WO2022037576A1

WO2022037576A1 - Optical lens, camera module and electronic device

Info

Publication number: WO2022037576A1
Application number: PCT/CN2021/113002
Authority: WO
Inventors: 王恒; 王伟; 何瑛勇; 夏太红; 牛亚军; 叶海水
Original assignee: 华为技术有限公司
Priority date: 2020-08-21
Filing date: 2021-08-17
Publication date: 2022-02-24
Also published as: CN114167569B; CN114167569A

Abstract

An optical lens, a camera module (40) and an electronic device (100). The optical lens comprises a prime lens (44) and a focus lens (43). The focus lens (43) is located at an object side of the prime lens (44). The focus lens (43) comprises a motor (430), a first lens (433), and a second lens (434). The second lens (434) is located at an image side of the first lens (433). When the relative positions of the second lens (434) and the first lens (433) change, the focal power of the focus lens (43) changes. The motor (430) comprises a first drive part (431) and a second drive part (432). The first drive part (431) is connected to the first lens (433). The first drive part (431) is used for driving the first lens (433) to move in a direction perpendicular to the optical axis of the prime lens (44). The second drive part (432) is connected to the second lens (434). The second drive part (432) is used for driving the second lens (434) to move in a direction perpendicular to the optical axis of the prime lens (44). In the focusing process of the optical lens, the energy consumption of the motor (430) is relatively low.

Description

光学镜头、摄像模组及电子设备Optical lens, camera module and electronic equipment

本申请要求于2020年08月21日提交中国专利局、申请号为202010849832.6、申请名称为“光学镜头、摄像模组及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。This application claims the priority of the Chinese patent application with the application number 202010849832.6 and the application name "Optical Lens, Camera Module and Electronic Equipment" filed with the China Patent Office on August 21, 2020, the entire contents of which are incorporated herein by reference Applying.

技术领域technical field

本申请涉及到镜头领域，尤其涉及到一种光学镜头、摄像模组及电子设备。The present application relates to the field of lenses, and in particular, to an optical lens, a camera module and an electronic device.

背景技术Background technique

随着智能手机的普及和发展，手机拍照成为人们普遍使用的拍摄方式。传统手机的摄像模组包括马达和镜头。其中，在摄像模组的拍照过程中，通过马达驱动镜头沿光轴方向移动，来实现摄像模组的对焦需求。然而，在马达推动镜头移动的过程中，由于镜头的重量较重，马达需要较大的推力，导致马达的能耗较大，不利于摄像模组长时间拍摄。With the popularity and development of smart phones, mobile phone photography has become a commonly used shooting method. The camera module of a traditional mobile phone includes a motor and a lens. Wherein, during the photographing process of the camera module, the motor drives the lens to move along the direction of the optical axis, so as to realize the focusing requirement of the camera module. However, in the process that the motor drives the lens to move, due to the heavy weight of the lens, the motor requires a large thrust, resulting in high energy consumption of the motor, which is not conducive to the long-term shooting of the camera module.

发明内容SUMMARY OF THE INVENTION

本申请提供了一种在光学对焦的过程中，马达能耗较低的光学镜头、摄像模组及电子设备。The present application provides an optical lens, a camera module and an electronic device with low motor power consumption during the optical focusing process.

第一方面，本申请实施例提供了一种光学镜头。光学镜头包括定焦镜头和对焦镜头。所述对焦镜头位于所述定焦镜头的物侧。所述对焦镜头包括马达、第一透镜以及第二透镜。所述第二透镜位于所述第一透镜的像侧。其中，所述第二透镜与所述第一透镜的相对位置发生变化时，所述对焦镜头的光焦度变化。应理解，第一透镜与第二透镜的相对位置发生变化是指，第一透镜正对第二透镜的部分发生变化，和/或，第二透镜正对第一透镜的部分发生变化。其中，两个部分“正对”是指这两个部分在垂直于光学镜头的光轴方向的平面上的正投影重合。其中，当第一透镜正对第二透镜的部分发生变化时，第一透镜正对第二透镜的部分的物侧面形状、像侧面形状、厚度等因素中至少一者发生变化。第二透镜正对第一透镜的部分发生变化时，第二透镜正对第一透镜的部分的物侧面形状、像侧面形状、厚度等因素中至少一者发生变化。In a first aspect, an embodiment of the present application provides an optical lens. Optical lenses include fixed focus lenses and focus lenses. The focus lens is located on the object side of the fixed focus lens. The focusing lens includes a motor, a first lens and a second lens. The second lens is located on the image side of the first lens. Wherein, when the relative position of the second lens and the first lens changes, the optical power of the focusing lens changes. It should be understood that the change in the relative positions of the first lens and the second lens means that the part of the first lens facing the second lens changes, and/or the part of the second lens facing the first lens changes. Wherein, the "directly facing" of the two parts means that the orthographic projections of the two parts on a plane perpendicular to the optical axis direction of the optical lens coincide. Wherein, when the portion of the first lens facing the second lens changes, at least one of factors such as the shape of the object side surface, the shape of the side surface, and the thickness of the portion of the first lens facing the second lens changes. When the portion of the second lens facing the first lens changes, at least one of factors such as the shape of the object side surface, the shape of the image side surface, and the thickness of the portion of the second lens facing the first lens changes.

所述马达包括第一驱动部和第二驱动部。可以理解的是，第一驱动部包括动力源组件以及传动组件。传动组件连接于动力源组件。动力源组件带动传动组件移动。一种实施方式中，动力源组件可以包括线圈与磁铁。磁铁在线圈所产生的磁场下形成安培力。传动件组件在安培力下相对动力源组件移动。一种实施方式中，动力源组件可以包括形状记忆合金(shape memory alloys，SMA)线。当SMA线接收电流信号时，SMA线可以产生收缩力。传动件组件在该收缩力下相对动力源组件移动。一种实施方式中，动力源组件也可以包括电机以及齿条。齿条与电机的齿轮啮合。当电机转动时，电机带动齿条移动。齿条带动传动件组件移动。第二驱动部的结构可以参阅第一驱动部的结构。这里不再赘述。第二驱动部的动力源组件可以共用第一驱动部的动力源组件。另外，第二驱动部的部分传动组件也可以与第一驱动部的传动组件共用。The motor includes a first driving part and a second driving part. It can be understood that the first driving part includes a power source assembly and a transmission assembly. The transmission assembly is connected to the power source assembly. The power source assembly drives the transmission assembly to move. In one embodiment, the power source assembly may include a coil and a magnet. The magnet creates an ampere force under the magnetic field created by the coil. The drive member assembly moves relative to the power source assembly under ampere force. In one embodiment, the power source assembly may include shape memory alloys (SMA) wires. When the SMA wire receives a current signal, the SMA wire can generate a contractile force. The transmission member assembly moves relative to the power source assembly under the contraction force. In one embodiment, the power source assembly may also include a motor and a rack. The rack meshes with the gears of the motor. When the motor rotates, the motor drives the rack to move. The rack drives the transmission component to move. The structure of the second driving part can refer to the structure of the first driving part. I won't go into details here. The power source assembly of the second drive part may share the power source assembly of the first drive part. In addition, part of the transmission components of the second driving part may also be shared with the transmission components of the first driving part.

另外，所述第一驱动部连接所述第一透镜。所述第一驱动部用于驱动所述第一透镜在垂直于所述定焦镜头的光轴方向上移动。所述第二驱动部连接所述第二透镜。所述第二驱动部用于驱动所述第二透镜在垂直于所述定焦镜头的光轴方向上移动。In addition, the first drive unit is connected to the first lens. The first driving part is used for driving the first lens to move in a direction perpendicular to the optical axis of the fixed-focus lens. The second driving part is connected to the second lens. The second driving part is used for driving the second lens to move in a direction perpendicular to the optical axis of the fixed-focus lens.

在本实施例中，通过所述第一驱动部驱动所述第一透镜在垂直于所述定焦镜头的光轴方向上移动，所述第二驱动部驱动所述第二透镜在垂直于所述定焦镜头的光轴方向上移动，以实现光学镜头的对焦。一方面，本实施例的光学镜头无需通过马达带动整个镜头沿X轴方向移动。此时，马达的推力较小，马达的能耗较低，光学镜头的拍摄时长较长。另一方面，当传统的摄像模组的等效焦距大于40毫米时，传统的摄像模组为了能够在短物距的物体成像，镜头的移动行程较大。此时，传统的摄像模组在X轴方向的长度整体较大。而本实施方式的光学镜头通过对焦镜头对焦，对焦镜头无需在X轴方向移动镜头。这样，光学镜头在X轴方向的尺寸可以做得较小，从而使得光学镜头在X轴方向可以实现小型化设置。In this embodiment, the first lens is driven by the first driving part to move in a direction perpendicular to the optical axis of the fixed-focus lens, and the second driving part drives the second lens to move in a direction perpendicular to the optical axis of the fixed-focus lens. The fixed-focus lens is moved in the direction of the optical axis to realize the focusing of the optical lens. On the one hand, the optical lens of this embodiment does not need to use a motor to drive the entire lens to move along the X-axis direction. At this time, the thrust of the motor is small, the energy consumption of the motor is low, and the shooting time of the optical lens is long. On the other hand, when the equivalent focal length of the conventional camera module is greater than 40 mm, in order to be able to image an object with a short object distance, the conventional camera module has a larger moving stroke of the lens. At this time, the length of the conventional camera module in the X-axis direction is generally relatively large. However, in the optical lens of the present embodiment, the focusing lens is used for focusing, and the focusing lens does not need to move the lens in the X-axis direction. In this way, the size of the optical lens in the X-axis direction can be made smaller, so that the optical lens can be miniaturized in the X-axis direction.

一种实施方式中，所述第一透镜在第一位置，所述第二透镜在第二位置时，所述对焦透镜处于无光焦度状态。此时，第一透镜与第二透镜相当于一个平板玻璃。这样，当平行的环境光线依次穿过第一透镜与第二透镜之后，环境光线依然平行出射。In one embodiment, when the first lens is in the first position and the second lens is in the second position, the focusing lens is in a no-power state. At this time, the first lens and the second lens are equivalent to one flat glass. In this way, after the parallel ambient light rays pass through the first lens and the second lens in sequence, the ambient light rays still exit in parallel.

所述第一透镜自所述第一位置沿第一方向移动，所述第二透镜自所述第二位置沿第二方向移动，所述对焦镜头处于正光焦度状态，也即对焦镜头具有正的焦距。当平行的环境光线依次穿过第一透镜与第二透镜之后，平行的环境光线汇聚至一个点。这样，第一透镜与第二透镜具有汇聚环境光线的效果。The first lens moves in the first direction from the first position, the second lens moves in the second direction from the second position, and the focusing lens is in a positive power state, that is, the focusing lens has a positive power. focal length. After the parallel ambient light rays pass through the first lens and the second lens in sequence, the parallel ambient light rays converge to a point. In this way, the first lens and the second lens have the effect of converging ambient light.

所述第一透镜自所述第一位置沿所述第二方向移动，所述第二透镜自所述第二位置沿所述第一方向移动，所述对焦镜头处于负光焦度状态，对焦镜头具有负的焦距。所述第一方向与所述第二方向相反。此时，当平行的环境光线依次穿过第一透镜与第二透镜之后，平行的环境光线未汇聚于一个点，且向外发散。The first lens moves along the second direction from the first position, the second lens moves along the first direction from the second position, and the focusing lens is in a state of negative refractive power, focusing on The lens has a negative focal length. The first direction is opposite to the second direction. At this time, after the parallel ambient light rays pass through the first lens and the second lens in sequence, the parallel ambient light rays do not converge at one point and diverge outward.

可以理解的是，通过设置所述第一透镜沿第一方向以及第二方向移动，其中所述第一方向与所述第二方向相反，从而使得第一透镜的移动方向较为简单。这样，第一驱动部的结构设计也较为简单，容易实现。另外，通过设置所述第二透镜沿第一方向以及第二方向移动，也可以使得第二透镜的移动方向较为简单。这样，第二驱动部的结构设计也较为简单，容易实现。It can be understood that, by setting the first lens to move along a first direction and a second direction, wherein the first direction is opposite to the second direction, the moving direction of the first lens is simplified. In this way, the structural design of the first driving part is also relatively simple and easy to implement. In addition, by setting the second lens to move along the first direction and the second direction, the moving direction of the second lens can also be simplified. In this way, the structural design of the second driving part is also relatively simple and easy to implement.

一种实施方式中，所述第一透镜自所述第一位置沿所述第一方向移动的行程在1毫米至4毫米的范围内。In one embodiment, the travel of the first lens moving from the first position along the first direction is in the range of 1 mm to 4 mm.

可以理解的是，当第一透镜自第一位置沿所述第一方向上移动的行程在该尺寸范围内时，一方面，可以避免第一透镜因移动行程较短而导致第一透镜的弯曲程度显著增大，从而有利于第一透镜的制造，且不容易加大与第二透镜碰撞的风险，另一方面，可以避免第一透镜因移动行程过长而影响马达的控制精度，以及显著增大光学镜头体积。It can be understood that, when the moving stroke of the first lens from the first position along the first direction is within this size range, on the one hand, the bending of the first lens caused by the short moving stroke of the first lens can be avoided. The degree is significantly increased, which is beneficial to the manufacture of the first lens, and it is not easy to increase the risk of collision with the second lens. Increase the size of the optical lens.

一种实施方式中，第二透镜自第二位置沿第二方向上移动的行程在1毫米至4毫米的范围内。In one embodiment, the travel of the second lens moving in the second direction from the second position is in the range of 1 mm to 4 mm.

一种实施方式中，第一透镜自第一位置沿第二方向上移动的行程在1毫米至4毫米的范围内。可以理解的是，当第一透镜自第一位置沿第二方向上移动的行程在该尺寸范围内时，一方面，可以避免第一透镜因移动行程较短而导致第一透镜的弯曲程度显著增大，从而有利于第一透镜的制造，且不容易加大与第二透镜碰撞的风险，另一方面，可以避免第一透镜因移动行程过长而影响马达的控制精度，以及显著增大光学镜头体积。In one embodiment, the travel of the first lens moving in the second direction from the first position is in the range of 1 mm to 4 mm. It can be understood that, when the stroke of the first lens moving from the first position in the second direction is within this size range, on the one hand, it can be avoided that the first lens is significantly curved due to the short moving stroke. increase, so as to facilitate the manufacture of the first lens, and it is not easy to increase the risk of collision with the second lens. Optical lens volume.

在其他实施方式中，第二透镜自第二位置沿第一方向移动的行程在1毫米至4毫米的范围内。In other embodiments, the travel of the second lens in the first direction from the second position is in the range of 1 mm to 4 mm.

一种实施方式中，所述第一透镜的物侧面和像侧面均为自由曲面，所述第二透镜的物侧面和像侧面均为自由曲面。这样，光学镜头的光学设计的自由度能够显著增大。此时，在光学镜头采集环境光线的过程中，第一透镜与第二透镜能够优化减小像差，进而提高光学镜头的成像质量。In one embodiment, the object side and the image side of the first lens are both free-form surfaces, and the object side and the image side of the second lens are both free-form surfaces. In this way, the degree of freedom in the optical design of the optical lens can be significantly increased. At this time, in the process of collecting ambient light by the optical lens, the first lens and the second lens can optimize and reduce aberrations, thereby improving the imaging quality of the optical lens.

一种实施方式中，所述第一透镜的物侧面和像侧面均为自由曲面。所述第二透镜的物侧面。所述第二透镜的像侧面为平面或者球面。此时，对焦镜头具有三个自由曲面。这样，光学镜头的光学设计的自由度也能够显著增大。此时，在光学镜头采集环境光线的过程中，第一透镜与第二透镜能够优化减小像差，进而提高光学镜头的成像质量。In one embodiment, both the object side surface and the image side surface of the first lens are free-form surfaces. the object side of the second lens. The image side surface of the second lens is a plane or a spherical surface. At this time, the focusing lens has three free-form surfaces. In this way, the degree of freedom of the optical design of the optical lens can also be significantly increased. At this time, in the process of collecting ambient light by the optical lens, the first lens and the second lens can optimize and reduce aberrations, thereby improving the imaging quality of the optical lens.

一种实施方式中，所述自由曲面满足：In one embodiment, the free-form surface satisfies:

其中，z为所述自由曲面的矢高；r为在所述对焦镜头的光轴方向上的半径高度；c为曲率半径；k为圆锥系数；N为级数中多项式系数的总数；E _i(x,y)是x，y方向的幂级数；A _i是多项式系数；n为正整数；a与b为偶数。 Wherein, z is the sag height of the free-form surface; r is the radius height in the optical axis direction of the focusing lens; c is the radius of curvature; k is the conic coefficient; N is the total number of polynomial coefficients in the series; E _i ( x, y) is the power series in the x, y direction; A _i is the polynomial coefficient; n is a positive integer; a and b are even numbers.

这样，由于x的幂和y的幂只使用偶次项,自由曲面可以关于垂直于光轴方向的平面对称。In this way, since only even terms are used for the power of x and the power of y, the free-form surface can be symmetric about the plane perpendicular to the direction of the optical axis.

一种实施方式中，在所述定焦镜头的光轴方向上，所述第一透镜与所述第二透镜之间的距离在0.1毫米至2毫米的范围内。In an embodiment, in the direction of the optical axis of the fixed-focus lens, the distance between the first lens and the second lens is in the range of 0.1 mm to 2 mm.

可以理解的是，通过将第一透镜与第二透镜之间的距离设置在该尺寸范围内，从而既可以避免第一透镜与第二透镜之间的距离因过小而增大第一透镜与第二透镜在移动过程中发生碰撞的风险，又可以避免第一透镜与第二透镜之间的距离因过大而导致空气间隙引起的像差。另外，当对焦镜头的物侧设置有三棱镜时，第一透镜与第二透镜之间的距离不容易因过大而导致三棱镜的尺寸增大，进而有利于三棱镜的制造以及小型化设置。It can be understood that by setting the distance between the first lens and the second lens within this size range, it is possible to avoid that the distance between the first lens and the second lens is too small to increase the distance between the first lens and the second lens. The risk of collision of the second lens during the movement process can also avoid the aberration caused by the air gap caused by the distance between the first lens and the second lens being too large. In addition, when a triangular prism is disposed on the object side of the focusing lens, the distance between the first lens and the second lens is not too large to cause an increase in the size of the triangular prism, which is favorable for the manufacture and miniaturization of the triangular prism.

一种实施方式中，在所述定焦镜头的光轴方向上，所述第二透镜与所述定焦镜头之间的距离在0.1毫米至5毫米的范围内。In one embodiment, in the direction of the optical axis of the fixed-focus lens, the distance between the second lens and the fixed-focus lens is in the range of 0.1 mm to 5 mm.

可以理解的是，通过将第二透镜与定焦镜头之间的距离设置在该尺寸范围内，从而避免第二透镜与定焦镜头之间的距离因过小而增大第二透镜与定焦镜头间的碰撞风险。当对焦镜头的物侧设置有三棱镜时，第二透镜与定焦镜头之间的距离不容易因过大而导致三棱镜的尺寸显著增大，进而有利于三棱镜的制造以及小型化设置。It can be understood that by setting the distance between the second lens and the fixed-focus lens within this size range, it is avoided that the distance between the second lens and the fixed-focus lens is too small to increase the second lens and the fixed-focus lens. Risk of collision between lenses. When a triangular prism is disposed on the object side of the focusing lens, the distance between the second lens and the fixed-focus lens is not likely to be too large to cause a significant increase in the size of the triangular prism, thereby facilitating the manufacture and miniaturization of the triangular prism.

一种实施方式中，所述第一透镜的阿贝数v _f1满足：20<v _f1<60。可以理解的是，当第一透镜的阿贝数v _f1满足该尺寸时，第一透镜引起的成像色差可以显著减小。 In an embodiment, the Abbe number v _f1 of the first lens satisfies: 20<v _f1 <60. It can be understood that when the Abbe number v _f1 of the first lens satisfies this size, the imaging chromatic aberration caused by the first lens can be significantly reduced.

一种实施方式中，第二透镜的阿贝数v _f2满足：20≤v _f2≤60。例如，v _f2可以为20、22、27、30、40、50、52、56或者60。可以理解的是，当第二透镜的阿贝数v _f2满足该尺寸时，第二透镜引起的成像色差可以显著减小。 In one embodiment, the Abbe number v _f2 of the second lens satisfies: 20≦v _f2 ≦60. For example, v _f2 can be 20, 22, 27, 30, 40, 50, 52, 56, or 60. It can be understood that when the Abbe number v _f2 of the second lens satisfies this size, the imaging chromatic aberration caused by the second lens can be significantly reduced.

一种实施方式中，摄像模组的成像距离的范围为10毫米至无穷远。可以理解的是，相较于传统摄像模组的最小成像距离0.5米，本实施方式的光学镜头的最小成像距离可以达到10毫米。此时，本实施方式的光学镜头的成像范围更大，实用性更广，用户的体验性更佳。In one embodiment, the imaging distance of the camera module ranges from 10 mm to infinity. It can be understood that, compared with the minimum imaging distance of the traditional camera module of 0.5 meters, the minimum imaging distance of the optical lens of this embodiment can reach 10 mm. At this time, the optical lens of this embodiment has a larger imaging range, wider practicability, and better user experience.

一种实施方式中，第一透镜与第二透镜可以为塑料材质、玻璃材质或者其它的复合材料。其中，塑料材质能够容易的制得各种形状复杂的透镜结构。玻璃材质的透镜的折射率n1满足：1.50≤n1≤1.90，其相对于塑料透镜的折射率范围(1.55-1.65)来说，折射率可选择的范围较大，更容易得到较薄但性能较好的玻璃透镜，有利于减小对焦镜头的轴上厚度，不容易制得形状复杂的透镜结构。因此，本申请的一些实施方式中，考虑制作成本、效率以及光学效果，根据需要合理的搭配不同透镜的具体应用材质。In one embodiment, the first lens and the second lens may be made of plastic material, glass material or other composite materials. Among them, the plastic material can easily produce various lens structures with complex shapes. The refractive index n1 of the lens made of glass satisfies: 1.50≤n1≤1.90. Compared with the refractive index range of the plastic lens (1.55-1.65), the refractive index can be selected in a larger range, and it is easier to obtain thinner but better performance. A good glass lens is conducive to reducing the on-axis thickness of the focusing lens, and it is not easy to produce a lens structure with a complex shape. Therefore, in some embodiments of the present application, considering the manufacturing cost, efficiency and optical effect, the specific application materials of different lenses are reasonably matched as required.

一种实施方式中，所述光学镜头具有成像面，所述定焦镜头靠近所述对焦镜头的端部与所述成像面之间的距离为D。所述定焦镜头在无穷远对焦时的光学总长为TTL。D与TTL满足：TTL-10毫米≤D≤TTL+10毫米。In one embodiment, the optical lens has an imaging surface, and the distance between the end of the fixed-focus lens close to the focusing lens and the imaging surface is D. The total optical length of the fixed-focus lens when focusing at infinity is TTL. D and TTL meet: TTL-10mm≤D≤TTL+10mm.

可以理解的是，通过设置定焦镜头与成像面之间的距离D满足上述关系时，从而既可以避免定焦镜头与成像面之间的距离因过大而影响实际成像时的光圈值以及增大光学镜头的体积，又可以避免定焦镜头与成像面之间的距离D因过小而需要对焦镜头提供更大的光焦度，进而有利于扩展更大的成像范围。It can be understood that when the above relationship is satisfied by setting the distance D between the fixed-focus lens and the imaging surface, it can avoid that the distance between the fixed-focus lens and the imaging surface is too large to affect the aperture value and increase in the actual imaging. The volume of the large optical lens can also avoid that the distance D between the fixed focal lens and the imaging surface needs to be provided by the focusing lens to provide a larger focal power because the distance D between the fixed focal lens and the imaging surface is too small, which is conducive to expanding a larger imaging range.

另外，当D的尺寸在上述范围内时，对焦镜头均能够对不同物距的物体进行对焦，从而使得定焦镜头对不同物距的物体清晰成像。特别是，当TTL毫米＜D≤TTL+10毫米时，传统的光学镜头在无穷远处较难对焦，此时，传统的光学镜头在无穷远处很难实现清晰成像。故而，传统的光学镜头的D的尺寸范围很难设置在上述范围内。而在本实施例，当光学镜头在无穷远处对焦时，对焦镜头的光焦度可以切换至负光焦度，此时，无穷远处的物体能够被定焦镜头清晰地成像。这样，本实施方式的光学镜头的适用性较广，用户的体验性更佳。In addition, when the size of D is within the above range, the focusing lens can focus on objects with different object distances, so that the fixed-focus lens can clearly image objects with different object distances. In particular, when TTL mm<D≤TTL+10 mm, it is difficult for traditional optical lenses to focus at infinity. At this time, it is difficult for traditional optical lenses to achieve clear imaging at infinity. Therefore, it is difficult to set the size range of D of the conventional optical lens within the above range. In this embodiment, when the optical lens is focused at infinity, the focal power of the focusing lens can be switched to a negative focal power, and at this time, an object at infinity can be clearly imaged by the fixed-focus lens. In this way, the optical lens of this embodiment has wider applicability and better user experience.

在本实施例中，当D与TTL在不同的关系中，对焦镜头可以在不同场景下采用不同的光焦度状态来实现对焦，以使定焦镜头对不同物距的物体清晰成像。In this embodiment, when D and TTL are in different relationships, the focusing lens can use different focal power states to achieve focusing in different scenarios, so that the fixed-focus lens can clearly image objects with different object distances.

一种实施方式中，当D与TTL满足：TTL毫米＜D≤TTL+10毫米时，通过将对焦镜头的光焦度自负光焦度向正光焦度调节，从而使得定焦镜头能够对不同物距的物体清晰成。In one embodiment, when D and TTL satisfy: TTL mm<D≤TTL+10 mm, the focus lens is adjusted from negative power to positive power, so that the fixed focus lens can focus on different objects. objects at a distance are clearly visible.

一种实施方式中，当D与TTL满足：D＝TTL时，通过将对焦镜头的光焦度自无光焦度向正光焦度调节，从而使得定焦镜头能够对不同物距的物体清晰成像。In one embodiment, when D and TTL satisfy: D=TTL, by adjusting the focal power of the focusing lens from no focal power to positive focal power, the fixed-focus lens can clearly image objects with different object distances. .

一种实施方式中，当D与TTL满足：TTL-10毫米≤D＜TTL毫米时，通过改变对焦镜头的正光焦度的大小，从而使得定焦镜头能够对不同物距的物体清晰成像。In one embodiment, when D and TTL satisfy: TTL-10 mm≤D<TTL mm, by changing the size of the positive focal power of the focusing lens, the fixed-focus lens can clearly image objects with different object distances.

一种实施方式中，所述光学镜头还包括外壳、棱镜马达及反射件。所述对焦镜头与所述定焦镜头均设置于所述外壳。所述棱镜马达设置于所述外壳，且位于所述对焦镜头的物侧。所述反射件连接于所述棱镜马达，且相对所述棱镜马达转动。所述反射件用于反射环境光线，以使环境光线传播至所述对焦镜头。In one embodiment, the optical lens further includes a housing, a prism motor and a reflector. Both the focusing lens and the fixed-focus lens are disposed on the housing. The prism motor is disposed on the housing and located on the object side of the focusing lens. The reflector is connected to the prism motor and rotates relative to the prism motor. The reflector is used for reflecting ambient light, so that the ambient light is transmitted to the focusing lens.

可以理解的是，通过将棱镜马达、对焦镜头、定焦镜头设置于所述外壳，此时，外壳、棱镜马达、对焦镜头以及定焦镜头形成成一个整体，光学镜头的整体性较高。这样，当光学镜头应用于摄像模组以及电子设备时，摄像模组与电子设备更加简洁，整体性更佳。It can be understood that by arranging the prism motor, focus lens, and fixed focus lens in the housing, at this time, the housing, prism motor, focus lens, and fixed focus lens form a whole, and the integrity of the optical lens is high. In this way, when the optical lens is applied to the camera module and the electronic device, the camera module and the electronic device are more concise and the integrity is better.

在本实施例中，利用三棱镜将沿Z轴方向传播的环境光线反射至沿X轴方向传播。这样，接收沿X轴方向传播的环境光线的摄像模组的器件可以沿X轴方向排布。由于电子设备在X轴方向的尺寸较大，摄像模组内的器件在X轴方向的排布更加的灵活，更加简单。In this embodiment, the ambient light propagating along the Z-axis direction is reflected to propagate along the X-axis direction by using a triangular prism. In this way, the components of the camera module receiving ambient light propagating along the X-axis direction can be arranged along the X-axis direction. Due to the large size of the electronic device in the X-axis direction, the arrangement of the devices in the camera module in the X-axis direction is more flexible and simpler.

另外，光学镜头在采集环境光线的过程中容易发生抖动，此时，环境光线的传输路径容易发生偏折，从而导致光学镜头拍摄的图像不佳。在本实施例中，通过将所述反射件连接于所述棱镜马达，且相对所述棱镜马达转动，从而当环境光线的传输路径发生偏折时，棱镜马达能够驱动三棱镜转动，从而利用三棱镜来调整环境光线的传输路径，减少或者避免环境光线的传输路径发生偏折，进而保证光学镜头具有较佳的拍摄效果。故而，三棱镜与棱镜马达可以起到光学防抖的效果。In addition, the optical lens is prone to jitter in the process of collecting ambient light, and at this time, the transmission path of the ambient light is prone to deflection, resulting in poor images captured by the optical lens. In this embodiment, by connecting the reflector to the prism motor and rotating relative to the prism motor, when the transmission path of ambient light is deflected, the prism motor can drive the triangular prism to rotate, so that the triangular prism can be used to Adjust the transmission path of ambient light to reduce or avoid deflection of the transmission path of ambient light, thereby ensuring that the optical lens has a better shooting effect. Therefore, the triangular prism and the prism motor can play an optical anti-shake effect.

一种实施方式中，所述外壳包括上盖以及底座。所述上盖安装于所述底座。所述上盖与所述底座围出所述外壳的内部。所述棱镜马达、所述对焦镜头与所述定焦镜头均位于所述外壳的内部，且均设置于所述底座。所述上盖设有第一透光孔。所述第一透光孔将所述外壳的外部连通至所述外壳的内部。所述环境光线经所述第一透光孔传播至所述反射件。所述底座开设有第二透光孔。所述第二透光孔将所述外壳的内部连通至所述外壳的外部，所述第二透光孔正对于所述定焦镜头的出光侧。In one embodiment, the housing includes an upper cover and a base. The upper cover is mounted on the base. The upper cover and the base enclose the interior of the casing. The prism motor, the focusing lens and the fixed-focus lens are all located inside the casing and are all disposed on the base. The upper cover is provided with a first light-transmitting hole. The first light-transmitting hole communicates the outside of the casing to the inside of the casing. The ambient light is transmitted to the reflector through the first light-transmitting hole. The base is provided with a second light-transmitting hole. The second light-transmitting hole communicates the inside of the casing to the outside of the casing, and the second light-transmitting hole is opposite to the light-emitting side of the fixed-focus lens.

可以理解的是，通过将棱镜马达、对焦镜头、定焦镜头设置所述外壳的内部，此时，外壳、棱镜马达、对焦镜头、定焦镜头成一个整体，从而显著提高光学镜头的整体性。这样，当光学镜头应用于摄像模组以及电子设备时，摄像模组与电子设备更加简洁，整体性更佳。It can be understood that by arranging the prism motor, focus lens, and fixed focus lens inside the housing, at this time, the housing, prism motor, focus lens, and fixed focus lens are integrated, thereby significantly improving the integrity of the optical lens. In this way, when the optical lens is applied to the camera module and the electronic device, the camera module and the electronic device are more concise and the integrity is better.

一种实施方式中，所述外壳还包括固定台，所述固定台位于所述外壳的内部，且固定于所述底座，所述固定台设置有限位槽，所述定焦镜头固定于所述限位槽内。可以理解的是，通过将定焦镜头设置于限位槽内，从而利用限位槽的槽壁对定焦镜头进行限位，进而提高定焦镜头的稳定性。In one embodiment, the housing further includes a fixing table, the fixing table is located inside the housing and is fixed to the base, the fixing table is provided with a limiting groove, and the fixed-focus lens is fixed on the base. in the limit slot. It can be understood that by arranging the fixed-focus lens in the limiting groove, the fixed-focus lens is limited by the groove wall of the limiting groove, thereby improving the stability of the fixed-focus lens.

第二方面，本申请实施例提供了一种摄像模组。摄像模组包括模组电路板、感光芯片、滤光片以及如上所述光学镜头。所述模组电路板位于所述定焦镜头的像侧。所述感光芯片固定于所述模组电路板朝向所述定焦镜头的一侧。所述感光芯片用于采集穿过所述定焦镜头的环境光线。所述滤光片位于所述定焦镜头与所述感光芯片之间。可以理解的是，当环境光线依次穿过对焦镜头、定焦镜头，并传输至滤光片时，滤光片可用于过滤环境光线中的杂光，并使过滤后的环境光线传播至感光芯片，从而保证摄像模组拍摄图像具有较佳的清晰度。In a second aspect, an embodiment of the present application provides a camera module. The camera module includes a module circuit board, a photosensitive chip, an optical filter, and an optical lens as described above. The module circuit board is located on the image side of the fixed-focus lens. The photosensitive chip is fixed on the side of the module circuit board facing the fixed-focus lens. The photosensitive chip is used for collecting ambient light passing through the fixed-focus lens. The filter is located between the fixed-focus lens and the photosensitive chip. It can be understood that when the ambient light passes through the focusing lens, the fixed-focus lens, and is transmitted to the filter in sequence, the filter can be used to filter the stray light in the ambient light, and make the filtered ambient light propagate to the photosensitive chip. , so as to ensure that the image captured by the camera module has better clarity.

另外，当能耗较低、X轴方向可以实现小型化的光学镜头应用于摄像模组时，摄像模组能耗也较低，在X轴方向也可以实现小型化设置。In addition, when the optical lens with low energy consumption and miniaturization in the X-axis direction is applied to the camera module, the energy consumption of the camera module is also low, and miniaturization can also be achieved in the X-axis direction.

第三方面，本申请实施例提供了一种电子设备，该电子设备可以为手机和平板电脑等。该电子设备包括壳体以及如上述的摄像模组，所述摄像模组安装于所述壳体。In a third aspect, an embodiment of the present application provides an electronic device, and the electronic device may be a mobile phone, a tablet computer, or the like. The electronic device includes a casing and the above-mentioned camera module, wherein the camera module is mounted on the casing.

可以理解的是，当能耗较低、X轴方向可以实现小型化的摄像模组应用于电子设备时，电子设备的能耗也较低，在X轴方向也可以实现小型化设置。It can be understood that when a camera module with low energy consumption and miniaturization in the X-axis direction is applied to an electronic device, the energy consumption of the electronic device is also lower, and miniaturization can also be achieved in the X-axis direction.

附图说明Description of drawings

图1是本申请实施例提供的电子设备的结构示意图；1 is a schematic structural diagram of an electronic device provided by an embodiment of the present application;

图2是图1所示的电子设备的部分分解示意图；Fig. 2 is a partial exploded schematic view of the electronic device shown in Fig. 1;

图3是图1所示的电子设备在A-A线处的部分剖面示意图；3 is a partial cross-sectional schematic view of the electronic device shown in FIG. 1 at line A-A;

图4是图1所示的电子设备的摄像模组的结构示意图；Fig. 4 is the structural representation of the camera module of the electronic device shown in Fig. 1;

图5是图4所示的摄像模组的部分分解示意图；5 is a partially exploded schematic view of the camera module shown in FIG. 4;

图6是图4所示的摄像模组的部分结构示意图；Fig. 6 is the partial structure schematic diagram of the camera module shown in Fig. 4;

图7是图5所示的摄像模组的对焦镜头处于一种状态的示意图；Fig. 7 is the schematic diagram that the focusing lens of the camera module shown in Fig. 5 is in a state;

图8是图5所示的摄像模组的对焦镜头处于另一种状态的示意图；8 is a schematic diagram of the focusing lens of the camera module shown in FIG. 5 in another state;

图9a是图5所示的摄像模组的对焦镜头处于再一种状态的示意图；Fig. 9a is the schematic diagram that the focusing lens of the camera module shown in Fig. 5 is in another state;

图9b是图5所示的摄像模组的部分成像示意图；Fig. 9b is a partial imaging schematic diagram of the camera module shown in Fig. 5;

图10a是图5所示的第一透镜与第二透镜的一种实施方式的结构示意图；10a is a schematic structural diagram of an embodiment of the first lens and the second lens shown in FIG. 5;

图10b是图10a所示的第一透镜与第二透镜所对应的摄像模组在物距为2米，视场为0的MTF曲线图；Fig. 10b is an MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in Fig. 10a when the object distance is 2 meters and the field of view is 0;

图10c是图10a所示的第一透镜与第二透镜所对应的摄像模组在物距为2米，视场为0.8的MTF曲线图；Figure 10c is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in Figure 10a at an object distance of 2 meters and a field of view of 0.8;

图10d是图10a所示的第一透镜与第二透镜所对应的摄像模组在物距为1米，视场为0的MTF曲线图；FIG. 10d is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in FIG. 10a when the object distance is 1 meter and the field of view is 0;

图10e是图10a所示的第一透镜与第二透镜所对应的摄像模组在物距为1米，视场为0.8的MTF曲线图；FIG. 10e is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in FIG. 10a at an object distance of 1 meter and a field of view of 0.8;

图11a是图5所示的第一透镜与第二透镜的另一种实施方式的结构示意图；FIG. 11a is a schematic structural diagram of another embodiment of the first lens and the second lens shown in FIG. 5;

图11b是图11a所示的第一透镜与第二透镜所对应的摄像模组在物距为2米，视场为0的MTF曲线图；Fig. 11b is an MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in Fig. 11a when the object distance is 2 meters and the field of view is 0;

图11c是图11a所示的第一透镜与第二透镜所对应的摄像模组在物距为2米，视场为0.8的MTF曲线图；Fig. 11c is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in Fig. 11a at an object distance of 2 meters and a field of view of 0.8;

图11d是图11a所示的第一透镜与第二透镜所对应的摄像模组在物距为1米，视场为0的MTF曲线图；FIG. 11d is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in FIG. 11a when the object distance is 1 meter and the field of view is 0;

图11e是图11a所示的第一透镜与第二透镜所对应的摄像模组在物距为1米，视场为0.8的MTF曲线图；FIG. 11e is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in FIG. 11a at an object distance of 1 meter and a field of view of 0.8;

图12a是图5所示的第一透镜与第二透镜的再一种实施方式的结构示意图；12a is a schematic structural diagram of still another embodiment of the first lens and the second lens shown in FIG. 5;

图12b是图12a所示的第一透镜与第二透镜所对应的摄像模组在物距为2米，视场为0的MTF曲线图；Fig. 12b is an MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in Fig. 12a when the object distance is 2 meters and the field of view is 0;

图12c是图12a所示的第一透镜与第二透镜所对应的摄像模组在物距为2米，视场为0.8的MTF曲线图；Figure 12c is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in Figure 12a at an object distance of 2 meters and a field of view of 0.8;

图12d是图12a所示的第一透镜与第二透镜所对应的摄像模组在物距为1米，视场为0的MTF曲线图；FIG. 12d is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in FIG. 12a when the object distance is 1 meter and the field of view is 0;

图12e是图12a所示的第一透镜与第二透镜所对应的摄像模组在物距为1米，视场为0.8的MTF曲线图。FIG. 12e is a MTF curve diagram of the camera module corresponding to the first lens and the second lens shown in FIG. 12a when the object distance is 1 meter and the field of view is 0.8.

具体实施方式detailed description

为方便理解本申请实施例提供的光学镜头组，对本申请中涉及到的英文简写和有关名词代表的含义：For the convenience of understanding the optical lens set provided by the embodiments of the present application, the meanings of the English abbreviations and related nouns involved in the present application are represented:

光轴，是一条经过各个透镜的中心的轴线。The optical axis is an axis passing through the center of each lens.

物侧面，以透镜为界，被摄物体所在一侧为物侧，透镜靠近物侧的表面称为物侧面。The object side, with the lens as the boundary, the side where the object is located is the object side, and the surface of the lens close to the object side is called the object side.

像侧面，以透镜为界，被摄物体的图像所在的一侧为像侧，透镜靠近像侧的表面称为像侧面。The image side, with the lens as the boundary, the side where the image of the subject is located is the image side, and the surface of the lens close to the image side is called the image side.

正光焦度，也可以称为正折光力，表示透镜有正的焦距。Positive refractive power, also known as positive refractive power, means that the lens has a positive focal length.

负光焦度，也可以称为负折光力，表示透镜有负的焦距。Negative power, also known as negative refractive power, means that the lens has a negative focal length.

焦距(focal length)，也称为焦长，是光学***中衡量光的聚集或发散的度量方式，指无限远的景物通过透镜或透镜组在焦平面结成清晰影像时，透镜或透镜组的光学中心至焦平面的垂直距离。从实用的角度可以理解为物体在无限远时镜头中心至成像平面的距离。对于定焦镜头来说，其光学中心的位置是固定不变的。Focal length (focal length), also known as focal length, is a measure of the concentration or divergence of light in an optical system. The vertical distance from the optical center to the focal plane. From a practical point of view, it can be understood as the distance from the center of the lens to the imaging plane when the object is at infinity. For a fixed focal length lens, the position of its optical center is fixed.

对焦，也叫对光、聚焦。通过照相机对焦机构变动物距和相距的位置，使被拍物成像清晰的过程就是对焦。Focus, also known as light, focus. Focusing is the process of changing the distance and position of the object through the camera focusing mechanism to make the image of the object clear.

视场角(field of view，FOV)，在光学仪器中，以光学仪器的镜头为顶点，以被测目标的物像可通过镜头的最大范围的两条边缘构成的夹角，称为视场角。视场角的大小决定了光学仪器的视野范围，视场角越大，视野就越大，光学倍率就越小。The field of view (FOV), in optical instruments, takes the lens of the optical instrument as the vertex, and the angle formed by the two edges of the maximum range of the object image of the measured target that can pass through the lens is called the field of view. Horn. The size of the field of view determines the field of view of the optical instrument. The larger the field of view, the larger the field of view and the smaller the optical magnification.

光圈，是用来控制光线透过镜头的光量的装置，它通常是在镜头内。表达光圈大小可以用F数(符号：Fno)表示。Aperture, a device used to control the amount of light that passes through a lens, usually inside the lens. An F-number (symbol: Fno) can be used to express the aperture size.

光学总长(total track length，TTL)，是指从物侧指向像侧的方向，光学镜头的第一透镜的物侧面至成像面的距离。The total track length (TTL) refers to the distance from the object side of the first lens of the optical lens to the imaging surface in the direction from the object side to the image side.

主光线(主光束)，光线由物的边缘出射，通过孔径光阑的中心最后到达像的边缘的光束。The chief ray (principal beam) is the beam that exits from the edge of the object, passes through the center of the aperture stop, and finally reaches the edge of the image.

子午面，光轴外物点的主光线(主光束)与光轴所构成的平面，称为子午面。The meridian plane, the plane formed by the chief ray (main beam) of the object point outside the optical axis and the optical axis, is called the meridional plane.

弧矢面，过光轴外物点的主光线(主光束)，并与子午面垂直的平面，称为弧矢面。The sagittal plane, the chief ray (principal beam) passing through the object point outside the optical axis, and the plane perpendicular to the meridional plane, is called the sagittal plane.

阿贝数，即色散系数，是光学材料在不同波长下的折射率的差值比，代表材料色散程度大小。Abbe's number, that is, dispersion coefficient, is the difference ratio of the refractive index of optical materials at different wavelengths, and represents the degree of dispersion of materials.

首先，下文将结合相关附图具体介绍电子设备以及摄像模组的具体结构。First, the specific structures of the electronic device and the camera module will be described in detail below with reference to the related drawings.

请参阅图1，图1是本申请实施例提供的电子设备100的结构示意图。电子设备100可以为手机、平板电脑(tablet personal computer)、膝上型电脑(laptop computer)、个人数码助理(personal digital assistant，PDA)、照相机、个人计算机、笔记本电脑、车载设备、可穿戴设备、增强现实(augmented reality，AR)眼镜、AR头盔、虚拟现实(virtual reality，VR)眼镜或者VR头盔、或者具有拍照及摄像功能的其他形态的设备。图1所示实施例的电子设备100以手机为例进行阐述。Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of an electronic device 100 provided by an embodiment of the present application. The electronic device 100 may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a camera, a personal computer, a notebook computer, an in-vehicle device, a wearable device, Augmented reality (AR) glasses, AR helmets, virtual reality (VR) glasses or VR helmets, or other forms of equipment with photography and videography functions. The electronic device 100 of the embodiment shown in FIG. 1 is described by taking a mobile phone as an example.

请参阅图2，并结合图1所示，图2是图1所示的电子设备100的部分分解示意图。电子设备100包括壳体10、屏幕20、主机电路板30及摄像模组40。需要说明的是，图1、图2以及下文相关附图仅示意性的示出了电子设备100包括的一些部件，这些部件的实际形状、实际大小、实际位置和实际构造不受图1、图2以及下文各附图限定。此外，当电子设备100为一些其他形态的设备时，电子设备100也可以不包括屏幕20以及主机电路板30。Please refer to FIG. 2 in conjunction with FIG. 1 . FIG. 2 is a partial exploded schematic diagram of the electronic device 100 shown in FIG. 1 . The electronic device 100 includes a casing 10 , a screen 20 , a host circuit board 30 and a camera module 40 . It should be noted that, FIGS. 1 , 2 and the following related drawings only schematically show some components included in the electronic device 100 , and the actual shapes, actual sizes, actual positions and actual structures of these components are not affected by those shown in FIGS. 1 and 10 . 2 and the accompanying drawings below. In addition, when the electronic device 100 is some other device, the electronic device 100 may also not include the screen 20 and the host circuit board 30 .

另外，为了便于描述，定义电子设备100的宽度方向为X轴。电子设备100的长度方向为Y轴。电子设备100的厚度方向为Z轴。可以理解的是，电子设备100的坐标系设置可以根据具体需要灵活设置。In addition, for convenience of description, the width direction of the electronic device 100 is defined as the X axis. The length direction of the electronic device 100 is the Y axis. The thickness direction of the electronic device 100 is the Z axis. It can be understood that, the coordinate system setting of the electronic device 100 can be flexibly set according to specific needs.

其中，壳体10包括边框11以及后盖12。后盖12固定于边框11的一侧。一种实施方式中，后盖12通过粘胶固定连接于边框11。在另一种实施方式中，后盖12与边框11形成一体成型结构，即后盖12与边框11为一个整体结构。The housing 10 includes a frame 11 and a back cover 12 . The back cover 12 is fixed on one side of the frame 11 . In one embodiment, the back cover 12 is fixedly connected to the frame 11 by adhesive. In another embodiment, the back cover 12 and the frame 11 form an integral structure, that is, the back cover 12 and the frame 11 are an integral structure.

在其他实施例中，壳体10也可以包括中板(图未示)。中板连接于边框11的内表面。中板与后盖12相对且间隔设置。In other embodiments, the housing 10 may also include a middle plate (not shown). The middle plate is connected to the inner surface of the frame 11 . The middle plate is opposite to and spaced apart from the rear cover 12 .

另外，屏幕20固定于边框11的另一侧。此时，屏幕20与后盖12相对设置。屏幕20、边框11与后盖12共同围出电子设备100的内部。电子设备100的内部可用于放置电子设备100的器件，例如电池、受话器以及麦克风等。In addition, the screen 20 is fixed on the other side of the frame 11 . At this time, the screen 20 is disposed opposite to the back cover 12 . The screen 20 , the frame 11 and the back cover 12 together enclose the interior of the electronic device 100 . The interior of the electronic device 100 may be used to place components of the electronic device 100 , such as a battery, a receiver, and a microphone.

在本实施例中，屏幕20可用于显示图像、文字等。屏幕20可以为平面屏，也可以为曲面屏。屏幕20包括第一盖板21和显示屏22。第一盖板21层叠于显示屏22。第一盖板21可以紧贴显示屏22设置，可主要用于对显示屏22起到保护以及防尘作用。第一盖板21的材质可以为但不仅限于为玻璃。显示屏22可以采用有机发光二极管(organic light-emitting diode，OLED)显示屏，有源矩阵有机发光二极体或主动矩阵有机发光二极体(active-matrix organic light-emitting diode，AMOLED)显示屏，量子点发光二极管(quantum dot light emitting diodes，QLED)显示屏等。In this embodiment, the screen 20 may be used to display images, text, and the like. The screen 20 may be a flat screen or a curved screen. The screen 20 includes a first cover 21 and a display screen 22 . The first cover plate 21 is stacked on the display screen 22 . The first cover plate 21 can be disposed close to the display screen 22 , and can be mainly used for protecting and dustproofing the display screen 22 . The material of the first cover plate 21 can be, but not limited to, glass. The display screen 22 can adopt an organic light-emitting diode (organic light-emitting diode, OLED) display screen, an active matrix organic light emitting diode or an active matrix organic light emitting diode (active-matrix organic light-emitting diode, AMOLED) display screen , quantum dot light emitting diode (quantum dot light emitting diodes, QLED) display, etc.

请参阅图3，并结合图2所示，图3是图1所示的电子设备100在A-A线处的部分剖面示意图。主机电路板30固定于电子设备100的内部。具体的，主机电路板30可以固定于屏幕20朝向后盖12的一侧。在其他实施例中，当壳体10包括中板。主机电路板30可以固定于中板朝向后盖12的表面。Please refer to FIG. 3 in conjunction with FIG. 2 . FIG. 3 is a partial cross-sectional schematic diagram of the electronic device 100 shown in FIG. 1 at the line A-A. The host circuit board 30 is fixed inside the electronic device 100 . Specifically, the host circuit board 30 may be fixed to the side of the screen 20 facing the back cover 12 . In other embodiments, the housing 10 includes a midplane. The host circuit board 30 can be fixed on the surface of the middle board facing the rear cover 12 .

可以理解的是，主机电路板30可以为硬质电路板，也可以为柔性电路板，也可以为软硬结合电路板。主机电路板30可以采用FR-4介质板，也可以采用罗杰斯(Rogers)介质板，也可以采用FR-4和Rogers的混合介质板，等等。这里，FR-4是一种耐燃材料等级的代号，Rogers介质板为一种高频板。另外，主机电路板30可以用于设置芯片。例如，芯片可以为中央处理器(central processing unit，CPU)、图形处理器(graphics processing unit，GPU)以及通用存储器(universal flash storage，UFS)等。It can be understood that the host circuit board 30 may be a rigid circuit board, a flexible circuit board, or a flexible-rigid circuit board. The host circuit board 30 may use an FR-4 dielectric board, a Rogers (Rogers) dielectric board, or a mixed FR-4 and Rogers dielectric board, and so on. Here, FR-4 is the code name for a flame-resistant material grade, and the Rogers dielectric board is a high-frequency board. Additionally, the host circuit board 30 may be used to house the chips. For example, the chip may be a central processing unit (central processing unit, CPU), a graphics processing unit (graphics processing unit, GPU), and a universal flash storage (universal flash storage, UFS) and the like.

请再次参阅图3，并结合图2所示，摄像模组40固定于电子设备100的内部。具体的，摄像模组40固定于屏幕20朝向后盖12的一侧。在其他实施例中，当壳体10包括中板时，摄像模组40可以固定于中板朝向后盖12的表面。Please refer to FIG. 3 again, and with reference to FIG. 2 , the camera module 40 is fixed inside the electronic device 100 . Specifically, the camera module 40 is fixed on the side of the screen 20 facing the back cover 12 . In other embodiments, when the housing 10 includes a middle plate, the camera module 40 can be fixed on the surface of the middle plate facing the rear cover 12 .

另外，主机电路板30设置有避让空间31。避让空间31的形状不仅限于图1与图2所示意的矩形。此时，主机电路板30的形状也不限于附图1与附图2所示意的“┘”型。摄像模组40位于避让空间31内。这样，在Z轴方向上，摄像模组40与主机电路板30具有重叠区域，从而避免了因摄像模组40堆叠于主机电路板30而导致电子设备100的厚度增大。In addition, the host circuit board 30 is provided with an escape space 31 . The shape of the avoidance space 31 is not limited to the rectangle shown in FIGS. 1 and 2 . At this time, the shape of the host circuit board 30 is not limited to the "┘" shape shown in FIG. 1 and FIG. 2 . The camera module 40 is located in the avoidance space 31 . In this way, in the Z-axis direction, the camera module 40 and the host circuit board 30 have an overlapping area, so as to avoid an increase in the thickness of the electronic device 100 due to the camera module 40 being stacked on the host circuit board 30 .

在其他实施例中，主机电路板30也可以未设置避让空间31。此时，摄像模组40可以堆叠于主机电路板30，或者与主机电路板30间隔设置。In other embodiments, the host circuit board 30 may not be provided with the avoidance space 31 . At this time, the camera module 40 may be stacked on the host circuit board 30 , or disposed at intervals from the host circuit board 30 .

在本实施例中，摄像模组40电连接于主机电路板30。具体的，摄像模组40通过主机电路板30电连接于CPU。当CPU接收到用户的指令时，CPU能够通过主机电路板30向摄像模组40发送信号，以控制摄像模组40拍摄图像或者录像。在其他实施例中，当电子设备100未设置主机电路板30时，摄像模组40也可以直接接收用户的指令，并根据用户的指令进行拍摄图像或者录像。In this embodiment, the camera module 40 is electrically connected to the host circuit board 30 . Specifically, the camera module 40 is electrically connected to the CPU through the host circuit board 30 . When the CPU receives the user's instruction, the CPU can send a signal to the camera module 40 through the host circuit board 30 to control the camera module 40 to capture images or record videos. In other embodiments, when the electronic device 100 is not provided with the host circuit board 30 , the camera module 40 may also directly receive the user's instruction, and take images or video according to the user's instruction.

请再次参阅图3，后盖12开设有通孔13。通孔13将电子设备100的内部连通至电子设备100的外部。电子设备100还包括摄像头装饰件51和第二盖板52。部分摄像头装饰件51可以固定于后盖12的内表面，部分摄像头装饰件51接触于通孔13的孔壁。第二盖板52固定连接在摄像头装饰件51的内表面。摄像头装饰件51与第二盖板52将电子设备100的内部与电子设备100的外部隔开，从而避免外界的水或者灰尘经通孔进入电子设备100的内部。第二盖板52的材质为透明材料。例如，玻璃或者塑料。此时，电子设备100外部的环境光线能够穿过第二盖板52进入电子设备100的内部。摄像模组40采集进入电子设备100内部的环境光线。可以理解的是，通孔13的形状不仅限于附图1及附图2所示意的圆形。例如，通孔13的形状也可以为椭圆形或者其他不规则图形等。Referring again to FIG. 3 , the rear cover 12 defines a through hole 13 . The through hole 13 communicates the inside of the electronic device 100 to the outside of the electronic device 100 . The electronic device 100 further includes a camera decoration member 51 and a second cover plate 52 . Part of the camera decorations 51 may be fixed on the inner surface of the back cover 12 , and some of the camera decorations 51 are in contact with the hole walls of the through holes 13 . The second cover plate 52 is fixedly connected to the inner surface of the camera decorative piece 51 . The camera decoration member 51 and the second cover plate 52 separate the inside of the electronic device 100 from the outside of the electronic device 100 , so as to prevent external water or dust from entering the inside of the electronic device 100 through the through holes. The material of the second cover plate 52 is a transparent material. For example, glass or plastic. At this time, ambient light outside the electronic device 100 can enter the interior of the electronic device 100 through the second cover plate 52 . The camera module 40 captures ambient light entering the electronic device 100 . It can be understood that the shape of the through hole 13 is not limited to the circle shown in FIG. 1 and FIG. 2 . For example, the shape of the through hole 13 may also be an ellipse or other irregular shapes.

在其他实施例中，摄像模组40也可以采集穿过后盖12的环境光线。具体的，后盖12的材质为透明材料。例如，玻璃或者塑料。后盖12朝向电子设备100内部的表面部分涂覆油墨，部分未涂覆油墨。此时，未涂覆油墨的区域形成透光区域。当环境光线经该透光区域进入电子设备100的内部时，摄像模组40采集环境光线。可以理解的是，本实施例的电子设备100可以不用开设通孔13，也可以不用设置摄像头装饰件51和第二盖板52。电子设备100的整体性较佳，成本较低。In other embodiments, the camera module 40 can also collect ambient light passing through the back cover 12 . Specifically, the material of the back cover 12 is a transparent material. For example, glass or plastic. The surface of the back cover 12 facing the inside of the electronic device 100 is partially coated with ink, and partially uncoated with ink. At this time, the area where the ink is not applied forms the light-transmitting area. When ambient light enters the interior of the electronic device 100 through the light-transmitting area, the camera module 40 collects the ambient light. It can be understood that, in the electronic device 100 of this embodiment, the through hole 13 may not be provided, and the camera decorative member 51 and the second cover plate 52 may not be provided. The electronic device 100 has better integrity and lower cost.

上文结合相关附图具体介绍了电子设备100的部分结构，以及各部分结构的相关作用。下文将结合相关附图具体介绍摄像模组40的结构。Part of the structure of the electronic device 100 and the related functions of each part of the structure are described in detail above with reference to the related drawings. The structure of the camera module 40 will be described in detail below with reference to the related drawings.

请参阅图4及图5，图4是图1所示的电子设备100的摄像模组40的结构示意图。图5是图4所示的摄像模组40的部分分解示意图。摄像模组40包括外壳41、反射装置42、对焦镜头43、定焦镜头44、滤光片45、模组电路板46以及感光芯片47。其中，外壳41、反射装置42、对焦镜头43与定焦镜头44构成光学镜头。需要说明的是，本实施例的摄像模组40的光轴方向与对焦镜头43的光轴方向和定焦镜头44的光轴方向相同。Please refer to FIGS. 4 and 5 . FIG. 4 is a schematic structural diagram of the camera module 40 of the electronic device 100 shown in FIG. 1 . FIG. 5 is a partially exploded schematic view of the camera module 40 shown in FIG. 4 . The camera module 40 includes a housing 41 , a reflection device 42 , a focusing lens 43 , a fixed-focus lens 44 , a filter 45 , a module circuit board 46 and a photosensitive chip 47 . The housing 41 , the reflection device 42 , the focusing lens 43 and the fixed-focus lens 44 constitute an optical lens. It should be noted that the optical axis direction of the camera module 40 in this embodiment is the same as the optical axis direction of the focusing lens 43 and the optical axis direction of the fixed focus lens 44 .

其中，外壳41包括上盖411以及底座412。上盖411的结构不仅限于图4与图5所示意的框状结构。例如，上盖411也可以为平板结构。需要说明的是，图5的上方的标记412在图5的下方已经清楚地标记所对应的结构。图5的上方标记412主要说明底座412与上盖411均属于底座412。The housing 41 includes an upper cover 411 and a base 412 . The structure of the upper cover 411 is not limited to the frame-like structure shown in FIGS. 4 and 5 . For example, the upper cover 411 can also be a flat plate structure. It should be noted that, the symbols 412 at the top of FIG. 5 have clearly marked the corresponding structures at the bottom of FIG. 5 . The upper mark 412 in FIG. 5 mainly indicates that both the base 412 and the upper cover 411 belong to the base 412 .

此外，上盖411安装于底座412。上盖411与底座412围出外壳41的内部。结合附图3所示，当上盖411安装于底座412时，部分上盖411位于底座412的顶部，部分上盖411位于底座412的周边。In addition, the upper cover 411 is mounted on the base 412 . The upper cover 411 and the base 412 surround the interior of the casing 41 . As shown in FIG. 3 , when the upper cover 411 is installed on the base 412 , part of the upper cover 411 is located on the top of the base 412 , and part of the upper cover 411 is located at the periphery of the base 412 .

请再次参阅图4与图5，上盖411设有第一透光孔413。第一透光孔413将外壳41的内部连通至外壳41的外部。第一透光孔413的形状不仅限于图4与图5所示意的长方形。结合图3所示，第一透光孔413与第二盖板52相对设置。此时，电子设备100外部的环境光线能够经第二盖板52、第一透光孔413进入外壳41的内部，也即摄像模组40的内部。Please refer to FIG. 4 and FIG. 5 again, the upper cover 411 is provided with a first light-transmitting hole 413 . The first light-transmitting hole 413 communicates the inside of the housing 41 to the outside of the housing 41 . The shape of the first light-transmitting hole 413 is not limited to the rectangle shown in FIGS. 4 and 5 . As shown in FIG. 3 , the first light-transmitting hole 413 is disposed opposite to the second cover plate 52 . At this time, ambient light outside the electronic device 100 can enter the interior of the housing 41 , that is, the interior of the camera module 40 , through the second cover plate 52 and the first light-transmitting hole 413 .

请再次参阅图5，底座412包括底板4120、相对设置的左侧板4121与右侧板4122、以及相对设置的前侧板4123与后侧板4124。底板4120连接在左侧板4121与右侧板4122之间。底板4120也连接在前侧板4123与后侧板4124之间。左侧板4121与右侧板4122连接在前侧板4123与后侧板4124之间。这样，底板4120、左侧板4121、右侧板4122、前侧板4123与后侧板4124围成框状结构。Referring to FIG. 5 again, the base 412 includes a bottom plate 4120 , a left side plate 4121 and a right side plate 4122 arranged oppositely, and a front side plate 4123 and a rear side plate 4124 arranged oppositely. The bottom plate 4120 is connected between the left side plate 4121 and the right side plate 4122 . The bottom plate 4120 is also connected between the front side plate 4123 and the rear side plate 4124 . The left side plate 4121 and the right side plate 4122 are connected between the front side plate 4123 and the rear side plate 4124 . In this way, the bottom plate 4120 , the left side plate 4121 , the right side plate 4122 , the front side plate 4123 and the rear side plate 4124 form a frame-like structure.

请参阅图6，并结合图5所示，图6是图4所示的摄像模组40的部分结构示意图。反射装置42位于外壳41的内部。反射装置42固定于底板4120。此外，反射装置42可以连接于左侧板4121。这样，反射装置42可以将左侧板4121连接至底板4120。底座412的整体性更佳，结构强度也更佳。当然，反射装置42可以连接于前侧板4123或者后侧板4124。在其他实施例中，反射装置42也可以固定于外壳41的其他位置，例如上盖411。Please refer to FIG. 6 , in conjunction with FIG. 5 , FIG. 6 is a partial structural diagram of the camera module 40 shown in FIG. 4 . The reflector 42 is located inside the housing 41 . The reflection device 42 is fixed on the bottom plate 4120 . In addition, the reflection device 42 may be connected to the left side plate 4121 . In this way, the reflection device 42 may connect the left side plate 4121 to the bottom plate 4120 . The integrity of the base 412 is better, and the structural strength is also better. Of course, the reflection device 42 may be connected to the front side plate 4123 or the rear side plate 4124 . In other embodiments, the reflection device 42 may also be fixed to other positions of the housing 41 , such as the upper cover 411 .

其中，反射装置42包括棱镜马达421及反射件422。棱镜马达421固定于底板4120。反射件422可以为三棱镜，也可以为反射镜。本实施例的反射件422以三棱镜为例进行描述。需要说明的是，下文三棱镜的标号与反射件的标号相同。The reflecting device 42 includes a prism motor 421 and a reflecting member 422 . The prism motor 421 is fixed to the base plate 4120 . The reflector 422 may be a triangular prism or a reflector. The reflecting member 422 in this embodiment is described by taking a triangular prism as an example. It should be noted that the reference numerals of the triangular prisms below are the same as those of the reflector.

请结合图3所示，三棱镜422包括入光面4221、反射面4222以及出光面4223。反射面4222连接于入光面4221与出光面4223之间。入光面4221与第一透光孔413相对设置。此时，当环境光线经第一透光孔413进入外壳41的内部时，环境光线经入光面4221进入三棱镜422内，并在三棱镜422的反射面4222处进行反射。此时，沿Z轴方向传播的环境光线被反射至沿X轴方向传播。最后，环境光线再经三棱镜422的出光面4223传出三棱镜422的外部。Referring to FIG. 3 , the triangular prism 422 includes a light incident surface 4221 , a reflection surface 4222 and a light exit surface 4223 . The reflection surface 4222 is connected between the light incident surface 4221 and the light exit surface 4223 . The light incident surface 4221 is disposed opposite to the first light transmission hole 413 . At this time, when ambient light enters the interior of the housing 41 through the first light-transmitting hole 413 , the ambient light enters the triangular prism 422 through the light incident surface 4221 and is reflected at the reflective surface 4222 of the triangular prism 422 . At this time, ambient light propagating in the Z-axis direction is reflected to propagate in the X-axis direction. Finally, the ambient light is transmitted out of the triangular prism 422 through the light emitting surface 4223 of the triangular prism 422 .

可以理解的是，通过在外壳41的内部设置三棱镜422，从而利用三棱镜422将沿Z轴方向传播的环境光线反射至沿X轴方向传播。这样，接收沿X轴方向传播的环境光线的摄像模组40的器件可以沿X轴方向排布。由于电子设备100在X轴方向的尺寸较大，摄像模组40内的器件在X轴方向的排布更加的灵活，更加简单。在本实施例中，摄像模组40的光轴方向为X轴方向。在其他实施例中，摄像模组40的光轴方向也可以为Y轴方向。It can be understood that by arranging the triangular prism 422 inside the housing 41, the triangular prism 422 is used to reflect the ambient light propagating in the Z-axis direction to propagating in the X-axis direction. In this way, the components of the camera module 40 that receive ambient light propagating along the X-axis direction can be arranged along the X-axis direction. Since the size of the electronic device 100 in the X-axis direction is relatively large, the arrangement of the components in the camera module 40 in the X-axis direction is more flexible and simpler. In this embodiment, the optical axis direction of the camera module 40 is the X axis direction. In other embodiments, the optical axis direction of the camera module 40 may also be the Y axis direction.

请再次参阅图6，三棱镜422可以转动连接于棱镜马达421。三棱镜422能够以Y轴为转动轴，在XZ平面转动。另外，三棱镜422也能够以Z轴为转动轴，在XY平面转动。可以理解的是，摄像模组40在采集环境光线的过程中容易发生抖动，此时，环境光线的传输路径容易发生偏折，从而导致摄像模组40拍摄的图像不佳。在本实施例中，当环境光线的传输路径发生偏折时，棱镜马达421能够驱动三棱镜422转动，从而利用三棱镜422来调整环境光线的传输路径，减少或者避免环境光线的传输路径发生偏折，进而保证摄像模组40具有较佳的拍摄效果。故而，反射装置40可以起到光学防抖的效果。Please refer to FIG. 6 again, the triangular prism 422 is rotatably connected to the prism motor 421 . The triangular prism 422 can rotate on the XZ plane with the Y axis as the rotation axis. In addition, the triangular prism 422 can also be rotated in the XY plane with the Z axis as the rotation axis. It can be understood that the camera module 40 is prone to shake during the process of collecting ambient light, and at this time, the transmission path of the ambient light is prone to deflection, resulting in poor images captured by the camera module 40 . In this embodiment, when the transmission path of the ambient light is deflected, the prism motor 421 can drive the triangular prism 422 to rotate, so that the triangular prism 422 can be used to adjust the transmission path of the ambient light and reduce or avoid the deflection of the transmission path of the ambient light. This ensures that the camera module 40 has a better shooting effect. Therefore, the reflection device 40 can play an optical anti-shake effect.

在其他实施例中，三棱镜422也可以固定连接于棱镜马达421或者也可以滑动连接于棱镜马达421。In other embodiments, the triangular prism 422 can also be fixedly connected to the prism motor 421 or can be slidably connected to the prism motor 421 .

请再次参阅图6，对焦镜头43位于外壳41的内部。对焦镜头43设置于底座412。对焦镜头43位于反射装置42的出光侧，也即反射装置42位于对焦镜头43的物侧。这样，经反射装置42反射的环境光线能够传输至对焦镜头43内。在其他实施例中，对焦镜头43也可以设置于外壳41的其他位置。例如，对焦镜头43也可以设置于反射装置42的入光侧。这样，环境光线能够先经对焦镜头43之后，再传输至反射装置42。Referring again to FIG. 6 , the focusing lens 43 is located inside the housing 41 . The focusing lens 43 is disposed on the base 412 . The focusing lens 43 is located on the light-emitting side of the reflecting device 42 , that is, the reflecting device 42 is located on the object side of the focusing lens 43 . In this way, the ambient light reflected by the reflecting device 42 can be transmitted into the focusing lens 43 . In other embodiments, the focusing lens 43 may also be disposed at other positions of the housing 41 . For example, the focus lens 43 may be provided on the light incident side of the reflection device 42 . In this way, the ambient light can be transmitted to the reflecting device 42 after passing through the focusing lens 43 first.

请再次参阅图5，并结合图6所示，对焦镜头43包括马达430、第一透镜433以及第二透镜434。马达430设置于底座412。第一透镜433与第二透镜434均安装于马达430。第二透镜434位于第一透镜433的像侧。马达430用于带动第一透镜433与第二透镜434在垂直于摄像模组40的光轴方向(也即X轴方向)上移动。此时，第一透镜433与第二透镜434的移动方向可以为YZ平面上的任一方向。例如，第一透镜433与第二透镜434的移动方向为Y轴方向(包括Y轴正方向和Y轴负方向)。可以理解的是，第一透镜433与第二透镜434的移动方向可以相反也可以相同。此外，第一透镜433与第二透镜434可以同时移动，也可以间隔移动。Please refer to FIG. 5 again, in conjunction with FIG. 6 , the focusing lens 43 includes a motor 430 , a first lens 433 and a second lens 434 . The motor 430 is disposed on the base 412 . The first lens 433 and the second lens 434 are both mounted on the motor 430 . The second lens 434 is located on the image side of the first lens 433 . The motor 430 is used to drive the first lens 433 and the second lens 434 to move in a direction perpendicular to the optical axis of the camera module 40 (ie, the X-axis direction). At this time, the moving direction of the first lens 433 and the second lens 434 may be any direction on the YZ plane. For example, the moving direction of the first lens 433 and the second lens 434 is the Y-axis direction (including the Y-axis positive direction and the Y-axis negative direction). It can be understood that, the moving directions of the first lens 433 and the second lens 434 may be opposite or the same. In addition, the first lens 433 and the second lens 434 may be moved simultaneously or at intervals.

请再次参阅图5及图6，马达430包括第一驱动部431以及第二驱动部432。第一驱动部431以及第二驱动部432均设置于底座412。第一驱动部431包括动力源组件以及传动组件。传动组件连接于动力源组件。动力源组件带动传动组件移动。例如，动力源组件可以包括线圈与磁铁。磁铁在线圈所产生的磁场下形成安培力。传动件组件在安培力下相对动力源组件移动。再例如，动力源组件可以包括形状记忆合金(shape memory alloys，SMA)线。当SMA线接收电流信号时，SMA线可以产生收缩力。传动件组件在该收缩力下相对动力源组件移动。再例如，动力源组件也可以包括电机以及齿条。齿条与电机的齿轮啮合。当电机转动时，电机带动齿条移动。齿条带动传动件组件移动。Please refer to FIGS. 5 and 6 again, the motor 430 includes a first driving part 431 and a second driving part 432 . The first driving part 431 and the second driving part 432 are both disposed on the base 412 . The first driving part 431 includes a power source assembly and a transmission assembly. The transmission assembly is connected to the power source assembly. The power source assembly drives the transmission assembly to move. For example, the power source assembly may include a coil and a magnet. The magnet creates an ampere force under the magnetic field created by the coil. The drive member assembly moves relative to the power source assembly under ampere force. As another example, the power source assembly may include shape memory alloys (SMA) wires. When the SMA wire receives a current signal, the SMA wire can generate a contractile force. The transmission member assembly moves relative to the power source assembly under the contraction force. For another example, the power source assembly may also include a motor and a rack. The rack meshes with the gears of the motor. When the motor rotates, the motor drives the rack to move. The rack drives the transmission component to move.

可以理解的是，第二驱动部432的结构可以参阅第一驱动部431的结构。这里不再赘述。第二驱动部432的动力源组件可以共用第一驱动部431的动力源组件。另外，第二驱动部432的部分传动组件也可以与第一驱动部431的传动组件共用。具体情况可以根据需要灵活设置。It can be understood that the structure of the second driving part 432 may refer to the structure of the first driving part 431 . I won't go into details here. The power source components of the second driving part 432 may share the power source components of the first driving part 431 . In addition, part of the transmission components of the second driving part 432 may also be shared with the transmission components of the first driving part 431 . The specific situation can be flexibly set as needed.

另外，第一驱动部431连接第一透镜433。第一驱动部431用于驱动第一透镜433在垂直于X轴方向上移动。在本实施例中，第一驱动部431用于驱动第一透镜433沿Y轴方向(Y轴方向包括Y轴正方向和Y轴负方向)移动。In addition, the first driving unit 431 is connected to the first lens 433 . The first driving part 431 is used for driving the first lens 433 to move in a direction perpendicular to the X-axis. In this embodiment, the first driving part 431 is used to drive the first lens 433 to move along the Y-axis direction (the Y-axis direction includes the Y-axis positive direction and the Y-axis negative direction).

另外，第二驱动部432连接第二透镜434。第二驱动部432用于驱动第二透镜434在垂直于X轴方向上移动。在本实施例中，第二驱动部432用于驱动第二透镜434沿Y轴方向移动。In addition, the second driving unit 432 is connected to the second lens 434 . The second driving part 432 is used to drive the second lens 434 to move in a direction perpendicular to the X-axis. In this embodiment, the second driving part 432 is used to drive the second lens 434 to move along the Y-axis direction.

在本实施例中，当第一驱动部431驱动第一透镜433沿Y轴方向移动，第二驱动部432驱动第二透镜434沿Y轴方向移动时，第一透镜433与第二透镜434的相对位置发生变化。需要说明的是，第一透镜433与第二透镜434的相对位置发生变化是指，第一透镜433正对第二透镜434的部分发生变化，和/或，第二透镜434正对第一透镜433的部分发生变化。其中，两个部分“正对”是指这两个部分在垂直于摄像模组40的光轴方向的平面(YZ平面)上的正投影重合。其中，当第一透镜433正对第二透镜434的部分发生变化时，第一透镜433正对第二透镜434的部分的物侧面形状、像侧面形状、厚度等因素中至少一者发生变化。第二透镜434正对第一透镜433的部分发生变化时，第二透镜434正对第一透镜433的部分的物侧面形状、像侧面形状、厚度等因素中至少一者发生变化。In this embodiment, when the first driving part 431 drives the first lens 433 to move in the Y-axis direction, and the second driving part 432 drives the second lens 434 to move in the Y-axis direction, the difference between the first lens 433 and the second lens 434 The relative position changes. It should be noted that the change in the relative positions of the first lens 433 and the second lens 434 means that the part of the first lens 433 facing the second lens 434 changes, and/or the second lens 434 facing the first lens Parts of 433 changed. Wherein, the “directly facing” of the two parts means that the orthographic projections of the two parts on a plane (YZ plane) perpendicular to the optical axis direction of the camera module 40 are coincident. Wherein, when the portion of the first lens 433 facing the second lens 434 changes, at least one of factors such as the shape of the object side, the shape of the image side, and the thickness of the portion of the first lens 433 facing the second lens 434 changes. When the portion of the second lens 434 facing the first lens 433 is changed, at least one of factors such as the shape of the object side, the shape of the image side, and the thickness of the portion of the second lens 434 facing the first lens 433 is changed.

在本实施例中，第一透镜433与第二透镜434具有阿尔瓦雷斯(Alvarez)透镜对的特性。当第一透镜433与第二透镜434的相对位置发生变化时，第一透镜433正对第二透镜434的部分发生变化，对焦镜头43的光焦度变化。与Alvarez透镜对不同的是本实施例的第一透镜433的物侧面与像侧面均为自由曲面。第二透镜434的物侧面与像侧面均为自由曲面。此时，第一透镜433与第二透镜434的自由曲面的总数量为四个。这样，摄像模组40的光学设计的自由度能够显著增大。此时，在摄像模组40采集环境光线的过程中，第一透镜433与第二透镜434能够优化减小像差，进而提高摄像模组40的成像质量。In this embodiment, the first lens 433 and the second lens 434 have the characteristics of an Alvarez lens pair. When the relative positions of the first lens 433 and the second lens 434 change, the portion of the first lens 433 facing the second lens 434 changes, and the refractive power of the focusing lens 43 changes. Different from the Alvarez lens pair, the object side surface and the image side surface of the first lens 433 in this embodiment are both free-form surfaces. Both the object side surface and the image side surface of the second lens 434 are free curved surfaces. At this time, the total number of free curved surfaces of the first lens 433 and the second lens 434 is four. In this way, the degree of freedom of the optical design of the camera module 40 can be significantly increased. At this time, in the process of collecting ambient light by the camera module 40 , the first lens 433 and the second lens 434 can optimize and reduce aberrations, thereby improving the imaging quality of the camera module 40 .

在其他实施例中，第一透镜433的物侧面和像侧面中包括至少一个自由曲面。第二透镜434的物侧面和像侧面中包括至少一个自由曲面。自由曲面的总数量为两个或者三个。例如，第一透镜433的物侧面为非自由曲面，例如平面或者球面。第一透镜433的像侧面为自由曲面。第二透镜434的物侧面为自由曲面。第二透镜434的像侧面为非自由曲面，例如平面或者球面。In other embodiments, the object side and the image side of the first lens 433 include at least one free-form surface. The object side and the image side of the second lens 434 include at least one free-form surface. The total number of freeform surfaces is two or three. For example, the object side surface of the first lens 433 is a non-free-form surface, such as a plane or spherical surface. The image side surface of the first lens 433 is a free-form surface. The object side surface of the second lens 434 is a free-form surface. The image side surface of the second lens 434 is a non-free curved surface, such as a plane or spherical surface.

请再次参阅图6，并结合图5所示，定焦镜头44位于外壳41的内部。定焦镜头44设置于底座412。定焦镜头44位于对焦镜头43的像侧，也即对焦镜头43位于定焦镜头44的物侧。这样，对焦镜头43位于反射装置42与定焦镜头44之间。Please refer to FIG. 6 again, in conjunction with FIG. 5 , the fixed-focus lens 44 is located inside the housing 41 . The fixed-focus lens 44 is disposed on the base 412 . The fixed-focus lens 44 is located on the image side of the focus lens 43 , that is, the focus lens 43 is located on the object side of the fixed-focus lens 44 . In this way, the focus lens 43 is located between the reflection device 42 and the fixed focus lens 44 .

此外，外壳41还包括固定台4125。固定台4125固定于底板4120。固定台4125可以连接于右侧板4122。这样，固定台4125能够将右侧板4122连接至底板4120。此时，底座412的整体性更好，结构强度也更佳。另外，固定台4125设置有限位槽4126。此时，固定台4125大致呈“凵”型。另外，定焦镜头44固定于限位槽4126内。可以理解的是，通过将定焦镜头44设置于限位槽4126内，从而利用限位槽4126的槽壁对定焦镜头44进行限位，进而提高定焦镜头44的稳定性。In addition, the housing 41 also includes a fixing table 4125 . The fixing table 4125 is fixed to the bottom plate 4120 . The fixing table 4125 can be connected to the right side plate 4122 . In this way, the fixing table 4125 can connect the right side plate 4122 to the bottom plate 4120 . At this time, the integrity of the base 412 is better, and the structural strength is also better. In addition, the fixing table 4125 is provided with a limiting groove 4126 . At this time, the fixing table 4125 is substantially in the shape of a "Hang". In addition, the fixed-focus lens 44 is fixed in the limiting groove 4126 . It can be understood that by arranging the fixed-focus lens 44 in the limiting groove 4126 , the fixed-focus lens 44 is limited by the groove wall of the limiting groove 4126 , thereby improving the stability of the fixed-focus lens 44 .

请再次参阅图6，并结合图5所示，底座412开设有第二透光孔4127。第二透光孔4127将外壳41的内部连通至外壳41的外部。第二透光孔4127与固定台4125相对设置，且第二透光孔4127正对于定焦镜头44的出光侧。Please refer to FIG. 6 again, and in conjunction with FIG. 5 , the base 412 defines a second light-transmitting hole 4127 . The second light-transmitting hole 4127 communicates the inside of the housing 41 to the outside of the housing 41 . The second light-transmitting hole 4127 is disposed opposite to the fixing table 4125 , and the second light-transmitting hole 4127 is facing the light-emitting side of the fixed-focus lens 44 .

另外，滤光片45固定于第二透光孔4127内，也即滤光片45固定于外壳41。滤光片45位于定焦镜头44与感光芯片47之间，且均与定焦镜头44与感光芯片47间隔设置。结合附图3所示，当环境光线经三棱镜422的出光面4223射出时，环境光线依次穿过对焦镜头43、定焦镜头44，并传输至滤光片45。此时，滤光片45可用于过滤环境光线中的杂光，并使过滤后的环境光线传播至感光芯片47，从而保证电子设备100拍摄图像具有较佳的清晰度。滤光片45可以为但不仅限于为蓝色玻璃滤光片。例如，滤光片45还可以为反射式红外滤光片，或者是双通滤光片(双通滤光片可使环境光线中的可见光和红外光同时透过，或者使环境光线中的可见光和其他特定波长的光线(例如紫外光)同时透过，或者使红外光和其他特定波长的光线(例如紫外光)同时透过。)。In addition, the filter 45 is fixed in the second light-transmitting hole 4127 , that is, the filter 45 is fixed on the housing 41 . The optical filter 45 is located between the fixed-focus lens 44 and the photosensitive chip 47 , and is spaced apart from the fixed-focus lens 44 and the photosensitive chip 47 . As shown in FIG. 3 , when ambient light exits through the light-emitting surface 4223 of the triangular prism 422 , the ambient light passes through the focusing lens 43 and the fixed-focus lens 44 in sequence, and is transmitted to the filter 45 . At this time, the filter 45 can be used to filter the stray light in the ambient light, and make the filtered ambient light propagate to the photosensitive chip 47, so as to ensure that the image captured by the electronic device 100 has better clarity. The filter 45 may be, but is not limited to, a blue glass filter. For example, the filter 45 can also be a reflective infrared filter, or a double-pass filter (the double-pass filter can transmit visible light and infrared light in ambient light at the same time, or allow visible light in ambient light to pass through at the same time. It transmits light of other specific wavelengths (such as ultraviolet light) at the same time, or transmits infrared light and light of other specific wavelengths (such as ultraviolet light) at the same time.).

在其他实施例中，滤光片45不局限于固定于右侧板4122。例如，右侧板4122远离左侧板4121的一侧设置有支架。支架设置有第三透光孔。第三透光孔与第二透光孔4127相对设置。此时，滤光片45固定连接于第三透光孔的孔壁。这样，当环境光线传输出定焦镜头44之后，环境光线能够依次穿过第二透光孔4127与第三透光孔，并传输至滤光片45。In other embodiments, the filter 45 is not limited to be fixed on the right side plate 4122 . For example, a side of the right side plate 4122 away from the left side plate 4121 is provided with a bracket. The bracket is provided with a third light-transmitting hole. The third light-transmitting hole is disposed opposite to the second light-transmitting hole 4127 . At this time, the filter 45 is fixedly connected to the hole wall of the third light-transmitting hole. In this way, after the ambient light is transmitted out of the fixed-focus lens 44 , the ambient light can pass through the second light-transmitting hole 4127 and the third light-transmitting hole in sequence, and be transmitted to the filter 45 .

请参阅图5，并结合图3所示，模组电路板46固定于右侧板4122远离左侧板4121的一侧。此时，模组电路板46与定焦镜头44间隔设置，且位于定焦镜头44的像侧。此外，感光芯片47固定于模组电路板46朝向滤光片45的一侧，也即感光芯片47固定于模组电路板46 朝向定焦镜头44的一侧。感光芯片47用于采集穿过定焦镜头44与滤光片45的环境光线。此外，感光芯片47位于第二透光孔4127内。此时，在X轴方向上，感光芯片47与右侧板4122具有重叠区域。摄像模组40在X轴方向上的长度较小。Please refer to FIG. 5 , in conjunction with FIG. 3 , the module circuit board 46 is fixed to the side of the right side board 4122 away from the left side board 4121 . At this time, the module circuit board 46 is spaced apart from the fixed-focus lens 44 and located on the image side of the fixed-focus lens 44 . In addition, the photosensitive chip 47 is fixed on the side of the module circuit board 46 facing the optical filter 45 , that is, the photosensitive chip 47 is fixed on the side of the module circuit board 46 facing the fixed-focus lens 44 . The photosensitive chip 47 is used to collect ambient light passing through the fixed-focus lens 44 and the filter 45 . In addition, the photosensitive chip 47 is located in the second light-transmitting hole 4127 . At this time, in the X-axis direction, the photosensitive chip 47 and the right side plate 4122 have an overlapping area. The length of the camera module 40 in the X-axis direction is small.

在其他实施例中，感光芯片47也可以未设置于第二透光孔4127内，但感光芯片47与滤光片45正对设置。In other embodiments, the photosensitive chip 47 may not be disposed in the second light-transmitting hole 4127 , but the photosensitive chip 47 and the filter 45 are disposed directly opposite.

其中，模组电路板46可以为硬质电路板，也可以为柔性电路板，也可以为软硬结合电路板。模组电路板46可以采用FR-4介质板，也可以采用罗杰斯(Rogers)介质板，也可以采用FR-4和Rogers的混合介质板，等等。The modular circuit board 46 may be a rigid circuit board, a flexible circuit board, or a flexible-rigid circuit board. The modular circuit board 46 can be a FR-4 dielectric board, a Rogers dielectric board, a mixed FR-4 and Rogers dielectric board, and the like.

另外，模组电路板46电连接于马达430与主机电路板30之间。这样，当主机电路板30接收到用户改变对焦透镜43的光焦度的指令时，主机电路板30通过模组电路板46向马达340发送信号。此时，马达340根据信号带动第一透镜433与第二透镜434移动。In addition, the module circuit board 46 is electrically connected between the motor 430 and the host circuit board 30 . In this way, when the host circuit board 30 receives the user's instruction to change the optical power of the focusing lens 43 , the host circuit board 30 sends a signal to the motor 340 through the module circuit board 46 . At this time, the motor 340 drives the first lens 433 and the second lens 434 to move according to the signal.

另外，模组电路板46还电连接于感光芯片47与主机电路板30之间。这样，当感光芯片47采集到环境光线之后。感光芯片47能够通过模组电路板46向主机电路板30发送信号。In addition, the module circuit board 46 is also electrically connected between the photosensitive chip 47 and the host circuit board 30 . In this way, after the photosensitive chip 47 collects ambient light. The photosensitive chip 47 can send signals to the host circuit board 30 through the module circuit board 46 .

一种实施方式中，感光芯片47可以通过板上芯片封装(chif on board，COB)技术贴装在模组电路板46。In one embodiment, the photosensitive chip 47 may be mounted on the module circuit board 46 through a chip on board (COB) technology.

在其他实施方式中，感光芯片47也可以通过焊球阵列封装(ball grid array，BGA)技术或者栅格阵列封装(land grid array，LGA)技术封装在模组电路板46。In other embodiments, the photosensitive chip 47 may also be packaged on the module circuit board 46 through a ball grid array (BGA) technology or a land grid array (LGA) technology.

在其他实施方式中，模组电路板46上还可以安装有电子元器件。电子元器件固定于感光芯片47的周边。电子元器件可以用于辅助感光芯片47采集环境光线，或者辅助感光芯片47对所采集的环境光线进行信号处理。In other embodiments, electronic components may also be mounted on the module circuit board 46 . Electronic components are fixed to the periphery of the photosensitive chip 47 . The electronic components may be used to assist the photosensitive chip 47 to collect ambient light, or to assist the photosensitive chip 47 to perform signal processing on the collected ambient light.

上文结合相关附图具体介绍了一种摄像模组40的结构。在其他实施例中，摄像模组40也可以未包括外壳41与反射装置42。此时，摄像模组40包括对焦镜头43与定焦镜头44。对焦镜头43与定焦镜头44沿Z方向堆叠设置。在其他实施例中，摄像模组40还可以包括固定透镜。固定透镜位于反射装置42与对焦镜头43之间。固定透镜可以用于较大程度地接收大视场角的光线。固定透镜的具体数量不做限定。The structure of a camera module 40 is specifically described above with reference to the relevant drawings. In other embodiments, the camera module 40 may also not include the casing 41 and the reflection device 42 . At this time, the camera module 40 includes a focus lens 43 and a fixed focus lens 44 . The focus lens 43 and the fixed focus lens 44 are stacked in the Z direction. In other embodiments, the camera module 40 may further include a fixed lens. The fixed lens is located between the reflection device 42 and the focusing lens 43 . The fixed lens can be used to receive light with a large field of view to a greater extent. The specific number of fixed lenses is not limited.

下文将结合上文中所示意的摄像模组40的结构具体介绍对焦镜头43的三种状态：无光焦度、正光焦度和负光焦度。Three states of the focusing lens 43 : no power, positive power, and negative power will be described in detail below in conjunction with the structure of the camera module 40 shown above.

第一种状态：对焦镜头43处于无光焦度状态。The first state: the focusing lens 43 is in the no-power state.

请参阅图7，并结合图6所示，图7是图5所示的摄像模组40的对焦镜头43处于一种状态的示意图。当第一驱动部431带动第一透镜433处于第一位置，第二驱动部432带动第二透镜434处于第二位置时，第一透镜433与第二透镜434完全正对设置。附图7通过虚线示意了第一透镜433与第二透镜434正对的部分。第一透镜433与第二透镜434完全正对指的是第一透镜433在YZ平面的正投影与第二透镜434在YZ平面的正投影完全重叠。此时，第一透镜433与第二透镜434相当于一个平板玻璃。这样，当平行的环境光线依次穿过第一透镜433与第二透镜434之后，环境光线依然平行出射，也即第一透镜433处于第一位置与第二透镜434处于第二位置时，第一透镜433与第二透镜434既无汇聚光线的效果，也无发散环境光线的效果。Please refer to FIG. 7 in conjunction with FIG. 6 . FIG. 7 is a schematic diagram of the focusing lens 43 of the camera module 40 shown in FIG. 5 in one state. When the first driving part 431 drives the first lens 433 to the first position, and the second driving part 432 drives the second lens 434 to the second position, the first lens 433 and the second lens 434 are completely opposite to each other. FIG. 7 shows the part where the first lens 433 and the second lens 434 are directly opposite to each other by dotted lines. The fact that the first lens 433 and the second lens 434 are completely facing each other means that the orthographic projection of the first lens 433 on the YZ plane and the orthographic projection of the second lens 434 on the YZ plane completely overlap. At this time, the first lens 433 and the second lens 434 are equivalent to one flat glass. In this way, after the parallel ambient light passes through the first lens 433 and the second lens 434 in sequence, the ambient light still exits in parallel, that is, when the first lens 433 is in the first position and the second lens 434 is in the second position, the first The lens 433 and the second lens 434 have neither the effect of converging light nor the effect of diffusing ambient light.

第二种状态：对焦镜头43处于正光焦度状态。The second state: the focusing lens 43 is in a state of positive refractive power.

请参阅图8，并结合图6和图7所示，图8是图5所示的摄像模组40的对焦镜头43处于另一种状态的示意图。当第一驱动部431带动第一透镜433自第一位置沿Y轴负方向(也即第一方向)移动，第二驱动部432带动第二透镜434自第二位置沿Y轴正方向(也即第二方向)移动时，部分第一透镜433与部分第二透镜434正对设置。附图8通过虚线示意了第一透镜433与第二透镜434正对的部分。此时，对焦镜头43具有正的焦距。当平行的环境光线依次穿过第一透镜433与第二透镜434之后，平行的环境光线汇聚至一个点。这样，第一透镜433与第二透镜434具有汇聚环境光线的效果。另外，在第一透镜433相对第二透镜434的移动过程中，对焦镜头43的光焦度可以增大，也可以减小。Please refer to FIG. 8 , combined with FIG. 6 and FIG. 7 , FIG. 8 is a schematic diagram of the focusing lens 43 of the camera module 40 shown in FIG. 5 in another state. When the first driving part 431 drives the first lens 433 from the first position to move in the negative direction of the Y-axis (ie, the first direction), the second driving part 432 drives the second lens 434 from the second position to move in the positive direction of the Y-axis (also known as the first direction). That is, when moving in the second direction), part of the first lens 433 and part of the second lens 434 are disposed facing each other. FIG. 8 shows the part where the first lens 433 and the second lens 434 are directly opposite to each other by dotted lines. At this time, the focus lens 43 has a positive focal length. After the parallel ambient light rays pass through the first lens 433 and the second lens 434 in sequence, the parallel ambient light rays converge to a point. In this way, the first lens 433 and the second lens 434 have the effect of converging ambient light. In addition, during the movement of the first lens 433 relative to the second lens 434, the optical power of the focusing lens 43 may increase or decrease.

一种实施方式中，第一透镜433自第一位置沿Y轴负方向上移动的行程在1毫米至4毫米的范围内。例如，第一透镜433自第一位置沿Y轴负方向上移动的行程可以为1毫米、2毫米、3毫米或者4毫米。可以理解的是，当第一透镜433自第一位置沿Y轴负方向上移动的行程在该尺寸范围内时，一方面，可以避免第一透镜433因移动行程较短而导致第一透镜433的弯曲程度显著增大，从而有利于第一透镜433的制造，且不容易加大与第二透镜434碰撞的风险，另一方面，可以避免第一透镜433因移动行程过长而影响马达的控制精度，以及显著增大摄像模组40体积。In one embodiment, the stroke of the first lens 433 moving from the first position along the negative direction of the Y-axis is in the range of 1 mm to 4 mm. For example, the travel of the first lens 433 moving from the first position in the negative direction of the Y-axis may be 1 mm, 2 mm, 3 mm or 4 mm. It can be understood that, when the moving stroke of the first lens 433 from the first position in the negative direction of the Y-axis is within this size range, on the one hand, it can be avoided that the first lens 433 is caused by a short moving stroke. The bending degree of the lens is significantly increased, which is beneficial to the manufacture of the first lens 433, and it is not easy to increase the risk of collision with the second lens 434. The control accuracy is improved, and the volume of the camera module 40 is significantly increased.

在其他实施方式中，第二透镜434自第二位置沿Y轴正方向上移动的行程可以参阅第一透镜433自第一位置沿Y轴负方向移动的行程。这里不再赘述。In other embodiments, the travel of the second lens 434 moving in the positive direction of the Y-axis from the second position may refer to the travel of the first lens 433 moving in the negative direction of the Y-axis from the first position. I won't go into details here.

第三种状态：对焦镜头43处于负光焦度状态。The third state: the focus lens 43 is in a negative power state.

请参阅图9a，并结合图6和图7所示，图9a是图5所示的摄像模组40的对焦镜头43处于再一种状态的示意图。当第一驱动部431带动第一透镜433自第一位置沿Y轴正方向移动。第二驱动部432带动第二透镜434自第二位置沿Y轴负方向移动时，部分第一透镜433与部分第二透镜434正对设置。附图9a通过虚线示意了第一透镜433与第二透镜434正对的部分。此时，对焦镜头43具有负的焦距。此时，当平行的环境光线依次穿过第一透镜433与第二透镜434之后，平行的环境光线未汇聚于一个点，且向外发散。这样，第一透镜433与第二透镜434具有发散环境光线的效果。Please refer to FIG. 9a, combined with FIG. 6 and FIG. 7, FIG. 9a is a schematic diagram of the focusing lens 43 of the camera module 40 shown in FIG. 5 in still another state. When the first driving part 431 drives the first lens 433 to move from the first position along the positive direction of the Y-axis. When the second driving part 432 drives the second lens 434 to move from the second position along the negative direction of the Y-axis, a part of the first lens 433 and a part of the second lens 434 are disposed facing each other. FIG. 9a shows the part where the first lens 433 and the second lens 434 are directly opposite to each other by dotted lines. At this time, the focus lens 43 has a negative focal length. At this time, after the parallel ambient light rays pass through the first lens 433 and the second lens 434 in sequence, the parallel ambient light rays do not converge at one point and diverge outward. In this way, the first lens 433 and the second lens 434 have the effect of diffusing ambient light.

一种实施方式中，第一透镜433自第一位置沿Y轴正方向上移动的行程在1毫米至4毫米的范围内。例如，第一透镜433在Y轴正方向的移动行程可以为1毫米、2毫米、3毫米或者4毫米。可以理解的是，当第一透镜433自第一位置沿Y轴正方向上移动的行程在该尺寸范围内时，一方面，可以避免第一透镜433因移动行程较短而导致第一透镜433的弯曲程度显著增大，从而有利于第一透镜433的制造，且不容易加大与第二透镜434碰撞的风险，另一方面，可以避免第一透镜433因移动行程过长而影响马达的控制精度，以及显著增大摄像模组40体积。In one embodiment, the travel of the first lens 433 moving from the first position in the positive direction of the Y-axis is in the range of 1 mm to 4 mm. For example, the movement stroke of the first lens 433 in the positive direction of the Y-axis may be 1 mm, 2 mm, 3 mm or 4 mm. It can be understood that, when the stroke of the first lens 433 moving from the first position in the positive direction of the Y-axis is within this size range, on the one hand, it can be avoided that the first lens 433 is moved due to a short stroke. The degree of curvature is significantly increased, which is beneficial to the manufacture of the first lens 433, and the risk of collision with the second lens 434 is not easy to increase. accuracy, and significantly increase the volume of the camera module 40 .

在其他实施方式中，第二透镜434自第二位置沿Y轴负方向移动的行程可以参阅第一透镜433自第一位置沿Y轴正方向上移动的行程。这里不再赘述。In other embodiments, the travel of the second lens 434 moving from the second position along the negative direction of the Y-axis may refer to the travel of the first lens 433 moving from the first position along the positive direction of the Y-axis. I won't go into details here.

上文结合相关附图具体介绍了对焦镜头43的三种状态。下文将结合对焦镜头43的三种状态来具体介绍这三种状态的几种应用场景。The three states of the focusing lens 43 are specifically described above in conjunction with the relevant drawings. The following will specifically introduce several application scenarios of the three states in combination with the three states of the focusing lens 43 .

请参阅图9b,图9b是图5所示的摄像模组40的部分成像示意图。当环境光线穿过对焦镜头43与定焦镜头44之后，在定焦镜头44的像侧成像。成像的所在平面为成像面。定焦镜头44靠近对焦镜头43的端部与成像面之间的距离为D。定焦镜头44在无穷远对焦的光学总长为TTL。D与TTL之间满足：TTL-10毫米≤D≤TTL+10毫米。例如，D可以等于TTL-10毫米、TTL-7毫米、TTL-5毫米、TTL-2毫米、TTL-1毫米、TTL毫米、TTL+1毫米、TTL+2毫米、TTL+3毫米、TTL+4毫米、TTL+5毫米、TTL+8毫米、TTL+9毫米或者TTL+10毫米。Please refer to FIG. 9b. FIG. 9b is a schematic diagram of a part of the imaging of the camera module 40 shown in FIG. 5 . After the ambient light passes through the focusing lens 43 and the fixed-focus lens 44 , the image is formed on the image side of the fixed-focus lens 44 . The imaging plane is the imaging plane. The distance between the end of the fixed-focus lens 44 close to the focus lens 43 and the imaging surface is D. The total optical length of the fixed focal length lens 44 for focusing at infinity is TTL. Between D and TTL: TTL-10mm≤D≤TTL+10mm. For example, D can be equal to TTL-10mm, TTL-7mm, TTL-5mm, TTL-2mm, TTL-1mm, TTLmm, TTL+1mm, TTL+2mm, TTL+3mm, TTL+ 4mm, TTL+5mm, TTL+8mm, TTL+9mm or TTL+10mm.

可以理解的是，通过设置定焦镜头44与成像面之间的距离D满足上述关系时，从而既可以避免定焦镜头44与成像面之间的距离D因过大而影响实际成像时的光圈值以及增大摄像模组40的体积，又可以避免定焦镜头44与成像面之间的距离D因过小而需要对焦镜头43提供更大的光焦度，进而有利于扩展更大的成像范围。It can be understood that, by setting the distance D between the fixed-focus lens 44 and the imaging surface to satisfy the above relationship, it can be avoided that the distance D between the fixed-focus lens 44 and the imaging surface is too large to affect the actual imaging aperture. It can also prevent the distance D between the fixed-focus lens 44 and the imaging surface from being too small and the focusing lens 43 needs to provide a larger focal power, thereby facilitating the expansion of larger imaging Scope.

另外，当D的尺寸在上述范围内时，对焦镜头43均能够对不同物距的物体进行对焦，从而使得定焦镜头44对不同物距的物体清晰成像。特别是，当TTL毫米＜D≤TTL+10毫米时，传统的光学镜头在无穷远处较难对焦，传统的光学镜头在无穷远处很难实现清晰成像。而在本实施例，当光学镜头在无穷远处对焦时，对焦镜头43的光焦度可以切换至负光焦度，此时，无穷远处的物体能够被定焦镜头清晰地成像。这样，本实施方式的光学镜头的使用性较广，用户的体验性更佳。In addition, when the size of D is within the above range, the focusing lens 43 can focus on objects with different object distances, so that the fixed-focus lens 44 can clearly image objects with different object distances. In particular, when TTL mm<D≤TTL+10 mm, it is difficult for traditional optical lenses to focus at infinity, and it is difficult for traditional optical lenses to achieve clear imaging at infinity. In this embodiment, when the optical lens is focused at infinity, the focal power of the focusing lens 43 can be switched to a negative focal power. At this time, an object at infinity can be clearly imaged by the fixed-focus lens. In this way, the optical lens of the present embodiment has wider usability and better user experience.

在其他实施例中，定焦镜头44与成像面之间的距离D与定焦镜头44在无穷远对焦的光学总长TTL也可以未满足上述关系。In other embodiments, the distance D between the fixed-focus lens 44 and the imaging plane and the total optical length TTL of the fixed-focus lens 44 focusing at infinity may not satisfy the above relationship.

在本实施例中，当D与TTL在不同的关系中，对焦镜头43可以在不同场景下采用不同的光焦度状态来实现对焦，以使定焦镜头44对不同物距的物体清晰成像。具体参阅如下。In this embodiment, when D and TTL are in different relationships, the focusing lens 43 can use different focal power states to achieve focusing in different scenarios, so that the fixed-focus lens 44 can clearly image objects with different object distances. See below for details.

第一种实施方式，当D与TTL满足：TTL毫米＜D≤TTL+10毫米时，摄像模组40可以通过对焦镜头43在以下各场景中实现对焦。请再次参阅图7和图9a，当摄像模组40在无穷远成像时，通过将第一透镜433自第一位置沿Y轴正方向移动，第二透镜434自第二位置沿Y轴负方向移动，从而使得对焦镜头43的光焦度为负值。当第一透镜433与第二透镜434移动至合适的位置时，定焦镜头44能够对无穷远的物体清晰成像。可以理解的是，上述过程为摄像模组40在无穷远处成像时的对焦过程。In the first embodiment, when D and TTL satisfy: TTL mm<D≤TTL+10 mm, the camera module 40 can achieve focusing in the following scenarios through the focusing lens 43 . Please refer to FIG. 7 and FIG. 9a again, when the camera module 40 is imaging at infinity, by moving the first lens 433 from the first position along the positive direction of the Y-axis, the second lens 434 from the second position along the negative direction of the Y-axis move so that the power of the focus lens 43 is a negative value. When the first lens 433 and the second lens 434 are moved to appropriate positions, the fixed-focus lens 44 can clearly image objects at infinity. It can be understood that the above process is a focusing process when the camera module 40 is imaging at infinity.

当用户自无穷远向近距离拍摄时，拍摄物体的物距减小，也即对焦距离拉近。此时，在无穷远处对焦的第一透镜433与第二透镜434已经无法使得定焦镜头44对物体清晰成像。通过将第一透镜433沿Y轴负方向移动，并靠近第一位置，以及第二透镜434沿Y轴正方向移动，并靠近第二位置，以使对焦镜头43的光焦度增大(光焦度依然为负值)，从而实现定焦镜头44对不同物距的物体清晰成像。When the user shoots from infinity to a close distance, the object distance of the photographed object is reduced, that is, the focus distance is shortened. At this time, the first lens 433 and the second lens 434 focusing at infinity cannot make the fixed-focus lens 44 image the object clearly. By moving the first lens 433 in the negative direction of the Y axis and approaching the first position, and moving the second lens 434 in the positive direction of the Y axis and approaching the second position, the power of the focusing lens 43 is increased (light The power is still a negative value), so that the fixed-focus lens 44 can clearly image objects with different object distances.

请再次参阅图7及图8，随着拍摄物体的物距继续减小，也即对焦距离继续拉近。此时，光焦度为负值的对焦镜头43已经无法使得定焦镜头44对物体清晰成像。通过将第一透镜433继续沿Y轴负方向移动，以及第二透镜434继续沿Y轴正方向移动，以使对焦镜头43的光焦度继续增大(光焦度可以经无光焦度变化为正光焦度)，从而使得定焦镜头44能够对不同物距的物体清晰成像。Please refer to FIG. 7 and FIG. 8 again, as the object distance of the photographed object continues to decrease, that is, the focus distance continues to decrease. At this time, the focusing lens 43 with a negative refractive power cannot make the fixed-focus lens 44 image the object clearly. By continuing to move the first lens 433 in the negative direction of the Y-axis and the second lens 434 continuing to move in the positive direction of the Y-axis, the focal power of the focusing lens 43 continues to increase (the focal power can be changed through no focal power). is positive refractive power), so that the fixed-focus lens 44 can clearly image objects with different object distances.

可以理解的是，当D与TTL满足：TTL毫米＜D≤TTL+10毫米时，通过将对焦镜头43的光焦度自负光焦度向正光焦度调节，从而使得定焦镜头44能够对不同物距的物体清晰成像。It can be understood that, when D and TTL satisfy: TTL mm<D≤TTL+10 mm, by adjusting the focal power of the focusing lens 43 from the negative focal power to the positive focal power, the fixed-focus lens 44 can be adjusted to different focal powers. Objects at object distance are clearly imaged.

第二种实施方式，当D与TTL满足：D＝TTL毫米时，摄像模组40可以通过对焦镜头43在以下各场景中实现对焦。请再次参阅图7，当摄像模组40在无穷远成像时，通过将第一透镜433移动至第一位置，将第二透镜434移动至第二位置，从而使得对焦镜头43的光焦度为无光焦度。此时，定焦镜头44能够对无穷远的物体清晰成像。可以理解的是，上述过程为摄像模组40在无穷远处成像时的对焦过程。In the second embodiment, when D and TTL satisfy: D=TTL mm, the camera module 40 can achieve focusing in the following scenarios through the focusing lens 43 . Referring to FIG. 7 again, when the camera module 40 is imaging at infinity, the first lens 433 is moved to the first position and the second lens 434 is moved to the second position, so that the optical power of the focusing lens 43 is No optical power. At this time, the fixed-focus lens 44 can clearly image an object at infinity. It can be understood that the above process is a focusing process when the camera module 40 is imaging at infinity.

请再次参阅图7和图8，当用户自无穷远向近距离拍摄时，拍摄物体的物距减小，也即对焦距离拉近。此时，在无穷远处对焦的第一透镜433与第二透镜434已经无法使得定焦镜头44对物体清晰成像。通过将第一透镜433自第一位置沿Y轴负方向移动，也即远离第一位置，以及第二透镜434自第二位置沿Y轴正方向移动，也即远离第二位置，以使对焦镜头43的光焦度增大(光焦度依然为正值)，从而使得定焦镜头44对不同物距的物体清晰成像。Please refer to FIG. 7 and FIG. 8 again, when the user shoots from infinity to a close distance, the object distance of the photographed object decreases, that is, the focus distance is shortened. At this time, the first lens 433 and the second lens 434 focusing at infinity cannot make the fixed-focus lens 44 image the object clearly. By moving the first lens 433 from the first position in the negative direction of the Y-axis, that is, away from the first position, and the second lens 434 from the second position in the positive direction of the Y-axis, that is, away from the second position, the focusing is achieved. The optical power of the lens 43 is increased (the optical power is still a positive value), so that the fixed-focus lens 44 can clearly image objects with different object distances.

可以理解的是，当D与TTL满足：D＝TTL时，通过将对焦镜头43的光焦度自无光焦度向正光焦度调节，从而使得定焦镜头44能够对不同物距的物体清晰成像。It can be understood that when D and TTL satisfy: D=TTL, by adjusting the focal power of the focusing lens 43 from no focal power to positive focal power, the fixed focal lens 44 can clear objects with different object distances. imaging.

第三种实施方式，当D与TTL满足：TTL-10毫米≤D＜TTL时，摄像模组40可以通过对焦镜头43在以下各场景中实现对焦。请再次参阅图7及图8，当摄像模组40在无穷远成像时，通过将第一透镜433自第一位置沿Y轴负方向移动，第二透镜434自第二位置沿Y轴正方向移动，从而使得对焦镜头43的光焦度为正值。当第一透镜433与第二透镜434移动至合适的位置时，定焦镜头44能够对无穷远的物体清晰成像。可以理解的是，上述过程为摄像模组40在无穷远处成像时的对焦过程。In the third embodiment, when D and TTL satisfy: TTL-10 mm≦D<TTL, the camera module 40 can achieve focusing in the following scenarios through the focusing lens 43 . Please refer to FIG. 7 and FIG. 8 again, when the camera module 40 is imaging at infinity, by moving the first lens 433 from the first position along the negative direction of the Y-axis, the second lens 434 from the second position along the positive direction of the Y-axis move so that the power of the focus lens 43 is a positive value. When the first lens 433 and the second lens 434 are moved to appropriate positions, the fixed-focus lens 44 can clearly image objects at infinity. It can be understood that the above process is a focusing process when the camera module 40 is imaging at infinity.

当用户自无穷远向近距离拍摄时，拍摄物体的物距减小，也即对焦距离拉近。此时，在无穷远处对焦的第一透镜433与第二透镜434已经无法使得定焦镜头44对物体清晰成像。通过将第一透镜433继续沿Y轴负方向移动，以及第二透镜434继续沿Y轴正方向移动，以使对焦镜头43的光焦度增大(光焦度依然为正值)，从而使得定焦镜头44对不同物距的物体清晰成像。When the user shoots from infinity to a close distance, the object distance of the photographed object is reduced, that is, the focus distance is shortened. At this time, the first lens 433 and the second lens 434 focusing at infinity cannot make the fixed-focus lens 44 image the object clearly. By continuing to move the first lens 433 in the negative direction of the Y-axis, and the second lens 434 continuing to move in the positive direction of the Y-axis, the focal power of the focusing lens 43 is increased (the focal power is still a positive value), so that the The fixed-focus lens 44 can clearly image objects with different object distances.

可以理解的是，当D与TTL满足：TTL-10毫米≤D＜TTL毫米时，通过改变对焦镜头43的正光焦度的大小，从而使得定焦镜头44能够对不同物距的物体清晰成像。It can be understood that when D and TTL satisfy: TTL-10 mm≤D<TTL mm, by changing the size of the positive refractive power of the focus lens 43, the fixed focus lens 44 can clearly image objects with different object distances.

由上文可知，本实施例结合相关附图具体介绍了一种摄像模组40的结构、对焦镜头43的三种状态及其几种应用场景。可以理解的是，摄像模组40的对焦方式与传统摄像模组的对焦方式不同。本实施例通过第一驱动部431驱动第一透镜433沿Y轴方向移动，第二驱动部432驱动第二透镜434沿Y轴方向移动，从而实现摄像模组40的对焦。一方面，本实施方式的摄像模组40无需通过马达带动整个镜头沿X轴方向移动。此时，马达430的推力较小，马达430的能耗较低，摄像模组40的拍摄时长较长。另一方面，当传统的摄像模组的等效焦距大于40毫米时，传统的摄像模组为了能够在短物距的物体成像，镜头的移动行程较大。此时，传统的摄像模组在X轴方向的长度整体较大。而本实施方式的摄像模组40通过对焦镜头43对焦，对焦镜头43无需在X轴方向移动镜头。这样，摄像模组40在X轴方向的尺寸可以做得较小，从而使得摄像模组40在X轴方向可以实现小型化设置。As can be seen from the above, this embodiment specifically introduces the structure of a camera module 40 , three states of the focusing lens 43 and several application scenarios thereof in conjunction with the relevant drawings. It can be understood that the focusing method of the camera module 40 is different from that of the conventional camera module. In this embodiment, the first driving part 431 drives the first lens 433 to move along the Y-axis direction, and the second driving part 432 drives the second lens 434 to move along the Y-axis direction, so as to realize the focusing of the camera module 40 . On the one hand, the camera module 40 of this embodiment does not need to use a motor to drive the entire lens to move along the X-axis direction. At this time, the thrust of the motor 430 is small, the energy consumption of the motor 430 is low, and the shooting time of the camera module 40 is long. On the other hand, when the equivalent focal length of the conventional camera module is greater than 40 mm, in order to be able to image an object with a short object distance, the conventional camera module has a larger moving stroke of the lens. At this time, the length of the conventional camera module in the X-axis direction is generally relatively large. However, in the camera module 40 of the present embodiment, the focusing lens 43 is used for focusing, and the focusing lens 43 does not need to move the lens in the X-axis direction. In this way, the size of the camera module 40 in the X-axis direction can be made smaller, so that the camera module 40 can be miniaturized in the X-axis direction.

另外，本实施例通过将反射装置42、对焦镜头43、定焦镜头44、滤光片45、模组电路板46以及感光芯片47设置成一个整体，从而显著提高摄像模组40的整体性。这样，当摄像模组40应用于电子设备100时，电子设备100更加简洁，整体性更佳。In addition, in this embodiment, the reflective device 42 , the focusing lens 43 , the fixed-focus lens 44 , the filter 45 , the module circuit board 46 and the photosensitive chip 47 are arranged as a whole, thereby significantly improving the integrity of the camera module 40 . In this way, when the camera module 40 is applied to the electronic device 100 , the electronic device 100 is more compact and has better integrity.

下文将结合上文中所示意的摄像模组40的结构(可参阅图1至图9b)来具体介绍一下摄像模组40的光学***几种设置方式。可以理解的是，通过设置摄像模组40的光学***，从而保证摄像模组40能够拍摄出较佳的图像。Hereinafter, in conjunction with the structure of the camera module 40 shown above (refer to FIG. 1 to FIG. 9b ), several setting methods of the optical system of the camera module 40 will be introduced in detail. It can be understood that, by setting the optical system of the camera module 40 , it is ensured that the camera module 40 can capture a better image.

一种实施方式中，在X轴方向上，第一透镜433与第二透镜434之间的距离在0.1毫米至2毫米的范围内。例如，第一透镜433与第二透镜434之间的距离可以为0.1毫米、0.2毫米、0.8毫米、1毫米、1.2毫米、1.5毫米或者2毫米。In one embodiment, in the X-axis direction, the distance between the first lens 433 and the second lens 434 is in the range of 0.1 mm to 2 mm. For example, the distance between the first lens 433 and the second lens 434 may be 0.1 mm, 0.2 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm or 2 mm.

可以理解的是，通过将第一透镜433与第二透镜434之间的距离设置在该尺寸范围内，从而既可以避免第一透镜433与第二透镜434之间的距离因过小而增大第一透镜433与第二透镜434在移动过程中发生碰撞的风险，又可以避免第一透镜433与第二透镜434之间的距离因过大而导致空气间隙引起的像差，又可以避免第一透镜433与第二透镜434之间的距离因过大而导致反射装置的尺寸增大，进而有利于三棱镜422的制造以及小型化设置。It can be understood that, by setting the distance between the first lens 433 and the second lens 434 within this size range, the distance between the first lens 433 and the second lens 434 can be avoided from being too small to increase The risk of collision between the first lens 433 and the second lens 434 during the moving process can avoid the aberration caused by the air gap caused by the excessive distance between the first lens 433 and the second lens 434, and can avoid the first lens 433 and the second lens 434. Because the distance between the first lens 433 and the second lens 434 is too large, the size of the reflecting device increases, which is beneficial to the manufacture and miniaturization of the triangular prism 422 .

一种实施方式中，在X轴方向上，第二透镜434与定焦镜头44之间的距离在0.1毫米至5毫米的范围内。例如，第二透镜434与定焦镜头44之间的距离可以为0.1毫米、0.5毫米、 1毫米、2毫米、3毫米、4毫米或者5毫米。In one embodiment, in the X-axis direction, the distance between the second lens 434 and the fixed-focus lens 44 is in the range of 0.1 mm to 5 mm. For example, the distance between the second lens 434 and the prime lens 44 may be 0.1 mm, 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm or 5 mm.

可以理解的是，通过将第二透镜434与定焦镜头44之间的距离设置在该尺寸范围内，从而既可以避免第二透镜434与定焦镜头44之间的距离因过小而增大第二透镜434与定焦镜头44间的碰撞风险，又可以避免第二透镜434与定焦镜头44之间的距离因过大而导致三棱镜422的尺寸显著增大，进而有利于三棱镜422的制造以及小型化设置。It can be understood that, by setting the distance between the second lens 434 and the fixed-focus lens 44 within this size range, it is possible to avoid the distance between the second lens 434 and the fixed-focus lens 44 being too small to increase The risk of collision between the second lens 434 and the fixed focal lens 44 can also be avoided, and the distance between the second lens 434 and the fixed focal lens 44 can be avoided, which will lead to a significant increase in the size of the triangular prism 422 , thereby facilitating the manufacture of the triangular prism 422 and miniaturization settings.

一种实施方式中，第一透镜433的阿贝数v _f1满足：20≤v _f1≤60。例如，v _f1可以为20、22、27、30、40、50、52、56或者60。可以理解的是，当第一透镜433的阿贝数v _f1满足该尺寸时，第一透镜433引起的成像色差可以显著减小。 In one embodiment, the Abbe number v _f1 of the first lens 433 satisfies: 20≦v _f1 ≦60. For example, v _f1 may be 20, 22, 27, 30, 40, 50, 52, 56, or 60. It can be understood that when the Abbe number v _f1 of the first lens 433 satisfies this size, the imaging chromatic aberration caused by the first lens 433 can be significantly reduced.

一种实施方式中，第二透镜434的阿贝数v _f2满足：20≤v _f2≤60。例如，v _f2可以为20、22、27、30、40、50、52、56或者60。可以理解的是，当第二透镜434的阿贝数v _f2满足该尺寸时，第二透镜434引起的成像色差可以显著减小。 In one embodiment, the Abbe number v _f2 of the second lens 434 satisfies: 20≦v _f2 ≦60. For example, v _f2 can be 20, 22, 27, 30, 40, 50, 52, 56, or 60. It can be understood that when the Abbe number v _f2 of the second lens 434 satisfies this size, the imaging chromatic aberration caused by the second lens 434 can be significantly reduced.

一种实施方式中，摄像模组40(也即光学镜头)的成像距离的范围为10毫米至无穷远。可以理解的是，相较于传统摄像模组40的最小成像距离0.5米，本实施方式的摄像模组40的最小成像距离可以达到10毫米。此时，本实施方式的摄像模组40的成像范围更大，实用性更广，用户的体验性更佳。In one embodiment, the imaging distance of the camera module 40 (ie, the optical lens) ranges from 10 mm to infinity. It can be understood that, compared with the minimum imaging distance of the conventional camera module 40 of 0.5 meters, the minimum imaging distance of the camera module 40 of this embodiment can reach 10 mm. At this time, the imaging range of the camera module 40 of this embodiment is wider, the practicability is wider, and the user experience is better.

一种实施方式中，第一透镜433与第二透镜434可以为塑料材质、玻璃材质或者其它的复合材料。其中，塑料材质能够容易的制得各种形状复杂的透镜结构。玻璃材质的透镜的折射率n1满足：1.50≤n1≤1.90，其相对于塑料透镜的折射率范围(1.55-1.65)来说，折射率可选择的范围较大，更容易得到较薄但性能较好的玻璃透镜，有利于减小对焦镜头43的轴上厚度，不容易制得形状复杂的透镜结构。因此，本申请的一些实施方式中，考虑制作成本、效率以及光学效果，根据需要合理的搭配不同透镜的具体应用材质。In one embodiment, the first lens 433 and the second lens 434 may be made of plastic material, glass material or other composite materials. Among them, the plastic material can easily produce various lens structures with complex shapes. The refractive index n1 of the lens made of glass satisfies: 1.50≤n1≤1.90. Compared with the refractive index range of the plastic lens (1.55-1.65), the refractive index can be selected in a larger range, and it is easier to obtain thinner but better performance. A good glass lens is beneficial to reduce the on-axis thickness of the focusing lens 43, and it is not easy to manufacture a lens structure with a complex shape. Therefore, in some embodiments of the present application, considering the manufacturing cost, efficiency and optical effect, the specific application materials of different lenses are reasonably matched as required.

一种实施方式中，第一透镜433的物侧面4331与像侧面4332均为自由曲面。第二透镜434的物侧面4341与像侧面4342也均为自由曲面。自由曲面满足：In one embodiment, the object side surface 4331 and the image side surface 4332 of the first lens 433 are both free-form surfaces. The object side surface 4341 and the image side surface 4342 of the second lens 434 are also free-form surfaces. Freeform surfaces satisfy:

其中，z为所述自由曲面的矢高。r为摄像模组40的光轴方向上的半径高度。c为曲率半径。k为圆锥系数。N为级数中多项式系数的总数。E _i(x,y)是x，y方向的幂级数。A _i是多项式系数；n为正整数。a与b为偶数。 Wherein, z is the vector height of the free-form surface. r is the height of the radius in the optical axis direction of the camera module 40 . c is the radius of curvature. k is the conic coefficient. N is the total number of polynomial coefficients in the series. E _i (x, y) is the power series in the x, y direction. A _i is a polynomial coefficient; n is a positive integer. a and b are even numbers.

这样，由于x的幂和y的幂只使用偶次项,自由曲面可以关于YZ平面的对称。In this way, since only even terms are used for the powers of x and y, the free-form surface can be symmetric about the YZ plane.

下面将结合相关附图更加详细地描述本申请实施方式的一些具体的而非限制性的例子。Some specific but non-limiting examples of the embodiments of the present application will be described in more detail below with reference to the related drawings.

第一种实施方式，请再次参阅图10a，图10a是图5所示的第一透镜433与第二透镜434的一种实施方式的结构示意图。第一透镜433的物侧面4331与像侧面4332均为自由曲面。第二透镜434的物侧面4341与像侧面4342也均为自由曲面。第一种实施方式的第一透镜433与第二透镜434的设计参数如下表1。For the first embodiment, please refer to FIG. 10a again. FIG. 10a is a schematic structural diagram of an embodiment of the first lens 433 and the second lens 434 shown in FIG. 5 . Both the object side surface 4331 and the image side surface 4332 of the first lens 433 are free curved surfaces. The object side surface 4341 and the image side surface 4342 of the second lens 434 are also free-form surfaces. The design parameters of the first lens 433 and the second lens 434 of the first embodiment are shown in Table 1 below.

表1第一种实施方式的第一透镜433与第二透镜434的设计参数Table 1 Design parameters of the first lens 433 and the second lens 434 of the first embodiment

面号face number	表面类型surface type	曲率半径Radius of curvature	厚度thickness	材质material
S1S1	XY多项式XY polynomial	无限unlimited	0.80.8	APL5014APL5014

S2S2	XY多项式XY polynomial	无限unlimited	0.30.3
S3S3	XY多项式XY polynomial	无限unlimited	0.80.8	APL5014APL5014
S4S4	XY多项式XY polynomial	无限unlimited	--

其中，S1表示第一透镜433的物侧面4331。S2表示第一透镜433的像侧面4332。S3表示第二透镜434的物侧面4341。S4表示第二透镜434的像侧面4342。另外，S1的厚度指的是第一透镜433的物侧面4331与第一透镜433的像侧面4332之间的距离。S2的厚度指的是第一透镜433的像侧面4332与第二透镜434的物侧面4341之间的距离。S3的厚度指的是第二透镜434的物侧面4341与第二透镜434的像侧面4342之间的距离。APL5014指的是折射率大致为1.54，阿贝数大致为55.9的塑料。Among them, S1 represents the object side surface 4331 of the first lens 433 . S2 represents the image side surface 4332 of the first lens 433 . S3 represents the object side surface 4341 of the second lens 434 . S4 represents the image side surface 4342 of the second lens 434 . In addition, the thickness of S1 refers to the distance between the object side surface 4331 of the first lens 433 and the image side surface 4332 of the first lens 433 . The thickness of S2 refers to the distance between the image side surface 4332 of the first lens 433 and the object side surface 4341 of the second lens 434 . The thickness of S3 refers to the distance between the object side surface 4341 of the second lens 434 and the image side surface 4342 of the second lens 434 . APL5014 refers to a plastic with a refractive index of approximately 1.54 and an Abbe number of approximately 55.9.

另外，第一种实施方式的第一透镜433与第二透镜434中的自由曲面的设计参数如下表2。In addition, the design parameters of the free-form surfaces in the first lens 433 and the second lens 434 of the first embodiment are as shown in Table 2 below.

表2第一种实施方式的第一透镜433与第二透镜434的自由曲面的设计参数Table 2 Design parameters of the free-form surfaces of the first lens 433 and the second lens 434 in the first embodiment

参数parameter	S1S1	S2S2	S3S3	S4S4
A ₁ A ₁	00	00	00	00
A ₂ A ₂	-1.98E-03-1.98E-03	-3.24E-03-3.24E-03	-1.89E-02-1.89E-02	-1.75E-02-1.75E-02
A ₃ _A3	8.00E-038.00E-03	5.31E-035.31E-03	-1.68E-02-1.68E-02	-1.40E-02-1.40E-02
A ₄ A ₄	2.12E-032.12E-03	1.06E-021.06E-02	1.13E-021.13E-02	2.65E-032.65E-03
A ₅ A ₅	1.01E-031.01E-03	4.00E-034.00E-03	3.70E-033.70E-03	6.88E-046.88E-04
A ₆ A ₆	-1.30E-04-1.30E-04	1.79E-051.79E-05	3.90E-043.90E-04	2.44E-042.44E-04
A ₇ A ₇	-3.74E-04-3.74E-04	-3.56E-04-3.56E-04	4.44E-044.44E-04	4.62E-044.62E-04
A ₈ A ₈	4.83E-054.83E-05	6.31E-056.31E-05	4.15E-054.15E-05	3.65E-053.65E-05
A ₉ A ₉	-7.71E-05-7.71E-05	-4.91E-05-4.91E-05	-8.47E-05-8.47E-05	-1.04E-04-1.04E-04
A ₁₀ A ₁₀	-1.40E-04-1.40E-04	-1.35E-04-1.35E-04	-1.85E-04-1.85E-04	-1.74E-04-1.74E-04
A ₁₁ A ₁₁	-4.81E-05-4.81E-05	-5.50E-05-5.50E-05	-6.50E-05-6.50E-05	-5.50E-05-5.50E-05
A ₁₂ A ₁₂	9.50E-069.50E-06	8.93E-068.93E-06	-1.43E-05-1.43E-05	-1.34E-05-1.34E-05

其中，A ₁、A ₂、A ₃、……、A ₁₀、A ₁₁以及A ₁₂等符号表示多项式系数。通过将上述参数代入至公 Among them, symbols such as A ₁ , A ₂ , A ₃ , . . . , A ₁₀ , A ₁₁ , and A ₁₂ represent polynomial coefficients. By substituting the above parameters into the common

式：

Mode:

其中，n为正整数，a与b为偶数，能够设计得到本实施方式的第一透镜433的物侧面4331与像侧面4332，以及第二透镜434的物侧面4341与像侧面4342的面型。Among them, n is a positive integer, and a and b are even numbers. The object side surface 4331 and the image side surface 4332 of the first lens 433 and the object side surface 4341 and the image side surface 4342 of the second lens 434 in this embodiment can be designed and obtained.

其中，本实施方式中，z为自由曲面的矢高。N为级数中多项式系数的总数。r为光轴方向的半径高度。c为曲率半径。k为圆锥系数。E _i(x,y)是x，y方向的幂级数。A _i是多项式系数。x的幂和y的幂只使用偶次项，以使得自由曲面可以关于YZ平面的对称。另外，表格中不存在的多项式系数(如A ₁₃、A ₁₄等)均为0。 Here, in this embodiment, z is the vector height of the free-form surface. N is the total number of polynomial coefficients in the series. r is the height of the radius in the direction of the optical axis. c is the radius of curvature. k is the conic coefficient. E _i (x, y) is the power series in the x, y direction. A _i are polynomial coefficients. Only even terms are used for powers of x and y, so that freeform surfaces can be symmetric about the YZ plane. In addition, the polynomial coefficients (such as A ₁₃ , A ₁₄ , etc.) that do not exist in the table are all 0.

请参阅图10b，图10b是图10a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为2米，视场为0的调制传递函数(modulation transfer function，MTF)曲线图。其中，图10b的横坐标为空间频率，单位为周期/mm。图10b的纵坐标是光学传递函数(optical transfer function，OTF)模值。可以理解的是，下文中的各个MTF曲线图的横坐标、纵坐标均相同，下文将不再赘述。另外，图10b的实线表示的是摄像模组40在弧矢方向的MTF曲线。图10b的虚线表示的是摄像模组40在子午方向的MTF曲线。需要说明的是，由于两条曲线基本重叠，附图10b大致呈现一条曲线。Please refer to FIG. 10b. FIG. 10b is a modulation transfer function (MTF) of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 10a when the object distance is 2 meters and the field of view is 0 )Graph. Among them, the abscissa of Fig. 10b is the spatial frequency, and the unit is period/mm. The ordinate of Fig. 10b is the optical transfer function (OTF) modulus value. It can be understood that the abscissa and ordinate of each MTF graph below are the same, which will not be repeated below. In addition, the solid line in FIG. 10b represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 10b represents the MTF curve of the camera module 40 in the meridional direction. It should be noted that, since the two curves basically overlap, FIG. 10b roughly presents a curve.

由图10b可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为2米，视场为0的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。It can be seen from FIG. 10b that, no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 2 meters and the field of view is 0, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图10c，图10c是图10a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为2米，视场为0.8的MTF曲线图。其中，图10c的实线表示的是摄像模组40在弧矢方向的MTF曲线。图10c的虚线表示的是摄像模组40在子午方向的MTF曲线。由图10c可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为2米，视场为0.8的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。Please refer to FIG. 10c. FIG. 10c is an MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 10a when the object distance is 2 meters and the field of view is 0.8. The solid line in FIG. 10c represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 10c represents the MTF curve of the camera module 40 in the meridional direction. It can be seen from FIG. 10c that, no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 2 meters and the field of view is 0.8, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图10d，图10d是图10a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为1米，视场为0的MTF曲线图。其中，图10d的实线表示的是摄像模组40在弧矢方向的MTF曲线。图10d的虚线表示的是摄像模组40在子午方向的MTF曲线。需要说明的是，由于两条曲线基本重叠，附图10d大致呈现一条曲线。Please refer to FIG. 10d . FIG. 10d is an MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 10 a when the object distance is 1 meter and the field of view is 0. The solid line in FIG. 10d represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 10d represents the MTF curve of the camera module 40 in the meridional direction. It should be noted that, since the two curves basically overlap, FIG. 10d roughly presents a curve.

由图10d可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为1米，视场为0的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。It can be seen from FIG. 10d that, no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 1 meter and the field of view is 0, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图10e，图10e是图10a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为1米，视场为0.8的MTF曲线图。其中，图10e的实线表示的是摄像模组40在弧矢方向的MTF曲线。图10e的虚线表示的是摄像模组40在子午方向的MTF曲线。由图10e可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为1米，视场为0.8的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。Please refer to FIG. 10e. FIG. 10e is a MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 10a when the object distance is 1 meter and the field of view is 0.8. The solid line in FIG. 10e represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 10e represents the MTF curve of the camera module 40 in the meridional direction. It can be seen from FIG. 10e that, no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 1 meter and the field of view is 0.8, the imaging quality is better in both the sagittal direction and the meridional direction.

根据图10b至图10e可知，摄像模组40均能够对不同物距下的物体清晰成像。It can be seen from FIGS. 10b to 10e that the camera module 40 can clearly image objects at different object distances.

第二种实施方式，请参阅图11a，图11a是图5所示的第一透镜433与第二透镜434的另一种实施方式的结构示意图。第一透镜433的物侧面4331与像侧面4332均为自由曲面。第二透镜434的物侧面4341为自由曲面。第二透镜434的像侧面4342为平面。第二种实施方式的第一透镜433与第二透镜434的设计参数如下表3。For the second embodiment, please refer to FIG. 11a , which is a schematic structural diagram of another embodiment of the first lens 433 and the second lens 434 shown in FIG. 5 . Both the object side surface 4331 and the image side surface 4332 of the first lens 433 are free curved surfaces. The object side surface 4341 of the second lens 434 is a free-form surface. The image side surface 4342 of the second lens 434 is flat. The design parameters of the first lens 433 and the second lens 434 of the second embodiment are listed in Table 3 below.

表3第二种实施方式的第一透镜433与第二透镜434的设计参数Table 3 Design parameters of the first lens 433 and the second lens 434 of the second embodiment

面号face number	表面类型surface type	曲率半径Radius of curvature	厚度thickness	材质material
S1S1	XY多项式XY polynomial	无限unlimited	0.80.8	APL5014APL5014
S2S2	XY多项式XY polynomial	无限unlimited	0.30.3
S3S3	XY多项式XY polynomial	无限unlimited	0.80.8	APL5014APL5014
S4S4	平面flat	无限unlimited	--

另外，第二种实施方式的第一透镜433与第二透镜434的自由曲面的系数的设计参数如下表4。In addition, the design parameters of the coefficients of the free-form surfaces of the first lens 433 and the second lens 434 in the second embodiment are as follows in Table 4.

表4第二种实施方式的第一透镜433与第二透镜434的自由曲面的设计参数Table 4 Design parameters of the free-form surfaces of the first lens 433 and the second lens 434 in the second embodiment

参数parameter	S1S1	S2S2	S3S3
A ₁ A ₁	00	00	00
A ₂ A ₂	5.17E-035.17E-03	7.99E-037.99E-03	2.62E-032.62E-03
A ₃ _A3	1.63E-021.63E-02	1.61E-021.61E-02	-4.90E-04-4.90E-04
A ₄ A ₄	4.64E-034.64E-03	1.22E-021.22E-02	7.51E-037.51E-03
A ₅ A ₅	1.39E-031.39E-03	3.96E-033.96E-03	2.54E-032.54E-03
A ₆ A ₆	3.13E-043.13E-04	8.95E-048.95E-04	5.70E-045.70E-04
A ₇ A ₇	-3.00E-04-3.00E-04	-2.44E-04-2.44E-04	8.59E-068.59E-06
A ₈ A ₈	-2.46E-05-2.46E-05	-9.27E-06-9.27E-06	8.12E-068.12E-06
A ₉ A ₉	-1.05E-04-1.05E-04	-1.06E-04-1.06E-04	-1.11E-05-1.11E-05
A ₁₀ A ₁₀	-1.48E-04-1.48E-04	-1.47E-04-1.47E-04	-1.55E-05-1.55E-05
A ₁₁ A ₁₁	-3.57E-05-3.57E-05	-3.55E-05-3.55E-05	-3.79E-06-3.79E-06
A ₁₂ A ₁₂	-2.43E-05-2.43E-05	-5.45E-05-5.45E-05	-3.01E-05-3.01E-05

式：

Mode:

其中，n为正整数，a与b为偶数，能够设计得到本实施方式的第一透镜433的物侧面4331与像侧面4332的面型，以及第二透镜434的物侧面4341的面型。Where n is a positive integer, and a and b are even numbers, the surface shapes of the object side surface 4331 and the image side surface 4332 of the first lens 433 and the surface shape of the object side surface 4341 of the second lens 434 in this embodiment can be designed.

请参阅图11b，图11b是图11a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为2米，视场为0的MTF曲线图。其中，图11b的实线表示的是摄像模组40在弧矢方向的MTF曲线。图11b的虚线表示的是摄像模组40在子午方向的MTF曲线。需要说明的是，由于两条曲线基本重叠，附图11b大致呈现一条曲线。Please refer to FIG. 11b. FIG. 11b is a MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 11a when the object distance is 2 meters and the field of view is 0. The solid line in FIG. 11 b represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 11b represents the MTF curve of the camera module 40 in the meridional direction. It should be noted that, since the two curves basically overlap, FIG. 11b roughly presents a curve.

由图11b可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为2米，视场为0的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。It can be seen from FIG. 11b that, no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 2 meters and the field of view is 0, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图11c，图11c是图11a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为2米，视场为0.8的MTF曲线图。其中，图11c的实线表示的是摄像模组40在弧矢方向的MTF曲线。图11c的虚线表示的是摄像模组40在子午方向的MTF曲线。由图11c可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为2米，视场为0.8的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。Please refer to FIG. 11c . FIG. 11c is a MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 11a when the object distance is 2 meters and the field of view is 0.8. The solid line in FIG. 11c represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 11c represents the MTF curve of the camera module 40 in the meridional direction. It can be seen from FIG. 11c that no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 2 meters and the field of view is 0.8, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图11d，图11d是图11a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为1米，视场为0的MTF曲线图。其中，图11d的实线表示的是摄像模组40在弧矢方向的MTF曲线。图11d的虚线表示的是摄像模组40在子午方向的MTF曲线。需要说明的是，由于两条曲线基本重叠，附图11d大致呈现一条曲线。Please refer to FIG. 11d . FIG. 11d is an MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 11 a when the object distance is 1 meter and the field of view is 0. The solid line in FIG. 11d represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 11d represents the MTF curve of the camera module 40 in the meridional direction. It should be noted that, since the two curves basically overlap, FIG. 11d roughly presents a curve.

由图11d可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为1米，视场为0的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。It can be seen from FIG. 11d that, no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 1 meter and the field of view is 0, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图11e，图11e是图11a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为1米，视场为0.8的MTF曲线图。其中，图11e的实线表示的是摄像模组40在弧矢方向的MTF曲线。图11e的虚线表示的是摄像模组40在子午方向的MTF曲线。由图11e可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为1米，视场为0.8的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。Please refer to FIG. 11e . FIG. 11e is a MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 11a when the object distance is 1 meter and the field of view is 0.8. The solid line in FIG. 11e represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 11e represents the MTF curve of the camera module 40 in the meridional direction. It can be seen from FIG. 11e that, no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 1 meter and the field of view is 0.8, the imaging quality is better in both the sagittal direction and the meridional direction.

根据图11b至图11e可知，摄像模组40均能够对不同物距下的物体清晰成像。According to FIGS. 11 b to 11 e , the camera module 40 can clearly image objects at different object distances.

第三种实施方式，请参阅图12a，图12a是图5所示的第一透镜433与第二透镜434的再一种实施方式的结构示意图。第一透镜433的像侧面4332与第二透镜434的物侧面4341为自由曲面。第一透镜433的物侧面4331与第二透镜434的像侧面4342为平面。本申请第三种实施方式的第一透镜433与第二透镜434的设计参数如下表5。For the third embodiment, please refer to FIG. 12a , which is a schematic structural diagram of still another embodiment of the first lens 433 and the second lens 434 shown in FIG. 5 . The image side surface 4332 of the first lens 433 and the object side surface 4341 of the second lens 434 are free-form surfaces. The object side surface 4331 of the first lens 433 and the image side surface 4342 of the second lens 434 are planes. The design parameters of the first lens 433 and the second lens 434 of the third embodiment of the present application are as follows in Table 5.

表5第三种实施方式的第一透镜433与第二透镜434的设计参数Table 5 Design parameters of the first lens 433 and the second lens 434 of the third embodiment

面号face number	表面类型surface type	曲率半径Radius of curvature	厚度thickness	材质material
S1S1	平面flat	无限unlimited	0.650.65	EP7000EP7000
S2S2	XY多项式XY polynomial	无限unlimited	0.050.05
S3S3	XY多项式XY polynomial	无限unlimited	0.650.65	EP7000EP7000
S4S4	平面flat	无限unlimited	--

其中，EP7000指的是折射率大致为1.65，阿贝数大致为21.5的树脂材料。Among them, EP7000 refers to a resin material with a refractive index of approximately 1.65 and an Abbe number of approximately 21.5.

另外，第三种实施方式的第一透镜433与第二透镜434中的自由曲面的系数的设计参数如下表6。In addition, the design parameters of the coefficients of the free-form surfaces in the first lens 433 and the second lens 434 of the third embodiment are as shown in Table 6 below.

表6第三种实施方式的第一透镜433与第二透镜434的自由曲面的系数的设计参数Table 6 Design parameters of the coefficients of the free-form surfaces of the first lens 433 and the second lens 434 of the third embodiment

参数parameter	S1S1	S2S2
A ₁ A ₁	-5.12E-002-5.12E-002	-5.29E-002-5.29E-002
A ₂ A ₂	1.62E-0021.62E-002	1.62E-0021.62E-002
A ₃ _A3	1.01E-0041.01E-004	2.04E-0042.04E-004
A ₄ A ₄	5.13E-0035.13E-003	5.24E-0035.24E-003
A ₅ A ₅	1.52E-0031.52E-003	1.57E-0031.57E-003
A ₆ A ₆	4.04E-0044.04E-004	3.55E-0043.55E-004
A ₇ A ₇	5.06E-0045.06E-004	4.25E-0044.25E-004

其中，A ₁、A ₂、A ₃、……、A ₆以及A ₇等符号表示多项式系数。通过将上述参数代入至公式： Among them, symbols such as A ₁ , A ₂ , A ₃ , . . . , A ₆ and A ₇ represent polynomial coefficients. By substituting the above parameters into the formula:

其中，n为正整数，a与b为偶数，能够设计得到本实施方式的第一透镜433的像侧面4332的面型，以及第二透镜434的物侧面4341的面型。Here, n is a positive integer, a and b are even numbers, and the surface shape of the image side surface 4332 of the first lens 433 and the surface shape of the object side surface 4341 of the second lens 434 in this embodiment can be designed.

请参阅图12b，图12b是图12a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为2米，视场为0的MTF曲线图。其中，图12b的实线表示的是摄像模组40在弧矢方向的MTF曲线。图12b的虚线表示的是摄像模组40在子午方向的MTF曲线。需要说明的是，由于两条曲线基本重叠，附图12b大致呈现一条曲线。Please refer to FIG. 12b. FIG. 12b is an MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 12a when the object distance is 2 meters and the field of view is 0. The solid line in FIG. 12b represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 12b represents the MTF curve of the camera module 40 in the meridional direction. It should be noted that, since the two curves basically overlap, FIG. 12b roughly presents a curve.

由图12b可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为2米，视场为0的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。It can be seen from FIG. 12b that no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 2 meters and the field of view is 0, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图12c，图12c是图12a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为2米，视场为0.8的MTF曲线图。其中，图12c的实线表示的是摄像模组40在弧矢方向的MTF曲线。图12c的虚线表示的是摄像模组40在子午方向的MTF曲线。由图12c可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为2米，视场为0.8的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。Please refer to FIG. 12c. FIG. 12c is a MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 12a when the object distance is 2 meters and the field of view is 0.8. The solid line in FIG. 12c represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 12c represents the MTF curve of the camera module 40 in the meridional direction. It can be seen from FIG. 12c that, no matter in the sagittal direction or in the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 2 meters and the field of view is 0.8, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图12d，图12d是图12a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为1米，视场为0的MTF曲线图。其中，图12d的实线表示的是摄像模组40在弧矢方向的MTF曲线。图12d的虚线表示的是摄像模组40在子午方向的MTF曲线。Please refer to FIG. 12d . FIG. 12d is an MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 12 a when the object distance is 1 meter and the field of view is 0. The solid line in FIG. 12d represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 12d represents the MTF curve of the camera module 40 in the meridional direction.

由图12d可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为1米，视场为0的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。It can be seen from FIG. 12d that no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 1 meter and the field of view is 0, the imaging quality is better regardless of the sagittal direction or the meridional direction.

请参阅图12e，图12e是图12a所示的第一透镜433与第二透镜434所对应的摄像模组40在物距为1米，视场为0.8的MTF曲线图。其中，图12e的实线表示的是摄像模组40在弧矢方向的MTF曲线。图12e的虚线表示的是摄像模组40在子午方向的MTF曲线。由图12e可知，不管在弧矢方向，还是在子午方向，摄像模组40的成像在0至125频率范围内的OTF模值均大于0.6。故而，在物距为1米，视场为0.8的环境下，不管是弧矢方向还是子午方向，成像质量均较佳。Please refer to FIG. 12e . FIG. 12e is a MTF curve diagram of the camera module 40 corresponding to the first lens 433 and the second lens 434 shown in FIG. 12a when the object distance is 1 meter and the field of view is 0.8. The solid line in FIG. 12e represents the MTF curve of the camera module 40 in the sagittal direction. The dotted line in FIG. 12e represents the MTF curve of the camera module 40 in the meridional direction. It can be seen from FIG. 12e that, no matter in the sagittal direction or the meridional direction, the OTF modulus value of the imaging of the camera module 40 in the frequency range of 0 to 125 is greater than 0.6. Therefore, in the environment where the object distance is 1 meter and the field of view is 0.8, the imaging quality is better regardless of the sagittal direction or the meridional direction.

以上，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art who is familiar with the technical scope disclosed in the present application can easily think of changes or replacements, which should cover within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

一种光学镜头，其特征在于，包括定焦镜头和对焦镜头，所述对焦镜头位于所述定焦镜头的物侧；An optical lens, characterized in that it includes a fixed-focus lens and a focus lens, and the focus lens is located on the object side of the fixed-focus lens;

所述对焦镜头包括马达、第一透镜以及第二透镜，所述第二透镜位于所述第一透镜的像侧，其中，所述第二透镜与所述第一透镜的相对位置发生变化时，所述对焦镜头的光焦度变化；The focusing lens includes a motor, a first lens and a second lens, the second lens is located on the image side of the first lens, wherein when the relative position of the second lens and the first lens changes, the optical power change of the focusing lens;

所述马达包括第一驱动部和第二驱动部，所述第一驱动部连接所述第一透镜，所述第一驱动部用于驱动所述第一透镜在垂直于所述定焦镜头的光轴方向上移动，所述第二驱动部连接所述第二透镜，所述第二驱动部用于驱动所述第二透镜在垂直于所述定焦镜头的光轴方向上移动。The motor includes a first driving part and a second driving part, the first driving part is connected with the first lens, and the first driving part is used for driving the first lens in a direction perpendicular to the fixed-focus lens. moving in the direction of the optical axis, the second driving part is connected to the second lens, and the second driving part is used for driving the second lens to move in the direction perpendicular to the optical axis of the fixed-focus lens.
根据权利要求1所述的光学镜头，其特征在于，所述第一透镜在第一位置，所述第二透镜在第二位置时，所述对焦透镜处于无光焦度状态；The optical lens according to claim 1, wherein when the first lens is in a first position and the second lens is in a second position, the focusing lens is in a no-power state;

所述第一透镜自所述第一位置沿第一方向移动，所述第二透镜自所述第二位置沿第二方向移动，所述对焦镜头处于正光焦度状态；The first lens moves from the first position along a first direction, the second lens moves from the second position along a second direction, and the focusing lens is in a positive power state;

所述第一透镜自所述第一位置沿所述第二方向移动，所述第二透镜自所述第二位置沿所述第一方向移动，所述对焦镜头处于负光焦度状态，所述第一方向与所述第二方向相反。The first lens moves along the second direction from the first position, the second lens moves along the first direction from the second position, and the focusing lens is in a negative power state, so The first direction is opposite to the second direction.
根据权利要求2所述的光学镜头，其特征在于，所述第一透镜自所述第一位置沿所述第一方向移动的行程在1毫米至4毫米的范围内。The optical lens according to claim 2, wherein the travel of the first lens moving from the first position along the first direction is in the range of 1 mm to 4 mm.
根据权利要求1至3中任一项所述的光学镜头，其特征在于，所述第一透镜的物侧面和像侧面均为自由曲面，所述第二透镜的物侧面和像侧面均为自由曲面。The optical lens according to any one of claims 1 to 3, wherein the object side and the image side of the first lens are both free curved surfaces, and the object side and the image side of the second lens are both free surface.
根据权利要求4所述的光学镜头，其特征在于，所述自由曲面满足：The optical lens according to claim 4, wherein the free-form surface satisfies:

其中，z为所述自由曲面的矢高；r为在所述对焦镜头的光轴方向上的半径高度；c为曲率半径；k为圆锥系数；N为级数中多项式系数的总数；E _i(x,y)是x，y方向的幂级数；A _i是多项式系数；n为正整数；a与b为偶数。 Wherein, z is the sag height of the free-form surface; r is the radius height in the optical axis direction of the focusing lens; c is the radius of curvature; k is the conic coefficient; N is the total number of polynomial coefficients in the series; E _i ( x, y) is the power series in the x, y direction; A _i is the polynomial coefficient; n is a positive integer; a and b are even numbers.
根据权利要求1至5中任一项所述的光学镜头，其特征在于，在所述定焦镜头的光轴方向上，所述第一透镜与所述第二透镜之间的距离在0.1毫米至2毫米的范围内。The optical lens according to any one of claims 1 to 5, wherein in the optical axis direction of the fixed-focus lens, the distance between the first lens and the second lens is 0.1 mm to the range of 2 mm.
根据权利要求1至6中任一项所述的光学镜头，其特征在于，在所述定焦镜头的光轴方向上，所述第二透镜与所述定焦镜头之间的距离在0.1毫米至5毫米的范围内。The optical lens according to any one of claims 1 to 6, wherein in the optical axis direction of the fixed-focus lens, the distance between the second lens and the fixed-focus lens is 0.1 mm to the range of 5 mm.
根据权利要求1至7中任一项所述的光学镜头，其特征在于，所述第一透镜的阿贝数v _f1满足：20<v _f1<60。 The optical lens according to any one of claims 1 to 7, wherein the Abbe number v _f1 of the first lens satisfies: 20<v _f1 <60.
根据权利要求1至8中任一项所述的光学镜头，其特征在于，所述光学镜头的成像距离的范围为10毫米至无穷远。The optical lens according to any one of claims 1 to 8, wherein the imaging distance of the optical lens ranges from 10 mm to infinity.
根据权利要求1至9中任一项所述的光学镜头，其特征在于，所述光学镜头具有成像面，所述定焦镜头靠近所述对焦镜头的端部与所述成像面之间的距离为D，所述定焦镜头在无穷远对焦时的光学总长为TTL，D与TTL满足：TTL-10毫米≤D≤TTL+10毫米。The optical lens according to any one of claims 1 to 9, wherein the optical lens has an imaging surface, and the fixed focus lens is close to the distance between the end of the focusing lens and the imaging surface is D, the total optical length of the fixed-focus lens when focusing at infinity is TTL, and D and TTL satisfy: TTL-10 mm≤D≤TTL+10 mm.
根据权利要求1至10中任一项所述的光学镜头，其特征在于，所述光学镜头还包括外壳、棱镜马达及反射件，所述对焦镜头与所述定焦镜头均设置于所述外壳；The optical lens according to any one of claims 1 to 10, wherein the optical lens further comprises a casing, a prism motor and a reflector, and both the focusing lens and the fixed-focus lens are arranged in the casing ;

所述棱镜马达设置于所述外壳，且位于所述对焦镜头的物侧，所述反射件连接于所述棱镜马达，且相对所述棱镜马达转动，所述反射件用于反射环境光线，以使环境光线传播至所述对焦镜头。The prism motor is arranged on the housing and is located on the object side of the focusing lens, the reflector is connected to the prism motor and rotates relative to the prism motor, and the reflector is used for reflecting ambient light to Allows ambient light to propagate to the focusing lens.
根据权利要求11所述的光学镜头，其特征在于，所述外壳包括上盖以及底座，所述上盖安装于所述底座，所述上盖与所述底座围出所述外壳的内部，所述棱镜马达、所述对焦镜头与所述定焦镜头均位于所述外壳的内部，且均设置于所述底座；The optical lens according to claim 11, wherein the housing comprises an upper cover and a base, the upper cover is mounted on the base, the upper cover and the base enclose the interior of the housing, and the The prism motor, the focusing lens and the fixed-focus lens are all located inside the casing and are all arranged on the base;

所述上盖设有第一透光孔，所述第一透光孔将所述外壳的外部连通至所述外壳的内部，所述环境光线经所述第一透光孔传播至所述反射件；The upper cover is provided with a first light-transmitting hole, the first light-transmitting hole communicates the outside of the casing to the inside of the casing, and the ambient light propagates to the reflection through the first light-transmitting hole piece;

所述底座开设有第二透光孔，所述第二透光孔将所述外壳的内部连通至所述外壳的外部，所述第二透光孔正对于所述定焦镜头的出光侧。The base is provided with a second light-transmitting hole, the second light-transmitting hole connects the inside of the casing to the outside of the casing, and the second light-transmitting hole is facing the light-emitting side of the fixed-focus lens.
根据权利要求12所述的光学镜头，其特征在于，所述外壳还包括固定台，所述固定台位于所述外壳的内部，且固定于所述底座，所述固定台设置有限位槽，所述定焦镜头固定于所述限位槽内。The optical lens according to claim 12, wherein the housing further comprises a fixing table, the fixing table is located inside the housing and is fixed to the base, the fixing table is provided with a limiting groove, and the fixing table is The fixed-focus lens is fixed in the limiting groove.
一种摄像模组，其特征在于，包括模组电路板、感光芯片、滤光片以及如权利要求1至13中任一项所述光学镜头；A camera module, comprising a module circuit board, a photosensitive chip, a filter, and the optical lens according to any one of claims 1 to 13;

所述模组电路板位于所述定焦镜头的像侧；The module circuit board is located on the image side of the fixed-focus lens;

所述感光芯片固定于所述模组电路板朝向所述定焦镜头的一侧，所述感光芯片用于采集穿过所述定焦镜头的环境光线；The photosensitive chip is fixed on the side of the module circuit board facing the fixed-focus lens, and the photosensitive chip is used to collect ambient light passing through the fixed-focus lens;

所述滤光片位于所述定焦镜头与所述感光芯片之间。The filter is located between the fixed-focus lens and the photosensitive chip.
一种电子设备，其特征在于，包括壳体以及如权利要求14所述的摄像模组，所述摄像模组安装于所述壳体。An electronic device is characterized by comprising a casing and a camera module as claimed in claim 14, wherein the camera module is mounted on the casing.