WO2020140595A1 - 摄像光学镜头 - Google Patents

摄像光学镜头 Download PDF

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Publication number
WO2020140595A1
WO2020140595A1 PCT/CN2019/114039 CN2019114039W WO2020140595A1 WO 2020140595 A1 WO2020140595 A1 WO 2020140595A1 CN 2019114039 W CN2019114039 W CN 2019114039W WO 2020140595 A1 WO2020140595 A1 WO 2020140595A1
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Prior art keywords
lens
imaging optical
optical lens
refractive power
focal length
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English (en)
French (fr)
Inventor
孙雯
寺冈弘之
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AAC Communication Technologies Changzhou Co Ltd
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AAC Communication Technologies Changzhou Co Ltd
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Publication of WO2020140595A1 publication Critical patent/WO2020140595A1/zh
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/06—Panoramic objectives; So-called "sky lenses" including panoramic objectives having reflecting surfaces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/60—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having five components only

Definitions

  • the present application relates to the technical field of optical lenses, and particularly to an imaging optical lens suitable for portable terminal devices such as smart phones and digital cameras, as well as imaging devices such as monitors and PC lenses.
  • the photosensitive device of general photographic lenses is nothing more than a photosensitive coupling device (Charge Coupled Device, CCD) or complementary metal oxide semiconductor device (Complementary Metal) -Oxide Semicondctor Sensor, CMOS Sensor), and due to the advancement of semiconductor manufacturing process technology, the pixel size of the photosensitive device has been reduced.
  • CCD Charge Coupled Device
  • CMOS Sensor complementary metal oxide semiconductor device
  • today's electronic products have a trend of good function, thin and short appearance, so they have good
  • the imaging quality of the miniaturized camera lens has become the mainstream on the market.
  • the lenses traditionally mounted on mobile phone cameras mostly use three-piece and four-piece lens structures.
  • the pixel area of the photosensitive device continues to shrink, and the system's imaging quality requirements continue to increase.
  • the five-piece lens structure gradually appears in the lens design. Common Although the five-piece lens has good optical performance, its power, lens spacing and lens shape settings still have certain irrationality, resulting in a lens structure that cannot meet the design of large aperture, ultra-thin and wide-angle Claim.
  • An imaging optical lens includes: an aperture, a first lens with positive refractive power, a second lens with negative refractive power, a third lens with negative refractive power, and a fourth lens with positive refractive power , A fifth lens with negative refractive power; the focal length of the imaging optical lens is f, the focal length is in millimeters (mm), the focal length of the first lens is f1, and the focal length of the fourth lens is f4, so
  • the curvature radius of the object side of the fifth lens is R9, and the curvature radius of the image side of the fifth lens is R10, which satisfies the following relationship: 1.00 ⁇ f1/f ⁇ 1.1; 0.40 ⁇ f4/f ⁇ 0.60; 11.00 ⁇ R9/ R10 ⁇ 12.00.
  • the embodiments of the present application use the above-mentioned lens arrangement methods to use lenses with different refractive powers, a first lens that has a specific matching relationship with the overall optical lens in focal length, and a focal length that is in contact with the overall optical lens
  • the fourth lens with a specific matching relationship and the fifth lens with a specific shape can reasonably allocate the refractive power of the first lens, the fourth lens and the fifth lens, which is beneficial to correct the aberration of the optical system and make the optical system have a good
  • it meets the design requirements of large aperture, ultra-thin and wide-angle.
  • the radius of curvature of the object side of the second lens is R3
  • the radius of curvature of the image side of the second lens is R4, which satisfies the following relationship: 1.55 ⁇ R3/R4 ⁇ 1.70.
  • FIG. 1 is a schematic structural diagram of a camera optical lens in the first embodiment of this application.
  • FIG. 2 is a schematic diagram of the axial aberration of the imaging optical lens shown in FIG. 1;
  • FIG. 3 is a schematic diagram of magnification chromatic aberration of the imaging optical lens shown in FIG. 1;
  • FIG. 4 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 1;
  • FIG. 5 is a schematic structural diagram of an imaging optical lens according to a second embodiment of this application.
  • FIG. 6 is a schematic diagram of the axial aberration of the imaging optical lens shown in FIG. 5;
  • FIG. 7 is a schematic diagram of magnification chromatic aberration of the imaging optical lens shown in FIG. 5;
  • FIG. 8 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 5;
  • FIG. 9 is a schematic structural diagram of an imaging optical lens according to a third embodiment of this application.
  • FIG. 10 is a schematic diagram of the axial aberration of the imaging optical lens shown in FIG. 9;
  • FIG. 11 is a schematic diagram of chromatic aberration of magnification of the imaging optical lens shown in FIG. 9;
  • FIG. 12 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 9;
  • FIG. 13 is a schematic structural diagram of an imaging optical lens according to a fourth embodiment of this application.
  • FIG. 14 is a schematic diagram of the axial aberration of the imaging optical lens shown in FIG. 13;
  • FIG. 15 is a schematic diagram of magnification chromatic aberration of the imaging optical lens shown in FIG. 13;
  • FIG. 16 is a schematic diagram of field curvature and distortion of the imaging optical lens shown in FIG. 13.
  • FIG. 1 shows an imaging optical lens 10 of the first embodiment of the present application.
  • the imaging optical lens 10 includes five lenses.
  • the imaging optical lens 10 includes an aperture S1, a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and a fifth lens L5 in order from the object side to the image side.
  • an optical element such as a glass flat plate GF is provided between the fifth lens L5 and the image plane Si.
  • the glass flat plate GF may be a glass cover or an optical filter. Of course, In other possible embodiments, the glass flat plate GF may also be arranged at other positions.
  • the first lens L1 has positive refractive power, which can effectively reduce the length of the system, its object side is convex outward, and its image side is concave;
  • the second lens L2 has negative refractive power, its object side is Convex surface, its image side is concave;
  • third lens L3 has negative refractive power, its object side is convex, and its image side is concave;
  • fourth lens L4 has positive refractive power, its object side is concave, and its image side is convex;
  • the fifth lens L5 has negative refractive power, its object side is convex, and its image side is concave.
  • the first lens, the second lens, the third lens, the fourth lens, and the fifth lens are made of plastic, which can effectively reduce production costs.
  • the surface of the lens can be set as an aspherical surface, and the aspherical surface can be easily made into a shape other than a spherical surface to obtain more control variables to reduce aberrations, thereby reducing the number of lenses used, so the imaging optics of the present application can be effectively reduced
  • the total length of the lens In the embodiments of the present application, the object side and the image side of each lens are aspherical.
  • the focal length of the imaging optical lens is f
  • the focal length unit is millimeter (mm)
  • the focal length of the first lens is f1
  • the focal length of the fourth lens is f4
  • the side surface of the fifth lens The radius of curvature is R9
  • the radius of curvature of the image side of the fifth lens is R10.
  • conditional expression (1) specifies the ratio between the focal length of the first lens L1 and the overall imaging optical lens 10.
  • Conditional expression (2) specifies the ratio between the fourth lens L4 and the focal length of the overall imaging optical lens 10. Such setting helps to improve the performance of the optical system within the range of conditional expressions.
  • Conditional expression (3) specifies the shape of the fifth lens L5. With this arrangement, aberrations generated by the first lens L1, the second lens L2, the third lens L3, and the fourth lens L4 of the optical system can be effectively corrected.
  • each lens (L1, L2, L3, L4, L5) with different refractive powers, the first lens L1 and the overall optical lens 10 having a specific matching relationship in focal length are used.
  • the fourth lens L4 and the fifth lens L5 with a specific shape that have a specific matching relationship with the overall optical lens 10 in focal length can effectively distribute the power of the first lens L1, the fourth lens L4, and the fifth lens L5. It helps to correct the aberration of the optical system, so that the optical system has good optical performance and meets the design requirements of large aperture, ultra-thin and wide-angle.
  • the second lens L2 has a negative refractive power (negative power)
  • the radius of curvature of the object side of the second lens L2 is R3
  • the radius of curvature of the image side of the second lens L2 is R4, R3 and R4 satisfies the following relationship:
  • conditional expression (4) specifies the shape of the second lens L2. In this way, when R3 and R4 are within the range specified by the conditional expression, the degree of deflection of light passing through the lens can be alleviated and the aberration can be effectively reduced.
  • the imaging optical lens 10 can reasonably allocate the power, surface type, material, and on-axis thickness of each lens, etc., and thus corrects various types of aberrations.
  • FIG. 1 is a schematic structural diagram of an imaging optical lens 10 in the first embodiment.
  • the design data of the imaging optical lens 10 in the first embodiment of the present application is shown below.
  • Table 1 lists the curvature radius R of the object side and the image side of the first lens L1 to the fifth lens L5 constituting the imaging optical lens 10 in the first embodiment of the present application, the axial thickness of the lens, the distance d between the lenses, and the refraction Rate nd and Abbe number vd.
  • Table 2 shows the conic coefficient k and aspherical coefficient of the imaging optical lens 10. It should be noted that in this embodiment, the unit of distance, radius, and center thickness is millimeters (mm).
  • R radius of curvature of the optical surface
  • R1 the object side of the first lens L1;
  • R2 the image side of the first lens L1;
  • R3 the object side of the second lens L2;
  • R4 the image side of the second lens L2
  • R5 the object side of the third lens L3;
  • R6 the image side of the third lens L3;
  • R7 the object side of the fourth lens L4;
  • R8 the image side of the fourth lens L4;
  • R9 the object side of the fifth lens L5;
  • R10 the image side of the fifth lens L5;
  • R11 Object side of glass plate GF
  • R12 the image side of the glass plate GF
  • d the axial thickness of the lens or the axial distance between adjacent lenses
  • d2 the axial distance between the image side of the first lens L1 and the object side of the second lens L2;
  • d4 the axial distance between the image side of the second lens L2 and the object side of the third lens L3;
  • d6 the axial distance between the image side of the third lens L3 and the object side of the fourth lens L4;
  • d10 the axial distance between the image side of the fifth lens L5 and the object side of the sixth lens L6;
  • nd refractive index of d line
  • nd1 refractive index of the first lens L1;
  • nd2 refractive index of the second lens L2
  • nd3 refractive index of the third lens L3
  • nd4 refractive index of the fourth lens L4
  • nd5 refractive index of the fifth lens L5;
  • ndg the refractive index of the glass plate GF
  • vg Abbe number of glass plate GF.
  • k is a conic coefficient
  • A4, A6, A8, A10, A12, A14, and A16 are aspherical coefficients.
  • the aspherical surface of each lens is preferably an aspherical surface as shown in the following conditional expression (5).
  • conditional expression (5) the specific form of the following conditional expression (5) is only an example. In fact, It is not limited to the aspherical polynomial form expressed in conditional expression (5).
  • Tables 3 and 4 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 10 of the embodiment of the present application.
  • P1R1, P2R2 represent the object side and the image side of the first lens L1
  • P2R1, P2R2 represent the object side and the image side of the second lens L2
  • P3R1, P3R2 represent the object side and the image side of the third lens L3,
  • P4R1 and P4R2 respectively represent the object side and image side of the fourth lens L4
  • P5R1 and P5R2 respectively represent the object side and image side of the fifth lens L5.
  • the corresponding data in the "Recurve Point Position” column is the vertical distance from the reflex point set on the surface of each lens to the optical axis of the imaging optical lens 10.
  • the corresponding data in the “stay point position” column is the vertical distance between the stagnation point set on the surface of each lens and the optical axis of the imaging optical lens 10.
  • FIGS. 2 and 3 show schematic diagrams of axial aberration and magnification chromatic aberration of light having wavelengths of 486 nm, 588 nm, and 656 nm after passing through the imaging optical lens 10 of the first embodiment.
  • FIG. 4 shows a schematic diagram of field curvature and distortion after the light with a wavelength of 588 nm passes through the imaging optical lens 10 of the first embodiment.
  • the field curvature S in FIG. 4 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.
  • the full-view angle of the imaging optical lens 10 is 2 ⁇
  • FIG. 5 is a schematic diagram of the structure of the imaging optical lens 20 in the second embodiment.
  • the second embodiment is basically the same as the first embodiment, and the symbols have the same meaning as the first embodiment. Only the differences are listed below.
  • Tables 5 and 6 show the design data of the camera 20 according to the second embodiment of the present application. It should be noted that in this embodiment, the unit of distance, radius, and center thickness is millimeters (mm).
  • Table 7 and Table 8 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 20 of the embodiment of the present application.
  • FIG. 6 and 7 respectively show schematic diagrams of axial aberration and magnification chromatic aberration of light having wavelengths of 486 nm, 588 nm, and 656 nm after passing through the imaging optical lens 20 of the second embodiment.
  • FIG. 8 shows a schematic diagram of field curvature and distortion after the light with a wavelength of 588 nm passes through the imaging optical lens 20 of the second embodiment.
  • the field curvature S in FIG. 8 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.
  • the imaging optical lens 20 has a large aperture, ultra-thin, wide angle, and excellent imaging.
  • FIG. 9 is a schematic diagram of the structure of the imaging optical lens 30 in the third embodiment.
  • the third embodiment is basically the same as the first embodiment, and the symbols have the same meaning as the first embodiment. Only the differences are listed below.
  • Table 9 and Table 10 show design data of the imaging optical lens 30 of the third embodiment of the present application. It should be noted that in this embodiment, the unit of distance, radius, and center thickness is millimeters (mm).
  • Table 11 and Table 12 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 30 of the embodiment of the present application.
  • FIG. 10 and 11 respectively show schematic diagrams of axial aberration and magnification chromatic aberration of light having wavelengths of 486 nm, 588 nm, and 656 nm after passing through the imaging optical lens 30 of the third embodiment.
  • FIG. 12 shows a schematic diagram of field curvature and distortion after the light with a wavelength of 588 nm passes through the imaging optical lens 30 of the third embodiment.
  • the field curvature S in FIG. 12 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.
  • the imaging optical lens 30 has a large aperture, ultra-thin, wide-angle, and excellent imaging performance.
  • FIG. 13 is a schematic diagram of the structure of the imaging optical lens 40 in the fourth embodiment.
  • the fourth embodiment is basically the same as the first embodiment, and the symbol meaning is the same as the first embodiment. Only the differences are listed below.
  • Table 13 and Table 14 show the design data of the imaging optical lens 40 according to the fourth embodiment of the present application. It should be noted that in this embodiment, the unit of distance, radius, and center thickness is millimeters (mm).
  • Table 15 and Table 16 show the design data of the inflection point and stagnation point of each lens in the imaging optical lens 40 of the embodiment of the present application.
  • FIG. 14 and 15 show schematic diagrams of axial aberration and magnification chromatic aberration of light having wavelengths of 486 nm, 588 nm, and 656 nm after passing through the imaging optical lens 40 of the fourth embodiment.
  • FIG. 16 is a schematic diagram showing the field curvature and distortion of light having a wavelength of 588 nm after passing through the imaging optical lens 40 of the fourth embodiment.
  • the field curvature S in FIG. 16 is the field curvature in the sagittal direction, and T is the field curvature in the meridional direction.
  • the imaging optical lens 40 has a large aperture, ultra-thin, wide-angle, and excellent imaging performance.
  • Table 17 lists the first, second, third, and fourth embodiments corresponding to the conditional expressions (1), (2), (3), and (4) according to the above conditional expressions. Values and values of other related parameters.
  • Example 1 Example 2
  • Example 3 Example 4 Remarks f1/f 1.04 1.01 1.10 1.09 Conditional (1) f4/f 0.59 0.59 0.51 0.42 Conditional (2) R9/R10 11.01 11.94 11.99 11.99 Conditional (3) R3/R4 1.68 1.69 1.58 1.69 Conditional (4) Fno 2.200 2.200 2.200 A 2 ⁇ 76.002 75.999 75.999 75.995 A f 3.159 3.172 3.165 3.171 A f1 3.279 3.205 3.465 3.457 A f2 -11.014 -10.903 -9.846 -8.441 A f3 -11.259 -10.797 -7.569 -7.771 A f4 1.869 1.874 1.613 1.333 A f5 -1.937 -1.932 -1.919 -1.599 A TTL 4.061 4.038 4.100 4.100 A LB 1.047 1.045 1.186 1.467 A IH 2.492 2.492 2.492 2.492 A

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Abstract

一种摄像光学镜头（10），由物侧至像侧依序包括：一光圈（S1），一具有正屈折力的第一透镜（L1），一具有负屈折力的第二透镜（L2），一具有负屈折力的第三透镜（L3），一具有正屈折力的第四透镜（L4），一具有负屈折力的第五透镜（L5）；摄像光学镜头（10）的焦距为f，焦距单位为毫米，第一透镜（L1）的焦距为f1，第四透镜（L4）的焦距为f4，第五透镜（L5）物侧面的曲率半径为R9，第五透镜（L5）像侧面的曲率半径为R10，满足下列关系式：1≤f1/f≤1.1；0.4≤f4/f≤0.6；11≤R9/R10≤12。摄像光学镜头（10）能在具有良好光学性能的同时，满足大光圈、超薄化、广角化的设计要求。

Description

摄像光学镜头 【技术领域】
本申请涉及光学镜头技术领域，尤其涉及一种适用于智能手机、数码相机等手提终端设备，以及监视器、PC镜头等摄像装置的摄像光学镜头。
【背景技术】
近年来，随着智能手机的兴起，小型化摄影镜头的需求日渐提高，而一般摄影镜头的感光器件不外乎是感光耦合器件(Charge Coupled Device,CCD)或互补性氧化金属半导体器件(Complementary Metal-OxideSemicondctor Sensor,CMOS Sensor)两种，且由于半导体制造工艺技术的精进，使得感光器件的像素尺寸缩小，再加上现今电子产品以功能佳且轻薄短小的外型为发展趋势，因此，具备良好成像品质的小型化摄像镜头俨然成为目前市场上的主流。
为获得较佳的成像品质，传统搭载于手机相机的镜头多采用三片式、四片式透镜结构。然而，随着技术的发展以及用户多样化需求的增多，在感光器件的像素面积不断缩小，且系统对成像品质的要求不断提高的情况下，五片式透镜结构逐渐出现在镜头设计当中，常见的五片式透镜虽然已经具有较好的光学性能，但是其光焦度、透镜间距和透镜形状设置仍然具有一定的不合理性，导致透镜结构无法满足大光圈、超薄化、广角化的设计要求。
【申请内容】
基于此，有必要提供一种具有良好光学性能的同时，满足大光圈、超薄化、广角化的设计要求的摄像光学镜头。
一种摄像光学镜头，包括：一光圈，一具有正屈折力的第一透镜，一具有负屈折力的第二透镜，一具有负屈折力的第三透镜，一具有正屈折力的第四透镜，一具有负屈折力的第五透镜；所述摄像光学镜头的焦距为f，焦距单位为毫米(mm)，所述第一透镜的焦距为f1，所述第四透镜的焦距为f4，所述第五透镜物侧面的曲率半径为R9，所述第五透镜像侧面的曲率半径为R10，满足下列关系式：1.00≤f1/f≤1.1；0.40≤f4/f≤0.60；11.00≤R9/R10≤12.00。
本申请实施方式相对于现有技术而言，通过上述透镜的配置方式，利用具有不同屈折力的透镜、在焦距上与整体光学镜头具有特定配合关系的第一透镜、在焦距上与整体光学镜头具有特定配合关系的第四透镜以及具有特定形状的第五透镜，合理分配第一透镜、第四透镜及第五透镜的光焦度，有利于矫正光学系统的像差，使光学系统在具有良好光学性能的同时，满足大光圈、超薄化、广角化的设计要求。
另外，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的曲率半径为R4，满足下列关系式：1.55≤R3/R4≤1.70。
【附图说明】
图1为本申请第一实施方式中摄像光学镜头的结构示意图；
图2为图1所示摄像光学镜头的轴向像差示意图；
图3为图1所示摄像光学镜头的倍率色差示意图；
图4为图1所示摄像光学镜头的场曲及畸变示意图；
图5为本申请第二实施方式的摄像光学镜头的结构示意图；
图6为图5所示摄像光学镜头的轴向像差示意图；
图7为图5所示摄像光学镜头的倍率色差示意图；
图8为图5所示摄像光学镜头的场曲及畸变示意图；
图9为本申请第三实施方式的摄像光学镜头的结构示意图；
图10为图9所示摄像光学镜头的轴向像差示意图；
图11为图9所示摄像光学镜头的倍率色差示意图；
图12为图9所示摄像光学镜头的场曲及畸变示意图；
图13为本申请第四实施方式的摄像光学镜头的结构示意图；
图14为图13所示摄像光学镜头的轴向像差示意图；
图15为图13所示摄像光学镜头的倍率色差示意图；
图16为图13所示摄像光学镜头的场曲及畸变示意图。
【具体实施方式】
下面结合附图和实施方式对本申请作进一步说明。
以下为第一实施方式：
参考附图，本申请提供了一种摄像光学镜头10。图1所示为本申请第一实施方式的摄像光学镜头10，该摄像光学镜头10包括五个透镜。具体的，所述摄像光学镜头10，由物侧至像侧依序包括：光圈S1、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。本实施方式中，优选的，在第五透镜L5和像面Si之间设置有玻璃平板GF等光学元件，其中玻璃平板GF可以是玻璃盖板，也可以是光学过滤片(filter)，当然在其他可实施方式中，玻璃平板GF还可以设置在其他位置。
本实施方式中，第一透镜L1具有正屈折力，其能够有效减少系统长度，其物侧面向外凸出为凸面，其像侧面为凹面；第二透镜L2具有负屈折力，其物侧面为凸面，其像侧面为凹面；第三透镜L3具有负屈折力，其物侧面为凸面，其像侧面为凹面；第四透镜L4具有正屈折力，其物侧面为凹面，其像侧面为凸面；第五透镜L5具有负屈折力，其物侧面为凸面，其像侧面为凹面。
本申请实施例中，所述第一透镜、第二透镜、第三透镜、第四透镜以及第五透镜的材质均为塑料，可以有效降低生产成本。
此外，透镜的表面可以设置为非球面，非球面可以容易制作成球面以外的形状，获得较多的控制变数，用以消减像差，进而缩减透镜使用的数目，因此可以有效降低本申请摄像光学镜头的总长度。本申请实施例中，各个透镜的物侧面和像侧面均为非球面。
在此，定义所述摄像光学镜头的焦距为f，焦距单位为毫米(mm)，所述第一透镜的焦距为f1，所述第四透镜的焦距为f4，所述第五透镜物侧面的曲率半径为R9，所述第五透镜像侧面的曲率半径为R10。所述f、f1、f4、R9以及R10满足下列关系式：
1.00≤f1/f≤1.10  (1)
0.40≤f4/f≤0.60   (2)
11.00≤R9/R10≤12.00   (3)
其中，条件式(1)规定了第一透镜L1与整体摄像光学镜头10焦距之间的比值。如此设置，可有效分配第一透镜L1的光焦度，对光学系统的像差进行校正，进而提升成像品质。
条件式(2)规定了第四透镜L4与整体摄像光学镜头10焦距之间的比值。如此设置，在条件式范围内有助于提高光学系统性能。
条件式(3)规定了第五透镜L5的形状。如此设置，可以有效校正光学系统第一透镜L1、第二透镜L2、第三透镜L3和第四透镜L4所产生的像差。
本实施方式中，通过上述透镜的配置方式，利用具有不同屈折力的各个透镜(L1、L2、L3、L4、L5)、在焦距上具有特定配合关系的第一透镜L1和整体光学镜头10、在焦距上与整体光学镜头10具有特定配合关系的第四透镜L4以及具有特定形状的第五镜片L5，可以有效分配第一透镜L1、第四透镜L4及第五镜片L5的光焦度，有助于矫正光学系统的像差，使光学系统在具有良好光学性能的同时，满足大光圈、超薄化、广角化的设计要求。
具体的，本申请实施方式中，第二透镜L2具有负屈折力(负光焦度)，第二透镜L2物侧面的曲率半径为R3，第二透镜L2像侧面的曲率半径为R4，R3与R4满足下列关系式：
1.55≤R3/R4≤1.70   (4)
条件式(4)规定了第二透镜L2的形状，如此设置，当R3与R4在条件式规定范围内时，可以缓和光线经过镜片的偏折程度，有效减小像差。
值得一提的是，由于构成本实施方式的摄像光学透镜10的第一透镜L1、第二透镜L2、第三透镜L3、第四透镜L4、第五透镜L5具有如前所述的结构和参数关系，因此，摄像光学镜头10能够合理分配各透镜的光焦度、面型、材料以及各透镜的轴上厚度等，并因此校正了各类像差，本申请中的摄像光学镜头10的光学成像系统Fno≤2.2；摄像光学镜头10的光学总长TTL，摄像光学镜头10的像高IH，满足下列关系式：TTL/IH≤1.65；摄像光学镜头10的视场角FOV，满足以下关系式：FOV≥76度。实现了在具有良好光学成像性能的同时，满足大光圈、超薄化、广角化的设计要求。
图1是第一实施方式中摄像光学镜头10的结构示意图。以下示出了本申请第一实施方式中摄像光学镜头10的设计数据。
表1列出了本申请第一实施方式中构成摄像光学镜头10的第一透镜L1～第五镜头L5的物侧以及像侧曲率半径R、透镜的轴上厚度、透镜间的距离d、折射率nd及阿贝数vd。表2示出了摄像光学镜头10的圆锥系数k与非球面系数。需要说明的是，本实施方式中，距离、半径和中心厚度的单位为毫米(mm)。
【表1】
Figure PCTCN2019114039-appb-000001
Figure PCTCN2019114039-appb-000002
上表中各符号的含义如下。
R：光学面的曲率半径；
S1：光圈；
R1：第一透镜L1的物侧面；
R2：第一透镜L1的像侧面；
R3：第二透镜L2的物侧面；
R4：第二透镜L2的像侧面；
R5：第三透镜L3的物侧面；
R6：第三透镜L3的像侧面；
R7：第四透镜L4的物侧面；
R8：第四透镜L4的像侧面；
R9：第五透镜L5的物侧面；
R10：第五透镜L5的像侧面；
R11:玻璃平板GF的物侧面；
R12:玻璃平板GF的像侧面；
d：透镜的轴上厚度或相邻透镜之间的轴上距离；
d0:光圈S1到第一透镜L1的物侧面的轴上距离；
d1：第一透镜L1的轴上厚度；
d2：第一透镜L1的像侧面到第二透镜L2的物侧面的轴上距离；
d3：第二透镜L2的轴上厚度；
d4：第二透镜L2的像侧面到第三透镜L3的物侧面的轴上距离；
d5：第三透镜L3的轴上厚度；
d6：第三透镜L3的像侧面到第四透镜L4的物侧面的轴上距离；
d7：第四透镜L4的轴上厚度；
d8：第四透镜L4的像侧面到第五透镜L5的物侧面的轴上距离；
d9：第五透镜L5的轴上厚度；
d10：第五透镜L5的像侧面到第六透镜L6的物侧面的轴上距离；
d11：玻璃平板GF的轴上厚度；
d12：玻璃平板GF的像侧面到像面Si的轴上距离；
nd：d线的折射率；
nd1：第一透镜L1的折射率；
nd2：第二透镜L2的折射率；
nd3：第三透镜L3的折射率；
nd4：第四透镜L4的折射率；
nd5：第五透镜L5的折射率；
ndg：玻璃平板GF的折射率；
vd:阿贝数；
v1：第一透镜L1的阿贝数；
v2：第二透镜L2的阿贝数；
v3：第三透镜L3的阿贝数；
v4：第四透镜L4的阿贝数；
v5：第五透镜L5的阿贝数；
vg：玻璃平板GF的阿贝数。
【表2】
Figure PCTCN2019114039-appb-000003
Figure PCTCN2019114039-appb-000004
在表2中，k是圆锥系数，A4、A6、A8、A10、A12、A14、A16是非球面系数。
需要说明的是，本实施方式中各透镜的非球面优选的使用下述条件式(5)所示的非球面，但是，下述条件式(5)的具体形式仅为一个示例，实际上，并不限于条件式(5)中表示的非球面多项式形式。
Y＝(x 2/R)/{1+[1-(1+k)(x 2/R2)]1/2}+A4x4+A6x6+A8x8+A10x10+A12x12+A14x14+A16x16(5)
表3、表4示出本申请实施例的摄像光学镜头10中各透镜的反曲点以及驻点设计数据。其中，P1R1、P2R2分别代表第一透镜L1的物侧面和像侧面，P2R1、P2R2分别代表第二透镜L2的物侧面和像侧面，P3R1、P3R2分别代表第三透镜L3的物侧面和像侧面，P4R1、P4R2分别代表第四透镜L4的物侧面和像侧面，P5R1、P5R2分别代表第五透镜L5的物侧面和像侧面。“反曲点位置”栏位对应数据为各透镜表面所设置的反曲点到摄像光学镜头10光轴的垂直距离。“驻点位置”栏位对应数据为各透镜表面所设置的驻点到摄像光学镜头10光轴的垂直距离。
【表3】
Figure PCTCN2019114039-appb-000005
Figure PCTCN2019114039-appb-000006
【表4】
Figure PCTCN2019114039-appb-000007
另外，在后续的表17中，还列出了第一实施方式中各种参数与条件式中已规定的参数所对应的值。
图2、图3分别示出了波长为486nm、588nm和656nm的光经过第一实施方式的摄像光学镜头10后的轴向像差以及倍率色差示意图。图4则示出了，波长为588nm的光经过第一实施方式的摄像光学镜头10后的场曲及畸变示意图。图4的场曲S是弧矢方向的场曲，T是子午方向的场曲。
在本实施方式中，所述摄像光学镜头10的全画角为2ω，F值为Fno，其中，2ω＝76.0°，Fno＝2.2，如此，摄像光学镜头10具有大光圈、超薄、广角，且具有优秀的成像性能。
以下为第二实施方式：
图5是第二实施方式中摄像光学镜头20的结构示意图，第二实施方式与第一实施方式基本相同，符号含义与第一实施方式相同，以下只列出不同点。
表5、表6示出本申请第二实施方式的摄像头20的设计数据。需要说明的是，本实施方式中，距离、半径和中心厚度的单位为毫米(mm)。
【表5】
Figure PCTCN2019114039-appb-000008
Figure PCTCN2019114039-appb-000009
【表6】
Figure PCTCN2019114039-appb-000010
Figure PCTCN2019114039-appb-000011
表7、表8示出本申请实施例的摄像光学镜头20中各透镜的反曲点以及驻点设计数据。
【表7】
Figure PCTCN2019114039-appb-000012
【表8】
Figure PCTCN2019114039-appb-000013
在后续的表17中，还列出了第二实施方式中各种参数与条件式中已规定的参数所对应的值。
图6、图7分别示出了波长为486nm、588nm和656nm的光经过第二实施方式的摄像光学镜头20后的轴向像差以及倍率色差示意图。图8则示出了波长为588nm的光经过第二实施方式的摄像光学镜头20后的场曲及畸变示意图。图8的场曲S是弧矢方向的场曲，T是子午方向的场曲。
在本实施方式的摄像光学镜头20中，2ω＝76.0°，Fno＝2.2，如此，摄像光学镜头20具有大光圈、超薄、广角，且具有优秀的成像。
以下为第三实施方式：
图9是第三实施方式中摄像光学镜头30的结构示意图，第三实施方式与第一实施方式基本相同，符号含义与第一实施方式相同，以下只列出不同点。
表9、表10示出了本申请第三实施方式的摄像光学镜头30的设计数据。需要说明的是，本实施方式中，距离、半径和中心厚度的单位为毫米(mm)。
【表9】
Figure PCTCN2019114039-appb-000014
【表10】
Figure PCTCN2019114039-appb-000015
Figure PCTCN2019114039-appb-000016
表11、表12示出本申请实施例的摄像光学镜头30中各透镜的反曲点以及驻点设计数据。
【表11】
  反曲点个数 反曲点位置1 反曲点位置2 反曲点位置3 反曲点位置4
P1R1          
P1R2 2 0.195 0.655    
P2R1 2 0.225 0.395    
P2R2          
P3R1 2 0.205 0.705    
P3R2 1 0.335      
P4R1 4 0.185 0.325 0.695 0.845
P4R2 1 0.845      
P5R1 2 0.155 1.195    
P5R2 1 0.445      
【表12】
Figure PCTCN2019114039-appb-000017
在后续的表17中，还列出了第三实施方式中各种参数与条件式中已规定的参数所对应的值。
图10、图11分别示出了波长为486nm、588nm和656nm的光经过第三实施方式的摄像光学镜头30后的轴向像差以及倍率色差示意图。图12则示出了波长为588nm的光经过第三实施方式的摄像光学镜头30后的场曲及畸变示意图。图12的场曲S是弧矢方向的场曲，T是子午方向的场曲。
在本实施方式的摄像光学镜头30中，2ω＝76.0°，Fno＝2.2，如此，摄像光学镜头30具有大光圈、超薄、广角，且具有优秀的成像性能。
以下为第四实施方式：
图13是第四实施方式中摄像光学镜头40的结构示意图，第四实施方式与第一实施方式基本相同，符号含义与第一实施方式相同，以下只列出不同点。
表13、表14示出了本申请第四实施方式的摄像光学镜头40的设计数据。需要说明的是，本实施方式中，距离、半径和中心厚度的单位为毫米(mm)。
【表13】
Figure PCTCN2019114039-appb-000018
Figure PCTCN2019114039-appb-000019
【表14】
Figure PCTCN2019114039-appb-000020
Figure PCTCN2019114039-appb-000021
表15、表16示出本申请实施例的摄像光学镜头40中各透镜的反曲点以及驻点设计数据。
【表15】
  反曲点个数 反曲点位置1 反曲点位置2 反曲点位置3 反曲点位置4
P1R1          
P1R2 4 0.205 0.385 0.525 0.695
P2R1 2 0.245 0.315    
P2R2 1 0.785      
P3R1 3 0.205 0.625 0.785  
P3R2 1 0.335      
P4R1 1 0.395      
P4R2 1 0.825      
P5R1 2 0.175 1.195    
P5R2 1 0.415      
【表16】
Figure PCTCN2019114039-appb-000022
在后续的表17中，还列出了第四实施方式中各种参数与条件式中已规定的参数所对应的值。
图14、图15分别示出了波长为486nm、588nm和656nm的光经过第四实施方式的摄像光学镜头40后的轴向像差以及倍率色差示意图。图16则示出了波长为588nm的光经过第四实施方式的摄像光学镜头40后的场曲及畸变示意图。图16的场曲S是弧矢方向的场曲，T是子午方向的场曲。
在本实施方式的摄像光学镜头40中，2ω＝76.0°，Fno＝2.2，如此，摄像光学镜头40具有大光圈、超薄、广角，且具有优秀的成像性能。
以下表17按照上述条件式列出了第一实施方式、第二实施方式和第三实施方式、第四实施方式中对应各条件式(1)、(2)、(3)、(4)的数值，以及其他相关参数的取值。
【表17】
  实施例1 实施例2 实施例3 实施例4 备注
f1/f 1.04 1.01 1.10 1.09 条件式(1)
f4/f 0.59 0.59 0.51 0.42 条件式(2)
R9/R10 11.01 11.94 11.99 11.99 条件式(3)
R3/R4 1.68 1.69 1.58 1.69 条件式(4)
Fno 2.200 2.200 2.200 2.200  
2ω 76.002 75.999 75.999 75.995  
f 3.159 3.172 3.165 3.171  
f1 3.279 3.205 3.465 3.457  
f2 -11.014 -10.903 -9.846 -8.441  
f3 -11.259 -10.797 -7.569 -7.771  
f4 1.869 1.874 1.613 1.333  
f5 -1.937 -1.932 -1.919 -1.599  
TTL 4.061 4.038 4.100 4.100  
LB 1.047 1.045 1.186 1.467  
IH 2.492 2.492 2.492 2.492  
以上的仅是本申请的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本申请创造构思的前提下，还可以做出改进，但这些均属于本申请的保护范围。

Claims (2)

  1. 一种摄像光学镜头，其特征在于，所述摄像光学镜头，由物侧至像侧依序包括：一光圈，一具有正屈折力的第一透镜，一具有负屈折力的第二透镜，一具有负屈折力的第三透镜，一具有正屈折力的第四透镜，一具有负屈折力的第五透镜；
    所述摄像光学镜头的焦距为f，焦距单位为毫米，所述第一透镜的焦距为f1，所述第四透镜的焦距为f4，所述第五透镜物侧面的曲率半径为R9，所述第五透镜像侧面的曲率半径为R10，满足下列关系式：
    1.00≤f1/f≤1.10；
    0.40≤f4/f≤0.60；
    11.00≤R9/R10≤12.00。
  2. 根据权利要求1所述的摄像光学镜头，其特征在于，所述第二透镜物侧面的曲率半径为R3，所述第二透镜像侧面的曲率半径为R4，满足下列关系式：
    1.55≤R3/R4≤1.70。
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