WO2022237681A1 - 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
WO2022237681A1
WO2022237681A1 PCT/CN2022/091440 CN2022091440W WO2022237681A1 WO 2022237681 A1 WO2022237681 A1 WO 2022237681A1 CN 2022091440 W CN2022091440 W CN 2022091440W WO 2022237681 A1 WO2022237681 A1 WO 2022237681A1
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lens
optical
image side
object side
focal length
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French (fr)
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何俊谚
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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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
    • 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

Definitions

  • the present application relates to the field of optical technology, in particular to an optical lens, an optical module and electronic equipment.
  • the current solution is to use the depth map to simulate the depth of field effect, and the depth map is obtained by using dual-camera parallax or multi-point laser ranging, and the effect of this method is It can only be close to the optical depth of field.
  • various problems of false blurring may occur due to complex scenes and different objects.
  • the embodiments of the present application provide an optical lens, an optical module, and an electronic device, which can solve the problem that the current background blur effect may be falsely blurred due to different complex scenes and objects.
  • an embodiment of the present application provides an optical lens, including: a first lens, a second lens, a third lens, a fourth lens, and a fifth lens arranged in sequence along the optical axis from the object side to the image side and the sixth lens, and the optical centers of the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens are located on the same straight line;
  • the first lens, the second lens, the fourth lens and the fifth lens are all lenses with positive refraction power, and the third lens and the sixth lens are all with negative refraction power lens of force;
  • the object sides of the first lens and the third lens are convex, and the image sides of the first lens and the third lens are concave; the object sides of the second lens and the fourth lens are The image sides are both convex; the object side of the fifth lens is concave, and the image side of the fifth lens is convex; the object side and the image side of the sixth lens are both concave.
  • the embodiment of the present application also provides an optical module, including the above-mentioned optical lens
  • the embodiment of the present application further provides an electronic device, including the above-mentioned optical module.
  • the optical lens in the above-mentioned scheme of the present application adopts six aspherical lenses (namely the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens), and by setting each aspheric lens
  • the bending force of the spherical lens and the curved surface characteristics (convex or concave) on the side of the object and the side of the image can ensure that the optical lens has better optical performance, and can solve the current background blur effect that may be caused by complex scenes and objects.
  • the problem of false virtualization is different.
  • Fig. 1 shows the schematic diagram of depth of field introduction of the embodiment of the present application
  • Fig. 2 represents the schematic diagram of the optical lens of the embodiment of the present application
  • Figure 3 shows one of the schematic diagrams of field curvature in the embodiment of the present application
  • Fig. 4 represents one of the schematic diagrams of the relative illuminance of the embodiment of the present application.
  • Fig. 5 represents one of the schematic diagrams of the axial chromatic aberration of the embodiment of the present application.
  • Figure 6 shows the second schematic diagram of field curvature in the embodiment of the present application.
  • Figure 7 shows the second schematic diagram of the relative illuminance of the embodiment of the present application.
  • Figure 8 shows the second schematic diagram of the axial chromatic aberration of the embodiment of the present application.
  • Figure 9 shows the third schematic diagram of field curvature in the embodiment of the present application.
  • Figure 10 shows the third schematic diagram of the relative illuminance of the embodiment of the present application.
  • FIG. 11 shows the third schematic diagram of the axial chromatic aberration of the embodiment of the present application.
  • the left side of the lens (the left side of the vertical dotted line in Figure 1) is the object side; the right side of the lens (the right side of the vertical dotted line in Figure 1) is the image side; ⁇ is the diameter of the circle of confusion; f is the image distance; F is the lens aperture value ; L is the object distance.
  • the embodiment of the present application provides an optical lens, which can solve the problem that the background blurring effect may be falsely blurred due to different complex scenes and objects during shooting.
  • the optical lens 2 of the embodiment of the present application includes: a first lens 21, a second lens 22, a third lens 23, and a fourth lens 24 arranged in sequence along the optical axis from the object side to the image side , the fifth lens 25 and the sixth lens 26, and the first lens 21, the second lens 22, the third lens 23, the fourth lens 24, the fifth lens 25 and the first lens
  • the optical centers of the six lenses 26 are located on the same straight line.
  • the first lens 21, the second lens 22, the fourth lens 24 and the fifth lens 25 are lenses with positive refractive power
  • the third lens 23 and the sixth lens 26 are lenses with negative refractive power
  • the object side surfaces of the first lens 21 and the third lens 23 are convex, and the image sides of the first lens 21 and the third lens 23 are concave;
  • the object side and image side of the lens 24 are both convex;
  • the object side of the fifth lens 25 is concave, and the image side of the fifth lens 25 is convex;
  • the object side and image side of the sixth lens 26 are both concave.
  • the object side can be understood as the side of the lens facing the object
  • the image side can be understood as the side of the lens facing the imaging side, for example: after the light emitted or reflected by the object on the first side of the lens passes through the lens, The image is formed on the second side of the lens; wherein, the first side and the second side are opposite sides of the lens, the first side can be called the object side, and the second side can be called the image side.
  • the concave surface can be understood as the surface of the lens is depressed in the direction close to the optical center
  • the convex surface can be understood as the surface of the lens is convex in the direction away from the optical center.
  • the lens with positive refraction power has the effect of concentrating light
  • the lens with negative refraction power has the effect of scattered light.
  • some of the six aspheric lenses of the above-mentioned optical lens have the lens with positive refraction power.
  • the combination with another part of the lens with negative refraction force can satisfy the focusing and discrete neutralization effects, ensure that the optical lens has a good dispersion effect, and meet the zoom ratio requirements of the optical lens.
  • six aspheric lenses namely the first lens, the second lens, the third lens, the fourth lens, the fifth lens and the sixth lens
  • the curved surface features ie, convex or concave
  • the electronic equipment using the optical lens can solve the background blur effect of the current electronic equipment that may be caused by complex scenes and The difference in shooting objects creates the problem of false blur.
  • the dispersion coefficient of the lens in the optical lens 2 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.
  • the first lens 21 is a convex-convex lens, that is, the first surface of Lens1 away from the photosensitive element (sensor) is a convex surface, and the second surface close to the sensor is a concave surface
  • the second lens 22 is a biconvex lens, that is The first surface of Lens2 away from the sensor and the second surface close to the sensor are both convex
  • the third lens 23 is a convex-concave lens, that is, the first surface of Lens3 away from the sensor is convex, and the second surface of Lens3 close to the sensor is concave
  • the fourth lens 24 is a biconvex lens, that is, the first surface of Lens4 away from the sensor and the second surface close to the sensor are convex
  • the fifth lens 25 is a concave-convex lens, that is, the first surface of Lens5 away from the sensor is Concave, the second surface close to the sensor
  • the six aspherical lenses of the optical lens adopt a combination of convex-convex lens, biconvex lens, concave-convex lens and bi-concave lens, so that the optical lens can have a good refraction effect through lenses with different light-gathering or discrete light degrees. and dispersion effects.
  • the first lens 21 and the second lens 22 can use low-refractive-index plastic lenses with low-refractive index, and satisfy the relational expression of dispersion coefficient: 1.00 ⁇ V1/V2 ⁇ 1.01, which can reduce the cost;
  • the second lens 22, the second The three lens 23 can use low refractive index and high refractive index plastic lens, and satisfy the relationship: 2.73 ⁇ V2/V3 ⁇ 2.91, which can reduce the cost and will not destroy the dispersion;
  • the third lens 23 and the fourth lens 24 can use high refraction low refractive index plastic lens, and satisfy the relationship: 0.34 ⁇ V3/V4 ⁇ 0.37, which can reduce the cost without destroying the dispersion;
  • the fourth lens 24 and the fifth lens 25 can use low refractive index and high refractive index plastic lens , and satisfy the relationship: 2.73 ⁇ V4/V5 ⁇ 2.91, which can reduce the cost without destroying the dispersion;
  • the fifth lens 25 and the sixth lens 26 use high refractive index and low refractive index plastic lenses, and satisfy the relationship
  • a lens with a high refractive index can realize imaging at a shorter distance, but compared with a lens with a low refractive index, the dispersion effect will be weakened.
  • the six aspherical lenses of the optical lens adopt the combination of the above-mentioned high refractive index and low refractive index lenses, while ensuring the dispersion effect of the optical lens, it is also possible to ensure that the optical lens has the same effect in the optical direction. Smaller overall size.
  • the optical lens 2 also includes: an aperture 27; the aperture 27 is arranged between the third lens 23 and the fourth lens 24 to ensure that the optical lens 2 has a better modulation transfer function (Modulation Transfer Function, MTF) and larger aperture.
  • MTF Modulation Transfer Function
  • the surface radius of the lens in the optical lens 2 satisfies the following relationship:
  • R1 is the object side radius of the first lens
  • R2 is the image side radius of the first lens
  • R3 is the object side radius of the second lens
  • R4 is the image side radius of the second lens
  • R5 is the object side radius of the third lens
  • R6 is the image side radius of the third lens
  • R7 is the object side radius of the fourth lens
  • R8 is the image side radius of the fourth lens
  • R9 is The object side radius of the fifth lens
  • R10 is the image side radius of the fifth lens
  • R11 is the object side radius of the sixth lens
  • R12 is the image side radius of the sixth lens.
  • the object side surface of the first lens 21 is convex, which can effectively avoid stray light such as ghost images, and the use of low refractive index glass lenses can effectively suppress dispersion.
  • the six aspheric lenses of the optical lens in the embodiment of the present application adopt the combination of the above-mentioned surface radii, which can meet the requirements of manufacturability while satisfying the better refraction effect of the optical lens, so as to facilitate manufacturing.
  • the curved surface it presents has a light-gathering effect; if the surface radius is negative, the curved surface it presents has a discrete light effect.
  • the six aspheric lenses of the optical lens in the embodiment of the present application adopt the combination of the above-mentioned surface radii, which can also realize the reconciliation of light concentrating and scattered light, and satisfy the dispersion effect of the optical lens.
  • the focal length of the lens in the optical lens 2 satisfies the following relationship:
  • f1 is the focal length of the first lens
  • f2 is the focal length of the second lens
  • f3 is the focal length of the third lens
  • f4 is the focal length of the fourth lens
  • f5 is the focal length of the fifth lens Focal length
  • f6 is the focal length of the sixth lens.
  • the size of the focal length can reflect the size of the light-gathering or discrete light ability of the lens, for example, the smaller the focal length, the imaging effect can be achieved at a shorter distance.
  • the six aspherical lenses of the optical lens in the embodiment of the present application adopt the combination of the above-mentioned focal lengths, which can ensure that the effective focal length range of the optical lens 2 is: 9mm-10mm.
  • the lens presents a light-gathering effect; if the focal length is negative, the lens presents a discrete light effect.
  • the six aspheric lenses of the optical lens in the embodiment of the present application adopt the combination of the above-mentioned focal lengths, which can also realize the reconciliation of concentrated light and scattered light, and satisfy the dispersion effect of the optical lens.
  • the central thickness of the lens on the optical axis in the optical lens 2 satisfies the following relationship:
  • CT1 is the central thickness of the first lens on the optical axis
  • CT2 is the central thickness of the second lens on the optical axis
  • CT3 is the central thickness of the third lens on the optical axis
  • CT4 is the central thickness of the third lens on the optical axis.
  • CT5 is the central thickness of the fifth lens on the optical axis
  • CT6 is the central thickness of the sixth lens on the optical axis.
  • the optical lens 2 further includes: a photosensitive element 28 ; the photosensitive element 28 is disposed adjacent to the image side of the sixth lens 26 .
  • the photosensitive element 28 is located on the image side of the optical lens, that is, behind the sixth lens 26 ; the photosensitive element 28 can be used for imaging.
  • the diagonal length of the photosensitive element 28 is 1/2.0 inch.
  • the diagonal length range of the effective imaging size (or effective imaging area) of the photosensitive element 28 is: 8.0mm ⁇ 8.4mm.
  • the optical lens 2 further includes: an infrared filter 29 ; the infrared filter 29 is located between the photosensitive element 28 and the sixth lens 26 .
  • the infrared filter can pass through the spectral energy of the visible light band and filter out the spectral energy of the near infrared band, so as to improve the imaging effect of the optical lens.
  • the optical lens 2 is suitable for visible light, and the wavelength range of the optical lens 2 is: 400nm-700nm.
  • the effective focal length range of the optical lens 2 is: 9mm-10mm.
  • the relative aperture of the optical lens 2 is smaller than 1.2.
  • Example 1 Use the following aspheric equation and the specific implementation parameters in Table 1 and Table 2:
  • C is the radius of curvature
  • K is the cone coefficient
  • A1 ⁇ An are the aspheric coefficients
  • X is the X-axis coordinate of the aspheric surface
  • Z is the Z-axis coordinate of the aspheric surface.
  • Example 2 Use the following aspheric equation and the specific implementation parameters in Table 3 and Table 4:
  • C is the radius of curvature
  • K is the cone coefficient
  • A1 ⁇ An are the aspheric coefficients
  • X is the X-axis coordinate of the aspheric surface
  • Z is the Z-axis coordinate of the aspheric surface.
  • Example 3 Use the following aspheric equation and the specific implementation parameters in Table 5 and Table 6:
  • C is the radius of curvature
  • K is the cone coefficient
  • A1 ⁇ An are the aspheric coefficients
  • X is the X-axis coordinate of the aspheric surface
  • Z is the Z-axis coordinate of the aspheric surface.
  • the embodiment of the present application also provides an optical module, including the above-mentioned optical lens 2 .
  • the optical module may be a module that can use the optical lens 2 to obtain image data of external objects, such as a camera module.
  • the optical module in the embodiment of the present application can achieve the technical effects achieved by the optical lens 2 above, and to avoid repetition, details will not be repeated here.
  • An embodiment of the present application also provides an electronic device, including the above-mentioned optical module.
  • an electronic device including the above-mentioned optical module.
  • the above optical module in order to avoid repetition, it will not be repeated here.

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

本申请公开了一种光学镜头、光学模组及电子设备，涉及光学技术领域；该光学镜头包括：沿着光轴由物侧至像侧依序设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜；其中，第一透镜、第二透镜、第四透镜和第五透镜均为具有正曲折力的透镜，第三透镜和第六透镜均为具有负曲折力的透镜；第一透镜和第三透镜的物侧面均为凸面，像侧面均为凹面；第二透镜和第四透镜的物侧面和像侧面均为凸面；第五透镜的物侧面为凹面，像侧面为凸面；第六透镜的物侧面和像侧面均为凹面。

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2021年5月10日在中国提交的中国专利申请No.202110504919.4的优先权，其全部内容通过引用包含于此。
技术领域
本申请涉及光学技术领域，尤其涉及一种光学镜头、光学模组及电子设备。
背景技术
用户对摄像头模组的要求越来越高，如在人像镜头应用上，对于背景虚化的拍照质量要求越来越高。
为了提高拍照时背景虚化的质量，目前的解决方案是使用深度图模拟出景深效果，而深度图的取得则是使用双摄视差或是多点雷射测距的方式，而此种方法效果只能接近光学景深，在人物背景虚化效果上则可能因复杂场景及拍摄物的不同，产生各种误虚化的问题。
发明内容
本申请实施例提供了一种光学镜头、光学模组及电子设备，能够解决目前拍摄时的背景虚化效果可能因复杂场景及拍摄物的不同产生误虚化的问题。
为了解决上述技术问题，本申请是这样实现的：
第一方面，本申请实施例提供了一种光学镜头，包括：沿着光轴由物侧至像侧依序设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，且所述第一透镜、所述第二透镜、所述第三透镜、所述第四透镜、所述第五透镜和所述第六透镜的光学中心位于同一直线；
其中，所述第一透镜、所述第二透镜、所述第四透镜和所述第五透镜均为具有正曲折力的透镜，所述第三透镜和所述第六透镜均为具有负曲折力的 透镜；
所述第一透镜和所述第三透镜的物侧面均为凸面，所述第一透镜和所述第三透镜像侧面均为凹面；所述第二透镜和所述第四透镜的物侧面和像侧面均为凸面；所述第五透镜的物侧面为凹面，所述第五透镜的像侧面为凸面；所述第六透镜的物侧面和像侧面均为凹面。
第二方面，本申请实施例还提供了一种光学模组，包括如上所述的光学镜头
第三方面，本申请实施例还提供了一种电子设备，包括如上所述的光学模组。
这样，本申请的上述方案中的光学镜头，采用六个非球面镜片(即第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜)，且通过设置各个非球面镜片的曲折力以及物侧面和像侧面的曲面特征(即凸面或凹面)，可以保证光学镜头具有较好的光学性能，能够解决目前拍摄时的背景虚化效果可能因复杂场景及拍摄物的不同产生误虚化的问题。
附图说明
图1表示本申请实施例的景深介绍示意图；
图2表示本申请实施例的光学镜头的示意图；
图3表示本申请实施例的场曲的示意图之一；
图4表示本申请实施例的相对照度的示意图之一；
图5表示本申请实施例的轴上色差的示意图之一；
图6表示本申请实施例的场曲的示意图之二；
图7表示本申请实施例的相对照度的示意图之二；
图8表示本申请实施例的轴上色差的示意图之二；
图9表示本申请实施例的场曲的示意图之三；
图10表示本申请实施例的相对照度的示意图之三；
图11表示本申请实施例的轴上色差的示意图之三。
附图标记说明：
2、光学镜头；21、第一透镜；22、第二透镜；23、第三透镜；24、第四透镜；25、第五透镜；26、第六透镜；27、光圈；28、感光元件；29、红外滤光片。
具体实施方式
下面将参照附图更详细地描述本申请的示例性实施例。虽然附图中显示了本申请的示例性实施例，然而应当理解，可以以各种形式实现本申请而不应被这里阐述的实施例所限制。相反，提供这些实施例是为了能够更透彻地理解本申请，并且能够将本申请的范围完整的传达给本领域的技术人员。
以下结合图1对景深进行介绍：
透镜左侧(如图1中垂直虚线左侧)为物侧；透镜右侧(如图1中垂直虚线右侧)为像侧；δ为弥散圆直径；f为像距；F为镜头光圈值；L为物距。
则，前景深为：ΔL1＝(FδL 2)/(f 2+FδL)；
远景深为：ΔL2＝(FδL 2)/(f 2-FδL)。
本申请实施例提供了一种光学镜头，能够解决目前拍摄时的背景虚化效果可能因复杂场景及拍摄物的不同产生误虚化的问题。
如图2所示，本申请实施例的光学镜头2，包括：沿着光轴由物侧至像侧依序设置的第一透镜21、第二透镜22、第三透镜23、第四透镜24、第五透镜25和第六透镜26，且所述第一透镜21、所述第二透镜22、所述第三透镜23、所述第四透镜24、所述第五透镜25和所述第六透镜26的光学中心位于同一直线。
其中，所述第一透镜21、所述第二透镜22、所述第四透镜24和所述第五透镜25均为具有正曲折力的透镜，所述第三透镜23和所述第六透镜26均为具有负曲折力的透镜。
所述第一透镜21和所述第三透镜23的物侧面均为凸面，所述第一透镜21和所述第三透镜23像侧面均为凹面；所述第二透镜22和所述第四透镜24 的物侧面和像侧面均为凸面；所述第五透镜25的物侧面为凹面，所述第五透镜25的像侧面为凸面；所述第六透镜26的物侧面和像侧面均为凹面。
可选地，物侧面可以理解为透镜中朝向物体的一侧面，像侧面可以理解为透镜中朝向成像侧的一侧面，例如：位于透镜第一侧的物体发射或反射的光线通过该透镜后，在透镜的第二侧面成像；其中，该第一侧面和第二侧面为透镜上相背的两侧面，该第一侧面可以称为物侧面，该第二侧面可以称为像侧面。
可选地，凹面可以理解为透镜的表面在靠近光学中心的方向凹陷，凸面可以理解为透镜的表面在远离光学中心的方向凸起。
可选地，具有正曲折力的透镜具有聚光的效果，具有负曲折力的透镜具有离散光的效果，该方案通过上述光学镜头的六个非球面镜片中采用的一部分具有正曲折力的透镜和另一部分具有负曲折力的透镜的组合，可以满足聚焦和离散的中和效果，保证该光学镜头具有良好的色散效果，以及满足该光学镜头的缩放倍率要求。
本申请实施例中，采用六个非球面镜片(即第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜)，且通过设置各个非球面镜片的曲折力以及物侧面和像侧面的曲面特征(即凸面或凹面)，可以保证光学镜头具有较好的光学性能，且应用该光学镜头的电子设备，能够解决目前电子设备的背景虚化效果可能因复杂场景及拍摄物的不同产生误虚化的问题。
可选地，所述光学镜头2中透镜的色散系数满足以下关系：
1.00<V1/V2<1.01；
2.73<V2/V3<2.91；
0.34<V3/V4<0.37；
2.73<V4/V5<2.91；
0.34<V5/V6<0.36；
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。
具体的，第一透镜21(Lens1)为凸凹透镜，即Lens1远离感光元件(sensor)的第一面是凸面，靠近sensor的第二面是凹面；第二透镜22(Lens2)为双凸透镜，即Lens2远离sensor的第一面和靠近sensor的第二面均为凸面；第三透镜23(Lens3)为凸凹透镜，即Lens3远离sensor的第一面是凸面，Lens3靠近sensor的第二面是凹面；第四透镜24(Lens4)为双凸透镜，即Lens4远离sensor的第一面和靠近sensor的第二面均为凸面；第五透镜25(Lens5)为凹凸透镜，即Lens5远离sensor的第一面是凹面，靠近sensor的第二面是凸面；第六透镜26(Lens6)为双凹透镜，即Lens6远离sensor的第一面和靠近sensor的第二面均为凹面。
该实施例中，光学镜头的六个非球面镜片中采用凸凹透镜、双凸透镜、凹凸透镜和双凹透镜的组合，从而可以通过不同聚光或离散光程度的透镜满足该光学镜头具有良好的折射效果和色散效果。
可选地，第一透镜21、第二透镜22可以使用低折射率搭配低折射率塑料镜片，并满足色散系数关系式：1.00<V1/V2<1.01，可以降低成本；第二透镜22、第三透镜23可以使用低折射率搭配高折射率塑料镜片，并满足关系式：2.73<V2/V3<2.91，可以降低成本且不会破坏色散；第三透镜23、第四透镜24可以使用高折射率搭配低折射率塑料镜片，并满足关系式：0.34<V3/V4<0.37，可以降低成本且不会破坏色散；第四透镜24、第五透镜25可以使用低折射率搭配高折射率塑料镜片，并满足关系式：2.73<V4/V5<2.91，可以降低成本且不会破坏色散；第五透镜25、第六透镜26使用高折射率搭配低折射率塑料镜片，并满足关系式：0.34<V5/V6<0.36，可以降低成本且不会破坏色散。
其中，具有高折射率的透镜可以在较短的距离上实现成像，但是相较于低折射率的透镜的色散效果会削弱。该实施例中，光学镜头的六个非球面镜片中采用上述高折射率和低折射率的透镜的组合方式，在保证光学镜头的色散效果的同时，还可以保证光学镜头在光学方向上的具有较小的整体尺寸。
可选地，所述光学镜头2还包括：光圈27；所述光圈27设置于所述第三透镜23与所述第四透镜24之间，以保证该光学镜头2有较好的调制传递函数(Modulation Transfer Function，MTF)及较大的光圈。
可选地，所述光学镜头2中透镜的表面半径满足以下关系：
5.61mm<R1<5.68mm；
1.54mm<R2<6.79mm；
4.98mm<R3<5.24mm；
-21.18mm>R4>-12.5mm；
4.9mm<R5<5.13mm；
0.56mm<R6<2.4mm；
9.00mm<R7<10.03mm；
-5.39mm>R8>-12.5mm；
-9.68mm>R9>-8.79mm；
-7.48mm>R10>-1.31mm；
-16.54mm>R11>-13.05mm；
2.1mm<R12<4.32mm；
其中，R1为所述第一透镜的物侧面半径，R2为所述第一透镜的像侧面半径，R3为所述第二透镜的物侧面半径，R4为所述第二透镜的像侧面半径，R5为所述第三透镜的物侧面半径，R6为所述第三透镜的像侧面半径，R7为所述第四透镜的物侧面半径，R8为所述第四透镜的像侧面半径，R9为所述第五透镜的物侧面半径，R10为所述第五透镜的像侧面半径，R11为所述第六透镜的物侧面半径，R12为所述第六透镜的像侧面半径。
其中，表面半径的值越大，其呈现的曲面越平缓，以便于加工制造；而表面半径的值越小，其呈现的曲面的凹凸效果越明显，具有更好的折射效果。该实施例中，所述第一透镜21的物侧面为凸面，可以有效避免产生鬼影类的杂散光，且使用低折射率玻璃镜片，可以有效抑制色散。并且，本申请实施例中光学镜头的六个非球面镜片中采用上述表面半径的组合方式，在满足光 学镜头具有较好的折射效果的同时还可以满足加工制造性的要求，以便于制造。
其中，表面半径为正值，其呈现的曲面具有聚光效果；表面半径为负值，其呈现的曲面具有离散光效果。本申请实施例中的光学镜头的六个非球面镜片中采用上述表面半径的组合方式，还可以实现聚光和离散光的调和，满足光学镜头的色散效果。
可选地，所述光学镜头2中透镜的焦距满足以下关系：
47.05mm<f1<67.27mm；
7.27mm<f2<7.90mm；
-8.28mm>f3>-7.70mm；
6.70mm<f4<6.81mm；
32.36mm<f5<38.91mm；
-5.99mm>f6>-5.87mm；
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。
其中，焦距的大小可以反映透镜的聚光或者离散光能力的大小，如焦距越小，其在较短的距离上就可以达到成像效果。本申请实施例中光学镜头的六个非球面镜片中采用上述焦距的组合方式，可以保证所述光学镜头2的有效焦距范围为：9mm～10mm。
其中，焦距为正值，其透镜呈现为聚光效果；焦距为负值，其透镜呈现为离散光效果。本申请实施例中的光学镜头的六个非球面镜片中采用上述焦距的组合方式，还可以实现聚光和离散光的调和，满足光学镜头的色散效果。
可选地，所述光学镜头2中透镜在光轴上的中心厚度满足以下关系：
0.97mm<CT1<1.15mm；
1.96mm<CT2<2.18mm；
0.97mm<CT3<1.00mm；
2.06mm<CT4<2.21mm；
1.16mm<CT5<1.49mm；
0.57mm<CT6<0.58mm；
其中，CT1为所述第一透镜在光轴上的中心厚度，CT2为所述第二透镜在光轴上的中心厚度，CT3为所述第三透镜在光轴上的中心厚度，CT4为所述第四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，CT6为所述第六透镜在光轴上的中心厚度。
该实施例中，在满足光学镜头的光学效果(如色散效果、折射效果等)以及光学镜头的整体尺寸要求的情况下，通过将透镜的中心厚度限制在预设范围内，可以满足加工制造性的要求，以避免中心厚度过大或过小带来的加工难度。
可选地，所述光学镜头2还包括：感光元件28；所述感光元件28与所述第六透镜26的像侧面相邻设置。
如图2所示，该感光元件28位于光学镜头的像侧，即第六透镜26的后方；感光元件28可以用于成像。
可选地，所述感光元件28的对角线长度为1/2.0英寸。所述感光元件28的有效成像大小(或称为有效成像区域)的对角长度范围为：8.0mm～8.4mm。
可选地，所述光学镜头2还包括：红外滤光片29；所述红外滤光片29位于所述感光元件28与所述第六透镜26之间。
其中，红外滤光片可以透过可见光波段的光谱能量，滤去近红外波段的光谱能量，以提高光学镜头的成像效果。
可选地，所述光学镜头2适用于可见光，所述光学镜头2应用的波长范围为：400nm～700nm。所述光学镜头2的有效焦距范围为：9mm～10mm。所述光学镜头2的相对孔径小于1.2。
以下结合具体示例对本申请实施例的光学镜头的光学效果进行说明：
示例一：采用如下非球面方程式与表1和表2中的具体实施的参数：
Figure PCTCN2022091440-appb-000001
其中，C为曲率半径；K为圆锥系数；A1～An为非球面系数；X为非球面X轴座标；Z为非球面Z轴座标。
表1(单位mm)
Figure PCTCN2022091440-appb-000002
表2
Figure PCTCN2022091440-appb-000003
Figure PCTCN2022091440-appb-000004
该实施例光学镜头2可以实现光学畸变(Opticaldistortion)为：0.0％<Opticaldistortion<1.28％；场曲(Field Curvature)如图3所示；相对照度(Relativeillumination)为：Relativeillumination>74.97％(如图4所示)；轴上色差如图5所示；视场角(Field Of View)为：FOV＝45.75度、焦数或相对孔径(F-Number)为：F.no＝1.15、有效焦距(Effective Focal Length)为：EFL＝9.35mm。
示例二：采用如下非球面方程式与表3和表4中的具体实施的参数：
Figure PCTCN2022091440-appb-000005
其中，C为曲率半径；K为圆锥系数；A1～An为非球面系数；X为非球面X轴座标；Z为非球面Z轴座标。
表3(单位mm)
Figure PCTCN2022091440-appb-000006
Figure PCTCN2022091440-appb-000007
表4
Figure PCTCN2022091440-appb-000008
Figure PCTCN2022091440-appb-000009
该实施例光学镜头2可以实现光学畸变为：0.0％<Opticaldistortion<1.27％；场曲如图6所示；相对照度为：Relativeillumination>75.52％(如图7所示)；轴上色差如图8所示；视场角为：FOV＝45.60度、焦数或相对孔径为：F.no＝1.15、有效焦距为：EFL＝9.41mm。
示例三：采用如下非球面方程式与表5和表6中的具体实施的参数：
Figure PCTCN2022091440-appb-000010
其中，C为曲率半径；K为圆锥系数；A1～An为非球面系数；X为非球面X轴座标；Z为非球面Z轴座标。
表5(单位mm)
注解 曲率半径 厚度 半径 圆锥系数 材料Nd/Abbe
镜片一 5.68 1.107 4.285 -0.113 1.54/55.98
  6.79 0.623 4.172 0.040  
光圈   0.635 4.129 0.000  
镜片二 5.24 1.964 4.024 0.033 1.54/55.98
  -21.18 0.080 3.921 -16.004  
镜片三 4.90 1.004 3.543 -9.805 1.67/19.24
  2.40 1.791 3.165 -2.581  
    0.356 3.250 0.000  
镜片四 9.78 2.162 3.683 -4.368 1.54/55.98
  -5.39 0.080 3.789 -11.354  
镜片五 -8.81 1.359 3.804 2.677 1.67/19.24
  -6.87 0.708 4.138 1.262  
镜片六 -15.86 0.573 3.939 9.733 1.54/55.98
  4.10 0.459 4.164 -7.684  
红外滤光片   0.210 4.089 0.000  
表6
Figure PCTCN2022091440-appb-000011
Figure PCTCN2022091440-appb-000012
该实施例光学镜头2可以实现光学畸变为：0.0％<Opticaldistortion<1.29％；场曲如图9所示；相对照度为：Relativeillumination>75.43％(如图10所示)；轴上色差如图11所示；视场角为：FOV＝45.80度、焦数或相对孔径为：F.no＝1.15、有效焦距为：EFL＝9.36mm。
本申请实施例还提供一种光学模组，包括如上所述的光学镜头2。可选地，该光学模组可以是能够应用光学镜头2获取外界物体的图像数据的模组，如摄像模组等。本申请实施例中的光学模组能够能达到如上光学镜头2所能实现的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种电子设备，包括如上所述的光学模组。可选地，并能达到如上光学模组所能实现的技术效果，为避免重复，这里不再赘述。
本说明书中的各个实施例均采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似的部分互相参见即可。
尽管已描述了本申请实施例的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例做出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请实施例范围的所有变更和修改。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，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、物品或者终端设备不仅包括那些要素，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、物品或者终端设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者终端设备中还存在另外的相同要素。
以上所述的是本申请的优选实施方式，应当指出对于本技术领域的普通人员来说，在不脱离本申请所述的原理前提下还可以作出若干改进和润饰，这些改进和润饰也在本申请的保护范围内。

Claims (15)

  1. 一种光学镜头，包括：沿着光轴由物侧至像侧依序设置的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜和第六透镜，且所述第一透镜、所述第二透镜、所述第三透镜、所述第四透镜、所述第五透镜和所述第六透镜的光学中心位于同一直线；
    其中，所述第一透镜、所述第二透镜、所述第四透镜和所述第五透镜均为具有正曲折力的透镜，所述第三透镜和所述第六透镜均为具有负曲折力的透镜；
    所述第一透镜和所述第三透镜的物侧面均为凸面，所述第一透镜和所述第三透镜的像侧面均为凹面；所述第二透镜和所述第四透镜的物侧面和像侧面均为凸面；所述第五透镜的物侧面为凹面，所述第五透镜的像侧面为凸面；所述第六透镜的物侧面和像侧面均为凹面。
  2. 根据权利要求1所述的光学镜头，其中，所述光学镜头中透镜的色散系数满足以下关系：
    1.00<V1/V2<1.01；
    2.73<V2/V3<2.91；
    0.34<V3/V4<0.37；
    2.73<V4/V5<2.91；
    0.34<V5/V6<0.36；
    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。
  3. 根据权利要求1所述的光学镜头，其中，还包括：
    光圈，所述光圈设置于所述第三透镜与所述第四透镜之间。
  4. 根据权利要求1所述的光学镜头，其中，所述光学镜头中透镜的表面半径满足以下关系：
    5.61mm<R1<5.68mm；
    1.54mm<R2<6.79mm；
    4.98mm<R3<5.24mm；
    -21.18mm>R4>-12.5mm；
    4.9mm<R5<5.13mm；
    0.56mm<R6<2.4mm；
    9.00mm<R7<10.03mm；
    -5.39mm>R8>-12.5mm；
    -9.68mm>R9>-8.79mm；
    -7.48mm>R10>-1.31mm；
    -16.54mm>R11>-13.05mm；
    2.1mm<R12<4.32mm；
    其中，R1为所述第一透镜的物侧面半径，R2为所述第一透镜的像侧面半径，R3为所述第二透镜的物侧面半径，R4为所述第二透镜的像侧面半径，R5为所述第三透镜的物侧面半径，R6为所述第三透镜的像侧面半径，R7为所述第四透镜的物侧面半径，R8为所述第四透镜的像侧面半径，R9为所述第五透镜的物侧面半径，R10为所述第五透镜的像侧面半径，R11为所述第六透镜的物侧面半径，R12为所述第六透镜的像侧面半径。
  5. 根据权利要求1所述的光学镜头，其中，所述光学镜头中透镜的焦距满足以下关系：
    47.05mm<f1<67.27mm；
    7.27mm<f2<7.90mm；
    -8.28mm>f3>-7.70mm；
    6.70mm<f4<6.81mm；
    32.36mm<f5<38.91mm；
    -5.99mm>f6>-5.87mm；
    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。
  6. 根据权利要求1所述的光学镜头，其中，所述光学镜头中透镜在光轴上的中心厚度满足以下关系：
    0.97mm<CT1<1.15mm；
    1.96mm<CT2<2.18mm；
    0.97mm<CT3<1.00mm；
    2.06mm<CT4<2.21mm；
    1.16mm<CT5<1.49mm；
    0.57mm<CT6<0.58mm；
    其中，CT1为所述第一透镜在光轴上的中心厚度，CT2为所述第二透镜在光轴上的中心厚度，CT3为所述第三透镜在光轴上的中心厚度，CT4为所述第四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，CT6为所述第六透镜在光轴上的中心厚度。
  7. 根据权利要求1所述的光学镜头，其中，还包括：
    感光元件，所述感光元件与所述第六透镜的像侧面相邻设置。
  8. 根据权利要求7所述的光学镜头，其中，所述感光元件的对角线长度为1/2.0英寸。
  9. 根据权利要求7所述的光学镜头，其中，所述感光元件的有效成像大小的对角长度范围为：8.0mm～8.4mm。
  10. 根据权利要求7所述的光学镜头，其中，还包括：
    红外滤光片，所述红外滤光片位于所述感光元件与所述第六透镜之间。
  11. 根据权利要求1所述的光学镜头，其中，所述光学镜头应用的波长范围为：400nm～700nm。
  12. 根据权利要求1所述的光学镜头，其中，所述光学镜头的有效焦距范围为：9mm～10mm。
  13. 根据权利要求1所述的光学镜头，其中，所述光学镜头的相对孔径 小于1.2。
  14. 一种光学模组，包括如权利要求1至13中任一项所述的光学镜头。
  15. 一种电子设备，包括如权利要14所述的光学模组。
PCT/CN2022/091440 2021-05-10 2022-05-07 光学镜头、光学模组及电子设备 Ceased WO2022237681A1 (zh)

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Publication number Priority date Publication date Assignee Title
CN102819095A (zh) * 2011-06-10 2012-12-12 大立光电股份有限公司 影像拾取透镜组
CN103676089A (zh) * 2013-08-29 2014-03-26 玉晶光电(厦门)有限公司 光学成像镜头及应用该光学成像镜头的电子装置
CN104101988A (zh) * 2013-04-01 2014-10-15 索尼公司 成像透镜和成像设备
JP2016138952A (ja) * 2015-01-27 2016-08-04 富士フイルム株式会社 撮像レンズおよび撮像レンズを備えた撮像装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102819095A (zh) * 2011-06-10 2012-12-12 大立光电股份有限公司 影像拾取透镜组
CN104101988A (zh) * 2013-04-01 2014-10-15 索尼公司 成像透镜和成像设备
CN103676089A (zh) * 2013-08-29 2014-03-26 玉晶光电(厦门)有限公司 光学成像镜头及应用该光学成像镜头的电子装置
JP2016138952A (ja) * 2015-01-27 2016-08-04 富士フイルム株式会社 撮像レンズおよび撮像レンズを備えた撮像装置

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