Camera module and electronic device

Abstract

The application discloses a camera module and electronic equipment, the camera module includes a shell, a lens, a vibration body and a piezoelectric element, one side of the shell forms an assembly opening, the lens is arranged in the assembly opening, and the vibration body is arranged in the shell; the vibration body includes a first vibration part and a second vibration part in the form of a ring, a bending included angle is formed between the first vibration part and the second vibration part, one end of the first vibration part away from the second vibration part is connected to the lens, and the piezoelectric element is connected to one end of the second vibration part away from the first vibration part and can drive the vibration body to vibrate. The piezoelectric element of the camera module provided by the application can realize ultrasonic vibration of the vibration body, the bending of the vibration body is arranged so that the vibration body has good longitudinal stiffness and transverse stiffness, structural damage caused by high-frequency vibration can be avoided, the self-cleaning efficiency of the camera module is improved, and the reliability of the camera module is ensured.

Description

Technical Field

[0001] This application belongs to the field of imaging technology, specifically, it relates to a camera module and an electronic device. Background Technology

[0002] With the rapid development of smart terminals, security monitoring and vehicle imaging, cameras, as the core component for image acquisition, directly affect the user experience of terminal products through their shooting quality.

[0003] In actual use, dust, oil, fingerprints, and other impurities inevitably accumulate on the surface of camera lenses. These deposits cause scattering and diffraction of incident light, resulting in problems such as glare, fogging, reduced contrast, and blurred details in the image. In severe cases, they can even affect the normal operation of autofocus and image recognition algorithms.

[0004] In related technologies, manual wiping or a built-in micro-wiping mechanism is typically used to remove dirt from the lens surface. However, manual wiping is inefficient and cannot achieve real-time cleaning; while mechanical wiping structures have drawbacks such as abrasion of the lens coating, increased size, and insufficient reliability. Summary of the Invention

[0005] One objective of this application is to provide a new technical solution for camera modules and electronic devices.

[0006] According to a first aspect of the embodiments of this application, a camera module is provided, the camera module comprising: A housing and a lens, wherein an assembly opening is formed on the housing and the lens is disposed in the assembly opening; A vibrating body and a piezoelectric element, wherein the vibrating body is disposed within the housing; The vibrating body includes a first vibrating part and a second vibrating part that are ring-shaped, with a bending angle between the first vibrating part and the second vibrating part. The end of the first vibrating part away from the second vibrating part is connected to the lens. The piezoelectric element is connected to the end of the second vibrating part away from the first vibrating part and can drive the vibrating body to vibrate.

[0007] Optionally, the bending angle is 70°-120°.

[0008] Optionally, the first vibrating part and the second vibrating part form a bending angle toward the center of the housing.

[0009] Optionally, the edge of the assembly opening has an annular limiting surface, and the lens has an annular assembly surface, which fits against the annular limiting surface.

[0010] Optionally, the first vibration part includes a first vibration segment and a first support block. The first vibration segment is connected between the second vibration part and the first support block. The top surface of the first support block is connected to the lens, and the outer surface of the first support block is threaded into the inner side of the housing.

[0011] Optionally, the second vibrating part includes a second vibrating segment and a second support block. The second vibrating segment is connected to the first vibrating segment and forms the bending angle. The second support block is connected to the end of the second vibrating segment away from the first vibrating segment and is configured to house the piezoelectric element.

[0012] Optionally, the camera module further includes a connector, at least a portion of which is sandwiched between the first vibrating part and the lens.

[0013] Optionally, the connector includes a connecting section and a fixing section, and there is an assembly space between the lens and the housing; The connecting section is sandwiched between the first vibrating part and the lens, and the fixing section is disposed in the assembly space and fixed to the housing.

[0014] Optionally, the camera module further includes a counterweight and a control element. The counterweight is connected inside the housing, and the control element is disposed inside the housing and electrically connected to the piezoelectric element.

[0015] According to a second aspect of the embodiments of this application, an electronic device is provided, the electronic device including the camera module described in the first aspect.

[0016] One technical advantage of this application is: This application discloses a camera module comprising a housing, a lens, a vibrator, and a piezoelectric element. An assembly opening is formed on one side of the housing, and the lens is disposed within the assembly opening. The vibrator is disposed within the housing. The vibrator includes a first vibrating part and a second vibrating part arranged in annular shape, with a bending angle formed between the first and second vibrating parts. The end of the first vibrating part away from the second vibrating part is connected to the lens. The piezoelectric element is connected to the end of the second vibrating part away from the first vibrating part and can drive the vibrator to vibrate. The piezoelectric element of this application embodiment enables ultrasonic vibration of the vibrator. The bending arrangement of the vibrator provides it with good longitudinal and lateral stiffness, avoiding structural damage caused by high-frequency vibration, improving the self-cleaning efficiency of the camera module, and ensuring the reliability of the camera module.

[0017] Other features and advantages of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present application and, together with their description, serve to explain the principles of the present application.

[0019] Figure 1 A cross-sectional view of a camera module provided in one embodiment of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 A schematic diagram of a vibrating body of a camera module provided in one embodiment of this application; Figure 4 A cross-sectional view of a vibrating body of a camera module provided in one embodiment of this application; Figure 5 A top view of a connector for a camera module provided in one embodiment of this application; Figure 6 A cross-sectional view of a connector for a camera module provided in one embodiment of this application; Figure 7 This is a vibration diagram of a camera module provided in one embodiment of this application.

[0020] in: 1. Housing; 11. Assembly opening; 111. Annular limiting surface; 2. Lens; 21. Annular assembly surface; 3. Vibrating body; 31. First vibrating part; 311. First vibrating segment; 312. First support block; 32. Second vibrating part; 321. Second vibrating segment; 322. Second support block; 4. Piezoelectric element; 5. Connector; 51. Connecting section; 52. Fixing section; 6. Counterweight; 7. Control element. Detailed Implementation

[0021] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0022] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0024] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0027] During actual use, dust, oil, fingerprints, and other impurities inevitably accumulate on the lens surface of the camera module. These deposits cause scattering and diffraction of incident light, resulting in problems such as glare, fogging, reduced contrast, and blurred details in the image. In severe cases, they can even affect the normal operation of autofocus and image recognition algorithms. Furthermore, existing cleaning methods are not only inefficient but also prone to damaging the lens, reducing the reliability of the camera module.

[0028] The piezoelectric element of the camera module provided in this application embodiment can realize ultrasonic vibration of the vibrator. The bending arrangement of the vibrator gives it good longitudinal stiffness, which enables the vibrator to efficiently transmit high-frequency ultrasonic vibration to the lens. The vibrator also has good lateral stiffness, which can avoid structural damage caused by high-frequency vibration, improve the self-cleaning efficiency of the camera module, and ensure the reliability of the camera module.

[0029] Reference Figure 1 and Figure 2 This application provides a camera module, which includes: The housing 1 and the lens 2 are provided. An assembly opening 11 is formed on one side of the housing 1, and the lens 2 is disposed in the assembly opening 11. Vibrating body 3 and piezoelectric element 4, the vibrating body 3 is disposed inside the housing 1; The vibrating body 3 includes a first vibrating part 31 and a second vibrating part 32 in an annular shape. A bending angle is formed between the first vibrating part 31 and the second vibrating part 32. The end of the first vibrating part 31 away from the second vibrating part 32 is connected to the lens 2. The piezoelectric element 4 is connected to the end of the second vibrating part 32 away from the first vibrating part 31 and can drive the vibrating body 3 to vibrate.

[0030] In the above embodiments, the housing 1 serves as the main supporting structure of the camera module, providing installation space and positioning reference for components such as the lens 2, vibrator 3, and piezoelectric element 4. At the same time, it encapsulates and protects the internal components of the housing 1 from the outside world, ensuring the overall structural integrity of the camera module.

[0031] See Figure 1 and Figure 2 The assembly opening 11 can be located on the light-incident side of the housing 1, providing an interface for the insertion and fixation of the lens 2, allowing the lens 2 to be installed from inside the housing 1 into the assembly opening 11 and achieving a seal on the housing 1. Simultaneously, the lens 2, as the core optical component of the camera module, can be used for light transmission and imaging.

[0032] During the use of the camera module, dust and other impurities are easily attached to the surface of the lens 2, which requires the vibration of the vibrator 3 to achieve self-cleaning in order to maintain the shooting quality.

[0033] See Figure 1 The vibrator 3 is disposed inside the housing 1, and the piezoelectric element 4 converts electrical signals into mechanical vibrations using the piezoelectric effect. In this embodiment, the piezoelectric element 4 is connected to the vibrator 3. The vibrator 3 generates ultrasonic vibrations under the drive of the piezoelectric element 4, and transmits the vibration energy to the lens 2 through its own structure. In other words, it can drive the lens 2 to vibrate, causing dust and other impurities attached to the surface of the lens 2 to detach under the action of high-frequency vibration, thereby achieving automatic cleaning without manual intervention.

[0034] See Figure 3 and Figure 4 The vibrator 3 is spindle-shaped, and the spindle-shaped structure is formed by two relatively bent vibrating parts. The bending angle can be towards the center of the shell 1 or towards the inner wall of the shell 1, which can ensure the wall thickness of the vibrator 3 and improve the compactness of the vibrator 3.

[0035] In one embodiment, see Figure 1 and Figure 3 The first vibration part 31 has a ring structure. The end of the first vibration part 31 away from the second vibration part 32 is connected to the lens 2 (it can be directly connected or indirectly connected). The vibration energy of the vibrating body 3 can be directly transmitted to the lens 2 through the first vibration part 31. Moreover, the ring structure of the first vibration part 31 is conducive to the uniform distribution of vibration energy along the circumference of the lens 2, avoiding excessive local force on the lens 2 and causing damage, thus ensuring the cleaning effect of the camera module.

[0036] Meanwhile, the second vibration part 32 has a ring structure, and the end of the second vibration part 32 away from the first vibration part 31 is connected to the piezoelectric element 4. That is, the second vibration part 32 can receive the driving force of the piezoelectric element 4 and transmit the vibration to the first vibration part 31. Moreover, the piezoelectric element 4 is a ring-shaped body, and the piezoelectric element 4 is in close contact with the bottom of the vibrating body 3, which ensures the efficiency of vibration transmission.

[0037] Additionally, see Figure 1 The bending angle α formed between the first vibrating part 31 and the second vibrating part 32, this bending arrangement ensures that the vibrating body 3 simultaneously possesses sufficient longitudinal direction (the axial direction of the vibrating body 3, such as...). Figure 1 The vertical stiffness of the vibrator 3 allows it to efficiently transmit high-frequency ultrasonic vibrations to the lens 2, while also possessing sufficient lateral stiffness (the radial stiffness of the vibrator 3, such as...). Figure 1 The transverse stiffness of the camera module is increased to resist structural deformation or damage caused by high-frequency vibration. This solves the problems of traditional cylindrical vibrators that are prone to overheating or S-shaped vibrators that are difficult to process and prone to stress concentration and fatigue cracks, thus improving the reliability of the camera module.

[0038] The camera module provided in this embodiment includes a housing 1, a lens 2, a vibrator 3, and a piezoelectric element 4. An assembly opening 11 is formed on one side of the housing 1, the lens 2 is disposed within the assembly opening 11, and the vibrator 3 is disposed within the housing 1. The vibrator 3 includes a first vibrating part 31 and a second vibrating part 32 in an annular shape, with a bending angle between the first vibrating part 31 and the second vibrating part 32. The end of the first vibrating part 31 away from the second vibrating part 32 is connected to the lens 2. The piezoelectric element 4 is connected to the end of the second vibrating part 32 away from the first vibrating part 31 and can drive the vibrator 3 to vibrate. In this embodiment, the piezoelectric element 4 enables ultrasonic vibration of the vibrator 3. The bending arrangement of the vibrator 3 provides both good longitudinal stiffness, allowing it to efficiently transmit high-frequency ultrasonic vibrations to the lens 2, and good lateral stiffness, preventing structural damage caused by high-frequency vibrations, improving the self-cleaning efficiency of the camera module, and ensuring its reliability.

[0039] Moreover, the camera module provided in this application has a simple and compact structure, which is conducive to mass production using processes such as stamping, thereby reducing production costs and making it suitable for large-scale production.

[0040] In some embodiments, see Figure 1 The bending angle α is 70°-120°, for example, the bending angle α is 75°, 80°, 90° or 105°.

[0041] In the above embodiments, the bending angle is limited to the range of 70°-120°, and the vibration frequency of the vibrator 3 can be in the range of 20KHz-40KHz. This allows the vibrator 3 to achieve a balance between longitudinal and lateral stiffness. On the one hand, the above angle range ensures that the vibrator 3 has good longitudinal stiffness, so that the ultrasonic vibration driven by the piezoelectric element 4 can be transmitted efficiently and with low loss through the second vibration part 32 to the first vibration part 31 and finally act on the lens 2, ensuring cleaning efficiency. On the other hand, the above angle range provides sufficient lateral stiffness, effectively suppressing radial deformation and stress concentration caused by high-frequency vibration, avoiding fatigue cracks in the vibrator 3, and improving the reliability of the camera module product.

[0042] Meanwhile, this angle range controls the overall axial dimensions of the vibrator 3, meeting the design requirements for miniaturization and lightweighting of the camera module, and helping to suppress stray high-frequency resonance and ensure the purity of the vibration modes. If the bending angle is too small, such as less than 60°, the structural stiffness of the vibrator 3 is weak, and transverse waves are prone to occur during vibration, affecting the vibration effect. If the angle is too large, such as greater than 130°, the vibration frequency of the vibrator 3 will be too high, and the amplitude and vibration velocity will also be limited. If the vibration frequency is too high, it will also cause heat generation problems.

[0043] In some embodiments, see Figure 1 A bending angle is formed between the first vibrating part 31 and the second vibrating part 32 toward the center of the housing 1.

[0044] In the above embodiment, when the bending angle is inward toward the center of the housing 1, on the one hand, the path of vibration energy from the piezoelectric element 4 through the second vibration part 32 to the first vibration part 31 and then to the lens 2 is more direct and compact, reducing unnecessary energy loss and improving the transmission efficiency of ultrasonic vibration to the surface of the lens 2; on the other hand, it avoids the space in the center of the housing 1, which makes it easier to set up structures such as photosensitive elements and lens barrels in the housing 1, and improves the structural compactness of the camera module.

[0045] In some embodiments, see Figure 1 and Figure 2 The edge of the assembly opening 11 has an annular limiting surface 111, and the lens 2 has an annular assembly surface 21, which fits against the annular limiting surface 111.

[0046] In the above embodiment, the annular limiting surface 111 is inclined relative to the axial direction of the camera module, so that the annular limiting surface 111 provides a clear stop surface for the lens 2 in the axial direction. When the lens 2 is installed into the housing 1, it can accurately reach the installation position, avoiding optical path deviation or sealing failure due to excessive insertion or incomplete positioning of the lens 2, thus ensuring the axial assembly accuracy of the lens 2. Moreover, after the annular limiting surface 111 is in contact with the annular assembly surface 21 of the lens 2, it can effectively constrain the axial degree of freedom of the lens 2, preventing the lens 2 from detaching from the assembly opening 11 in the axial direction, thus ensuring the structural stability of the camera module.

[0047] Meanwhile, the annular limiting surface 111 and the annular assembly surface 21 of the lens 2 form a surface contact seal, increasing the sealing area and effectively preventing external impurities such as dust and moisture from entering the interior of the housing 1 through the assembly gap between the lens 2 and the housing 1, thus improving the sealing effect of the camera module. Furthermore, the sealing effect can be further improved by applying waterproof adhesive between the annular assembly surface 21 and the annular limiting surface 111.

[0048] In some embodiments, see Figure 3 and Figure 4 The first vibration part 31 includes a first vibration segment 311 and a first support block 312. The first vibration segment 311 is connected between the second vibration part 32 and the first support block 312. The top surface of the first support block 312 is connected to the lens 2. The outer surface of the first support block 312 is threadedly engaged with the inner side of the housing 1.

[0049] In the above embodiment, the first vibration segment 311 serves as a vibration transmission component between the second vibration section 32 and the first support block 312. It can further transmit the ultrasonic vibration energy transmitted from the piezoelectric element 4 via the second vibration section 32 to the first support block 312, and then from the first support block 312 to the lens 2, ensuring efficient transmission of vibration energy. The top surface of the first support block 312 can be directly connected to the lens 2 or indirectly connected via other connectors, ensuring that the lens 2 receives effective ultrasonic vibration for efficient cleaning. Furthermore, the top surface of the first support block 312 provides a larger contact area, dispersing the assembly stress and vibration stress borne by the lens 2, reducing the risk of cracks or breakage due to localized stress concentration.

[0050] In addition, the outer side of the first support block 312 is threaded with the inner side of the housing 1, which strengthens the structural integrity and connection rigidity of the vibrator 3, the lens 2 and the housing 1. It can maintain the axial connection between the first support block 312 and the housing 1 even when the vibrator 3 is vibrating at high frequency, and avoid the lens 2 losing the support of the housing 1 due to vibration. During the vibration process, the vibrator 3 can carry the lens 2 and the housing 1 to vibrate synchronously and parallel longitudinally. The amplitude difference between the top of the housing 1 and the lens 2 can be less than 0.05%, which ensures the structural stability of the camera module in long-term use.

[0051] In some embodiments, see Figure 3 and Figure 4 The second vibration section 32 includes a second vibration segment 321 and a second support block 322. The second vibration segment 321 is connected to the first vibration segment 311 and forms a bending angle. The second support block 322 is connected to the end of the second vibration segment 321 away from the first vibration segment 311 and is configured to house the piezoelectric element 4.

[0052] In the above embodiments, the first support block 312 and the second support block 322 are both ring-shaped support blocks. The second support block 322 is dedicated to supporting the piezoelectric element 4, so that the installation and fixing of the piezoelectric element 4 does not interfere with the vibration transmission structure of the vibrating body 3, thus ensuring the purity of the vibration mode of the second vibration segment 321.

[0053] See Figure 4 The connection point between the second vibration segment 321 and the first vibration segment 311 is the location where the aforementioned bending angle is formed, which facilitates the balance between longitudinal and lateral stiffness of the vibrating body 3. The second vibration segment 321 transmits the ultrasonic vibration generated by the piezoelectric element 4 to the first vibration segment 311 through this bending node, so that the vibrating body 3 obtains sufficient lateral stiffness while transmitting ultrasonic energy, avoiding structural damage under high-frequency vibration.

[0054] In some embodiments, the wall thickness of the first vibration segment 311 and the second vibration segment 321 gradually changes to form a first vibration segment 311 and a second vibration segment 321 with varying thicknesses. See also Figure 4 The thickness at point a is greater than the thickness at point b, meaning the wall thickness of the first vibration segment 311 gradually increases from top to bottom. The thickness at point b is greater than the thickness at point c, meaning the wall thickness of the second vibration segment 321 gradually increases from top to bottom. The first vibration segment 311 and the second vibration segment 321 together form a vibration segment with a wall thickness that gradually increases from top to bottom; or the first vibration segment 311 and the second vibration segment 321 each form a vibration segment with a wall thickness that gradually increases from top to bottom. Both methods can ensure the vibration flexibility of the vibrating body 3.

[0055] In some embodiments, see Figure 1 and Figure 5 The camera module also includes a connector 5, at least a portion of which is sandwiched between the first vibrating part 31 and the lens 2.

[0056] In the above embodiment, the top surface of the first support block 312 is connected to the lens 2. Under high-frequency ultrasonic vibration, the local stress in the connection area between the top surface of the first support block 312 and the lens 2 is still relatively large. The connector 5 provided in this application embodiment can be a rigid connector. The connector 5 can strengthen the connection strength between the first vibration part 31 and the lens 2, thereby increasing the connection path and bearing area between the first vibration part 31 and the lens 2, and improving the overall bearing capacity and fatigue life of the connection area.

[0057] The present application embodiment, through the structural design of the connector 5, can flexibly adjust the local stiffness of the connection area between the first vibration part 31 and the lens 2 without changing the main structure of the vibrator 3 and the lens 2, so that the overall stiffness distribution of the vibrator 3 is more balanced, which is beneficial to suppressing local deformation under high frequency vibration.

[0058] In some embodiments, see Figure 5 and Figure 6 The connector 5 includes a connecting section 51 and a fixing section 52, and there is an assembly space between the lens 2 and the housing 1; The connecting section 51 is sandwiched between the first vibrating part 31 and the lens 2, and the fixing section 52 is disposed in the assembly space and fixed to the housing 1.

[0059] In the above embodiments, the connecting section 51 and the fixing section 52 can form an L-shaped connector 5, realizing an integrated design of vibration transmission and structural fixation. The connecting section 51 transmits vibration and provides clamping constraint between the first vibrating part 31 and the lens 2, while the fixing section 52 anchors the connector 5 within the housing 1, simplifying the assembly structure of the camera module and improving the overall integrity and reliability of the camera module.

[0060] See Figure 6 The L-shaped structure formed by the annular connecting section 51 and the annular fixing section 52 makes full use of the assembly space between the lens 2 and the housing 1. The connecting section 51 extends along the axial direction of the camera module and is sandwiched between the first vibrating part 31 and the lens 2, while the fixing section 52 extends along the radial direction of the camera module and is disposed in the assembly space between the lens 2 and the housing 1. This allows the connecting part 5 to achieve positioning functions in both directions within a limited axial and radial space, improving the structural compactness of the camera module and facilitating the miniaturization design of the camera module.

[0061] Specifically, see Figure 1 and Figure 6 The top surface of the connecting section 51 can be connected to the bottom of the lens 2 with fastening adhesive, and the bottom surface of the connecting section 51 is fastened to the top of the vibrator 3 with high modulus epoxy resin adhesive. The fixing section 52 is rigidly fixed to the bottom of the housing 1 with screws, which ensures that the vibrator 3 carries the lens 2 and vibrates synchronously and parallel longitudinally with the housing 1, reduces the risk of sealing cracking caused by the amplitude difference between the top of the housing 1 and the lens 2, avoids vibration loss caused by uneven filling of adhesive, and ensures the structural stability of the camera module in long-term use.

[0062] In the above embodiment, in the radial direction of the lens 2, there is a first gap between the housing 1 and the lens 2 (excluding the area between the annular assembly surface 21 and the annular limiting surface 111), and the size of the first gap is 0.05mm-0.1mm; there is a second gap between the fixing section 52 and the housing 1, and the size of the second gap is 0.05mm-0.1mm, so as to provide assembly tolerance for the housing 1, the lens 2 and the connector 5, and avoid mutual compression when the housing 1, the lens 2 and the connector 5 are thermally deformed.

[0063] In some embodiments, see Figure 1 The camera module also includes a counterweight 6 and a control element 7. The counterweight 6 is connected inside the housing 1, and the control element 7 is located inside the housing 1 and electrically connected to the piezoelectric element 4.

[0064] In the above embodiments, the counterweight 6 is connected inside the housing 1 and can balance the inertial force generated by the high-frequency vibration of the vibrator 3. Specifically, when the vibrator 3 generates high-frequency ultrasonic vibration under the drive of the piezoelectric element 4, it will generate a periodic reaction force on the housing 1, which will cause the housing 1 to vibrate slightly or even resonate, resulting in overall shaking of the camera module and abnormal noise, affecting the stability of the camera image. The counterweight 6 provided in this embodiment is connected inside the housing 1, and the mass of the counterweight 6 and the vibration inertia of the vibrator 3 form a dynamic balance, effectively offsetting the inertial force transmitted from the vibrator 3 to the housing 1, so that the housing 1 can remain stable during operation and avoid the impact of camera module shaking on the imaging quality.

[0065] Furthermore, after the counterweight 6 is connected inside the shell 1, it can change the mass distribution and natural frequency of the shell 1, making the natural frequency of the shell 1 far away from the working frequency of the vibrator 3. This effectively avoids the shell 1 being excited and resonating when the vibrator 3 is working, reduces structural noise and fatigue damage risk, and improves the acoustic performance and structural reliability of the camera module.

[0066] See Figure 1 After the control element 7 is electrically connected to the piezoelectric element 4, the control element 7 can output a drive signal with a set frequency and amplitude to the piezoelectric element 4 to control the vibration frequency and amplitude of the vibrator 3, so that the ultrasonic vibration parameters on the surface of the lens 2 are adjustable and controllable. Thus, the cleaning intensity can be flexibly adjusted according to different cleaning needs (such as dust type, degree of adhesion, etc.), avoiding damage to the coating of the lens 2 due to excessive vibration or incomplete cleaning due to insufficient vibration, thereby realizing the fine control of the cleaning function.

[0067] Figure 7 This is a vibration diagram of a camera module provided in one embodiment of this application. The vibration node N in the diagram represents the cross-sectional position where the longitudinal amplitude of the vibrating body 3 is close to 0. From... Figure 7 As can be seen, in this embodiment, the vibration node N is closer to the lower part of the vibrating body 3. After the vibrating body 3 is driven by the piezoelectric element 4 to generate longitudinal vibration, the vibration of the vibrating body 3 can be transmitted upward more, which enhances the amplitude of the upper lens 2 of the vibrating body 3.

[0068] This application provides an electronic device that includes the camera module described above.

[0069] In the above embodiments, the electronic device includes, but is not limited to, one of the following: smartwatch, mobile phone, tablet computer, e-book reader, audio player, video player, computer, set-top box, smart TV, wearable device, and vehicle.

[0070] The piezoelectric element 4 of the camera module of the above-mentioned electronic device can realize the ultrasonic vibration of the vibrator 3. The bending setting of the vibrator 3 gives it good longitudinal stiffness, which enables the vibrator 3 to efficiently transmit ultrasonic high-frequency vibration to the lens 2. The vibrator 3 also has good lateral stiffness, which can avoid structural damage caused by high-frequency vibration, improve the self-cleaning efficiency of the camera module, and ensure the shooting reliability of the electronic device.

[0071] While specific embodiments of this application have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of this application. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Claims

1. A camera module, characterized in that, include: A housing (1) and a lens (2), wherein an assembly opening (11) is formed on the housing (1) and the lens (2) is disposed in the assembly opening (11). A vibrating body (3) and a piezoelectric element (4), wherein the vibrating body (3) is disposed inside the housing (1); The vibrating body (3) includes a first vibrating part (31) and a second vibrating part (32) in an annular shape, with a bending angle between the first vibrating part (31) and the second vibrating part (32). The end of the first vibrating part (31) away from the second vibrating part (32) is connected to the lens (2). The piezoelectric element (4) is connected to the end of the second vibrating part (32) away from the first vibrating part (31) and can drive the vibrating body (3) to vibrate.

2. The camera module according to claim 1, characterized in that, The bending angle is 70°-120°.

3. The camera module according to claim 1, characterized in that, The first vibration part (31) and the second vibration part (32) form a bending angle toward the center of the housing (1).

4. The camera module according to claim 1, characterized in that, The edge of the assembly opening (11) has an annular limiting surface (111), and the lens (2) has an annular assembly surface (21), which fits against the annular limiting surface (111).

5. The camera module according to claim 1, characterized in that, The first vibration part (31) includes a first vibration segment (311) and a first support block (312). The first vibration segment (311) is connected between the second vibration part (32) and the first support block (312). The top surface of the first support block (312) is connected to the lens (2). The outer side of the first support block (312) is threadedly engaged with the inner side of the housing (1).

6. The camera module according to claim 5, characterized in that, The second vibration part (32) includes a second vibration segment (321) and a second support block (322). The second vibration segment (321) is connected to the first vibration segment (311) and forms the bending angle. The second support block (322) is connected to the end of the second vibration segment (321) away from the first vibration segment (311) and is configured to house the piezoelectric element (4).

7. The camera module according to claim 1, characterized in that, It also includes a connector (5), at least a portion of which is sandwiched between the first vibrating part (31) and the lens (2).

8. The camera module according to claim 7, characterized in that, The connector (5) includes a connecting section (51) and a fixing section (52), and there is an assembly space between the lens (2) and the housing (1); The connecting section (51) is sandwiched between the first vibrating part (31) and the lens (2), and the fixing section (52) is disposed in the assembly space and fixed to the housing (1).

9. The camera module according to claim 1, characterized in that, It also includes a counterweight (6) and a control element (7), the counterweight (6) being connected inside the housing (1), and the control element (7) being disposed inside the housing (1) and electrically connected to the piezoelectric element (4).

10. An electronic device, characterized in that, Includes the camera module as described in any one of claims 1-9.

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