WO2023185084A1 - Camera module and electronic device - Google Patents

Abstract

The present application relates to a camera module and an electronic device. The camera module (12) comprises a mounting base (121), a lens barrel (122) and a piezoelectric member (123). The lens barrel (122) is connected to the mounting base (121), and the piezoelectric member (123) is connected to the mounting base (121). The piezoelectric member (123) is used for generating, under the action of a single electrical signal, movement in a first direction and a second direction, so as to drive the lens barrel (122) to move relative to the mounting base (121) and realise optical image stabilisation of the camera module (12).

Description

Camera modules and electronic equipment

This application claims priority to the Chinese patent application with application number 2022103201083 and titled "Camera Module and Electronic Equipment" filed on March 29, 2022, the full text of which is hereby incorporated by reference.

Technical field

This application relates to the technical field of camera modules, and in particular to a camera module and electronic equipment.

Background technique

Camera modules of electronic devices such as mobile phones and tablets are generally equipped with voice coil motors. The voice coil motor is used to drive the movement of the lens group in the camera module to achieve the focus or anti-shake function of the camera module. Traditional voice coil motors are generally electromagnetic. The accuracy and stroke of their anti-shake performance are greatly limited by analog-to-digital conversion/digital-to-analog conversion (ADC/DAC), making it difficult to achieve high-precision and large-stroke anti-shake requirements at the same time.

Contents of the invention

According to various embodiments of the present application, a camera module and an electronic device are provided.

On the one hand, the present application provides a camera module, including a mounting base, a lens barrel and a piezoelectric component. The lens barrel and the piezoelectric component are respectively connected to the mounting base. The piezoelectric component is used in a single Movement in the first direction and the second direction is generated under the action of the electrical signal to drive the lens barrel to move relative to the mounting base and achieve optical anti-shake of the camera module.

On the other hand, the present application provides a camera module, including a mounting base, a lens barrel, a spring piece, and a piezoelectric component. The lens barrel is connected to the mounting base through the spring sheet, and the piezoelectric component is connected to the mounting base. The mounting base, the piezoelectric component is used to generate movement in the first direction and the second direction under the action of a single electrical signal, so that the lens barrel moves relative to the mounting base, wherein the first direction and the second direction are both consistent with the mounting base. The optical axis of the lens tube is vertical.

In another aspect, the present application provides an electronic device, including a housing and the above-mentioned camera module, and the camera module is provided in the housing.

Description of drawings

In order to explain the embodiments of the present application or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic diagram of an electronic device according to an embodiment;

Figure 2 is a schematic diagram of a camera module according to an embodiment;

Figure 3 is a schematic diagram of a camera module according to another embodiment;

Figure 4 is a schematic diagram of the relative positions of the piezoelectric components, rolling elements, position sensors, lens barrel and mounting base of the camera module according to an embodiment;

FIG. 5 is a schematic diagram of a module structure of an electronic device according to an embodiment.

Reference signs:

10. Electronic equipment 11. Housing 12. Camera module

12a, optical axis 121, mounting base 121a, limit slot

1211. Base 1213. Bracket 122. Lens tube

123. Piezoelectric part 1231. Piezoelectric body 1233. Friction head

124. Filter 125. Image sensor 126. Circuit board

127. Rolling element 128. Pretensioner 129. Position sensor

1291. Magnet 1293. Magnetic induction chip

Detailed ways

In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are shown in the accompanying drawings. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough understanding of the disclosure of the present application will be provided.

As used herein, "electronic equipment" refers to devices that are capable of receiving and/or sending communication signals, including but not limited to, connected via any one or more of the following connection methods:

(1) Via wired line connection, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connection;

(2) Via wireless interface methods, such as cellular networks, Wireless Local Area Network (WLAN), digital television networks such as DVB-H networks, satellite networks, and AM-FM broadcast transmitters.

An electronic device configured to communicate via a wireless interface may be referred to as a "mobile terminal". Examples of mobile terminals include, but are not limited to, the following electronic devices:

(1) Satellite phone or cellular phone;

(2) Personal Communications System (PCS) terminals that can combine cellular radiotelephone with data processing, fax and data communication capabilities;

(3) Wireless telephones, pagers, Internet/Intranet access, Web browsers, planners, calendars, Personal Digital Assistants (PDAs) equipped with Global Positioning System (GPS) receivers;

(4) Conventional laptop and/or handheld receivers;

(5) Conventional laptop and/or handheld radiotelephone transceivers, etc.

Referring to Figures 1 and 2, in some embodiments, the electronic device 10 is a smartphone. The electronic device 10 includes a housing 11 and a camera module 12 . The camera module 12 is connected to the housing 11 . The camera module 12 can be used to implement shooting functions, such as close-up and distant shots, and video calls. In some embodiments, the electronic device 10 includes a display screen (not shown), which can be used to display images and provide an interactive interface for a user. In some embodiments, the camera module 12 is used to achieve rear-facing shooting, that is, the light-incoming side of the camera module 12 is located on the back of the display surface of the display screen; in other embodiments, the camera module 12 can be used to achieve front-facing shooting. When shooting, the light entrance side of the camera module 12 is located on the same side as the display surface of the display screen. In other embodiments, the electronic device 10 may be, but is not limited to, a tablet computer, a notebook, a palmtop computer, and other devices.

Referring to Figure 2, in some embodiments, the camera module 12 includes a mounting base 121, a lens barrel 122 and a piezoelectric component 123. The mounting base 121 is used to carry the lens barrel 122 and the piezoelectric component 123. The lens barrel 122, the piezoelectric component 123 123 are respectively connected to the mounting base 121, and a lens or lens group for condensing light is installed in the lens barrel 122. The piezoelectric element 123 is used to generate movement in the first direction and the second direction under the action of a single electrical signal to drive the lens barrel 122 to move relative to the mounting base 121 and achieve optical anti-shake of the camera module 12 .

Specifically, in some embodiments, the mounting base 121 may include a base 1211 and a bracket 1213 connected to the base 1211. The lens barrel 122 and the piezoelectric component 123 are respectively connected to the bracket 1213. The camera module 12 may also include a filter 124, an image sensor 125, and a circuit board 126. The filter 124 is connected to the base 1211 and is used to filter infrared light to improve the shooting quality of the camera module 12 . The filter 124 is located between the lens barrel 122 and the image sensor 125 . The image sensor 125 is connected to the circuit board 126, and the circuit board 126 is connected to the base 1211. The circuit board 126 can be used to electrically connect to an external circuit, such as the motherboard of a mobile phone, to realize the communication connection between the camera module 12 and the motherboard.

Continuing to refer to FIG. 2 , the piezoelectric component 123 may include a piezoelectric body 1231 and a friction head 1233 connected to the piezoelectric body 1231 . The piezoelectric body 1231 is connected to the bracket 1213 of the mounting base 121 . The friction head 1233 abuts against the lens barrel 122 . The piezoelectric body 1231 is used to generate movement in the first direction and the second direction under the action of a single electrical signal to drive the friction head 1233 to move, and then drive the lens barrel 122 to move relative to the mounting base 121 through the friction head 1233 to realize the camera module 12 optical image stabilization. The friction head 1233 can be made of materials with a relatively large friction coefficient, such as silicone, rubber, etc., to increase the friction between the friction head 1233 and the lens barrel 122 and prevent slipping between the lens barrel 122 and the piezoelectric element 123 .

In related technologies, the camera module 12 generally uses an electromagnetic voice coil motor to achieve focusing and anti-shake functions, and the current and stroke of the voice coil motor have a corresponding relationship. Generally speaking, the greater the stroke of the lens barrel 122 or the lens, the greater the required driving current; the higher the current accuracy, the higher the minimum driving accuracy. For example, when the voice coil motor stroke is 1mm, the corresponding maximum current is 1000mA, and the minimum driving accuracy is 1um, a 10-bit driver IC (Integrated Circuit) is generally required for control; when the voice coil motor stroke is expanded to 2mm and 3mm, , when the minimum driving accuracy remains unchanged, the maximum current needs to be extended to 2000mA and 3000mA accordingly. At this time, 11bit and 12bit driver ICs are generally required for control. As the pixels of the camera module 12 on the electronic device 10 increase, the size of the image sensor 125 of the camera module 12 and the corresponding optical components increases accordingly, and the stroke and driving force required for focusing and anti-shake also increase accordingly. Therefore, When using a voice coil motor, the maximum drive current will increase, resulting in an increase in power consumption of the camera module 12, and a corresponding increase in ADC/DAC accuracy, which will greatly increase the cost and size of the drive IC.

In the embodiment of the present application, the piezoelectric body 1231 is a resonant piezoelectric body, which can drive the friction head 1233 to perform elliptical motion when driven by a certain sine wave voltage, thereby driving the lens barrel 122 to move relative to the mounting base 121 . Since the displacement of each elliptical movement of the piezoelectric body 1231 is extremely small, generally at the nanometer level, the sub-micron level displacement of the lens barrel 122 can be easily achieved by adjusting the number of cycles of the sine wave voltage control signal. Moreover, since the movement stroke of the piezoelectric body 1231 is positively correlated with the number of cycles of the sine wave voltage control signal, when it is necessary to achieve a long stroke movement of the lens barrel 122, the large stroke movement of the lens barrel 122 can be achieved without increasing the maximum control current. The power consumption of the camera module 12 and the electronic device 10 can be effectively reduced.

Referring to Figures 2 and 3, in some embodiments, the lens barrel 122 has an optical axis 12a, and the first direction and the second direction are orthogonal to the optical axis 12a. Using the optical axis 12a as the Z axis, the first direction as the X axis, and the second direction as the Y axis to establish a rectangular coordinate system, the piezoelectric body 1231 in the embodiment of the present application can generate the X axis direction and the Y axis under the action of a single electrical signal. The movement in the direction drives the friction head 1233 to move.

Piezoelectric modules in related technologies generally can only drive the lens barrel 122 to move in one direction (for example, the X direction), while optical anti-shake solutions generally need to control the displacement of the lens barrel 122 in two orthogonal directions, X and Y. Therefore, Generally, more than 2 piezoelectric modules need to be installed. The piezoelectric element 123 in the embodiment of the present application can move in two directions (X-axis, Y-axis) at the same time under the action of a single electrical signal, which can effectively simplify the driving structure of the optical anti-shake.

Moreover, in the related technology, one electrical signal is generally used to drive the piezoelectric module to deform in the X direction, and another electrical signal is used to drive the piezoelectric module to deform in the Y direction. Through the synchronous control of the two electrical signals, the piezoelectric module can be synthesized The elliptical motion drives the lens barrel 122 to move. This structural arrangement puts forward higher requirements for the synchronization of the two electrical signals. In the embodiment of the present application, a single electrical signal can be used to realize the deformation of the piezoelectric element 123 in the first direction and the second direction. For example, with reference to FIG. 4 , in some embodiments, the piezoelectric body 1231 is generally in the shape of a rectangular block, the friction head 1233 overlaps the piezoelectric body 1231 in the Z-axis direction, and on two sides of the piezoelectric body 1231 , for example When a single electrical signal is applied to one side parallel to XOZ and one side parallel to YOZ, the piezoelectric body 1231 can be driven to deform in the X and Y directions and synthesize an elliptical motion, and then drive the lens barrel 122 to move through the friction head 1233. Implement optical image stabilization of the camera module 12 . Of course, in some embodiments, two terminals of a single electrical signal can also be applied to the side parallel to XOZ and the side parallel to XOY respectively to drive the camera module 12 to move in the Z direction and the Y direction. This is not the case here. Again.

Referring to Figures 2 and 3, in some embodiments, the camera module 12 includes a rolling body 127. The bracket 1213 of the mounting base 121 has a limiting groove 121a. The rolling body 127 resists the lens barrel 122 and is rollably disposed on the limiting groove 121a. Bit slot 121a. The rolling element 127 can be a ball or a roller. When the lens barrel 122 is driven to move, the rolling element 127 can rotate relative to the lens barrel 122 to reduce the displacement resistance of the lens barrel 122 and improve the efficiency of optical anti-shake control. responding speed.

Referring to FIG. 4 , piezoelectric elements 123 and rolling elements 127 are provided in both the first direction and the second direction, and the piezoelectric elements 1231 and rolling elements 127 arranged in the first direction are respectively located on opposite sides of the lens barrel 122 , the piezoelectric body 1231 and the rolling body 127 arranged in the second direction are respectively located on opposite sides of the lens barrel 122 . The piezoelectric element 123 in the first direction and the piezoelectric element 123 in the second direction can work together. For example, the piezoelectric element 123 in the first direction and the piezoelectric element 123 in the second direction can work at the same time to adjust the lens barrel 122 in the third direction. The position of the first and second directions to improve control accuracy and response speed.

Referring to Figures 2 and 3, in some embodiments, the camera module 12 may also include a pretensioner 128, which is connected to the mounting base 121 and the lens barrel 122, so that the lens barrel 122 presses the friction head 1233 and Rolling elements 127. In some embodiments, the pretensioner 128 is a spring piece. After the elastic piece is assembled with the bracket 1213 of the mounting base 121 and the lens barrel 122, a preload force can be applied to the lens barrel 122 in the direction of the optical axis 12a (Z-axis), so that the lens barrel 122 presses against the friction head 1233 and the rolling element 127. This ensures the positional accuracy of the lens barrel 122 , for example, maintaining the vertical relationship between the optical axis 12 a and the image sensor 125 , and ensuring the normal operation of the piezoelectric element 123 .

Continuing to refer to Figure 3, the camera module 12 may also include a position sensor 129. The position sensor 129 includes a magnet 1291 and a magnetic induction chip 1293. One of the magnet 1291 and the magnetic induction chip 1293 is connected to the bracket 1213 of the mounting base 121, and the other is connected to on the lens barrel 122 for detecting the displacement of the lens barrel 122 relative to the mounting base 121 . In the embodiment of the present application, the position sensor 129 including the magnet 1291 and the magnetic induction chip 1293 is a type of Hall sensor, which can use changes in the magnetic field to determine the displacement between two objects, and can achieve higher control accuracy. Combined with the setting of the position sensor 129, the optical anti-shake of the camera module 12 can form a closed-loop control. That is, after the position sensor 129 feeds back the displacement of the lens barrel 122 relative to the bracket 1213, the control accuracy of the optical anti-shake can be further improved.

Referring to FIG. 4 , in some embodiments, the camera module 12 may include more than two position sensors 129 , and the two or more position sensors 129 are arranged around the lens barrel 122 . For example, in the embodiment shown in FIG. 4 , one position sensor 129 is disposed in the first direction and between the piezoelectric element 123 and the lens barrel 122 in the first direction, and the other position sensor 129 is disposed in the second direction. Located between the piezoelectric element 123 and the lens barrel 122 in the second direction, this arrangement can improve the position control accuracy of the lens barrel 122 in the first direction and the second direction. Furthermore, in the circumferential direction of the lens barrel 122, another position sensor 129 can be disposed between the rolling element 127 in the first direction and the rolling element 127 in the second direction to further improve the position control accuracy of the lens barrel 122.

FIG. 5 shows the module structure of the electronic device 10 . The electronic device 10 may include a radio frequency (RF, Radio Frequency) circuit 501, a memory 502 including one or more computer-readable storage media, an input unit 503, a display unit 504, a sensor 505, an audio circuit 506, a wireless fidelity ( WiFi (Wireless Fidelity) module 507 includes a processor 508 with one or more processing cores, a power supply 509 and other components. Those skilled in the art can understand that the structure of the electronic device 10 shown in FIG. 5 does not limit the electronic device 10 and may include more or less components than shown, or some components may be combined, or different components may be used. layout.

The radio frequency circuit 501 can be used to send and receive information, or to receive and send signals during a call. In particular, after receiving downlink information from the base station, it is handed over to one or more processors 508 for processing; in addition, uplink-related data is sent to the base station. . Typically, the radio frequency circuit 501 includes, but is not limited to, an antenna, at least one amplifier, a tuner, one or more oscillators, a Subscriber Identity Module (SIM) card, a transceiver, a coupler, a low noise amplifier (LNA, Low Noise Amplifier), duplexer, etc. In addition, the radio frequency circuit 501 can also communicate with networks and other devices through wireless communications. The wireless communication can use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM, Global System of Mobile communication), General Packet Radio Service (GPRS, General Packet Radio Service), Code Division Multiple Access (CDMA, Code Division Multiple Access), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), Long Term Evolution (LTE, Long Term Evolution), email, Short Messaging Service (SMS, Short Messaging Service), etc.

Memory 502 may be used to store applications and data. The application programs stored in the memory 502 include executable codes. Applications can be composed of various functional modules. The processor 508 executes various functional applications and data processing by running application programs stored in the memory 502 . The memory 502 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the storage data area may store data based on Data created by the use of the electronic device 10 (such as audio data, phone book, etc.), etc. In addition, memory 502 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 502 may also include a memory controller to provide the processor 508 and the input unit 503 with access to the memory 502 .

The input unit 503 can be used to receive inputted numbers, character information or user characteristic information (such as fingerprints), and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control. Specifically, in a specific embodiment, the input unit 503 may include a touch-sensitive surface as well as other input devices. A touch-sensitive surface, also known as a touch display or trackpad, can collect the user's touch operations on or near it (such as the user using a finger, stylus, or any suitable object or accessory on or near the touch-sensitive surface). operations near the surface), and drive the corresponding connection device according to the preset program. Optionally, the touch-sensitive surface may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact point coordinates, and then sends it to the touch controller. to the processor 508, and can receive commands sent by the processor 508 and execute them.

The display unit 504 may be used to display information input by the user or information provided to the user as well as various graphical user interfaces of the electronic device 10 , which may be composed of graphics, text, icons, videos, and any combination thereof. The display unit 504 may include a display panel. Optionally, the display panel can be configured in the form of liquid crystal display (LCD, Liquid Crystal Display), organic light-emitting diode (OLED, Organic Light-Emitting Diode), etc. Further, the touch-sensitive surface can cover the display panel. When the touch-sensitive surface detects a touch operation on or near it, it is sent to the processor 508 to determine the type of the touch event. The processor 508 then displays the display panel according to the type of the touch event. Corresponding visual output is provided on the panel. Although in Figure 5, the touch-sensitive surface and the display panel are used as two independent components to implement the input and input functions, in some embodiments, the touch-sensitive surface and the display panel can be integrated to implement the input and output functions. It can be understood that the display screen 110 may include an input unit 503 and a display unit 504.

Electronic device 10 may also include at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor. The ambient light sensor may adjust the brightness of the display panel according to the brightness of the ambient light. The proximity sensor may close the display panel and/or when the electronic device 10 moves to the ear. or backlight. As a kind of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in various directions (usually three axes). It can detect the magnitude and direction of gravity when stationary. It can be used to identify applications of mobile phone posture (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, knock), etc.; as for the electronic device 10, which can also be configured with other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc., here No longer.

The audio circuit 506 can provide an audio interface between the user and the electronic device 10 through speakers and microphones. The audio circuit 506 can convert the received audio data into an electrical signal, transmit it to the speaker, and the speaker converts it into a sound signal for output; on the other hand, the microphone converts the collected sound signal into an electrical signal, which is received by the audio circuit 506 and converted into The audio data, after being processed by the audio data output processor 508, is sent to, for example, another electronic device 10 via the radio frequency circuit 501, or the audio data is output to the memory 502 for further processing. Audio circuitry 506 may also include a headphone holder to provide communication of peripheral headphones with electronic device 10 .

Wireless fidelity (WiFi) is a short-distance wireless transmission technology. The electronic device 10 can help users send and receive emails, browse web pages, and access streaming media through the wireless fidelity module 507. It provides users with wireless broadband Internet access. Although FIG. 5 shows the wireless fidelity module 507, it can be understood that it is not a necessary component of the electronic device 10 and can be omitted as needed without changing the essence of the invention.

The processor 508 is the control center of the electronic device 10, using various interfaces and lines to connect various parts of the entire electronic device 10, by running or executing application programs stored in the memory 502, and calling data stored in the memory 502, to execute Various functions of the electronic device 10 and processing data, thereby overall monitoring the electronic device 10 . Optionally, the processor 508 may include one or more processing cores; preferably, the processor 508 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc. , the modem processor mainly handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 508.

Electronic device 10 also includes a power supply 509 that powers various components. Preferably, the power supply 509 can be logically connected to the processor 508 through a power management system, so that functions such as charging, discharging, and power consumption management can be implemented through the power management system. Power supply 509 may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

Although not shown in FIG. 5 , the electronic device 10 may also include a Bluetooth module, etc., which will not be described again here. During specific implementation, each of the above modules can be implemented as an independent entity, or can be combined in any way and implemented as the same or several entities. For the specific implementation of each of the above modules, please refer to the previous method embodiments, and will not be described again here.

The technical features of the above-described embodiments can be combined in any way. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, All should be considered to be within the scope of this manual.

The above-described embodiments only express several implementation modes of the present application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent application. It should be noted that, for those of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all fall within the protection scope of the present application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims (20)

A camera module is characterized by including: mounting base; a lens barrel connected to the mounting base; and A piezoelectric element is connected to the mounting base. The piezoelectric element is used to generate movement in the first direction and the second direction under the action of a single electrical signal, so as to drive the lens barrel to move relative to the mounting base and realize the desired movement. Describes the optical image stabilization of the camera module. The camera module according to claim 1, wherein the piezoelectric element includes a piezoelectric body and a friction head connected to the piezoelectric body, the piezoelectric body is connected to the mounting base, and the piezoelectric body is connected to the mounting base. The friction head is in contact with the lens barrel; the piezoelectric body is used to generate movement in the first direction and the second direction under the action of a single electrical signal to drive the friction head to move. The camera module according to claim 2, characterized in that the camera module includes a rolling body, the mounting base is provided with a limited slot, the rolling body resists the lens barrel and is rollable on the lens barrel. The limiting groove. The camera module according to claim 3, characterized in that the camera module includes a pretensioner, the pretensioner is connected to the mounting base and the lens barrel, so that the lens barrel is pressed against The friction head and the rolling element. The camera module according to claim 4, wherein the piezoelectric body is a resonant piezoelectric body, the pretensioner is a spring piece, and the rolling element is a ball. The camera module according to claim 3, wherein the lens barrel has an optical axis, and the first direction and the second direction are orthogonal to the optical axis. The camera module according to claim 6, wherein the piezoelectric elements and the rolling elements are provided in both the first direction and the second direction, and are arranged in the first direction. The piezoelectric bodies and the rolling bodies are respectively located on opposite sides of the lens barrel, and the piezoelectric bodies and the rolling bodies arranged in the second direction are respectively located on the sides of the lens barrel. Opposite sides. The camera module according to claim 1, wherein the camera module includes a position sensor, the position sensor includes a magnet and a magnetic induction chip, and one of the magnet and the magnetic induction chip is connected to the a mounting base, and the other is connected to the lens barrel for detecting the displacement of the lens barrel relative to the mounting base. The camera module according to claim 8, characterized in that the camera module includes more than two position sensors, and more than two position sensors are arranged around the lens barrel. The camera module according to any one of claims 1 to 9, wherein the mounting base includes a base and a bracket connected to the base, and the lens barrel and the piezoelectric element are respectively connected to the Bracket; the camera module includes a filter, an image sensor and a circuit board, the filter is connected to the base, the image sensor is connected to the circuit board, the circuit board is connected to the base, The optical filter is located between the lens barrel and the image sensor. A camera module, characterized in that it includes a mounting base, a lens barrel, a spring piece, and a piezoelectric component. The lens barrel is connected to the mounting base through the spring sheet, and the piezoelectric component is connected to the mounting base. , the piezoelectric element is used to generate movement in the first direction and the second direction under the action of a single electrical signal, so that the lens barrel moves relative to the mounting base, wherein the first direction and the second direction are both related to the lens barrel. The optical axis is perpendicular. The camera module according to claim 11, wherein the piezoelectric element has a friction head, and the pre-tightening force of the elastic piece acting on the lens barrel causes the lens barrel to offset the friction head. When the piezoelectric element is under the action of a single electrical signal, the friction head generates movement in the first direction and the second direction to frictionally drive the lens barrel to move relative to the mounting base. The camera module according to claim 12, wherein the piezoelectric element includes a piezoelectric body connected to the friction head, the piezoelectric body is connected to the mounting base, and the piezoelectric body The body is used to deform under the action of a single electrical signal to drive the friction head to move in the first direction and the second direction. The camera module according to claim 13, wherein the piezoelectric body drives the friction head to move along an elliptical trajectory under the action of a single electrical signal. The camera module according to claim 11, wherein the camera module includes a rolling element, the mounting base is provided with a limiting groove, the rolling element is rollably disposed in the limiting groove, and the The pre-tightening force of the elastic piece acting on the lens barrel causes the lens barrel to offset the rolling element. The camera module according to claim 15, wherein the rolling elements are balls. The camera module according to claim 15, characterized in that the piezoelectric body and the rolling body are respectively provided on opposite sides of the lens barrel in the first direction, and the lens barrel is provided with the piezoelectric body and the rolling body on opposite sides in the second direction. The piezoelectric body and the rolling body are respectively provided on opposite sides. The camera module according to claim 11, wherein the camera module includes a position sensor, the position sensor includes a magnet and a magnetic induction chip, and one of the magnet and the magnetic induction chip is connected to the a mounting base, and the other is connected to the lens barrel for detecting the displacement of the lens barrel relative to the mounting base. The camera module according to claim 18, characterized in that the camera module includes more than two position sensors, and more than two position sensors are arranged around the lens barrel. An electronic device, characterized by comprising a housing and the camera module according to any one of claims 1 to 19, the camera module being provided in the housing.

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