
f7(mm) -1.53    
实施例2
请参阅图6-10,实施例2中,摄像镜头满足下面表格的条件:
表4
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 389.6303 0.3306 1.54/55.8 -16.8242
S2 非球面 1.1288 0.7072   -6.4494
S3 非球面 -27.7441 0.2328 1.64/23.5 50.0000
S4 非球面 17.9251 0.0457   11.5796
S5 非球面 1.9212 0.2557 1.64/23.5 -1.8562
S6 非球面 4.6246 0.1003   49.9369
STO 球面 无穷 0.1066    
S7 非球面 2.1026 0.4979 1.54/55.8 3.9751
S8 非球面 -1.7827 0.0500   4.9225
S9 非球面 4.3178 0.2300 1.64/23.5 10.0064
S10 非球面 1.8464 0.1003   -7.3259
S11 非球面 62.3174 0.8934 1.54/55.8 47.1001
S12 非球面 -0.6289 0.1003   -3.4836
S13 非球面 -1000.0000 0.3673 1.64/23.5 -36.6676
S14 非球面 0.9014 0.3530   -8.1161
S15 球面 无穷 0.1100 1.52/64.2  
S16 球面 无穷 0.5190    
S17 球面 无穷      
表5
面号 A4 A6 A8 A10 A12 A14 A16
S1 3.3762E-01 -3.5776E-01 2.6971E-01 -1.3869E-01 4.4254E-02 -7.7980E-03 5.8280E-04
S2 9.8170E-01 -5.2274E-01 2.3897E-01 -1.7315E+00 6.8250E+00 -9.2319E+00 3.9323E+00
S3 1.0225E-01 1.6458E-01 -7.0430E-01 4.2280E-01 0.0000E+00 0.0000E+00 0.0000E+00
S4 4.5058E-01 -1.6172E-01 -2.4894E-01 -1.2230E+00 1.2206E+00 0.0000E+00 0.0000E+00
S5 2.8058E-01 -2.7489E-01 7.0957E-02 -7.6324E-03 2.9720E-04 0.0000E+00 0.0000E+00
S6 -5.9466E-02 -9.3517E-02 7.8861E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 2.9415E-02 -2.9167E-02 -7.9405E-01 2.8017E+00 -4.8794E+00 0.0000E+00 0.0000E+00
S8 -8.1203E-01 3.9535E+00 -1.3471E+01 2.3567E+01 -1.5354E+01 0.0000E+00 0.0000E+00
S9 -1.4234E+00 3.6259E+00 -1.4079E+01 4.1482E+01 -1.1187E+02 1.8940E+02 -1.2464E+02
S10 -4.3546E-01 6.9112E-01 -2.4385E-01 -1.6944E+00 3.3900E+00 -2.4109E+00 6.1554E-01
S11 9.7085E-03 -1.3724E-01 1.0545E+00 -2.5059E+00 2.8051E+00 -1.5441E+00 3.4228E-01
S12 -1.5120E-01 -6.9086E-01 2.6398E+00 -4.7406E+00 4.5782E+00 -2.1854E+00 4.1216E-01
S13 -8.7103E-02 -9.0866E-01 1.9451E+00 -2.3075E+00 1.4546E+00 -4.2796E-01 4.4493E-02
S14 -1.7670E-01 8.1199E-02 -2.0694E-02 -6.4398E-03 5.7427E-03 -1.3825E-03 1.0977E-04
表6
f1(mm) -2.11 f(mm) 1.32
f2(mm) -16.86 Fno 2.53
f3(mm) 4.92 HFOV(°) 74.41
f4(mm) 1.88    
f5(mm) -5.19    
f6(mm) 1.17    
f7(mm) -1.4    
实施例3
请参阅图11-15,实施例3中,摄像镜头满足下面表格的条件:
表7
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -230.1942 0.3300 1.54/55.8 -16.8242
S2 非球面 1.1572 0.7183   -6.4494
S3 非球面 -30.0371 0.2300 1.64/23.5 50.0000
S4 非球面 12.7040 0.0300   11.5796
S5 非球面 1.8484 0.3097 1.64/23.5 -2.0325
S6 非球面 4.9847 0.1000   49.9369
STO 球面 无穷 0.1000    
S7 非球面 2.1991 0.4675 1.54/55.8 4.1066
S8 非球面 -1.7691 0.0504   4.9349
S9 非球面 4.3640 0.2300 1.64/23.5 10.0064
S10 非球面 1.8071 0.1023   -7.4262
S11 非球面 -1000.0000 0.8843 1.54/55.8 47.1001
S12 非球面 -0.6566 0.0768   -3.5639
S13 非球面 4.7287 0.3595 1.64/23.5 -36.6676
S14 非球面 0.7936 0.3677   -7.2251
S15 球面 无穷 0.1100 1.52/64.2  
S16 球面 无穷 0.5336    
S17 球面 无穷      
表8
面号 A4 A6 A8 A10 A12 A14 A16
S1 3.0281E-01 -2.9641E-01 2.1600E-01 -1.1009E-01 3.4869E-02 -6.0661E-03 4.4571E-04
S2 9.3727E-01 -7.6242E-01 1.6951E+00 -4.9541E+00 1.0395E+01 -1.1240E+01 4.4076E+00
S3 9.6906E-02 2.0004E-01 -7.8401E-01 4.7061E-01 0.0000E+00 0.0000E+00 0.0000E+00
S4 4.4197E-01 -1.1938E-01 -2.4082E-01 -1.3122E+00 1.2709E+00 0.0000E+00 0.0000E+00
S5 2.6344E-01 -2.6851E-01 6.9731E-02 -7.5185E-03 2.9315E-04 0.0000E+00 0.0000E+00
S6 -7.2952E-02 -1.1428E-01 1.0189E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 3.5311E-02 -5.1758E-02 -5.9313E-01 2.0333E+00 -3.9247E+00 0.0000E+00 0.0000E+00
S8 -7.1914E-01 3.4819E+00 -1.2144E+01 2.1309E+01 -1.3775E+01 0.0000E+00 0.0000E+00
S9 -1.3771E+00 3.5312E+00 -1.4090E+01 4.1010E+01 -1.0826E+02 1.8181E+02 -1.1946E+02
S10 -4.4378E-01 7.3130E-01 -2.7694E-01 -1.9477E+00 4.2923E+00 -3.5213E+00 1.0825E+00
S11 4.2441E-02 -3.5820E-01 1.7511E+00 -3.7205E+00 4.0723E+00 -2.2867E+00 5.3185E-01
S12 -1.4631E-01 -6.6189E-01 2.4102E+00 -4.2984E+00 4.2127E+00 -2.0489E+00 3.9367E-01
S13 -2.5667E-01 -3.5946E-01 8.3561E-01 -1.0269E+00 6.3925E-01 -1.6282E-01 1.0078E-02
S14 -1.8185E-01 7.9547E-02 -1.9533E-02 -6.2938E-03 5.5078E-03 -1.3305E-03 1.0632E-04
表9
f1(mm) -2.14 f(mm) 1.34
f2(mm) -13.82 Fno 2.53
f3(mm) 4.39 HFOV(°) 73.99
f4(mm) 1.9    
f5(mm) -4.96    
f6(mm) 1.22    
f7(mm) -1.53    
实施例4
请参阅图16-20,实施例4中,摄像镜头满足下面表格的条件:
表10
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -1000.0000 0.3340 1.54/55.8 -16.8242
S2 非球面 1.1653 0.7168   -6.1094
S3 非球面 -25.3674 0.2413 1.64/23.5 50.0000
S4 非球面 12.0471 0.0522   11.5796
S5 非球面 1.8361 0.2553 1.64/23.5 -1.9910
S6 非球面 4.9022 0.1033   49.9369
STO 球面 无穷 0.1050    
S7 非球面 2.1375 0.4810 1.54/55.8 4.0277
S8 非球面 -1.7748 0.0500   4.9006
S9 非球面 4.3403 0.2300 1.64/23.5 10.0064
S10 非球面 1.8428 0.1053   -7.3029
S11 非球面 -1000.0000 0.8861 1.54/55.8 47.1001
S12 非球面 -0.6243 0.0926   -3.4404
S13 非球面 -1000.0000 0.3656 1.64/23.5 -36.6676
S14 非球面 0.9090 0.3528   -8.1161
S15 球面 无穷 0.1100 1.52/64.2  
S16 球面 无穷 0.5188    
S17 球面 无穷      
表11
面号 A4 A6 A8 A10 A12 A14 A16
S1 3.1494E-01 -2.6773E-01 1.2736E-01 -2.3456E-02 -5.8805E-03 3.3138E-03 -4.0168E-04
S2 8.7315E-01 -1.5558E-01 -1.2306E+00 2.3953E+00 -2.6178E-01 -3.0303E+00 1.8493E+00
S3 1.1232E-01 1.2780E-01 -6.7290E-01 4.2105E-01 0.0000E+00 0.0000E+00 0.0000E+00
S4 4.5947E-01 -1.6317E-01 -2.0057E-01 -1.3372E+00 1.2831E+00 0.0000E+00 0.0000E+00
S5 2.6965E-01 -2.7156E-01 7.0397E-02 -7.5851E-03 2.9564E-04 0.0000E+00 0.0000E+00
S6 -6.0546E-02 -1.1539E-01 9.6948E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 2.7800E-02 -4.6716E-03 -8.3865E-01 2.7444E+00 -4.6538E+00 0.0000E+00 0.0000E+00
S8 -8.1827E-01 4.0044E+00 -1.3618E+01 2.3661E+01 -1.5271E+01 0.0000E+00 0.0000E+00
S9 -1.4386E+00 3.5939E+00 -1.3753E+01 4.0523E+01 -1.1168E+02 1.9244E+02 -1.2785E+02
S10 -4.3314E-01 6.7145E-01 -1.6762E-01 -1.9835E+00 4.0737E+00 -3.1486E+00 9.0117E-01
S11 -8.4985E-04 6.0729E-02 2.1042E-01 -7.4849E-01 7.9237E-01 -3.2341E-01 3.5859E-02
S12 -1.4823E-01 -6.7279E-01 2.5774E+00 -4.6016E+00 4.3977E+00 -2.0737E+00 3.8678E-01
S13 -7.5742E-02 -9.5074E-01 2.0497E+00 -2.5031E+00 1.6479E+00 -5.1582E-01 5.9155E-02
S14 -1.7703E-01 8.1915E-02 -2.4350E-02 -3.8331E-03 4.9442E-03 -1.2700E-03 1.0384E-04
表12
f1(mm) -2.17 f(mm) 1.32
f2(mm) -12.64 Fno 2.53
f3(mm) 4.41 HFOV(°) 74.58
f4(mm) 1.89    
f5(mm) -5.15    
f6(mm) 1.16    
f7(mm) -1.41    
实施例5
请参阅图21-25,实施例5中,摄像镜头满足下面表格的条件:
表13
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 18.8800 0.3300 1.54/55.8 -16.8242
S2 非球面 1.0460 0.7205   -5.3117
S3 非球面 129.8261 0.2200 1.64/23.5 50.0000
S4 非球面 3.7463 0.0300   11.5797
S5 非球面 1.5197 0.2200 1.64/23.5 0.0663
S6 非球面 4.7604 0.1000   49.9370
STO 球面 无穷 0.1000    
S7 非球面 2.5187 0.4530 1.54/55.8 5.6101
S8 非球面 -1.6917 0.0687   4.5224
S9 非球面 4.3052 0.2200 1.64/23.5 10.0064
S10 非球面 1.7471 0.0803   -11.3748
S11 非球面 8.6476 0.9449 1.54/55.8 47.1001
S12 非球面 -0.7201 0.0200   -3.0320
S13 非球面 2.2965 0.3489 1.64/23.5 -36.6676
S14 非球面 0.7422 0.4339   -5.7344
S15 球面 无穷 0.1100 1.52/64.2  
S16 球面 无穷 0.5998    
S17 球面 无穷      
表14
面号 A4 A6 A8 A10 A12 A14 A16
S1 3.4414E-01 -3.7913E-01 3.0917E-01 -1.7498E-01 6.1534E-02 -1.1922E-02 9.7823E-04
S2 1.0910E+00 -9.3967E-01 2.4371E+00 -8.2943E+00 1.9725E+01 -2.3954E+01 1.0521E+01
S3 7.5744E-02 -1.6187E-01 -1.7908E-01 2.6287E-01 0.0000E+00 0.0000E+00 0.0000E+00
S4 -2.1746E-11 1.5360E-14 -3.5752E-18 3.2767E-22 -9.9470E-27 0.0000E+00 0.0000E+00
S5 -1.6319E-01 5.0097E-02 -7.7523E-03 5.8573E-04 -1.7245E-05 0.0000E+00 0.0000E+00
S6 -1.6774E-02 -3.3506E-01 9.8211E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 9.3380E-02 -1.8578E-01 -1.6228E-01 1.5800E+00 -4.3610E+00 0.0000E+00 0.0000E+00
S8 -6.2227E-01 3.1525E+00 -1.2012E+01 2.3580E+01 -1.7660E+01 0.0000E+00 0.0000E+00
S9 -1.3893E+00 3.8601E+00 -1.6212E+01 4.5565E+01 -1.0739E+02 1.6350E+02 -1.0171E+02
S10 -4.8081E-01 9.6420E-01 -9.9956E-01 -1.0458E+00 3.9569E+00 -3.7457E+00 1.2384E+00
S11 1.3978E-02 -7.1223E-01 3.5463E+00 -8.2179E+00 1.0213E+01 -6.6095E+00 1.7555E+00
S12 -1.9048E-01 -2.3070E-01 7.6554E-01 -1.2449E+00 1.2493E+00 -6.3262E-01 1.3816E-01
S13 -3.8531E-01 1.4563E-02 -3.0938E-01 9.6819E-01 -1.1462E+00 6.0997E-01 -1.1685E-01
S14 -2.5452E-01 1.3997E-01 -3.8017E-02 -7.7925E-03 8.3604E-03 -2.1311E-03 1.7976E-04
表15
f1(mm) -2.08 f(mm) 1.32
f2(mm) -5.99 Fno 2.52
f3(mm) 3.37 HFOV(°) 74.39
f4(mm) 1.96    
f5(mm) -4.72    
f6(mm) 1.28    
f7(mm) -1.87    
实施例6
请参阅图26-30,实施例6中,摄像镜头满足下面表格的条件:
表16
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -22.2689 0.3300 1.54/55.8 -16.8242
S2 非球面 1.1652 0.6839   -7.2141
S3 非球面 14.3340 0.2200 1.64/23.5 50.0000
S4 非球面 4.0971 0.0300   11.5797
S5 球面 1.7332 0.2200 1.64/23.5  
S6 非球面 4.6031 0.1000   49.9370
STO 球面 无穷 0.1000    
S7 非球面 2.9426 0.4424 1.54/55.8 1.4563
S8 非球面 -1.5691 0.0858   4.4304
S9 非球面 4.2455 0.2200 1.64/23.5 10.0064
S10 非球面 1.8262 0.0754   -12.3970
S11 非球面 10.5230 0.9474 1.54/55.8 47.1001
S12 非球面 -0.7189 0.0200   -2.9781
S13 非球面 2.2743 0.3600 1.64/23.5 -36.6676
S14 非球面 0.7212 0.4446   -5.6355
S15 球面 无穷 0.1100 1.52/64.2  
S16 球面 无穷 0.6106    
S17 球面 无穷      
表17
面号 A4 A6 A8 A10 A12 A14 A16
S1 2.9466E-01 -2.8573E-01 2.0546E-01 -1.0380E-01 3.3533E-02 -6.1040E-03 4.7564E-04
S2 9.4305E-01 -8.2427E-01 1.6787E+00 -4.5368E+00 9.0842E+00 -1.0081E+01 4.1535E+00
S3 -4.8073E-02 -2.0956E-02 -2.3926E-01 2.7554E-01 0.0000E+00 0.0000E+00 0.0000E+00
S4 -2.1701E-11 1.5314E-14 -3.5593E-18 3.2541E-22 -9.8328E-27 0.0000E+00 0.0000E+00
S6 7.3697E-02 -1.9064E-01 1.2111E+00 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 1.0817E-01 -3.2731E-01 4.8568E-01 2.4053E-01 -6.9816E+00 0.0000E+00 0.0000E+00
S8 -6.2272E-01 2.3998E+00 -7.9309E+00 1.6042E+01 -1.3552E+01 0.0000E+00 0.0000E+00
S9 -1.3236E+00 2.5931E+00 -9.9267E+00 2.9166E+01 -6.5976E+01 8.8365E+01 -4.9064E+01
S10 -3.0099E-01 1.0397E-01 6.4474E-01 -1.4502E+00 1.1649E+00 -8.7303E-02 -2.3449E-01
S11 1.9483E-01 -7.9472E-01 1.8095E+00 -2.5392E+00 2.1552E+00 -1.0267E+00 2.1160E-01
S12 -9.1659E-02 -5.3424E-01 1.4031E+00 -2.1846E+00 2.1229E+00 -1.0965E+00 2.4559E-01
S13 -2.8997E-01 -2.4560E-01 2.8902E-01 -2.4174E-01 2.0420E-01 -8.6132E-02 1.4382E-02
S14 -2.1371E-01 7.8682E-02 1.2944E-03 -2.1000E-02 1.1231E-02 -2.5537E-03 2.1034E-04
表18
f1(mm) -2.05 f(mm) 1.34
f2(mm) -8.98 Fno 2.51
f3(mm) 4.19 HFOV(°) 74.14
f4(mm) 1.97    
f5(mm) -5.16    
f6(mm) 1.28    
f7(mm) -1.8    
实施例7
请参阅图31-35,实施例7中,摄像镜头满足下面表格的条件:
表19
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 909.6832 0.3318 1.54/55.8 -16.8242
S2 非球面 1.1305 0.7376   -6.4493
S3 非球面 -27.2966 0.2314 1.64/23.5 50.0000
S4 非球面 7.9398 0.0502   11.5796
S5 非球面 1.7255 0.3151 1.64/23.5 -2.1845
S6 非球面 5.2891 0.1004   49.9370
STO 球面 无穷 0.1000    
S7 非球面 2.1207 0.4726 1.55/65.0 3.8091
S8 非球面 -1.8302 0.0720   4.8407
S9 非球面 4.0156 0.2312 1.64/23.5 10.0064
S10 非球面 1.7998 0.1115   -8.0429
S11 非球面 -40.4585 0.8560 1.54/55.8 47.1001
S12 非球面 -0.6427 0.0684   -3.6259
S13 非球面 5.6011 0.3451 1.64/23.5 -36.6676
S14 非球面 0.7937 0.3688   -7.7206
S15 球面 无穷 0.1100 1.52/64.2  
S16 球面 无穷 0.5348    
S17 球面 无穷      
表20
面号 A4 A6 A8 A10 A12 A14 A16
S1 2.7612E-01 -2.6105E-01 1.8045E-01 -8.6268E-02 2.5689E-02 -4.2180E-03 2.9328E-04
S2 8.9794E-01 -6.0108E-01 7.1519E-01 -1.7970E+00 4.4380E+00 -5.1213E+00 1.9350E+00
S3 1.2623E-01 1.1428E-01 -6.6815E-01 4.0534E-01 0.0000E+00 0.0000E+00 0.0000E+00
S4 4.6140E-01 -1.4236E-01 -3.4656E-01 -1.0556E+00 1.1329E+00 0.0000E+00 0.0000E+00
S5 2.5874E-01 -2.7656E-01 7.2257E-02 -7.8005E-03 3.0402E-04 0.0000E+00 0.0000E+00
S6 -6.8323E-02 -1.0705E-01 9.0221E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 2.5754E-02 -1.2829E-01 -1.3953E-02 2.2177E-01 -1.3423E+00 0.0000E+00 0.0000E+00
S8 -5.6640E-01 2.5729E+00 -8.9791E+00 1.5619E+01 -9.8984E+00 0.0000E+00 0.0000E+00
S9 -1.2976E+00 2.8756E+00 -1.1411E+01 3.5617E+01 -1.0105E+02 1.7262E+02 -1.1287E+02
S10 -4.6113E-01 6.7963E-01 -1.2929E-01 -1.9865E+00 3.9768E+00 -2.9003E+00 7.2731E-01
S11 6.0369E-02 -4.2236E-01 1.7012E+00 -3.3753E+00 3.5981E+00 -1.9797E+00 4.4948E-01
S12 -7.1947E-02 -8.7144E-01 2.8044E+00 -4.6689E+00 4.3533E+00 -2.0598E+00 3.9043E-01
S13 -2.3492E-01 -4.6759E-01 1.0536E+00 -1.2269E+00 7.0061E-01 -1.5140E-01 3.3569E-03
S14 -1.9948E-01 1.0381E-01 -3.8431E-02 1.7280E-03 3.6666E-03 -1.1505E-03 1.0283E-04
表21
f1(mm) -2.11 f(mm) 1.31
f2(mm) -9.52 Fno 2.53
f3(mm) 3.84 HFOV(°) 74.58
f4(mm) 1.87    
f5(mm) -5.28    
f6(mm) 1.21    
f7(mm) -1.48    
实施例8
请参阅图36-40,实施例8中,摄像镜头满足下面表格的条件:
表22
面号 表面类型 曲率半径 厚度 材料 圆锥系数
OBJ 球面 无穷 无穷    
S1 非球面 -530.0698 0.3300 1.54/55.8 -16.8242
S2 非球面 0.9153 0.7268   -5.0003
S3 非球面 72.5446 0.2300 1.64/23.5 50.0000
S4 非球面 -17.9333 0.0300   11.5796
S5 非球面 2.1262 0.3238 1.64/23.5 -0.8829
S6 非球面 4.5619 0.1204   49.9369
STO 球面 无穷 0.1028    
S7 非球面 2.0142 0.4961 1.54/55.8 4.3360
S8 非球面 -1.7535 0.0579   4.7857
S9 非球面 4.9986 0.2318 1.64/23.5 10.0064
S10 非球面 1.7053 0.0782   -7.3951
S11 非球面 23.2928 0.7752 1.54/55.8 47.1001
S12 非球面 -1.2797 0.1393   -3.3290
S13 非球面 300.0000 0.6523 1.64/23.5 -36.6676
S14 非球面 -100.0000 0.3647   -7.4306
S15 球面 无穷 0.1100 1.52/64.2  
S16 球面 无穷 0.4969    
S17 球面 无穷      
表23
面号 A4 A6 A8 A10 A12 A14 A16
S1 2.4610E-01 -2.1079E-01 1.2486E-01 -5.3317E-02 1.4903E-02 -2.3716E-03 1.6159E-04
S2 1.2894E+00 -2.7253E+00 1.2849E+01 -3.8219E+01 6.6733E+01 -6.0633E+01 2.1402E+01
S3 6.2118E-02 3.2826E-01 -8.5704E-01 4.1386E-01 0.0000E+00 0.0000E+00 0.0000E+00
S4 4.6418E-01 -1.9775E-01 -1.1439E-01 -1.3043E+00 1.2095E+00 0.0000E+00 0.0000E+00
S5 3.7695E-01 -3.1480E-01 7.8940E-02 -8.3831E-03 3.2394E-04 0.0000E+00 0.0000E+00
S6 -5.8312E-02 -4.3146E-02 8.0780E-01 0.0000E+00 0.0000E+00 0.0000E+00 0.0000E+00
S7 2.2236E-02 1.3902E-02 -3.0844E-01 4.4140E-01 -1.7609E+00 0.0000E+00 0.0000E+00
S8 -7.8305E-01 2.5948E+00 -6.2621E+00 9.7836E+00 -6.2112E+00 0.0000E+00 0.0000E+00
S9 -1.5084E+00 2.5354E+00 -1.0892E+01 4.0815E+01 -1.2301E+02 2.1351E+02 -1.4274E+02
S10 -4.6796E-01 5.1615E-01 9.1869E-01 -4.0432E+00 4.9633E+00 -1.8316E+00 -1.5108E-01
S11 -2.5609E-02 -3.4032E-01 3.3532E+00 -9.4874E+00 1.2589E+01 -8.1315E+00 2.0773E+00
S12 3.0546E-02 -1.2195E+00 2.6317E+00 -3.3738E+00 2.9075E+00 -1.3898E+00 2.7407E-01
S13 1.3560E-01 -8.6793E-01 9.7412E-01 -7.1903E-01 3.3869E-01 -6.9600E-02 2.1491E-03
S14 1.4940E-01 -3.0505E-01 2.3371E-01 -1.0751E-01 3.0096E-02 -4.7066E-03 3.0626E-04
表24
f1(mm) -1.70 f(mm) 1.19
f2(mm) 22.33 Fno 2.40
f3(mm) 5.87 HFOV(°) 73.86
f4(mm) 1.83    
f5(mm) -4.13    
f6(mm) 2.28    
f7(mm) 116.43    
在实施例1-8中,各条件式满足下面表格的条件:
关系式/实施例 1 2 3 4 5 6 7 8
f1/f -1.62 -1.60 -1.60 -1.65 -1.58 -1.53 -1.60 -1.43
f5/f -3.75 -3.93 -3.71 -3.91 -3.59 -3.84 -4.01 -3.46
ImgH/f 1.78 1.84 1.81 1.84 1.84 1.80 1.84 1.97
ΣT/TTL 0.24 0.24 0.20 0.25 0.22 0.22 0.25 0.37
CT2/CT5 1.00 1.01 1.00 1.45 1.50 1.50 1.44 0.99
(CT3+CT6)/TTL 0.24 0.23 0.24 0.23 0.23 0.23 0.23 0.21
R5/R7 0.84 0.91 0.84 0.86 0.60 0.59 0.81 1.06
SAG71/CT7 -1.33 -1.33 -1.33 -1.34 -1.28 -1.36 -1.56 -0.64
DT11/DT72 1.00 1.07 1.05 1.06 1.06 1.03 1.01 1.00
DT21/DT52 0.96 0.93 0.92 0.93 0.86 1.03 0.95 0.97
本发明实施方式的摄像镜头中,由于第一透镜L1具有负光焦度,可有效增加摄像镜头的视场角,同时保证成像面S17边缘有足够的亮度,有利于摄像镜头的广角化。而如上述表格及图1-40所示,满足上面的各个条件式,而满足上面的条件式,使得摄像镜头能有效矫正各种高阶像差,使得畸变更小,相对照度更高;而且在提升解像力的同时,具有更小尺寸,能够适用于不同的工作环境。
在本说明书的描述中,参考术语“一个实施方式”、“一些实施方式”、“示意性实施方 式”、“示例”、“具体示例”或“一些示例”等的描述意指结合所述实施方式或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施方式或示例中。在本说明书中,对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且,描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
尽管已经示出和描述了本发明的实施方式,本领域的普通技术人员可以理解:在不脱离本发明的原理和宗旨的情况下可以对这些实施方式进行多种变化、修改、替换和变型,本发明的范围由权利要求及其等同物限定。

Claims (13)

  1. 一种摄像镜头,其特征在于,从物侧至像侧依次包括:
    具有负光焦度的第一透镜;
    具有光焦度的第二透镜;
    具有正光焦度的第三透镜,其像侧面为凹面;
    具有光焦度的第四透镜;
    具有光焦度的第五透镜;
    具有光焦度的第六透镜;及
    具有光焦度的第七透镜,其物侧面和像侧面均为非球面;
    所述摄像镜头满足条件式:-2<f1/f<-1.4;
    其中,f1为所述第一透镜的有效焦距,f为所述摄像镜头的有效焦距。
  2. 如权利要求1所述的摄像镜头,其特征在于,所述第三透镜的物侧面为凸面。
  3. 如权利要求1所述的摄像镜头,其特征在于,所述第四透镜具有正光焦度,其物侧面为凸面,像侧面为凸面。
  4. 如权利要求1所述的摄像镜头,其特征在于,所述摄像镜头满足条件式:0.5<R5/R7<1;
    其中,R5为所述第三透镜的物侧面的曲率半径;R7为所述第四透镜的物侧面的曲率半径。
  5. 如权利要求1所述的摄像镜头,其特征在于,所述第五透镜具有负光焦度,其物侧面为凸面,像侧面为凹面,所述摄像镜头满足条件式:-4.1<f5/f<-3.5;
    其中,f5为所述第五透镜的有效焦距,f为所述摄像镜头的有效焦距。
  6. 如权利要求1所述的摄像镜头,其特征在于,所述第六透镜具有正光焦度,其像侧面为凸面。
  7. 如权利要求1所述的摄像镜头,其特征在于,所述摄像镜头满足条件式:1.7<ImgH/f<2;
    其中,ImgH为成像面上有效像素区域对角线长的一半;f为所述摄像镜头的有效焦 距。
  8. 如权利要求1所述的摄像镜头,其特征在于,所述摄像镜头满足条件式:0.18<ΣT/TTL<0.45;
    其中,ΣT为所述第一透镜至所述第七透镜任意相邻两透镜之间轴上间隔距离的总和;TTL为所述第一透镜的物侧面至成像面的轴上距离。
  9. 如权利要求1所述的摄像镜头,其特征在于,所述摄像镜头满足条件式:0.95<CT2/CT5<1.5;
    其中,CT2为所述第二透镜在光轴上的中心厚度,CT5为所述第五透镜在光轴上的中心厚度。
  10. 如权利要求1所述的摄像镜头,其特征在于,所述摄像镜头满足条件式:0.18<(CT3+CT6)/TTL<0.5;
    其中,CT3为所述第三透镜在光轴上的中心厚度,CT6为所述第六透镜在光轴上的中心厚度,TTL为所述第一透镜的物侧面至成像面的轴上距离。
  11. 如权利要求1所述的摄像镜头,其特征在于,所述摄像镜头满足条件式:-1.6<SAG71/CT7<-1;
    其中,SAG71为所述第七透镜的物侧面和光轴的交点至所述第一透镜的物侧面的有效半径顶点之间的轴上距离,CT7为所述第七透镜在光轴上的中心厚度。
  12. 如权利要求1所述的摄像镜头,其特征在于,所述摄像镜头满足条件式:0.9<DT11/DT72<1.2;
    其中,DT11为所述第一透镜的物侧面的有效半径;DT72为所述第七透镜的像侧面的有效半径。
  13. 如权利要求1所述的摄像镜头,其特征在于,所述摄像镜头满足条件式:0.8<DT21/DT52<1.1;
    其中,DT21为所述第二透镜的物侧面的有效半径;DT52为所述第五透镜的像侧面的有效半径。
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