Vehicle-mounted zoom camera

Abstract

The utility model discloses a vehicle-mounted zoom camera, which comprises a camera main body and a zoom lens, and the zoom lens comprises a vibrating membrane, a piezoelectric actuator and a light-transmitting substrate. The vibrating membranes are made of a polydimethylsiloxane material, two opposite large surfaces of the light-transmitting substrate are both connected with the edge of one vibrating membrane in a sealing manner, the vibrating membranes and the light-transmitting substrate form a cavity, the cavity is filled with light-transmitting liquid, and the light-transmitting liquid is filled in the cavity. The piezoelectric actuator is attached to the side, away from the light-transmitting substrate, of the vibrating membrane, and a through hole is formed in the attaching position of the piezoelectric actuator and the vibrating membrane. The zoom function is integrated to a single camera, and the focal length is adjusted by using the vibrating diaphragm and the piezoelectric actuator, so that the number of cameras is reduced, the AI and logic computing power requirements are reduced, and the system performance is optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted zoom cameras, in particular to a vehicle-mounted zoom camera. Background Art

[0002] With the continuous development of automobile intelligence and autonomous driving technology, vehicle cameras play an increasingly important role in vehicle perception systems. Vehicle cameras not only need to provide high-definition image quality, but also need to be able to flexibly adjust the focal length to meet the shooting needs of different distances and viewing angles. Traditional vehicle cameras often adopt a fixed focal length design. Although this design is simple and low-cost, it cannot meet the requirements of camera versatility in complex and changing driving environments.

[0003] In order to overcome the limitations of fixed focal length cameras, some zoom camera products have appeared on the market. These zoom cameras use built-in mechanical structures or optical components to adjust the focal length, thereby improving the applicability and flexibility of the camera to a certain extent. However, these traditional zoom camera designs often have problems such as complex structure, large size, slow adjustment speed and high cost.

[0004] More importantly, although these zoom cameras can adjust the focal length, they often fail to achieve ideal adjustment accuracy, response speed, and stability. For example, some mechanical zoom cameras may freeze or jump during adjustment, resulting in image quality degradation or loss of focus. In addition, the durability and reliability of traditional zoom cameras are often questioned, especially in harsh driving environments such as bumps and vibrations. Utility Model Content

[0005] In order to overcome at least one of the defects of the prior art described above, the utility model provides a vehicle-mounted zoom camera, which can solve the problems caused by the zoom camera mainly consisting of a mechanical structure and relatively complex optical elements.

[0006] A large number of cameras need to be installed, and the installation of a large number of cameras will increase the demand for AI algorithms and logical computing power.

[0007] The technical solution adopted by the utility model to solve the problem is:

[0008] A vehicle-mounted zoom camera comprises a camera body and a zoom lens, wherein the zoom lens comprises:

[0009] A vibration membrane, wherein the vibration membrane is made of polydimethylsiloxane material;

[0010] Piezoelectric actuator;

[0011] Light-transmitting substrate;

[0012] Among them, the two opposite large surfaces of the transparent substrate are sealed and connected to the edge of one of the vibration membranes, the vibration membrane and the transparent substrate form a chamber, the chamber is filled with transparent liquid, the piezoelectric actuator is attached to the side of the vibration membrane away from the transparent substrate, and the piezoelectric actuator is provided with a through hole at the place where it is attached to the vibration membrane.

[0013] By adopting the above solution, a combination of a vibration membrane, a piezoelectric actuator and a transparent substrate is used. Compared with traditional mechanical or optical zoom cameras, the zoom structure is greatly simplified, the number of parts is reduced, and the production time and cost are reduced. The vibration membrane is made of polydimethylsiloxane (PDMS) material, which not only has good light transmittance and elasticity, but also has a relatively low cost, further reducing the overall cost. And the zoom method based on liquid lenses has a faster response speed than traditional mechanical zoom, because the deformation of the liquid lens is completed instantly, without waiting for the movement of the mechanical structure. In addition, due to the lack of a complex mechanical structure, the zoom camera has better stability and durability in environments such as vibration and bumps.

[0014] In addition, it enables switching between different focal lengths within a single camera module. This design combines a vibrating membrane with a piezoelectric actuator. When the piezoelectric actuator is deformed, it drives the vibrating membrane to deform, thereby changing the distribution of the light-transmitting liquid in the chamber to adjust the focal length. This zoom function allows the camera to flexibly adjust the focal length as needed to cover fields of view at different distances, significantly reducing the number of cameras required. In addition, due to the use of a zoom camera design, the vehicle system can utilize camera resources more efficiently. Since one zoom camera can replace multiple fixed-focal-length cameras, the system does not need to process redundant data from multiple cameras, thereby reducing the demand for AI computing power and logic computing power. This not only reduces the burden on the controller, but also improves the response speed and accuracy of the system.

[0015] Furthermore, the through hole is arranged in the middle of the piezoelectric actuator, and the axis of the through hole, the center point of the vibration membrane and the center point of the piezoelectric actuator coincide with each other.

[0016] By adopting the above solution, the piezoelectric sensor and the vibration membrane can be installed concentrically. In addition, the provision of the through hole can ensure the lighting of the camera for better subsequent imaging.

[0017] Furthermore, when the piezoelectric actuator is not powered on, the vibration membrane is exposed in the portion of the through hole, and the surface on the side away from the transparent substrate forms a first surface, and the surface on the side of the piezoelectric actuator away from the transparent substrate forms a second surface, and the first surface and the second surface are both planes, and the first surface is flush with the second surface.

[0018] By adopting the above solution, the surface of the zoom lens is flat when the zoom lens is not zoomed, which is convenient for packaging and transportation.

[0019] Furthermore, when the piezoelectric actuator is energized, the vibration membrane is exposed in the portion of the through hole, and the surface on the side away from the transparent substrate forms a first surface, and the surface on the side of the piezoelectric actuator away from the transparent substrate forms a second surface, the first surface and the second surface are curved surfaces, and the middle portion of the first surface protrudes toward the side away from the transparent substrate.

[0020] By adopting the above solution, when the piezoelectric actuator is energized, it acts on the vibration membrane, so that the vibration membrane protrudes from the through hole to form a convex lens, thereby achieving the effect of adjusting the focal length.

[0021] Furthermore, when the piezoelectric actuator is powered on, the pressure application points of the piezoelectric actuator are arranged along the circumference of the through hole, and the direction in which the pressure is applied by the pressure application points is toward the light-transmitting substrate.

[0022] By adopting the above solution, the pressure application point of the piezoelectric actuator is set in the circumferential direction of the through hole, so that the effect of the piezoelectric actuator on the vibration membrane is more direct, so that the vibration membrane can have a larger variable focal range at the same action distance of the piezoelectric actuator.

[0023] Furthermore, the orthographic projection areas of the vibration membrane and the piezoelectric actuator on the light-transmitting substrate are both smaller than the surface area of ​​the large surface of the light-transmitting substrate.

[0024] By adopting the above solution, part of the light-transmitting substrate is not covered by the vibration membrane and the piezoelectric actuator, which can facilitate the installation of the zoom lens. It also helps to improve the light transmittance of the camera, thereby improving the brightness and clarity of the image. At the same time, it also controls the size of the vibration membrane and the piezoelectric actuator accordingly, which helps to reduce the weight and volume of the entire camera module. In the field of vehicle-mounted cameras, it can be more easily integrated into the vehicle system and reduce the impact on the vehicle body structure and performance.

[0025] Furthermore, the light-transmitting substrate is provided with a structural plate, the piezoelectric actuator is attached to the structural plate, a avoidance hole is provided in the center of the structural plate for avoiding the through hole of the piezoelectric actuator, the vibration membrane is provided at the avoidance hole and is sealed and connected to the avoidance hole.

[0026] By adopting the above solution, the structural plate can enhance the stability of the connection between the vibration membrane and the transparent substrate, and prevent the connection from failing due to vibration or external impact. At the same time, the structural plate can also serve as a seal. Compared with the direct sealing connection between the vibration membrane and the transparent substrate, the structural plate has better sealing performance and higher structural strength, preventing liquid leakage from affecting the zoom function.

[0027] Furthermore, the structural plate is made of silicone.

[0028] By adopting the above solution, the silicone material has good temperature resistance, weather resistance and chemical stability, which can ensure that the structural plate can maintain stable performance in various environments. In addition, the silicone material also has a certain elasticity and softness, which can adapt to the deformation of the vibration membrane while ensuring the sealing of the connection.

[0029] Furthermore, the light-transmitting liquid is oil.

[0030] By adopting the above solution, oil is used as the light-transmitting liquid, which has a higher refractive index and better light-transmitting performance than other liquids such as water, and can improve the imaging quality of the camera. At the same time, oil has good fluidity and stability, which can ensure that the liquid can be evenly distributed when the vibration membrane is deformed, achieving a smooth zoom effect.

[0031] Furthermore, the light-transmitting substrate is a glass substrate.

[0032] By adopting the above solution, the glass substrate has the advantages of high light transmittance, high definition, high temperature resistance, corrosion resistance, etc., and can provide high-quality imaging quality.

[0033] Furthermore, the vibration membranes and piezoelectric actuators on both sides of the light-transmitting substrate are symmetrically arranged on two large surfaces of the light-transmitting substrate with the light-transmitting substrate as a symmetry axis.

[0034] By adopting the above solution, the symmetrical design of the vibration membrane and the piezoelectric actuator can ensure that the zoom mechanisms on both sides have the same performance when working, thereby achieving a more uniform and smooth zoom effect. At the same time, the symmetrical design can also improve the structural stability of the camera module and reduce performance loss caused by vibration or external impact.

[0035] In summary, the vehicle-mounted zoom camera provided by the utility model has the following technical effects:

[0036] 1. The combination of a vibration membrane, a piezoelectric actuator and a light-transmitting substrate is used. Compared with traditional mechanical or optical zoom cameras, the zoom structure is greatly simplified, the number of parts is reduced, and thus the production time and cost are reduced. The vibration membrane is made of polydimethylsiloxane (PDMS) material, which not only has good light transmittance and elasticity, but also has a relatively low cost, further reducing the overall cost. In addition, the zoom method based on liquid lenses has a faster response speed than traditional mechanical zoom, because the deformation of the liquid lens is completed instantly, without waiting for the movement of the mechanical structure. In addition, due to the lack of a complex mechanical structure, the zoom camera has better stability and durability in environments such as vibration and bumps.

[0037] 2. The core component of the zoom lens is a combination of a vibration membrane and a piezoelectric actuator. The vibration membrane is made of polydimethylsiloxane material, which has good elasticity and durability. The piezoelectric actuator is attached to one side of the vibration membrane. By controlling the voltage or current of the piezoelectric actuator, it can produce a slight deformation, which in turn drives the vibration membrane to deform. The deformation will change the distribution of the light-transmitting liquid in the chamber, thereby achieving focal length adjustment.

[0038] 3. Traditional intelligent driving assistance systems require multiple cameras with different focal lengths to cover fields of view at different distances. In this technical solution, by adopting a zoom lens design, one camera can achieve switching of different focal lengths, thereby reducing the number of cameras. This not only reduces the assembly and cost burden, but also simplifies the system design and layout.

[0039] 4. Due to the use of a zoom camera, the vehicle system can adjust the focal length more flexibly to obtain clearer and more accurate image information. Correspondingly, in the same driving environment, the system can use fewer cameras to obtain the same or better perception effect. Therefore, compared with the solution of using multiple fixed-focus cameras, this technical solution can reduce the demand for AI computing power and logical computing power and reduce the burden on the controller.

[0040] 5. In addition, since the number of cameras is reduced, the technical solution can also simplify the layout of the vehicle body. In vehicle design, the installation position and angle of the camera usually need to be carefully considered and arranged to ensure that it can cover various areas around the vehicle. After using a zoom camera, since one camera can cover the field of view of multiple areas, the camera can be arranged more flexibly, reducing the complexity and difficulty of the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the three-dimensional cross-sectional structure of the zoom lens of the utility model;

[0042] Figure 2 It is a schematic diagram of the cross-sectional structure of the zoom lens of the utility model in a normal state;

[0043] Figure 3 It is a schematic diagram of the cross-sectional structure of the zoom lens of the utility model in the zoom state.

[0044] The meanings of the reference numerals are as follows: 100, variable focus lens; 1, vibration membrane; 11, first surface; 2, piezoelectric actuator; 21, second surface; 3, light-transmitting substrate; 4, chamber; 5, light-transmitting liquid; 6, structural plate. DETAILED DESCRIPTION

[0045] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described and discussed below in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] In order to facilitate the understanding of the embodiments of the present utility model, the following will be further explained by taking specific embodiments as examples in conjunction with the drawings, and each embodiment does not constitute a limitation on the embodiments of the present utility model.

[0047] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0049] See also Figure 1-Figure 3 The utility model discloses a vehicle-mounted zoom camera: it includes a camera body and a zoom lens 100, the zoom lens 100 includes a vibration membrane 1, a piezoelectric actuator 2 and a light-transmitting substrate 3, the vibration membrane 1 is made of polydimethylsiloxane material, two large surfaces opposite to each other of the light-transmitting substrate 3 are sealed and connected to the edge of one vibration membrane 1, the vibration membrane 1 and the light-transmitting substrate 3 form a chamber 4, the chamber 4 is filled with a light-transmitting liquid 5, the piezoelectric actuator 2 is attached to the side of the vibration membrane 1 away from the light-transmitting substrate 3, and the piezoelectric actuator 2 is provided with a through hole at the place where the vibration membrane 1 is attached.

[0050] Specifically, the through hole provided in the piezoelectric actuator 2 is used for the vibration membrane 1 to collect light and take pictures, and the light-transmitting liquid 5 in the chamber 4 can be made of water, oil, electrolyte solution or other liquids with stable chemical properties and light-transmitting imaging. The light-transmitting substrate 3 can be made of glass or other polymer materials that can achieve normal imaging requirements.

[0051] The working principle of the above structure is: when zooming is required, the piezoelectric actuator 2 is energized to apply pressure to the vibration membrane 1, so that the vibration membrane 1 located at the through hole bulges in the direction away from the light-transmitting substrate 3 to form a convex lens, thereby achieving the effect of zooming. In addition, the movement distance of the piezoelectric actuator 2 toward the vibration membrane 1 can be adjusted according to the zoom requirements, so as to freely adjust the focal length effect. Thus, the zoom lens 100 can achieve switching of different focal lengths in a single camera module. This design combines the vibration membrane 1 with the piezoelectric actuator 2. When the piezoelectric actuator 2 is deformed, it will drive the vibration membrane 1 to deform, thereby changing the distribution of the light-transmitting liquid 5 in the chamber 4 to achieve focal length adjustment. This zoom function allows the camera to flexibly adjust the focal length according to demand and cover the field of view of different distances, thereby significantly reducing the number of cameras required. In addition, due to the use of a zoom camera design, the vehicle system can use camera resources more efficiently. Since a zoom camera can replace multiple cameras with fixed focal lengths, the system does not need to process redundant data from multiple cameras, thereby reducing the demand for AI computing power and logical computing power. This not only reduces the burden on the controller, but also improves the response speed and accuracy of the system.

[0052] In this embodiment, in order to facilitate the concentric installation of the piezoelectric sensor and the vibration membrane 1, a through hole is provided in the middle of the piezoelectric actuator 2, and the axis of the through hole, the center point of the vibration membrane 1 and the center point of the piezoelectric actuator 2 coincide with each other. In addition, the provision of the through hole can ensure the lighting of the camera for better subsequent imaging.

[0053] When the piezoelectric actuator 2 is not powered, the vibration membrane 1 is exposed in the portion of the through hole, and the side surface away from the light-transmitting substrate 3 forms a first surface 11, and the side surface of the piezoelectric actuator 2 away from the light-transmitting substrate 3 forms a second surface 21. The first surface 11 and the second surface 21 are both planes, and the first surface 11 is flush with the second surface 21. The first surface 11 and the second surface 21 are flush, so that the surface of the zoom lens 100 is flush when the zoom lens 100 is not zoomed, which is convenient for packaging and transportation.

[0054] When the piezoelectric actuator 2 is energized, the vibration membrane 1 is exposed in the portion of the through hole, and the surface on the side away from the transparent substrate 3 forms a first surface 11, and the surface on the side of the piezoelectric actuator 2 away from the transparent substrate 3 forms a second surface 21. The first surface 11 and the second surface 21 are curved surfaces, and the middle part of the first surface 11 protrudes toward the side away from the transparent substrate 3. Through the above structure, when the piezoelectric actuator 2 is energized, it acts on the vibration membrane 1, so that the vibration membrane 1 protrudes out of the through hole to form a convex lens, thereby achieving the effect of adjusting the focal length.

[0055] Furthermore, when the piezoelectric actuator 2 is energized, the pressure application point of the piezoelectric actuator 2 is arranged along the circumference of the through hole, and the direction in which the pressure is applied by the pressure application point is toward the transparent substrate 3. The pressure application point of the piezoelectric actuator 2 is arranged in the circumference of the through hole, so that the effect of the piezoelectric actuator 2 on the vibration membrane 1 is more direct, so that at the same action distance of the piezoelectric actuator 2, the variable focal length range of the vibration membrane 1 is larger.

[0056] In some embodiments, the orthographic projection areas of the vibration membrane 1 and the piezoelectric actuator 2 on the transparent substrate 3 are smaller than the surface area of ​​the large surface of the transparent substrate 3, that is, part of the transparent substrate 3 is not covered by the vibration membrane 1 and the piezoelectric actuator 2, which can facilitate the installation of the zoom lens 100. It also helps to improve the light transmittance of the camera, thereby improving the brightness and clarity of the image. At the same time, the size of the vibration membrane 1 and the piezoelectric actuator 2 is also controlled accordingly, which helps to reduce the weight and volume of the entire camera module. In the field of vehicle-mounted cameras, it can be more conveniently integrated into the vehicle system and reduce the impact on the vehicle body structure and performance.

[0057] In this embodiment, a light-transmitting substrate 3 is provided with a structural plate 6, and a piezoelectric actuator 2 is attached to the structural plate 6. A avoidance hole is provided in the center of the structural plate 6 for avoiding the through hole of the piezoelectric actuator 2. The vibration membrane 1 is provided at the avoidance hole and is sealed and connected to the avoidance hole, that is, the vibration membrane 1, the structural plate 6 and the light-transmitting substrate 3 constitute a chamber 4. The structural plate 6 is made of elastic material. The piezoelectric actuator 2 acts on the structural plate 6. During the deformation of the structural plate 6, the light-transmitting liquid 5 in the chamber 4 is squeezed to move toward the vibration membrane 1, so that the vibration membrane 1 bulges and deforms, thereby achieving a zoom effect.

[0058] The avoidance hole provided in the structural plate 6 provides a movement space for the piezoelectric actuator 2, and the structural plate 6 can enhance the stability of the connection between the vibration membrane 1 and the light-transmitting substrate 3 to prevent the connection failure caused by vibration or external impact. At the same time, the structural plate 6 can also serve as a seal to supplement the sealing of the light-transmitting liquid 5 in the chamber 4 to prevent liquid leakage from affecting the zoom function.

[0059] A structural plate 6 is provided along the connection between the vibration membrane 1 and the transparent substrate 3. A avoidance hole for avoiding the through hole of the piezoelectric actuator 2 is provided in the center of the structural plate 6. The vibration membrane 1 is arranged at the avoidance hole and is sealed and connected to the avoidance hole.

[0060] By adopting the above solution, the structural plate 6 can enhance the stability of the connection between the vibration membrane 1 and the transparent substrate 3, and prevent the connection from failing due to vibration or external impact. At the same time, the structural plate 6 can also serve as a seal. Compared with the direct sealing connection between the vibration membrane 1 and the transparent substrate 3, its sealing performance is better and the structural strength is higher, which prevents liquid leakage from affecting the zoom function.

[0061] In this embodiment, the structural plate 6 is made of silicone, which has good temperature resistance, weather resistance and chemical stability, and can ensure that the structural plate 6 can maintain stable performance in various environments. In addition, the silicone material also has a certain elasticity and softness, which can adapt to the deformation of the vibration membrane 1 and ensure the sealing of the connection.

[0062] In this embodiment, the light-transmitting liquid 5 is oil. Compared with other liquids such as water, oil has a higher refractive index and better light transmission performance as the light-transmitting liquid 5, which can improve the imaging quality of the camera. At the same time, oil has good fluidity and stability, which can ensure that when the vibration membrane 1 is deformed, the liquid can be evenly distributed to achieve a smooth zoom effect.

[0063] In this embodiment, the light-transmitting substrate 3 is a glass substrate. Compared with other light-transmitting substrates 3, the glass substrate has the advantages of high light transmittance, high definition, high temperature resistance, corrosion resistance, etc., and can provide high-quality imaging quality.

[0064] In this embodiment, the vibration membrane 1 and the piezoelectric actuator 2 on both sides of the transparent substrate 3 are symmetrically arranged with the transparent substrate 3 as the symmetry axis and the two large surfaces of the transparent substrate 3. The symmetrical design of the vibration membrane 1 and the piezoelectric actuator 2 can ensure that the zoom mechanisms on both sides have the same performance when working, thereby achieving a more uniform and smooth zoom effect. At the same time, the symmetrical design can also improve the structural stability of the camera module and reduce performance loss caused by vibration or external impact.

[0065] The technical means disclosed in the solution of the utility model are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical solutions composed of any combination of the above technical features. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model, and these improvements and modifications are also regarded as the protection scope of the utility model.

Claims

1. A vehicle-mounted zoom camera, comprising a camera body and a zoom lens (100), characterized in that: The variable focus lens (100) comprises: A vibration membrane (1), wherein the vibration membrane (1) is made of a polydimethylsiloxane material; Piezoelectric actuator (2); A light-transmitting substrate (3); The two large opposite surfaces of the light-transmitting substrate (3) are sealedly connected to the edge of one of the vibration membranes (1); the vibration membrane (1) and the light-transmitting substrate (3) form a chamber (4); the chamber (4) is filled with a light-transmitting liquid (5); the piezoelectric actuator (2) is attached to the side of the vibration membrane (1) away from the light-transmitting substrate (3); and the piezoelectric actuator (2) is provided with a through hole at the position where it is attached to the vibration membrane (1).

2. The vehicle-mounted zoom camera according to claim 1, characterized in that: The through hole is arranged in the middle of the piezoelectric actuator (2), and the axis of the through hole, the center point of the vibration membrane (1) and the center point of the piezoelectric actuator (2) coincide with each other.

3. The vehicle-mounted zoom camera according to claim 1, characterized in that: When the piezoelectric actuator (2) is not powered, the vibration membrane (1) is exposed in the portion of the through hole, and the surface on the side away from the transparent substrate (3) forms a first surface (11), and the surface on the side of the piezoelectric actuator (2) away from the transparent substrate (3) forms a second surface (21), and the first surface (11) and the second surface (21) are both planes, and the first surface (11) and the second surface (21) are flush.

4. The vehicle-mounted zoom camera according to claim 1, characterized in that: When the piezoelectric actuator (2) is energized, the vibration membrane (1) is exposed in the portion of the through hole, and the surface on the side away from the light-transmitting substrate (3) forms a first surface (11), and the surface on the side of the piezoelectric actuator (2) away from the light-transmitting substrate (3) forms a second surface (21), the first surface (11) and the second surface (21) are curved surfaces, and the middle portion of the first surface (11) is convex toward the side away from the light-transmitting substrate (3).

5. The vehicle-mounted zoom camera according to claim 1, characterized in that: When the piezoelectric actuator (2) is powered on, the pressure application point of the piezoelectric actuator (2) is arranged along the circumference of the through hole, and the direction in which the pressure is applied by the pressure application point is toward the light-transmitting substrate (3).

6. The vehicle-mounted zoom camera according to claim 1, characterized in that: The orthographic projection areas of the vibration membrane (1) and the piezoelectric actuator (2) on the light-transmitting substrate (3) are both smaller than the surface area of ​​the large surface of the light-transmitting substrate (3).

7. The vehicle-mounted zoom camera according to claim 1, characterized in that: The light-transmitting substrate (3) is provided with a structural plate (6), the piezoelectric actuator (2) is attached to the structural plate (6), a avoidance hole for avoiding the through hole of the piezoelectric actuator (2) is provided in the center of the structural plate (6), and the vibration membrane (1) is provided at the avoidance hole and is sealed and connected to the avoidance hole.

8. The vehicle-mounted zoom camera according to claim 7, characterized in that: The structural plate (6) is made of silicone.

9. The vehicle-mounted zoom camera according to claim 1, characterized in that: The light-transmitting substrate (3) is a glass substrate.

10. The vehicle-mounted zoom camera according to any one of claims 1 to 9, characterized in that: The vibration membranes (1) and piezoelectric actuators (2) on both sides of the light-transmitting substrate (3) are symmetrically arranged on the two large surfaces of the light-transmitting substrate (3) with the light-transmitting substrate (3) as a symmetry axis.

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