Camera module and electronic device

Abstract

The application provides a camera module and an electronic device. One or both of a pair of impact surfaces opposite to each other between two structural members capable of relative movement in the camera module can be coated with a dustproof material. The dustproof material can be one or more of an oil material, a fat material, or a soft rubber material. The dustproof material can have certain adhesion. In one aspect, part of the mechanical energy during the collision of the two impact surfaces can be converted into internal energy by the dustproof material. In another aspect, debris and particles, dust, and the like generated by the collision in the camera module can be adhered by the dustproof material. The influence of the debris, particles, and dust on the propagation of the imaging light of the camera module is smaller, and the imaging quality of the camera module and the electronic device can be improved to a certain extent.

Description

Camera modules and electronic devices

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on December 8, 2023, with application number 202311693285.7 and invention name “Camera module and electronic device”, the entire contents of which are incorporated by reference into this application.

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on January 29, 2024, with application number 202410124692.4 and invention name “Camera module and electronic device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of terminal device hardware, and specifically, to a camera module and electronic equipment. Background Art

[0004] Camera modules with focusing, focusing or anti-shake functions can generally use driving components to drive the lens or sensor in the module to move and achieve the corresponding functions. The driving component will collide with other components in the lens module during movement. Similarly, when an electronic device containing a lens module falls, collisions may also occur between the internal components of the lens module. Different structures may generate debris during collision and friction. If these debris blocks the propagation of incident light (for example, falling on optical devices such as imaging sensors or filters), it will cause problems such as black spots that affect image quality.

[0005] How to reduce the adverse effects of debris generated by collisions between different components in the lens module on imaging quality is an issue worth considering.

[0006] Summary of the Invention

[0007] The present application provides a camera module and an electronic device, in which the collision surfaces of two structural parts in the camera module that may collide with each other can be coated with dust-proof material. The dust-proof material can be one or more of oil materials, lipid materials or soft rubber materials. The probability of dust generation due to collision of structural parts is smaller, and the particles, dust and debris generated by the collision in the camera module can be adhered to the dust-proof material to a certain extent, so that the imaging quality of the camera module is higher.

[0008] In a first aspect, a camera module is provided, comprising: a lens, a movable part, a fixed part and a photosensitive element, wherein the movable part comprises a first impact surface; the fixed part comprises a second impact surface; the movable part is configured to be able to approach the fixed part along a target direction; wherein the first impact surface and the second impact surface are the two surfaces with the smallest distance between the movable part and the fixed part in the target direction, and the first impact surface and / or the second impact surface are coated with a dustproof material, and the dustproof material comprises one or more of the following: an oil material, a lipid material or a soft rubber material.

[0009] In a possible implementation, the movable part may approach the fixed part according to a preset trajectory, or the movable part may approach the fixed part due to reasons such as squeezing or collision of the camera module.

[0010] In this technical solution, one or both of the opposing impact surfaces in the camera module can be coated with a dust-proof material. This material, such as an oil, lipid, or soft rubber, can convert mechanical energy from collisions into internal energy to a certain extent, thereby reducing the likelihood of dust generation from collisions between structural components. This technical solution helps reduce the adverse effects of collision-induced debris on imaging light within the camera module, thereby improving the camera module's imaging quality to a certain extent.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the storage modulus E of the dustproof material at 25° C. satisfies: E≤50 kPa.

[0012] The dustproof material can be a liquid at room temperature. This liquid dustproof material facilitates application to the impact surface of the camera module, simplifying the processing and production of the camera module. During actual manufacturing, the liquid dustproof material can be sprayed onto different areas of the impact surface at multiple points, depending on the size of the impact surface. Vibration is then used to cause the fluid dustproof material to flow and coat the impact surface.

[0013] In combination with the first aspect, in certain implementations of the first aspect, a viscosity η of the dustproof material at 25° C. satisfies: η ≥ 5000 mPa·s.

[0014] The dustproof material has a certain degree of adhesion, so that debris or dust in the camera module can be adhered to the dustproof material. The implementation of this technical solution is conducive to further reducing the adverse impact of debris caused by collision in the camera module on the imaging light.

[0015] In combination with the first aspect, in certain implementations of the first aspect, the mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%.

[0016] The dust-proof material may have certain high-temperature resistance or thermal stability. The implementation of this technical solution is conducive to improving the anti-shake performance, focusing and focusing performance, and the stability of imaging quality during the use of the camera module.

[0017] In combination with the first aspect, in certain implementations of the first aspect, the target direction is the axial direction of the lens, and the first impact surface and the second impact surface are perpendicular to the axial direction of the lens.

[0018] In some scenarios, the above technical solution can also be understood as that the first impact surface and the second impact surface can be a set of impact surfaces caused by the automatic focus or focus adjustment function of the camera module.

[0019] Focusing and adjusting focus are common shooting scenarios for camera modules. This technical solution improves the commonly used transmission structure of camera modules, which is conducive to improving the pertinence and effectiveness of the application of dust-proof materials in camera modules, and is conducive to improving the reliability of the camera module's shooting function and the stability of the imaging quality in these scenarios.

[0020] In combination with the first aspect, in certain implementations of the first aspect, the target direction is perpendicular to the axial direction of the lens, and the first impact surface and the second impact surface are parallel to the axial direction of the lens.

[0021] In some scenarios, the above technical solution can also be understood as follows: the first impact surface and the second impact surface can be a pair of impact surfaces caused by the camera module's anti-shake function. The anti-shake function can be achieved by driving the lens to move, i.e., lens anti-shake, or by driving the photosensitive element to move, i.e., sensor anti-shake.

[0022] Anti-shake is a common shooting scenario for camera modules. This technical solution improves the commonly used transmission structure of camera modules, which is conducive to improving the targeted and effective application of dust-proof materials in camera modules, and is conducive to improving the reliability of the camera module's shooting function and the stability of imaging quality in these scenarios.

[0023] In combination with the first aspect, in certain implementations of the first aspect, the movable part is mounted on the periphery of the lens, there are multiple first impact surfaces, and the multiple first impact surfaces are located on two end surfaces of the movable part that are oppositely arranged along the target direction.

[0024] In some scenarios, the movable part may also be called a lens frame.

[0025] The first impact surfaces on the two opposing end faces of the movable member, positioned in the target direction, respectively correspond to the camera module's focus adjustment or focusing function in opposite directions. Both impact surfaces of the movable member are coated with a dust-proof material. This technical solution further reduces the probability of dust generation from structural member collisions during camera module focus adjustment or focusing, thereby improving image quality.

[0026] In combination with the first aspect, in certain implementations of the first aspect, the movable part is arranged on the periphery of the lens, and the movable part includes a main structure located in the middle area and a plurality of first stop structures. The main structure is used to fix the lens, and the plurality of first stop structures are distributed on two side surfaces of the main structure that are arranged opposite to each other along the target direction, and the first impact surface is located on a side of the first stop structure close to the second impact surface.

[0027] In some scenarios, the movable part may also be called a lens frame.

[0028] The first impact surfaces on two opposing sides of the movable element along the target direction correspond to the camera module's anti-shake function in opposite directions. Both impact surfaces of the movable element are coated with dust-proof material. This technical solution further reduces the probability of dust generation from structural component collisions during camera module anti-shake, thereby improving image quality.

[0029] In combination with the first aspect, in certain implementations of the first aspect, the fixing member is sleeved on the outside of the movable member, the fixing member includes a second stop structure, and the second impact surface is located on a side of the second stop structure close to the first impact surface.

[0030] The fixing member can be equipped with a second stop structure corresponding to the first stop structure. The first and second stop structures can be made of materials with properties more suitable for friction and collision, such as materials with better wear resistance and deformation properties. This solution helps reduce the probability of debris and particles caused by collision and wear between different structural components within the camera module affecting image quality.

[0031] In combination with the first aspect, in certain implementations of the first aspect, the camera module further includes a container for accommodating the photosensitive element, and a dust-proof material is coated on an end surface of the container close to the lens.

[0032] Coating the outer side of the container that holds the photosensitive element with dust-proof material helps reduce the chance of particles, dust, and debris in the camera module falling onto the photosensitive element, and to a certain extent also helps improve the imaging quality of the camera module.

[0033] In combination with the first aspect, in certain implementations of the first aspect, the movable part is arranged on the periphery of the photosensitive element, and the movable part includes a main structure located in the middle area and a plurality of first stop structures, the main structure is used to fix the sensor, and the plurality of first stop structures are distributed on two side surfaces of the main structure that are oppositely arranged along the target direction, and the first impact surface is located on a side of the first stop structure close to the second impact surface.

[0034] This technical solution uses moving parts to drive photosensitive elements to achieve anti-shake function.

[0035] The first impact surfaces on two opposing sides of the movable element along the target direction correspond to the camera module's anti-shake function in opposite directions. Both impact surfaces of the movable element are coated with dust-proof material. This technical solution further reduces the probability of dust generation from structural component collisions during camera module anti-shake, thereby improving image quality.

[0036] In combination with the first aspect, in certain implementations of the first aspect, the fixing part is mounted on the outside of the movable part, the fixing part includes a second stop structure, the second impact surface is located on a side of the second stop structure close to the first impact surface, and the end face of the fixing part close to the lens is coated with dust-proof material.

[0037] The fixing member can be equipped with a second stop structure corresponding to the first stop structure. The first and second stop structures can be made of materials with properties more suitable for friction and collision, such as materials with better wear resistance and deformation properties. This solution helps reduce the probability of debris and particles caused by collision and wear between different structural components within the camera module affecting image quality.

[0038] In addition, coating the outside of the fixing parts with dust-proof material helps reduce the probability of particles, dust and debris in the camera module falling onto the photosensitive element, and to a certain extent also helps improve the imaging quality of the camera module.

[0039] In combination with the first aspect, in certain implementations of the first aspect, the movable part is disposed on the periphery of the lens and the photosensitive element, and the fixed part is disposed on the periphery of the movable part.

[0040] In some scenarios, the fixing part may also be called a gimbal fixing seat.

[0041] The detailed description and beneficial effects of the following technical solutions can be referred to the relevant contents of the first aspect, and for the sake of brevity, they are not described in detail below.

[0042] In a second aspect, a variable aperture assembly is provided, comprising: blades, a blade seat and a drive assembly, wherein the drive assembly is sleeved on the outer periphery of the blade seat, the blades are arranged on the end surface of the blade seat away from the drive assembly, and the blade seat includes a third impact surface; the drive assembly includes a fourth impact surface; the drive assembly is configured to be able to rotate around a target rotation axis close to the blade seat; wherein the third impact surface and the fourth impact surface are two surfaces that approach each other during the rotation of the drive assembly, and the third impact surface and / or the fourth impact surface are coated with a dust-proof material, and the dust-proof material includes one or more of the following: oil material, lipid material or soft glue material.

[0043] In combination with the second aspect, in certain implementations of the second aspect, the storage modulus E of the dustproof material at 25° C. satisfies: E≤50 kPa.

[0044] In combination with the second aspect, in certain implementations of the second aspect, a viscosity η of the dustproof material at 25° C. satisfies: η ≥ 5000 mPa·s.

[0045] In combination with the second aspect, in certain implementations of the second aspect, the mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%.

[0046] In combination with the second aspect, in certain implementations of the second aspect, a slot is provided on the outer wall of the blade seat, a protrusion is provided on the inner wall of the drive assembly, the protrusion extends into the slot, the third impact surface is located on the slot, and the fourth impact surface is located on the protrusion.

[0047] In a third aspect, a camera module is provided, comprising a lens, a photosensitive element, and a variable aperture assembly according to the second aspect and any possible implementation thereof, wherein the variable aperture assembly is located on a side of the lens away from the photosensitive element.

[0048] In a fourth aspect, an electronic device is provided, comprising a middle frame and the camera module of the first aspect and any possible implementation thereof or the camera module of the third aspect and any possible implementation thereof, wherein the camera module is fixedly connected to the middle frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] FIG1 is a schematic diagram of an electronic device provided in an embodiment of the present application.

[0050] FIG2 is a schematic structural diagram of a camera module provided in an embodiment of the present application.

[0051] FIG3 is a partial enlarged view of the A1 area in FIG2 .

[0052] FIG4 is a schematic diagram of a cross section of a camera module provided in an embodiment of the present application.

[0053] FIG5 is a schematic diagram of a cross section of another camera module provided in an embodiment of the present application.

[0054] FIG6 is a schematic diagram of a cross section of another camera module provided in an embodiment of the present application.

[0055] FIG7 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0056] FIG8 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0057] FIG9 is a schematic structural diagram of another camera module provided in an embodiment of the present application.

[0058] 10 and 11 are schematic structural diagrams of another camera module provided in an embodiment of the present application.

[0059] FIG12 is a schematic diagram of structural components of a variable aperture assembly provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] The following describes embodiments of the present application in detail, and examples of the embodiments of the present application are shown in the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present application and are not to be construed as limiting the present application.

[0061] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meanings understood by persons having ordinary skills in the technical field to which this application belongs. In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like, 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 this application 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 operate in a specific direction, and therefore should not be understood as limiting this application.

[0062] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0063] Before introducing the embodiments of the present application, some terms that may be used in the following content are first explained and illustrated.

[0064] A photosensitive element, or image sensor, is a device that converts optical images into electronic signals. It is widely used in digital cameras and other electro-optical devices. Early image sensors used analog signals, such as video camera tubes. Today, image sensors are primarily categorized into charge-coupled devices (CCDs) and complementary metal-oxide semiconductor (CMOS) active pixel sensors.

[0065] As shown in FIG1 , an electronic device 10 provided in an embodiment of the present application may include a front camera module 11 and / or a rear camera module 12. The camera module provided in the present application may be either the front camera module 11 or the rear camera module 12. In some examples, the electronic device 10 includes a middle frame, and the front camera module 11 and / or the rear camera module 12 may be fixedly connected to the middle frame, thereby being installed in the electronic device 10.

[0066] As shown in Figure 2, this is the first camera module 100 provided in an embodiment of the present application. The first camera module 100 may include a first fixing part 120, a first movable part 130, a lens 140 and a photosensitive element 160. Light from the object being photographed can be incident on the photosensitive element 160 after passing through the lens 140, thereby forming an image.

[0067] The first camera module 100 may further include an aperture 110 . The aperture 110 may be disposed on a side of the lens 140 away from the photosensitive element 160 . The aperture 110 may be used to adjust the size of the light beam projected onto the lens 140 .

[0068] The first camera module 100 may further include a filter 150, which may be disposed between the lens 140 and the photosensitive element 160, and may be disposed near the photosensitive element 160. The filter 150 may filter out light of certain wavelengths or frequencies from the imaging light. For example, the filter 150 may be an infrared cutoff filter or a blue glass filter.

[0069] In some examples, the first movable member 130 can be used to fix the lens 140. For example, the first movable member 130 can be a cylindrical structure with openings at both ends. FIG2 can be understood as a cross-section of the cylindrical first movable member 130 passing through the optical axis of the lens. The inner wall of the first movable member 130 can be provided with grooves for clamping the lens 140 around. The lens 140 can be mounted on the first movable member 130 through these grooves, so that the lens 140 is fixed relative to the first movable member 130. The number of lenses 140 can be one or more, and this application does not impose any restrictions on this.

[0070] The first movable member 130 can move within a first plane (the yz plane in FIG. 2 ). In some examples, the first fixed member 120 can be used to limit the travel of the first movable member 130 within the first plane.

[0071] In some examples, the first fixed member 120 may be similar to a housing structure with holes at both ends, and the first movable member 130 may be disposed inside the first fixed member 120, or in other words, the first fixed member 120 may be sleeved outside the first movable member 130. A certain distance may be provided between the first movable member 130 and the first fixed member 120 to enable the first movable member 130 to move within the interior space of the first fixed member 120 and within the first plane.

[0072] Taking the first movable member 130 moving in the first fixed member 120 along the direction 101 in FIG. 2 as an example, the first movable member 130 located inside the first fixed member 120 can approach or move away from the inner wall of the first fixed member 120 along the direction 101 .

[0073] When the first movable member 130 moves along the direction 101, the first movable member 130 may collide with the first fixed member 120. The collision between the two structural members may generate some debris, which may be located in the path of the imaging light, thereby adversely affecting the imaging quality of the camera module.

[0074] For example, the first movable member 130 may include a first impact surface 131 that may collide with the first fixed member 120, and correspondingly, the first fixed member 120 may include a second impact surface 121 that may collide with the first impact surface 131. In other words, when the first movable member 130 moves along the direction 101, the first impact surface 131 may collide with the second impact surface 121.

[0075] In some examples, the first impact surface 131 may be a continuous area on the outer wall of the first movable member 130, and the distances from different positions within the area to the second impact surface 121 are equal. In other words, when the first impact surface 131 collides with the second impact surface 121, different parts of the first impact surface 131 simultaneously collide with the second impact surface 121. Similarly, the second impact surface 121 may be a continuous area on the inner wall of the first fixed member 120, and the distances from different positions within the area to the first impact surface 131 are equal. In other words, when the first impact surface 131 collides with the second impact surface 121, different parts of the second impact surface 121 simultaneously collide with the first impact surface 131.

[0076] In some examples, a protrusion may be provided on the outer wall of the first movable member 130 on the side closest to the first fixed member 120. During the movement of the first movable member 130 within the first plane, the protrusion may be used to contact or collide with the first fixed member 120. The surface where the protrusion contacts or collides with the first fixed member 120 may be considered the impact surface of the first movable member 130. In some scenarios, such a protrusion may also be referred to as a stopper.

[0077] For example, FIG3 is a partial enlarged view of area A1 in FIG2 , where a surface of the first stopper 132 proximal to the first fixed member 120 can be referred to as a third impact surface 133. In conjunction with FIG2 and FIG3 , the first movable member 130 can include a first stopper 132 . During movement of the first movable member 130 in direction 101 , the first stopper 132 can contact or collide with the first fixed member 120 .

[0078] The first movable member 130 may be provided with multiple, discontinuous stoppers, or in other words, the number of the aforementioned first stoppers 132 may be multiple. During the collision between the first movable member 130 and the first fixed member 120, multiple stoppers may simultaneously contact or collide with the first fixed member 120. In other words, the first movable member 130 may include multiple impact surfaces, and during the collision between the first movable member 130 and the first fixed member 120, multiple impact surfaces may simultaneously contact or collide with the first fixed member 120. In other words, the impact surface of the first movable member 130 may be composed of multiple, discontinuous areas.

[0079] Multiple stops or impact surfaces can be distributed around the periphery of the first movable member 130. During the movement of the first movable member 130 within the first plane, the first movable member 130 can approach the first fixed member 120 in multiple directions. The distribution of the multiple stops around the periphery of the first movable member 130 can match the configured movement direction of the first movable member 130. Figures 4 and 5 exemplify some possible movement directions of the first movable member 130 and the corresponding stop arrangement. The multiple views shown in the figures can be viewed as schematic cross-sectional views of camera modules of different configurations at position CC in Figure 2.

[0080] As shown in FIG4 , the first movable member 130 can move in mutually perpendicular directions 401 and 402. Accordingly, at least four stoppers 132 can be provided on the periphery of the first movable member 130, for example, stoppers 132A, 132B, 132C, and 132D. Stoppers 132A and 132C are located on opposite sides of the first movable member 130 along direction 402, while stoppers 132B and 132D are located on opposite sides of the first movable member 130 along direction 401.

[0081] When the first movable member 130 approaches the first fixed member 120 along direction 401, the stopper 132B and the stopper 132D may contact or collide with the first fixed member 120. Specifically, the surfaces of the stopper 132B and the stopper 132D facing the first fixed member 120 may be configured as impact surfaces. During the contact or collision between the stopper 132B and the stopper 132D and the first fixed member 120, the impact surfaces corresponding to the stopper 132B and the stopper 132D may contact or collide with the first fixed member 120. Similarly, when the first movable member 130 approaches the first fixed member 120 along direction 402, the stopper 132A and the stopper 132C may contact the first fixed member 120. Specifically, the sides of the stopper 132A and the stopper 132C facing the first fixing member 120 can be respectively set as impact surfaces. During the process of the stopper 132A and the stopper 132C contacting or colliding with the first fixing member 120, the impact surfaces corresponding to the stopper 132B and the stopper 132D can respectively contact or collide with the first fixing member 120.

[0082] As shown in FIG5 , the first movable member 130 can move along directions 501, 502, and 503, each with an angle of 60° between two adjacent directions. Accordingly, at least six stoppers 132 may be provided on the periphery of the first movable member 130, for example, stopper 132E, stopper 132F, stopper 132G, stopper 132H, stopper 132I, and stopper 132J. Stoppers 132E and 132H are located on opposite sides of the first movable member 130 along direction 503, stoppers 132F and 132I are located on opposite sides of the first movable member 130 along direction 502, and stoppers 132G and 132J are located on opposite sides of the first movable member 130 along direction 501.

[0083] When the first movable member 130 approaches the first fixed member 120 along direction 501, the stopper 132G and the stopper 132J may contact or collide with the first fixed member 120. Specifically, the surfaces of the stopper 132G and the stopper 132J facing the first fixed member 120 may be configured as impact surfaces. During the process of the stopper 132G and the stopper 132J contacting or colliding with the first fixed member 120, the impact surfaces corresponding to the stopper 132G and the stopper 132J may contact or collide with the first fixed member 120. Similarly, when the first movable member 130 approaches the first fixed member 120 along direction 502, the stopper 132F and the stopper 132I may contact the first fixed member 120. Specifically, the surfaces of stopper 132F and stopper 132I facing first fixed member 120 can be configured as impact surfaces. During contact or collision between stopper 132F and stopper 132I and first fixed member 120, the impact surfaces corresponding to stopper 132F and stopper 132I can contact or collide with first fixed member 120. When first movable member 130 approaches first fixed member 120 along direction 503, stopper 132E and stopper 132H can contact first fixed member 120. Specifically, the surfaces of stopper 132E and stopper 132H facing first fixed member 120 can be configured as impact surfaces. During contact or collision between stopper 132E and stopper 132H and first fixed member 120, the impact surfaces corresponding to stopper 132E and stopper 132H can contact or collide with first fixed member 120.

[0084] Similar to the protrusion structure provided on the first movable member 130, a protrusion may be provided on the inner wall of the first fixed member 120 on the side adjacent to the first movable member 130. During the movement of the first movable member 130 within the first plane, the protrusion may be used to contact or collide with the first movable member 130. The surface where the protrusion contacts or collides with the first movable member 130 may be considered the impact surface of the first fixed member 120. In some scenarios, this protrusion structure may also be referred to as a stopper.

[0085] For example, as shown in FIG2 , first fixed member 120 may include second stopper 122 . During movement of first movable member 130 along direction 101 , second stopper 122 may contact or collide with first movable member 130 . FIG3 is a partial enlarged view of area A1 in FIG2 . A surface of second stopper 122 proximal to first movable member 130 may be referred to as fourth impact surface 123 .

[0086] In some examples, the second stop 122 on the first fixed member 120 can correspond to the first stop 132 on the first movable member 130, so that the collision between the first movable member 130 and the first fixed member 120 can be understood as a collision between the first stop 132 and the second stop 122, or can also be understood as a collision between the third impact surface 123 and the fourth impact surface 133.

[0087] FIG4 and FIG5 exemplarily provide schematic structural diagrams of the two camera modules of the above structures.

[0088] As described above, in FIG4 , the outer wall of the first movable member 130 is provided with stops 132A, 132C, and 132B, 132D, respectively, distributed along directions 401 and 402. In some examples, the inner wall of the first fixed member 120 may be provided with stops 122A, 122B, 122C, and 122D, corresponding to stops 132A, 132B, 132C, and 132D, respectively. Stops 122A and 122C are distributed along direction 402 on opposite sides of the inner wall of the first fixed member 120, while stops 122B and 122D are distributed along direction 401 on opposite sides of the inner wall of the first fixed member 120.

[0089] As the first movable member 130 approaches the first fixed member 120 along direction 401, the stopper 132B may contact or collide with the stopper 122B, or the stopper 132D may contact or collide with the stopper 122D. As the first movable member 130 approaches the first fixed member 120 along direction 402, the stopper 132A may contact or collide with the stopper 122A, or the stopper 132C may contact or collide with the stopper 122C.

[0090] The surfaces where stopper 122A contacts stopper 132A can be considered the aforementioned third impact surface 123, and the surfaces where stopper 132A contacts stopper 122A can be considered the aforementioned fourth impact surface 133. Similarly, the surfaces where stopper 122B contacts stopper 132B, the surfaces where stopper 122C contacts stopper 132C, and the surfaces where stopper 122D contacts stopper 132D can also be considered the aforementioned third impact surface 123. The surfaces where stopper 132B contacts stopper 122B, the surfaces where stopper 132C contacts stopper 122C, and the surfaces where stopper 132D contacts stopper 122D can also be considered the aforementioned fourth impact surface 133.

[0091] As described above, in FIG5 , the outer wall of first movable member 130 is provided with stoppers 132E, 132F, 132G, 132H, 132G, and 132H, respectively distributed along directions 501, 502, and 503. In some examples, the inner wall of first fixed member 120 may be provided with stoppers 122E, 122F, 122G, 122H, 122I, and 122J, respectively corresponding to the aforementioned six stoppers. Among them, the stopper 122E and the stopper 122H are distributed on two opposite sides of the inner wall of the first fixing member 120 along direction 503, the stopper 122F and the stopper 122I are distributed on two opposite sides of the inner wall of the first fixing member 120 along direction 502, and the stopper 122G and the stopper 122J are distributed on two opposite sides of the inner wall of the first fixing member 120 along direction 501.

[0092] As the first movable member 130 approaches the first fixed member 120 along direction 501, stopper 132G may contact or collide with stopper 122G, or stopper 132J may contact or collide with stopper 122J. As the first movable member 130 approaches the first fixed member 120 along direction 502, stopper 132F may contact or collide with stopper 122F, or stopper 132I may contact or collide with stopper 122I. As the first movable member 130 approaches the first fixed member 120 along direction 501, stopper 132G may contact or collide with stopper 122G, or stopper 132J may contact or collide with stopper 122J.

[0093] The surfaces where stopper 122E contacts stopper 132E can be considered the aforementioned third impact surface 123, and the surfaces where stopper 132E contacts stopper 122E can be considered the aforementioned fourth impact surface 133. Similarly, the surfaces where stopper 122F contacts stopper 132F, the surfaces where stopper 122G contacts stopper 132G, the surfaces where stopper 122H contacts stopper 132H, and the surfaces where stopper 122I contacts stopper 132I can also be considered the aforementioned third impact surface 123. The surfaces where stopper 132F contacts stopper 122F, the surfaces where stopper 132G contacts stopper 122G, the surfaces where stopper 132H contacts stopper 122H, and the surfaces where stopper 132I contacts stopper 132I can also be considered the aforementioned fourth impact surface 133.

[0094] The first stopper 132 and the second stopper 122 are positioned correspondingly, namely, specific structures are provided on the first movable member 130 and the first fixed member 120, respectively, to facilitate interaction between them. The first and second stoppers 132, 122 can be constructed of materials with properties more suitable for friction and collision, such as materials with improved wear resistance and deformation properties. This solution helps reduce the likelihood of debris and particles from collision and wear between different structural components within the camera module, which could affect image quality.

[0095] In some examples, the second stopper 122 on the first fixed member 120 may correspond to the first impact surface 131, and the first stopper 132 on the first movable member 130 may correspond to the second impact surface 121. Alternatively, the second stopper 122 on the first fixed member 120 may not correspond to the first stopper 132 on the first movable member 130. In this case, during the collision between the first movable member 130 and the first fixed member 120, the first stopper 132 on the first movable member 130 may contact or collide with an area on the inner wall of the first fixed member 120 that is not the second stopper 122, and the second stopper 122 on the first fixed member 120 may contact or collide with an area on the outer wall of the first movable member 130 that is not the first stopper 132.

[0096] Figure 6 provides an exemplary structural diagram of the camera module structure described above. The first movable member 130 can move along directions 601, 602, and 603, each with a 60° angle between two adjacent directions. Accordingly, the periphery of the first movable member 130 can be provided with a plurality of stops 132, such as stop 132K, stop 132L, and stop 132M. Stops 132L and 132M are located on opposite sides of the first movable member 130 along direction 601, while stop 132K is located on the outside of the first movable member 130 along direction 602.

[0097] The inner wall of the first fixing member 120 may be provided with a plurality of stoppers 122, for example, stoppers 122K, 122L, and 122M. Stoppers 122L and 122M are located on opposite sides of the first fixing member 120 along direction 603, while stoppers 122K are located on the inner wall of the first fixing member 120 along direction 602.

[0098] When the first movable member 130 moves in direction 601 and collides with the first fixed member 120, the stopper 132L and the stopper 132M located on the outside of the first movable member 130 may contact or collide with the inner wall of the first fixed member 120. When the first movable member 130 moves in direction 602 and collides with the first fixed member 120, the stopper 132K located on the outside of the first movable member 130 may contact or collide with the inner wall of the first fixed member 120. Alternatively, a non-stopper area of ​​the outer wall of the first movable member 130 may contact or collide with the stopper 122K located on the inner wall of the first fixed member 120. When the first movable member 130 moves in direction 603 and collides with the first fixed member 120, the outer wall of the first movable member 130 may contact or collide with the stopper 122L or the stopper 122M located on the inner wall of the first fixed member 120.

[0099] A stopper is provided only on the side where the first fixed part 120 or the first movable part 130 collides with each other, and the movable space required to be reserved between the first fixed part 120 and the first movable part 130 is smaller. The implementation of this technical solution is conducive to improving the utilization efficiency of the internal space of the camera module, and is also conducive to reducing the volume of the camera module to a certain extent.

[0100] The impact surface provided on the first movable member 130 may be a flat surface, a convex surface, or a concave surface, and the shape of the impact surface may match the shape of the surface with which the impact surface contacts the first movable member 130. In the case where the pair of impact surfaces in contact are respectively a concave surface and a convex surface, the surface curvature of the concave surface may match the surface curvature of the convex surface.

[0101] For example, in FIG. 2 , the first impact surface 131 and the second impact surface 121 may both be planes.

[0102] For example, in FIG4 , the impact surfaces of stopper 132A, stopper 132B, stopper 132C and stopper 132D are also planes. Accordingly, the impact surfaces of stopper 122A, stopper 122B, stopper 122C and stopper 122D corresponding to stopper 132A, stopper 132B, stopper 132C and stopper 132D respectively may also be planes.

[0103] For example, in FIG5 , the impact surfaces of stoppers 132E, 132F, 132G, 132H, and 132I are all convex, while the impact surfaces of stoppers 122E, 122F, 122G, 122H, and 122I corresponding to these six stoppers may all be concave. The surface shape of the concave impact surface of a pair of opposing impact surfaces matches the surface shape of the convex impact surface. For example, the surface shape of the impact surface of stopper 132E matches the surface shape of the impact surface of stopper 122E.

[0104] For example, in FIG6 , the inner wall of the first fixed member 120 is concave, and the impact surfaces of the stoppers 132K, 132L, and 132M that collide with the inner wall of the first fixed member 120 can all be convex. The outer wall of the first movable member 130 is convex, and the impact surfaces of the stoppers 122K, 122L, and 122M that collide with the outer wall of the first movable member 130 can all be concave. The surface shape of the concave impact surface of the pair of opposing impact surfaces matches the surface shape of the convex impact surface. For example, the surface shape of the impact surface of the stopper 132K matches the surface shape of the impact position of the inner wall of the first fixed member 120, and the surface shape of the impact surface of the stopper 122K matches the surface shape of the impact position of the outer wall of the first movable member 130.

[0105] The first plane in which the first movable part 130 moves is perpendicular to the optical axis O1O1 of the lens 140. In the process of the first movable part 130 driving the lens 140 to move in the first plane, the position of the incident point of the light on the lens 140 can change, thereby adjusting the position of the imaging light incident on the photosensitive element 160 to a certain extent, that is, realizing the anti-shake function of the first camera module 100.

[0106] The setting of a pair of impact surfaces with matching shapes is beneficial to increasing the contact area between the fixed part and the movable part during the collision, which is beneficial to improving the stability of the movable part during the movement and braking processes, which is beneficial to improving the reliability of the anti-shake function of the camera module and the imaging quality of the camera module.

[0107] The first impact surface 131 can be considered a relatively large, continuous area on the outer wall of the first movable member 130, and the third impact surface 133 can be considered a single area or multiple discontinuous areas on the outer wall of the first movable member 130. Similarly, the second impact surface 121 can be considered a relatively large, continuous area on the inner wall of the first fixed member 120, and the fourth impact surface 143 can be considered a single area or multiple discontinuous areas on the inner wall of the first fixed member 120.

[0108] It should be noted that this application does not limit the size, number, shape, distribution, or mutual relationship of the impact surfaces of the first movable member 130 and the first fixed member 120 that contact or collide with each other. The above description of the first impact surface 131, the third impact surface 132, etc. is merely exemplary and should not be construed as limiting this application. In some examples, the first movable member 130 and the first fixed member 120 may also adopt a protrusion and recessed matching method. For example, a protrusion structure is provided on the first movable member 130, and a recessed structure is provided on the first fixed member 120. When the first movable member 130 and the first fixed member 120 collide, the protrusion structure on the first movable member 130 may extend into the recessed structure on the first fixed member 120.

[0109] To reduce the probability of dust generation due to the collision between the first movable member 130 and the first fixed member 120 , in some examples, a certain amount of dust-proof material may be coated on the collision surface of the first movable member 130 and / or the first fixed member 120 .

[0110] Exemplarily, the dustproof material may be coated on the aforementioned first impact surface 131 , or the dustproof material may also be coated on the aforementioned second impact surface 121 , or the dustproof material may be coated on both the first impact surface 131 and the second impact surface 121 .

[0111] Exemplarily, the dustproof material may be coated on the third impact surface 133 , or the dustproof material may be coated on the fourth impact surface 123 , or the dustproof material may be coated on both the third impact surface 133 and the fourth impact surface 123 .

[0112] Dustproof materials can be one or more of the following: oils, lipids, or soft rubbers. Oils can include mineral oils, synthetic oils, animal or plant oils, or water-based liquids. Lipids can include soap-based lipids, hydrocarbon-based lipids, inorganic lipids, or organic lipids. Soft rubbers can include silicone, thermoplastic elastomers (TPE), thermoplastic polyurethanes (TPU), polyvinyl chloride (PVC), or rubber.

[0113] The dustproof material can be composed of materials with good high temperature resistance, low temperature stability, oxidation resistance, hydrophobicity and electrical insulation, etc.

[0114] In some examples, the dust-proof material may include one or more of the following materials: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. In other words, the dust-proof material may include only one of fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds, or the dust-proof material may include two or three of the following: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds.

[0115] In the case where the dustproof material includes multiple types of the above three types of organic matter, this application does not limit the component content of different types of organic matter in the dustproof material.

[0116] In some examples, the main components of the dust-proof material may include one or more functional groups: -CF-, -CF2-, or -CF3.

[0117] For example, the dustproof material containing the above functional groups may be composed of one or more of the following: one or more of fluorocarbons, fluoroethers, fluoroalcohols, fluoroketones, or fluorocarboxylic acids. For example, the dustproof material may include fluoro oil and / or fluoro resin.

[0118] In some scenarios, fluorocarbons may also be referred to as fluorocarbon organics. For example, fluorocarbons may be fluoroalkanes, fluoroalkenes, or fluoroalkynes, such as carbon tetrafluoride, tetrafluoroethylene, or hexafluoropropylene.

[0119] In some scenarios, fluoroether may also be referred to as fluoroether organic matter. For example, fluoroether may be perfluoroethyl ether, difluoroethyl ether, or trifluoroethyl ether.

[0120] For example, the fluoroalcohol may be perfluoromethanol, perfluoroethanol, or perfluoropropanol, etc. The fluoroketone may be perfluoroacetone, difluorohexanone, or trifluoromethylketone, etc. The fluorocarboxylic acid may be difluoroacetic acid, trifluoromethylpropionic acid, or heptafluorodecanoic acid, etc.

[0121] For example, the present application can determine the functional groups and chemical bonds of the components of the dustproof material by Fourier transform infrared spectroscopy (FTIR) testing. FTIR can analyze the types of chemical functional groups and chemical bonds contained in the compound molecules contained in the sample by testing the absorption characteristics of the sample for infrared light. In the FTIR spectrum, the horizontal axis usually represents the wave number (cm -1 ), which represents the frequency of infrared radiation. The vertical axis represents transmittance, absorbance, or reflectance, etc., reflecting the degree of absorption of infrared light of a specific wavelength by the sample under test.

[0122] For example, the dustproof material is subjected to FTIR testing. If the wave number is 1240 cm -1If an absorption peak can be detected near the wave number 1190cm, it can be said that there is a functional group -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be said that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it can be said that there is a functional group -CF3 in the components of the dust-proof material.

[0123] The above FTIR test results can also show that the components of the dustproof material include carbon and fluorine elements. According to the FTIR test results, it can be determined that the components of the dustproof material may be fluorocarbon organic matter, for example, the components of the dustproof material may be polytetrafluoroethylene (C2F4)n, etc.

[0124] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0125] For example, the dustproof material is subjected to FTIR testing. If the wave number is 990 cm -1 If an absorption peak can be detected near the wave number 1240cm, and the absorption peak is sharp and strong, it can be said that there is a functional group -COC- in the components of the dustproof material. In addition, if the FTIR test result is at the wave number 1240cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there are functional groups -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be shown that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it means that the functional group -CF3 still exists in the components of the dust-proof material.

[0126] The above FTIR test results can also show that the components of the dustproof material contain carbon, fluorine and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material can be fluoroether organic matter (fluoroether). For example, the components of the dustproof material can be perfluoropolyether (CF3O[-CF(CF3)CF2O-] x (-CF2O-)yCF3), perfluoroethyl ether or difluoroethyl ether, etc.

[0127] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0128] In some examples, the main component of the dust-proof material may include the functional group -Si-O-. The main component of the dust-proof material may further include one or more of the following functional groups: -CH3, -CH2-, or -CH-.

[0129] Illustratively, the component of the dust-proof material containing the above functional groups may be a silicon-containing organic matter. Illustratively, the silicon-containing organic matter may be one or more of the following: silane, silanol or organosiloxane.

[0130] For example, the silane may be methylsilane or dimethylsilane, and the silanol may be trimethylsilanol or triethoxysilanol.

[0131] For example, the organosiloxane may be dimethylsiloxane, polydimethylsiloxane (C2H6OSi)n, vinylsiloxane, silicone resin, or the like.

[0132] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0133] Perform FTIR test on dustproof materials. If the wave number is 1092cm -1 If an absorption peak can be detected near the wave number 3000cm, it can be said that the dustproof material contains -Si-O- chemical bonds. -1 to 2840cm -1 If an absorption peak can be detected within the range of , it can be explained that the components of the dust-proof material also contain one or more of the following functional groups: -CH3, -CH2- or -CH-.

[0134] The above FTIR test results can also indicate that the components of the dustproof material include carbon, silicon and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material may include organic siloxane, for example, the components of the dustproof material may include polyorganosiloxane or silicone resin.

[0135] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -Si-C-, etc., and this application does not impose any limitation on this.

[0136] In some examples, the main component of the dust-proof material may include only one or more of the functional groups -CH3, -CH2-, or -CH-.

[0137] Illustratively, the dust-proof material may mainly contain hydrocarbon organic matter, and the hydrocarbon organic matter may be one or more of alkanes, olefins, aromatic hydrocarbons, and the like.

[0138] For example, the alkane may include a linear alkane, a cycloalkane, etc., for example, a linear alkane or a cycloalkane having 15 to 40 carbon atoms in the molecule. The aromatic hydrocarbon may include a low molecular weight polycyclic aromatic hydrocarbon, etc.

[0139] For example, the olefin may include polyalphaolefins (PAO). Here, polyalphaolefin refers to an organic compound obtained from alpha olefins through polymerization, etc., wherein alpha olefin refers to a type of monoolefin having a double bond located at the end of the molecular chain (i.e., the first carbon atom), common examples of which include ethylene, propylene, 1-butene, 1-hexene, etc.

[0140] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0141] Perform FTIR testing on dustproof materials. If the wave number is 2960cm -1 Nearby, 2870cm -1 Nearby and 1380cm -1 If an absorption peak is detected near the wave number 2930cm -1 Nearby and 2850cm -1 If an absorption peak can be detected near the wave number 1460cm, it can be determined that the dustproof material may contain a functional group -CH2-. -1 If an absorption peak can be detected near the wave number 722cm, it can be determined that the components of the dustproof material may contain alkyl groups. -1 If an absorption peak is detected near , it can be determined that the components of the dust-proof material may contain alkanes with multiple carbon numbers.

[0142] The above FTIR test results can also indicate that the components of the dust-proof material contain carbon and hydrogen elements. According to the FTIR test results, it can be determined that the components of the dust-proof material may contain one or more functional groups -CH3, -CH2- or -CH-. For example, the components of the dust-proof material may include polyalphaolefin.

[0143] In some examples, the dustproof material may include multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. Alternatively, the dustproof material may be a mixture of multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. FTIR testing of the multiple different types of materials may reveal characteristic peaks of different functional groups within the different types of materials.

[0144] Illustratively, the dust-proof material may be composed of one or more of the following: fluorocarbon organic matter, fluoroether organic matter, organosiloxane or polyalphaolefin.

[0145] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and fluoroether organics can detect characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -COC-.

[0146] For example, when a dustproof material containing fluorocarbon organic matter and organopolysiloxane is subjected to FTIR testing, characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -Si-O- can be detected.

[0147] For example, by performing FTIR testing on a dust-proof material comprising a fluoroether organic compound and an organopolysiloxane, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CF-, -CF2-, or -CF3 can be detected.

[0148] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and polyalphaolefins can detect characteristic peaks reflecting stretching vibrations of one or more of the functional groups -CF-, -CF2- or -CF3 and one or more of the functional groups -CH3, -CH2- or -CH-.

[0149] For example, when performing FTIR testing on a dustproof material containing a fluoroether organic compound and a poly-alpha-olefin, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CH3, -CH2-, or -CH- can be detected.

[0150] It should be noted that using FTIR to detect the components of dust-proof materials is only a test method for determining the components of dust-proof materials and should not be regarded as a limitation on the components of dust-proof materials. There are many other methods to determine the components of dust-proof materials, for example, through nuclear magnetic resonance testing, Raman spectroscopy testing, etc. This application does not impose any restrictions on this.

[0151] It should also be noted that FTIR test results are affected by a variety of factors, including environmental factors, sample factors, and operating methods. Errors introduced by these factors may, to a certain extent, cause deviations in the test results. In other words, the locations of the characteristic peaks reflected in the FTIR test results for the dust-proof material components described above are merely illustrative. The actual locations of the characteristic peaks may deviate from the locations provided in this application. The locations of the characteristic peaks in the examples above should not be construed as limiting this application.

[0152] In some examples, the dustproof material can be a material that is liquid at room temperature. Liquid dustproof material facilitates application to the impact surface of the camera module, simplifying the processing and production of the camera module. For example, the storage modulus E of the dustproof material at 25°C satisfies the following: E ​​≤ 50 kPa. For example, the E of the dustproof material at 25°C can be 40 kPa, 30 kPa, 20 kPa, or 10 kPa.

[0153] In the actual manufacturing process, the liquid dust-proof material can be sprayed at multiple points on different areas of the impact surface according to the size of the impact surface, and then the fluid dust-proof material can be made to flow and coat the impact surface through vibration.

[0154] In some examples, the dustproof material has a certain degree of adhesion, allowing debris or dust in the camera module to adhere to the dustproof material. For example, the viscosity η of the dustproof material at 25°C satisfies: η ≥ 5000 mPa·s. For example, the viscosity η of the dustproof material at 25°C can be 10000 mPa·s, 15000 mPa·s, 20000 mPa·s, or 25000 mPa·s.

[0155] In order to improve the stability of the dust-proof material and improve the anti-shake performance and imaging quality stability during the use of the camera module, in some examples, the dust-proof material may have certain high temperature resistance or thermal stability.

[0156] For example, the mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%. For example, α can be 0.20%, 0.15%, 0.10%, or 0.05%.

[0157] In some examples, the dustproof material can be applicable to a relatively wide temperature range. For example, within the temperature range of -30°C to 120°C, the storage modulus E of the dustproof material can satisfy: E≤150kPa, and the viscosity η satisfies: η≥4000mPa·s.

[0158] In some examples, the first camera module 100 may further include a container, which may be used to accommodate the aforementioned photosensitive element 160 , and the end surface of the container close to the lens 140 may also be coated with a dust-proof material.

[0159] FIG7 shows a second camera module 200 according to an embodiment of the present application. The second camera module 200 includes a lens holder 220, a lens 230, a second fixing member 240, a second movable member 260, and a photosensitive element 270. Light from the subject passes through the lens 230 and is incident on the photosensitive element 270, thereby forming an image.

[0160] The second camera module 200 may further include an aperture 210 , which may be disposed on a side of the lens 230 away from the photosensitive element 270 . The aperture 210 may be used to adjust the size of the light beam projected onto the lens 230 .

[0161] The second camera module 200 may further include a filter 250, which may be disposed between the lens 230 and the photosensitive element 270, and may be disposed near the photosensitive element 270. The filter 250 may filter out light of certain wavelengths or frequencies from the imaging light. For example, the filter 250 may be an infrared cutoff filter or a blue glass filter.

[0162] The lens holder 220 can be used to fix the lens 230, or in other words, the lens 230 can be installed inside the lens holder 220. The number of the lens 230 can be one or more, and this application does not impose any limitation on this.

[0163] The photosensitive element 270 may be fixedly connected to the second movable member 260, or in other words, the photosensitive element 270 may be mounted on the second movable member 260. For example, the second movable member 260 may be a box-shaped structure with one end open, the opening of the second movable member 260 facing the lens 230, and a connecting member may be provided inside the second movable member 260 for fixedly connecting to the photosensitive element 270.

[0164] In some examples, the second movable member 260 may be configured to move within a second plane, which may be considered as the yz plane in Figure 7. The second fixing member 240 may be used to limit the travel of the second movable member 260 within the second plane.

[0165] For example, the second fixed member 240 may be similar to a housing that is sleeved around the outer periphery of the second movable member 260, or in other words, the second movable member 260 may be disposed inside the second fixed member 240. A certain distance may be provided between the second movable member 260 and the second fixed member 240 so that the second movable member 260 can move inside the second fixed member 240 and within the second plane.

[0166] Taking the second movable member 260 moving along the direction 701 in FIG. 7 within the second fixed member 240 as an example, the second movable member 260 may approach or move away from the inner wall of the second fixed member 240 along the direction 701 .

[0167] As the second movable member 260 moves within the second plane, the outer wall of the second movable member 260 may contact or collide with the inner wall of the second fixed member 240. The collision between the two structural members may generate some debris, which may be located in the path of imaging light, thereby adversely affecting the imaging quality of the camera module.

[0168] In some examples, one or more protruding stoppers may be provided on the outer wall of the second movable member 260. During the movement of the second movable member 260, these stoppers may contact or collide with the inner wall of the second fixed member 240. For example, referring to FIG7 , the outer wall of the second movable member 260 may be provided with a third stopper 262. The surface of the third stopper 262 facing the second fixed member 240 may be considered a fifth impact surface 263. When the second movable member 260 collides with the second fixed member 240, the fifth impact surface 263 of the third stopper 262 may contact or collide with the inner wall of the second fixed member 240.

[0169] In some examples, one or more protruding stoppers may be provided on the inner wall of the second fixed member 240. These stoppers may contact or collide with the outer wall of the second movable member 260 during movement of the second movable member 260. For example, referring to FIG7 , the inner wall of the second fixed member 240 may be provided with a fourth stopper 242. The surface of the fourth stopper 242 facing the second movable member 260 may be considered a sixth impact surface 243. When the second movable member 260 collides with the second fixed member 240, the sixth impact surface 243 of the fourth stopper 242 may contact or collide with the outer wall of the second movable member 260.

[0170] In some examples, the outer wall of the second movable member 260 may not be provided with the third stopper 262 described above. In other words, when the second movable member 260 contacts or collides with the second fixed member 240, a continuous area on the outer wall of the second movable member 260 contacts or collides with the inner wall of the second fixed member 240, rather than the impact surface of the stopper on the outer wall of the second movable member 260 contacting or colliding with the inner wall of the second fixed member 240. In other words, the outer wall of the second movable member 260 may be provided with a first impact surface 131 in the first camera module 100. For example, referring to FIG7 , the second movable member 260 may be provided with a seventh impact surface 261, which collides with the inner wall of the second fixed member 240 when the second movable member 260 collides with the second fixed member 240.

[0171] In some examples, the inner wall of the second fixed member 240 may not be provided with the fourth stopper 242 described above. In other words, when the second movable member 260 contacts or collides with the second fixed member 240, a continuous area on the inner wall of the second fixed member 240 contacts or collides with the outer wall of the second movable member 260, rather than the impact surface of the stopper on the inner wall of the second fixed member 240 contacting or colliding with the outer wall of the second movable member 260. In other words, the inner wall of the second fixed member 240 may be provided with a second impact surface 121 in the first camera module 100. For example, referring to FIG7 , the second fixed member 240 may be provided with an eighth impact surface 241, which collides with the outer wall of the second movable member 260 when the second movable member 260 collides with the second fixed member 240.

[0172] In some examples, the fifth impact surface 263 may correspond to the sixth impact surface 243. In other words, when the second movable member 260 collides with the second fixed member 240, the fifth impact surface 263 may collide with the sixth impact surface 243. In this case, the surface shape of the fifth impact surface 263 may match the surface shape of the sixth impact surface 243. For example, the fifth impact surface 263 and the sixth impact surface 243 may both be planar. For another example, the fifth impact surface 263 may be concave, and the sixth impact surface 243 may be convex to match the concave shape. For another example, the fifth impact surface 263 may be convex, and the sixth impact surface 243 may be concave to match the convex shape.

[0173] In some examples, the fifth impact surface 263 may correspond to the eighth impact surface 241. In other words, when the second movable member 260 collides with the second fixed member 240, the fifth impact surface 263 may collide with the eighth impact surface 241. In this case, the surface shape of the fifth impact surface 263 may match the surface shape of the eighth impact surface 241. For example, the fifth impact surface 263 and the eighth impact surface 241 may both be planar. For another example, the fifth impact surface 263 may be concave, and the eighth impact surface 241 may be convex to match the concave shape. For another example, the fifth impact surface 263 may be convex, and the eighth impact surface 241 may be concave to match the convex shape.

[0174] In some examples, the seventh impact surface 261 may correspond to the sixth impact surface. In other words, when the second movable member 260 collides with the second fixed member 240, the seventh impact surface 261 may collide with the sixth impact surface. In this case, the surface shape of the seventh impact surface 261 may match the surface shape of the sixth impact surface. For example, both the seventh impact surface 261 and the sixth impact surface may be flat. In another example, the seventh impact surface 261 may be concave, and the seventh impact surface 261 may be convex to match the concave shape. In another example, the seventh impact surface 261 may be convex, and the sixth impact surface may be concave to match the convex shape.

[0175] In some examples, the seventh impact surface 261 may correspond to the eighth impact surface 241. In other words, when the second movable member 260 collides with the second fixed member 240, the seventh impact surface 261 may collide with the eighth impact surface. In this case, the surface shape of the seventh impact surface 261 may match the surface shape of the eighth impact surface 241. For example, both the seventh impact surface 261 and the eighth impact surface 241 may be flat. In another example, the seventh impact surface 261 may be concave, and the eighth impact surface 241 may be convex to match the concave shape. In another example, the seventh impact surface 261 may be convex, and the eighth impact surface 241 may be concave to match the convex shape.

[0176] The present application does not impose any restrictions on the size, number, shape, distribution or relationship of the impact surfaces of the second movable part 260 and the second fixed part 240 that contact or collide with each other. The above descriptions of the fifth impact surface 263, the seventh impact surface 261, etc. are merely exemplary and should not be understood as limitations on the present application.

[0177] To reduce the probability of dust generation due to the collision between the second movable member 260 and the second fixed member 240 , in some examples, a certain amount of dust-proof material may be coated on the collision surface of the second movable member 260 and / or the second fixed member 240 .

[0178] Exemplarily, the dustproof material may be coated on the seventh impact surface 261 , or the dustproof material may be coated on the eighth impact surface 241 , or the dustproof material may be coated on both the seventh impact surface 261 and the eighth impact surface 241 .

[0179] Exemplarily, the dustproof material may be coated on the fifth impact surface 263 , or the dustproof material may be coated on the sixth impact surface 243 , or the dustproof material may be coated on both the fifth impact surface 263 and the sixth impact surface 243 .

[0180] Dustproof materials can be one or more of the following: oils, fats, or soft rubbers. Oils can be mineral oils, synthetic oils, animal or plant oils, or water-based liquids. Lipids can be soap-based, hydrocarbon-based, inorganic, or organic. Soft rubbers can be silicone, thermoplastic elastomers, thermoplastic polyurethane elastomers, polyvinyl chloride, or rubber.

[0181] The dustproof material can be composed of materials with good high temperature resistance, low temperature stability, oxidation resistance, hydrophobicity and electrical insulation, etc.

[0182] In some examples, the dust-proof material may include one or more of the following materials: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. In other words, the dust-proof material may include only one of fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds, or the dust-proof material may include two or three of the following: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds.

[0183] In the case where the dustproof material includes multiple types of the above three types of organic matter, this application does not limit the component content of different types of organic matter in the dustproof material.

[0184] In some examples, the main components of the dust-proof material may include one or more functional groups: -CF-, -CF2-, or -CF3.

[0185] For example, the dustproof material containing the above functional groups may be composed of one or more of the following: one or more of fluorocarbons, fluoroethers, fluoroalcohols, fluoroketones, or fluorocarboxylic acids. For example, the dustproof material may include fluoro oil and / or fluoro resin.

[0186] In some scenarios, fluorocarbons may also be referred to as fluorocarbon organics. For example, fluorocarbons may be fluoroalkanes, fluoroalkenes, or fluoroalkynes, such as carbon tetrafluoride, tetrafluoroethylene, or hexafluoropropylene.

[0187] In some scenarios, fluoroether may also be referred to as fluoroether organic matter. For example, fluoroether may be perfluoroethyl ether, difluoroethyl ether, or trifluoroethyl ether.

[0188] For example, the fluoroalcohol may be perfluoromethanol, perfluoroethanol, or perfluoropropanol, etc. The fluoroketone may be perfluoroacetone, difluorohexanone, or trifluoromethylketone, etc. The fluorocarboxylic acid may be difluoroacetic acid, trifluoromethylpropionic acid, or heptafluorodecanoic acid, etc.

[0189] For example, the present application can determine the functional groups and chemical bonds of the components of the dustproof material by Fourier transform infrared spectroscopy (FTIR) testing. FTIR can analyze the types of chemical functional groups and chemical bonds contained in the compound molecules contained in the sample to be tested by testing the absorption characteristics of the sample to be tested for infrared light. In the FTIR spectrum, the horizontal axis usually represents the wave number (cm-1), which represents the frequency of infrared radiation. The vertical axis represents the transmittance, absorbance or reflectance, etc., which reflects the degree of absorption of infrared light of a specific wavelength by the sample to be tested.

[0190] For example, the dustproof material is subjected to FTIR testing. If the wave number is 1240 cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there is a functional group -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be said that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it can be said that there is a functional group -CF3 in the components of the dust-proof material.

[0191] The above FTIR test results can also show that the components of the dustproof material include carbon and fluorine elements. According to the FTIR test results, it can be determined that the components of the dustproof material may be fluorocarbon organic matter, for example, the components of the dustproof material may be polytetrafluoroethylene (C2F4)n, etc.

[0192] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0193] For example, the dustproof material is subjected to FTIR testing. If the wave number is 990 cm -1 If an absorption peak can be detected near the wave number 1240cm, and the absorption peak is sharp and strong, it can be said that there is a functional group -COC- in the components of the dustproof material. In addition, if the FTIR test result is at the wave number 1240cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there are functional groups -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be shown that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it means that the functional group -CF3 still exists in the components of the dust-proof material.

[0194] The above FTIR test results can also show that the components of the dustproof material contain carbon, fluorine and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material can be fluoroether organic matter (fluoroether). For example, the components of the dustproof material can be perfluoropolyether (CF3O[-CF(CF3)CF2O-] x (-CF2O-)yCF3), perfluoroethyl ether or difluoroethyl ether, etc.

[0195] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0196] In some examples, the main component of the dust-proof material may include the functional group -Si-O-. The main component of the dust-proof material may further include one or more of the following functional groups: -CH3, -CH2-, or -CH-.

[0197] Illustratively, the component of the dust-proof material containing the above functional groups may be a silicon-containing organic matter. Illustratively, the silicon-containing organic matter may be one or more of the following: silane, silanol or organosiloxane.

[0198] For example, the silane may be methylsilane or dimethylsilane, and the silanol may be trimethylsilanol or triethoxysilanol.

[0199] For example, the organosiloxane may be dimethylsiloxane, polydimethylsiloxane (C2H6OSi)n, vinylsiloxane, silicone resin, or the like.

[0200] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0201] Perform FTIR test on dustproof materials. If the wave number is 1092cm -1 If an absorption peak can be detected near the wave number 3000cm, it can be said that the dustproof material contains -Si-O- chemical bonds. -1 to 2840cm -1 If an absorption peak can be detected within the range of , it can be explained that the components of the dust-proof material also contain one or more of the following functional groups: -CH3, -CH2- or -CH-.

[0202] The above FTIR test results can also indicate that the components of the dustproof material include carbon, silicon and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material may include organic siloxane, for example, the components of the dustproof material may include polyorganosiloxane or silicone resin.

[0203] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -Si-C-, etc., and this application does not impose any limitation on this.

[0204] In some examples, the main component of the dust-proof material may include only one or more of the functional groups -CH3, -CH2-, or -CH-.

[0205] Illustratively, the dust-proof material may mainly contain hydrocarbon organic matter, and the hydrocarbon organic matter may be one or more of alkanes, olefins, aromatic hydrocarbons, and the like.

[0206] For example, the alkane may include a linear alkane, a cycloalkane, etc., for example, a linear alkane or a cycloalkane having 15 to 40 carbon atoms in the molecule. The aromatic hydrocarbon may include a low molecular weight polycyclic aromatic hydrocarbon, etc.

[0207] For example, the olefin may include polyalphaolefins (PAO). Here, polyalphaolefin refers to an organic compound obtained from alpha olefins through polymerization, etc., wherein alpha olefin refers to a type of monoolefin having a double bond located at the end of the molecular chain (i.e., the first carbon atom), common examples of which include ethylene, propylene, 1-butene, 1-hexene, etc.

[0208] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0209] Perform FTIR testing on dustproof materials. If the wave number is 2960cm -1 Nearby, 2870cm -1 Nearby and 1380cm -1 If an absorption peak is detected near the wave number 2930cm -1 Nearby and 2850cm -1 If an absorption peak can be detected near the wave number 1460cm, it can be determined that the dustproof material may contain a functional group -CH2-. -1 If an absorption peak can be detected near the wave number 722cm, it can be determined that the components of the dustproof material may contain alkyl groups. -1 If an absorption peak is detected near , it can be determined that the components of the dust-proof material may contain alkanes with multiple carbon numbers.

[0210] The above FTIR test results can also indicate that the components of the dust-proof material contain carbon and hydrogen elements. According to the FTIR test results, it can be determined that the components of the dust-proof material may contain one or more functional groups -CH3, -CH2- or -CH-. For example, the components of the dust-proof material may include polyalphaolefin.

[0211] In some examples, the dustproof material may include multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. Alternatively, the dustproof material may be a mixture of multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. FTIR testing of the multiple different types of materials may reveal characteristic peaks of different functional groups within the different types of materials.

[0212] Illustratively, the dust-proof material may be composed of one or more of the following: fluorocarbon organic matter, fluoroether organic matter, organosiloxane or polyalphaolefin.

[0213] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and fluoroether organics can detect characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -COC-.

[0214] For example, when a dustproof material containing fluorocarbon organic matter and organopolysiloxane is subjected to FTIR testing, characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -Si-O- can be detected.

[0215] For example, by performing FTIR testing on a dust-proof material comprising a fluoroether organic compound and an organopolysiloxane, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CF-, -CF2-, or -CF3 can be detected.

[0216] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and polyalphaolefins can detect characteristic peaks reflecting stretching vibrations of one or more of the functional groups -CF-, -CF2- or -CF3 and one or more of the functional groups -CH3, -CH2- or -CH-.

[0217] For example, when performing FTIR testing on a dustproof material containing a fluoroether organic compound and a poly-alpha-olefin, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CH3, -CH2-, or -CH- can be detected.

[0218] It should be noted that using FTIR to detect the components of dust-proof materials is only a test method for determining the components of dust-proof materials and should not be regarded as a limitation on the components of dust-proof materials. There are many other methods to determine the components of dust-proof materials, for example, through nuclear magnetic resonance testing, Raman spectroscopy testing, etc. This application does not impose any restrictions on this.

[0219] It should also be noted that the test results of FTIR are affected by many factors such as environmental factors, sample factors and operating methods. The errors introduced by these factors may cause deviations in the test results to a certain extent. In other words, the position of the characteristic peak of the above-mentioned dust-proof material component reflected in the FTIR test results is only an exemplary illustration. There may be a certain deviation between the position of the actual characteristic peak and the position of the characteristic peak provided in this application. The position of the characteristic peak in the above example should not be regarded as a limitation on this application. In some examples, the dust-proof material can be a material that is liquid at room temperature. The dust-proof material in a liquid state is convenient for coating on the impact surface of the camera module, which is beneficial to simplify the processing and production process of the camera module. For example, the storage modulus E of the dust-proof material at 25°C satisfies: E≤50kPa. For example, the E of the dust-proof material at 25°C can be 40kPa, 30kPa, 20kPa or 10kPa, etc.

[0220] In the actual manufacturing process, the liquid dust-proof material can be sprayed at multiple points on different areas of the impact surface according to the size of the impact surface, and then the fluid dust-proof material can be made to flow and coat the impact surface through vibration.

[0221] In some examples, the dustproof material has a certain degree of adhesion, allowing debris or dust in the camera module to adhere to the dustproof material. For example, the viscosity η of the dustproof material at 25°C satisfies: η ≥ 5000 mPa·s. For example, the viscosity η of the dustproof material at 25°C can be 10000 mPa·s, 15000 mPa·s, 20000 mPa·s, or 25000 mPa·s.

[0222] In order to improve the stability of the dust-proof material and improve the anti-shake performance and imaging quality stability during the use of the camera module, in some examples, the dust-proof material may have certain high temperature resistance or thermal stability.

[0223] For example, the mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%. For example, α can be 0.20%, 0.15%, 0.10%, or 0.05%.

[0224] In some examples, the dustproof material can be applicable to a relatively wide temperature range. For example, within the temperature range of -30°C to 120°C, the storage modulus E of the dustproof material can satisfy: E≤150kPa, and the viscosity η satisfies: η≥4000mPa·s.

[0225] In some examples, the second fixing member 240 may be provided with a cover structure 244 on the side facing the lens 230. The cover structure 244 may have a notch in the middle. If the second camera module 200 includes a filter 250, the filter 250 may be installed in the notch. In some examples, the portion of the cover structure 244 outside the notch area on the side facing the lens 230 may also be coated with the aforementioned dust-proof material. The second fixing member 240 and the filter 250 fixed in the notch may form a closed structure, allowing imaging light to be incident on the photosensitive element 270 through the filter 250. Since the dust-proof material can have a certain degree of adhesion, the dust-proof material can be coated on the side of the cover structure 244 facing the lens 230 except for the notch area. Dust, particles and debris from the external space of the second fixing member 240 can fall on and adhere to the dust-proof material to a certain extent. The probability of dust, particles and debris falling on the filter 250 and interfering with the propagation of imaging light is lower, which can improve the imaging quality of the second camera module 200 to a certain extent.

[0226] In some examples, the second plane in which the second movable part 260 moves can be perpendicular to the optical axis O2O2 of the lens 230. In the process of the second movable part 260 driving the lens 230 to move in the second plane, the position of the incident point of light on the lens 230 can change, thereby adjusting the position of the imaging light incident on the photosensitive element 270 to a certain extent, that is, realizing the anti-shake function of the second camera module 200.

[0227] Figure 8 is a third camera module 300 provided in an embodiment of the present application. The third camera module 300 may include a fixing seat 310, a bracket 320, a lens 330 and a photosensitive element 340. The bracket 320 may be used to fix the lens 330 and the photosensitive element 340 so that the lens 330 and the photosensitive element 340 are relatively fixed. Light from the object being photographed may pass through the lens 330 and be incident on the photosensitive element 340, thereby forming an image.

[0228] In some scenarios, the fixing base 310 may also be referred to as a pan / tilt fixing base.

[0229] The third camera module 300 may further include an aperture 350 , which may be disposed on a side of the lens 330 away from the photosensitive element 340 . The aperture 350 may be used to adjust the size of the light beam projected onto the lens 330 .

[0230] The third camera module 300 may further include a filter 360, which may be disposed between the lens 330 and the photosensitive element 340, and may be disposed near the photosensitive element 340. The filter 360 may filter out light of certain wavelengths or frequencies from the imaging light. For example, the filter 360 may be an infrared cutoff filter or a blue glass filter.

[0231] In some examples, the bracket 320 can be configured to move within a fourth plane (the yz plane in FIG. 8 ), and the fixing base 310 can be used to limit the travel of the bracket 320 within the fourth plane. For example, the outer periphery of the bracket 320 can be provided with a magnet or a coil structure, and the outer periphery of the fixing base 310 can be correspondingly provided with a magnet or a coil structure. By controlling the magnitude and direction of the current in the bracket 320 and / or the coil on the fixing base 310, the bracket 320 can be driven to move within the fourth plane.

[0232] For example, the fixing base 310 can be similar to a shell that is sleeved on the outside of the bracket 320, or in other words, the bracket 320 can be arranged inside the fixing base 310. There can be a certain distance between the bracket 320 and the fixing base 310 so that the bracket 320 can move inside the fixing base 310 and within the fourth plane.

[0233] Taking the movement of the bracket 320 in the fixing base 310 along the direction 801 in FIG. 8 as an example, the bracket 320 may approach or move away from the inner wall of the fixing base 310 along the direction 801 .

[0234] As the bracket 320 moves within the fourth plane, the outer wall of the bracket 320 may contact or collide with the inner wall of the mounting base 310. The collision between the two components may generate debris, which may be located in the path of the imaging light, thereby adversely affecting the imaging quality of the camera module.

[0235] In some examples, the outer wall of bracket 320 may be provided with one or more protruding stoppers. During the movement of bracket 320, these stoppers may contact or collide with the inner wall of fixing base 310. For example, referring to FIG8 , the outer wall of bracket 320 may be provided with a seventh stopper 322. The surface of seventh stopper 322 facing fixing base 310 may be considered as a thirteenth impact surface 323. In the event that bracket 320 collides with fixing base 310, thirteenth impact surface 323 of seventh stopper 322 may contact or collide with the inner wall of fixing base 310.

[0236] In some examples, one or more protruding stoppers may be provided on the inner wall of the fixing base 310. During the movement of the bracket 320, these stoppers may contact or collide with the outer wall of the bracket 320. For example, referring to FIG8 , the inner wall of the fixing base 310 may be provided with an eighth stopper 312. The surface of the eighth stopper 312 facing the bracket 320 may be considered a fourteenth impact surface 313. When the bracket 320 collides with the fixing base 310, the fourteenth impact surface 313 of the eighth stopper 312 may contact or collide with the outer wall of the bracket 320.

[0237] In some examples, the outer wall of the bracket 320 may not be provided with the seventh stopper 322 described above. In other words, when the bracket 320 contacts or collides with the fixing base 310, a continuous area on the outer wall of the bracket 320 contacts or collides with the inner wall of the fixing base 310, rather than the impact surface of the stopper on the outer wall of the bracket 320 contacting or colliding with the inner wall of the fixing base 310. In other words, the outer wall of the bracket 320 may be provided with a first impact surface 131 in the first camera module 100. For example, referring to Figure 8, the bracket 320 may be provided with a fifteenth impact surface 321. When the bracket 320 collides with the fixing base 310, the fifteenth impact surface 321 may contact or collide with the inner wall of the fixing base 310.

[0238] In some examples, the inner wall of the fixing base 310 may not be provided with the eighth stopper 312 described above. In other words, when the bracket 320 contacts or collides with the fixing base 310, a continuous area on the inner wall of the fixing base 310 contacts or collides with the outer wall of the bracket 320, rather than the impact surface of the stopper on the inner wall of the fixing base 310 contacting or colliding with the outer wall of the bracket 320. In other words, the inner wall of the fixing base 310 may be provided with a second impact surface 121 in the first camera module 100. For example, referring to FIG8 , the fixing base 310 may be provided with a sixteenth impact surface 311, which collides with the outer wall of the bracket 320 when the bracket 320 collides with the fixing base 310.

[0239] In some examples, the thirteenth impact surface 323 may correspond to the fourteenth impact surface 313. In other words, when the bracket 320 collides with the fixing base 310, the thirteenth impact surface 323 may collide with the fourteenth impact surface 313. In this case, the surface shape of the thirteenth impact surface 323 may match the surface shape of the fourteenth impact surface 313. For example, the thirteenth impact surface 323 and the fourteenth impact surface 313 may both be flat. For another example, the thirteenth impact surface 323 may be concave, and the fourteenth impact surface 313 may be convex to match the concave shape. For another example, the thirteenth impact surface 323 may be convex, and the fourteenth impact surface 313 may be concave to match the convex shape.

[0240] In some examples, the thirteenth impact surface 323 may correspond to the sixteenth impact surface 311. In other words, when the bracket 320 collides with the fixing base 310, the thirteenth impact surface 323 may collide with the sixteenth impact surface 311. In this case, the surface shape of the thirteenth impact surface 323 may match the surface shape of the sixteenth impact surface 311. For example, the thirteenth impact surface 323 and the sixteenth impact surface 311 may both be flat. For another example, the thirteenth impact surface 323 may be concave, and the sixteenth impact surface 311 may be convex to match the concave shape. For another example, the thirteenth impact surface 323 may be convex, and the sixteenth impact surface 311 may be concave to match the convex shape.

[0241] In some examples, the fifteenth impact surface 321 may correspond to the sixth impact surface. In other words, when the bracket 320 collides with the fixing base 310, the fifteenth impact surface 321 may collide with the sixth impact surface. In this case, the surface shape of the fifteenth impact surface 321 may match the surface shape of the sixth impact surface. For example, the fifteenth impact surface 321 and the sixth impact surface may both be flat. For another example, the fifteenth impact surface 321 may be concave, and the fifteenth impact surface 321 may be a convex surface that matches the concave surface shape. For another example, the fifteenth impact surface 321 may be a convex surface, and the sixth impact surface may be a concave surface that matches the convex surface shape.

[0242] In some examples, the fifteenth impact surface 321 may correspond to the sixteenth impact surface 311. In other words, when the bracket 320 collides with the fixing base 310, the fifteenth impact surface 321 may collide with the eighth impact surface. In this case, the surface shape of the fifteenth impact surface 321 may match the surface shape of the sixteenth impact surface 311. For example, the fifteenth impact surface 321 and the sixteenth impact surface 311 may both be flat. For another example, the fifteenth impact surface 321 may be concave, and the sixteenth impact surface 311 may be convex to match the concave shape. For another example, the fifteenth impact surface 321 may be convex, and the sixteenth impact surface 311 may be concave to match the convex shape.

[0243] This application does not limit the size, number, shape, distribution or relationship of the impact surfaces where the bracket 320 and the fixing seat 310 contact or collide with each other. The above descriptions of the thirteenth impact surface 323, the fifteenth impact surface 321, etc. are merely exemplary and should not be understood as limitations on this application.

[0244] In order to reduce the probability of dust generation due to the collision between the bracket 320 and the fixing base 310 , in some examples, a certain amount of dust-proof material can be coated on the collision surface of the bracket 320 and / or the fixing base 310 .

[0245] Exemplarily, the dustproof material may be coated on the fifteenth impact surface 321 , or the dustproof material may be coated on the sixteenth impact surface 311 , or the dustproof material may be coated on both the fifteenth impact surface 321 and the sixteenth impact surface 311 .

[0246] For example, the dustproof material may be coated on the aforementioned thirteenth impact surface 323 , or the dustproof material may also be coated on the aforementioned fourteenth impact surface 313 , or the dustproof material may be coated on both the thirteenth impact surface 323 and the fourteenth impact surface 313 .

[0247] Dustproof materials can be one or more of the following: oils, lipids, or soft rubbers. Oils can include mineral oils, synthetic oils, animal or plant oils, or water-based liquids. Lipids can include soap-based lipids, hydrocarbon-based lipids, inorganic lipids, or organic lipids. Soft rubbers can include silicone, thermoplastic elastomers, thermoplastic polyurethane elastomer rubber, polyvinyl chloride, or rubber.

[0248] The dustproof material can be composed of materials with good high temperature resistance, low temperature stability, oxidation resistance, hydrophobicity and electrical insulation, etc.

[0249] In some examples, the dust-proof material may include one or more of the following materials: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. In other words, the dust-proof material may include only one of fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds, or the dust-proof material may include two or three of the following: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds.

[0250] In the case where the dustproof material includes multiple types of the above three types of organic matter, this application does not limit the component content of different types of organic matter in the dustproof material.

[0251] In some examples, the main components of the dust-proof material may include one or more functional groups: -CF-, -CF2-, or -CF3.

[0252] For example, the dustproof material containing the above functional groups may be composed of one or more of the following: one or more of fluorocarbons, fluoroethers, fluoroalcohols, fluoroketones, or fluorocarboxylic acids. For example, the dustproof material may include fluoro oil and / or fluoro resin.

[0253] In some scenarios, fluorocarbons may also be referred to as fluorocarbon organics. For example, fluorocarbons may be fluoroalkanes, fluoroalkenes, or fluoroalkynes, such as carbon tetrafluoride, tetrafluoroethylene, or hexafluoropropylene.

[0254] In some scenarios, fluoroether may also be referred to as fluoroether organic matter. For example, fluoroether may be perfluoroethyl ether, difluoroethyl ether, or trifluoroethyl ether.

[0255] For example, the fluoroalcohol may be perfluoromethanol, perfluoroethanol, or perfluoropropanol, etc. The fluoroketone may be perfluoroacetone, difluorohexanone, or trifluoromethylketone, etc. The fluorocarboxylic acid may be difluoroacetic acid, trifluoromethylpropionic acid, or heptafluorodecanoic acid, etc.

[0256] For example, the present application can determine the functional groups and chemical bonds of the components of the dustproof material by Fourier transform infrared spectroscopy (FTIR) testing. FTIR can analyze the types of chemical functional groups and chemical bonds contained in the compound molecules contained in the sample by testing the absorption characteristics of the sample for infrared light. In the FTIR spectrum, the horizontal axis usually represents the wave number (cm -1 ), which represents the frequency of infrared radiation. The vertical axis represents transmittance, absorbance, or reflectance, etc., reflecting the degree of absorption of infrared light of a specific wavelength by the sample under test.

[0257] For example, the dustproof material is subjected to FTIR testing. If the wave number is 1240 cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there is a functional group -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be said that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it can be said that there is a functional group -CF3 in the components of the dust-proof material.

[0258] The above FTIR test results can also show that the components of the dustproof material include carbon and fluorine elements. According to the FTIR test results, it can be determined that the components of the dustproof material may be fluorocarbon organic matter, for example, the components of the dustproof material may be polytetrafluoroethylene (C2F4)n, etc.

[0259] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0260] For example, the dustproof material is subjected to FTIR testing. If the wave number is 990 cm -1 If an absorption peak can be detected near the wave number 1240cm, and the absorption peak is sharp and strong, it can be said that there is a functional group -COC- in the components of the dustproof material. In addition, if the FTIR test result is at the wave number 1240cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there are functional groups -CF- in the components of the dustproof material. -1If an absorption peak can be detected near the wave number 1306cm, it can be shown that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it means that the functional group -CF3 still exists in the components of the dust-proof material.

[0261] The above FTIR test results can also show that the components of the dustproof material contain carbon, fluorine and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material can be fluoroether organic matter (fluoroether). For example, the components of the dustproof material can be perfluoropolyether (CF3O[-CF(CF3)CF2O-] x (-CF2O-)yCF3), perfluoroethyl ether or difluoroethyl ether, etc.

[0262] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0263] In some examples, the main component of the dust-proof material may include the functional group -Si-O-. The main component of the dust-proof material may further include one or more of the following functional groups: -CH3, -CH2-, or -CH-.

[0264] Illustratively, the component of the dust-proof material containing the above functional groups may be a silicon-containing organic matter. Illustratively, the silicon-containing organic matter may be one or more of the following: silane, silanol or organosiloxane.

[0265] For example, the silane may be methylsilane or dimethylsilane, and the silanol may be trimethylsilanol or triethoxysilanol.

[0266] For example, the organosiloxane may be dimethylsiloxane, polydimethylsiloxane (C2H6OSi)n, vinylsiloxane, silicone resin, or the like.

[0267] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0268] Perform FTIR test on dustproof materials. If the wave number is 1092cm -1 If an absorption peak can be detected near the wave number 3000cm, it can be said that the dustproof material contains -Si-O- chemical bonds. -1 to 2840cm -1 If an absorption peak can be detected within the range of , it can be explained that the components of the dust-proof material also contain one or more of the following functional groups: -CH3, -CH2- or -CH-.

[0269] The above FTIR test results can also indicate that the components of the dustproof material include carbon, silicon and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material may include organic siloxane, for example, the components of the dustproof material may include polyorganosiloxane or silicone resin.

[0270] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -Si-C-, etc., and this application does not impose any limitation on this.

[0271] In some examples, the main component of the dust-proof material may include only one or more of the functional groups -CH3, -CH2-, or -CH-.

[0272] Illustratively, the dust-proof material may mainly contain hydrocarbon organic matter, and the hydrocarbon organic matter may be one or more of alkanes, olefins, aromatic hydrocarbons, and the like.

[0273] For example, the alkane may include a linear alkane, a cycloalkane, etc., for example, a linear alkane or a cycloalkane having 15 to 40 carbon atoms in the molecule. The aromatic hydrocarbon may include a low molecular weight polycyclic aromatic hydrocarbon, etc.

[0274] For example, the olefin may include polyalphaolefins (PAO). Here, polyalphaolefin refers to an organic compound obtained from alpha olefins through polymerization, etc., wherein alpha olefin refers to a type of monoolefin having a double bond located at the end of the molecular chain (i.e., the first carbon atom), common examples of which include ethylene, propylene, 1-butene, 1-hexene, etc.

[0275] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0276] Perform FTIR testing on dustproof materials. If the wave number is 2960cm -1 Nearby, 2870cm -1 Nearby and 1380cm -1 If an absorption peak is detected near the wave number 2930cm -1 Nearby and 2850cm -1 If an absorption peak can be detected near the wave number 1460cm, it can be determined that the dustproof material may contain a functional group -CH2-. -1 If an absorption peak can be detected near the wave number 722cm, it can be determined that the components of the dustproof material may contain alkyl groups. -1 If an absorption peak is detected near , it can be determined that the components of the dust-proof material may contain alkanes with multiple carbon numbers.

[0277] The above FTIR test results can also indicate that the components of the dust-proof material contain carbon and hydrogen elements. According to the FTIR test results, it can be determined that the components of the dust-proof material may contain one or more functional groups -CH3, -CH2- or -CH-. For example, the components of the dust-proof material may include polyalphaolefin.

[0278] In some examples, the dustproof material may include multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. Alternatively, the dustproof material may be a mixture of multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. FTIR testing of the multiple different types of materials may reveal characteristic peaks of different functional groups within the different types of materials.

[0279] Illustratively, the dust-proof material may be composed of one or more of the following: fluorocarbon organic matter, fluoroether organic matter, organosiloxane or polyalphaolefin.

[0280] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and fluoroether organics can detect characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -COC-.

[0281] For example, when a dustproof material containing fluorocarbon organic matter and organopolysiloxane is subjected to FTIR testing, characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -Si-O- can be detected.

[0282] For example, by performing FTIR testing on a dust-proof material comprising a fluoroether organic compound and an organopolysiloxane, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CF-, -CF2-, or -CF3 can be detected.

[0283] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and polyalphaolefins can detect characteristic peaks reflecting stretching vibrations of one or more of the functional groups -CF-, -CF2- or -CF3 and one or more of the functional groups -CH3, -CH2- or -CH-.

[0284] For example, when performing FTIR testing on a dustproof material containing a fluoroether organic compound and a poly-alpha-olefin, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CH3, -CH2-, or -CH- can be detected.

[0285] It should be noted that using FTIR to detect the components of dust-proof materials is only a test method for determining the components of dust-proof materials and should not be regarded as a limitation on the components of dust-proof materials. There are many other methods to determine the components of dust-proof materials, for example, through nuclear magnetic resonance testing, Raman spectroscopy testing, etc. This application does not impose any restrictions on this.

[0286] It should also be noted that the test results of FTIR are affected by many factors such as environmental factors, sample factors and operating methods. The errors introduced by these factors may cause deviations in the test results to a certain extent. In other words, the position of the characteristic peak of the above-mentioned dust-proof material component reflected in the FTIR test results is only an exemplary illustration. There may be a certain deviation between the position of the actual characteristic peak and the position of the characteristic peak provided in this application. The position of the characteristic peak in the above example should not be regarded as a limitation on this application. In some examples, the dust-proof material can be a material that is liquid at room temperature. The dust-proof material in a liquid state is convenient for coating on the impact surface of the camera module, which is beneficial to simplify the processing and production process of the camera module. For example, the storage modulus E of the dust-proof material at 25°C satisfies: E≤50kPa. For example, the E of the dust-proof material at 25°C can be 40kPa, 30kPa, 20kPa or 10kPa, etc.

[0287] In the actual manufacturing process, the liquid dust-proof material can be sprayed at multiple points on different areas of the impact surface according to the size of the impact surface, and then the fluid dust-proof material can be made to flow and coat the impact surface through vibration.

[0288] In some examples, the dustproof material has a certain degree of adhesion, allowing debris or dust in the camera module to adhere to the dustproof material. For example, the viscosity η of the dustproof material at 25°C satisfies: η ≥ 5000 mPa·s. For example, the viscosity η of the dustproof material at 25°C can be 10000 mPa·s, 15000 mPa·s, 20000 mPa·s, or 25000 mPa·s.

[0289] In order to improve the stability of the dust-proof material and improve the anti-shake performance and imaging quality stability during the use of the camera module, in some examples, the dust-proof material may have certain high temperature resistance or thermal stability.

[0290] For example, the mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%. For example, α can be 0.20%, 0.15%, 0.10%, or 0.05%.

[0291] In some examples, the dustproof material can be applicable to a relatively wide temperature range. For example, within the temperature range of -30°C to 120°C, the storage modulus E of the dustproof material can satisfy: E≤150kPa, and the viscosity η satisfies: η≥4000mPa·s.

[0292] In some examples, the third plane in which the bracket 320 moves can be perpendicular to the optical axis O4O4 of the lens 230. In the process of the bracket 320 driving the lens 330 to move in the fourth plane, the position of the incident point of the light on the lens 330 can change, thereby adjusting the position of the imaging light incident on the photosensitive element 340 to a certain extent, that is, realizing the anti-shake function of the third camera module 300.

[0293] Figure 9 shows the fourth camera module 400 provided in an embodiment of the present application. The fourth camera module 400 may include a third fixed part 420, a third movable part 430, a lens 440 and a photosensitive element 460. Light from the object being photographed can be incident on the photosensitive element 460 after passing through the lens 440, thereby forming an image.

[0294] The fourth camera module 400 may further include an aperture 410 , which may be disposed on a side of the lens 440 away from the photosensitive element 460 . The aperture 410 may be used to adjust the size of the light beam projected onto the lens 440 .

[0295] The fourth camera module 400 may further include a filter 450, which may be disposed between the lens 440 and the photosensitive element 460, and may be disposed near the photosensitive element 460. The filter 450 may filter out light of certain wavelengths or frequencies from the imaging light. For example, the filter 450 may be an infrared cutoff filter or a blue glass filter.

[0296] In some examples, the third movable member 430 can be used to secure the lens 440. For example, the third movable member 430 can be a cylindrical structure with openings at both ends. FIG. 9 illustrates a cross-section of the cylindrical third movable member 430 passing through the optical axis of the lens. The inner wall of the third movable member 430 can be provided with grooves for retaining the lens 440. The lens 440 can be mounted on the third movable member 430 via these grooves, thereby securing the lens 440 relative to the third movable member 430. The number of lenses 440 can be one or more, and this application does not impose any limitation thereto.

[0297] The third movable member 430 can move along the first direction (the x-axis direction in FIG. 9 ). In some examples, the third fixing member 420 can be used to limit the movement range of the third movable member 430 along the first direction.

[0298] In some examples, the third fixed member 420 may be similar to a housing structure with holes at both ends, and the third movable member 430 may be disposed inside the third fixed member 420, or in other words, the third fixed member 420 may be sleeved outside the third movable member 430. A certain distance may be provided between the third movable member 430 and the third fixed member 420 so that the third movable member 430 can move in the first direction within the interior space of the third fixed member 420.

[0299] When the third movable member 430 moves along the first direction on the third fixed member 420, the third movable member 430 may collide with the third fixed member 420. The collision between the two structural members may generate certain debris, which may be located in the propagation path of the imaging light, thereby potentially adversely affecting the imaging quality of the camera module.

[0300] In some examples, one or more protruding stoppers may be provided on the outer wall of the third movable member 430. During the movement of the third movable member 430, these stoppers may contact or collide with the inner wall of the third fixed member 420. For example, referring to FIG9 , the outer wall of the third movable member 430 may be provided with a fifth stopper 432. The surface of the fifth stopper 432 facing the third fixed member 420 may be considered a ninth impact surface 433. When the third movable member 430 collides with the third fixed member 420, the ninth impact surface 433 of the fifth stopper 432 contacts or collides with the inner wall of the third fixed member 420.

[0301] In some examples, one or more protruding stoppers may be provided on the inner wall of the third fixed member 420. During the movement of the third movable member 430, these stoppers may contact or collide with the outer wall of the third movable member 430. For example, referring to FIG9 , the inner wall of the third fixed member 420 may be provided with a sixth stopper 422. The surface of the sixth stopper 422 facing the third movable member 430 may be considered a tenth impact surface 423. When the third movable member 430 collides with the third fixed member 420, the tenth impact surface 423 of the sixth stopper 422 contacts or collides with the outer wall of the third movable member 430.

[0302] In some examples, the outer wall of the third movable member 430 may not be provided with the fifth stopper 432 described above. In other words, when the third movable member 430 contacts or collides with the third fixed member 420, a continuous area on the outer wall of the third movable member 430 contacts or collides with the inner wall of the third fixed member 420, rather than the impact surface of the stopper on the outer wall of the third movable member 430 contacting or colliding with the inner wall of the third fixed member 420. In other words, the outer wall of the third movable member 430 may be provided with a first impact surface 131 similar to that in the first camera module 100. For example, referring to FIG. 9 , the third movable member 430 may be provided with an eleventh impact surface 431, which collides with the inner wall of the third fixed member 420 when the third movable member 430 collides with the third fixed member 420.

[0303] In some examples, the inner wall of the third fixing member 420 may not be provided with the sixth stopper 422 described above. In other words, when the third movable member 430 contacts or collides with the third fixing member 420, a continuous area on the inner wall of the third fixing member 420 contacts or collides with the outer wall of the third movable member 430, rather than the impact surface of the stopper on the inner wall of the third fixing member 420 contacting or colliding with the outer wall of the third movable member 430. In other words, the inner wall of the third fixing member 420 may be provided with a second impact surface 131 as in the first camera module 100. For example, referring to FIG. 9 , the third fixing member 420 may be provided with a twelfth impact surface 421, which collides with the outer wall of the third movable member 430 when the third movable member 430 collides with the third fixing member 420.

[0304] In some examples, the ninth impact surface 433 may correspond to the tenth impact surface 423. In other words, when the third movable member 430 collides with the third fixed member 420, the ninth impact surface 433 may collide with the tenth impact surface 423. In this case, the surface shape of the ninth impact surface 433 may match the surface shape of the tenth impact surface 423. For example, both the ninth impact surface 433 and the tenth impact surface 423 may be planar. For another example, the ninth impact surface 433 may be concave, and the tenth impact surface 423 may be convex to match the concave shape. For another example, the ninth impact surface 433 may be convex, and the tenth impact surface 423 may be concave to match the convex shape.

[0305] In some examples, the ninth impact surface 333 may correspond to the twelfth impact surface 421. In other words, when the third movable member 430 collides with the third fixed member 420, the ninth impact surface 433 may collide with the twelfth impact surface 421. In this case, the surface shape of the ninth impact surface 433 may match the surface shape of the twelfth impact surface 421. For example, the ninth impact surface 333 and the twelfth impact surface 421 may both be flat. For another example, the ninth impact surface 433 may be concave, and the twelfth impact surface 421 may be convex to match the concave shape. For another example, the ninth impact surface 333 may be convex, and the twelfth impact surface 421 may be concave to match the convex shape.

[0306] In some examples, the eleventh impact surface 431 may correspond to the sixth impact surface. In other words, when the third movable member 430 collides with the third fixed member 420, the eleventh impact surface 431 may collide with the sixth impact surface. In this case, the surface shape of the eleventh impact surface 431 may match the surface shape of the sixth impact surface. For example, both the eleventh impact surface 431 and the sixth impact surface may be flat. In another example, the eleventh impact surface 431 may be concave, and the eleventh impact surface 431 may be convex to match the concave shape. In another example, the eleventh impact surface 431 may be convex, and the sixth impact surface may be concave to match the convex shape.

[0307] In some examples, the eleventh impact surface 431 may correspond to the twelfth impact surface 421. In other words, when the third movable member 430 collides with the third fixed member 420, the eleventh impact surface 431 may collide with the eighth impact surface. In this case, the surface shape of the eleventh impact surface 431 may match the surface shape of the twelfth impact surface 421. For example, both the eleventh impact surface 431 and the twelfth impact surface 421 may be flat. For another example, the eleventh impact surface 431 may be concave, and the twelfth impact surface 421 may be convex to match the concave shape. For another example, the eleventh impact surface 431 may be convex, and the twelfth impact surface 421 may be concave to match the convex shape.

[0308] This application does not limit the size, number, shape, distribution or relationship of the impact surfaces where the third movable part 430 and the third fixed part 420 contact or collide with each other. The above descriptions of the ninth impact surface 433, the tenth impact surface 423, etc. are merely exemplary and should not be understood as limitations on this application.

[0309] To reduce the probability of dust generation due to the collision between the third movable member 430 and the third fixed member 420 , in some examples, a certain amount of dust-proof material may be coated on the collision surface of the third movable member 430 and / or the third fixed member 420 .

[0310] For example, the dustproof material may be coated on the ninth impact surface 433 , or the dustproof material may be coated on the tenth impact surface 423 , or the dustproof material may be coated on both the ninth impact surface 433 and the tenth impact surface 423 .

[0311] Illustratively, the dustproof material may be coated on the aforementioned eleventh impact surface 431 , or the dustproof material may also be coated on the aforementioned twelfth impact surface 421 , or the dustproof material may be coated on both the eleventh impact surface 431 and the twelfth impact surface 421 .

[0312] Dustproof materials can be one or more of the following: oils, lipids, or soft rubbers. Oils can include mineral oils, synthetic oils, animal or plant oils, or water-based liquids. Lipids can include soap-based lipids, hydrocarbon-based lipids, inorganic lipids, or organic lipids. Soft rubbers can include silicone, thermoplastic elastomers, thermoplastic polyurethane elastomer rubber, polyvinyl chloride, or rubber.

[0313] The dustproof material can be composed of materials with good high temperature resistance, low temperature stability, oxidation resistance, hydrophobicity and electrical insulation, etc.

[0314] In some examples, the dust-proof material may include one or more of the following materials: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. In other words, the dust-proof material may include only one of fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds, or the dust-proof material may include two or three of the following: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds.

[0315] In the case where the dustproof material includes multiple types of the above three types of organic matter, this application does not limit the component content of different types of organic matter in the dustproof material.

[0316] In some examples, the main components of the dust-proof material may include one or more functional groups: -CF-, -CF2-, or -CF3.

[0317] For example, the dustproof material containing the above functional groups may be composed of one or more of the following: fluorocarbons, fluoroethers, fluoroalcohols, fluoroketones, or fluorocarboxylic acids. For example, the dustproof material may include fluoro oil and / or fluoro resin.

[0318] In some scenarios, fluorocarbons may also be referred to as fluorocarbon organics. For example, fluorocarbons may be fluoroalkanes, fluoroalkenes, or fluoroalkynes, such as carbon tetrafluoride, tetrafluoroethylene, or hexafluoropropylene.

[0319] In some scenarios, fluoroether may also be referred to as fluoroether organic matter. For example, fluoroether may be perfluoroethyl ether, difluoroethyl ether, or trifluoroethyl ether.

[0320] For example, the fluoroalcohol may be perfluoromethanol, perfluoroethanol, or perfluoropropanol, etc. The fluoroketone may be perfluoroacetone, difluorohexanone, or trifluoromethylketone, etc. The fluorocarboxylic acid may be difluoroacetic acid, trifluoromethylpropionic acid, or heptafluorodecanoic acid, etc.

[0321] For example, the present application can determine the functional groups and chemical bonds of the components of the dustproof material by Fourier transform infrared spectroscopy (FTIR) testing. FTIR can analyze the types of chemical functional groups and chemical bonds contained in the compound molecules contained in the sample by testing the absorption characteristics of the sample for infrared light. In the FTIR spectrum, the horizontal axis usually represents the wave number (cm -1 ), which represents the frequency of infrared radiation. The vertical axis represents transmittance, absorbance, or reflectance, etc., reflecting the degree of absorption of infrared light of a specific wavelength by the sample under test.

[0322] For example, the dustproof material is subjected to FTIR testing. If the wave number is 1240 cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there is a functional group -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be said that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it can be said that there is a functional group -CF3 in the components of the dust-proof material.

[0323] The above FTIR test results can also show that the components of the dustproof material include carbon and fluorine elements. According to the FTIR test results, it can be determined that the components of the dustproof material may be fluorocarbon organic matter, for example, the components of the dustproof material may be polytetrafluoroethylene (C2F4)n, etc.

[0324] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0325] For example, the dustproof material is subjected to FTIR testing. If the wave number is 990 cm -1 If an absorption peak can be detected near the wave number 1240cm, and the absorption peak is sharp and strong, it can be said that there is a functional group -COC- in the components of the dustproof material. In addition, if the FTIR test result is at the wave number 1240cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there are functional groups -CF- in the components of the dustproof material. -1If an absorption peak can be detected near the wave number 1306cm, it can be shown that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it means that the functional group -CF3 still exists in the components of the dust-proof material.

[0326] The above FTIR test results can also show that the components of the dustproof material contain carbon, fluorine and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material can be fluoroether organic matter (fluoroether). For example, the components of the dustproof material can be perfluoropolyether (CF3O[-CF(CF3)CF2O-] x (-CF2O-)yCF3), perfluoroethyl ether or difluoroethyl ether, etc.

[0327] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0328] In some examples, the main component of the dust-proof material may include the functional group -Si-O-. The main component of the dust-proof material may further include one or more of the following functional groups: -CH3, -CH2-, or -CH-.

[0329] Illustratively, the component of the dust-proof material containing the above functional groups may be a silicon-containing organic matter. Illustratively, the silicon-containing organic matter may be one or more of the following: silane, silanol or organosiloxane.

[0330] For example, the silane may be methylsilane or dimethylsilane, and the silanol may be trimethylsilanol or triethoxysilanol.

[0331] For example, the organosiloxane may be dimethylsiloxane, polydimethylsiloxane (C2H6OSi)n, vinylsiloxane, silicone resin, or the like.

[0332] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0333] Perform FTIR test on dustproof materials. If the wave number is 1092cm -1 If an absorption peak can be detected near the wave number 3000cm, it can be said that the dustproof material contains -Si-O- chemical bonds. -1 to 2840cm -1 If an absorption peak can be detected within the range of , it can be explained that the components of the dust-proof material also contain one or more of the following functional groups: -CH3, -CH2- or -CH-.

[0334] The above FTIR test results can also indicate that the components of the dustproof material include carbon, silicon and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material may include organic siloxane, for example, the components of the dustproof material may include polyorganosiloxane or silicone resin.

[0335] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -Si-C-, etc., and this application does not impose any limitation on this.

[0336] In some examples, the main component of the dust-proof material may include only one or more of the functional groups -CH3, -CH2-, or -CH-.

[0337] Illustratively, the dust-proof material may mainly contain hydrocarbon organic matter, and the hydrocarbon organic matter may be one or more of alkanes, olefins, aromatic hydrocarbons, and the like.

[0338] For example, the alkane may include a linear alkane, a cycloalkane, etc., for example, a linear alkane or a cycloalkane having 15 to 40 carbon atoms in the molecule. The aromatic hydrocarbon may include a low molecular weight polycyclic aromatic hydrocarbon, etc.

[0339] For example, the olefin may include polyalphaolefins (PAO). Here, polyalphaolefin refers to an organic compound obtained from alpha olefins through polymerization, etc., wherein alpha olefin refers to a type of monoolefin having a double bond located at the end of the molecular chain (i.e., the first carbon atom), common examples of which include ethylene, propylene, 1-butene, 1-hexene, etc.

[0340] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0341] Perform FTIR testing on dustproof materials. If the wave number is 2960cm -1 Nearby, 2870cm -1 Nearby and 1380cm -1 If an absorption peak is detected near the wave number 2930cm -1 Nearby and 2850cm -1 If an absorption peak can be detected near the wave number 1460cm, it can be determined that the dustproof material may contain a functional group -CH2-. -1 If an absorption peak can be detected near the wave number 722cm, it can be determined that the components of the dustproof material may contain alkyl groups. -1 If an absorption peak is detected near , it can be determined that the components of the dust-proof material may contain alkanes with multiple carbon numbers.

[0342] The above FTIR test results can also indicate that the components of the dust-proof material contain carbon and hydrogen elements. According to the FTIR test results, it can be determined that the components of the dust-proof material may contain one or more functional groups -CH3, -CH2- or -CH-. For example, the components of the dust-proof material may include polyalphaolefin.

[0343] In some examples, the dustproof material may include multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. Alternatively, the dustproof material may be a mixture of multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. FTIR testing of the multiple different types of materials may reveal characteristic peaks of different functional groups within the different types of materials.

[0344] Illustratively, the dust-proof material may be composed of one or more of the following: fluorocarbon organic matter, fluoroether organic matter, organosiloxane or polyalphaolefin.

[0345] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and fluoroether organics can detect characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -COC-.

[0346] For example, when a dustproof material containing fluorocarbon organic matter and organopolysiloxane is subjected to FTIR testing, characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -Si-O- can be detected.

[0347] For example, by performing FTIR testing on a dust-proof material comprising a fluoroether organic compound and an organopolysiloxane, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CF-, -CF2-, or -CF3 can be detected.

[0348] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and polyalphaolefins can detect characteristic peaks reflecting stretching vibrations of one or more of the functional groups -CF-, -CF2- or -CF3 and one or more of the functional groups -CH3, -CH2- or -CH-.

[0349] For example, when performing FTIR testing on a dustproof material containing a fluoroether organic compound and a poly-alpha-olefin, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CH3, -CH2-, or -CH- can be detected.

[0350] It should be noted that using FTIR to detect the components of dust-proof materials is only a test method for determining the components of dust-proof materials and should not be regarded as a limitation on the components of dust-proof materials. There are many other methods to determine the components of dust-proof materials, for example, through nuclear magnetic resonance testing, Raman spectroscopy testing, etc. This application does not impose any restrictions on this.

[0351] It should also be noted that the test results of FTIR are affected by many factors such as environmental factors, sample factors and operating methods. The errors introduced by these factors may cause deviations in the test results to a certain extent. In other words, the position of the characteristic peak of the above-mentioned dust-proof material component reflected in the FTIR test results is only an exemplary illustration. There may be a certain deviation between the position of the actual characteristic peak and the position of the characteristic peak provided in this application. The position of the characteristic peak in the above example should not be regarded as a limitation on this application. In some examples, the dust-proof material can be a material that is liquid at room temperature. The dust-proof material in a liquid state is convenient for coating on the impact surface of the camera module, which is beneficial to simplify the processing and production process of the camera module. For example, the storage modulus E of the dust-proof material at 25°C satisfies: E≤50kPa. For example, the E of the dust-proof material at 25°C can be 40kPa, 30kPa, 20kPa or 10kPa, etc.

[0352] In the actual manufacturing process, the liquid dust-proof material can be sprayed at multiple points on different areas of the impact surface according to the size of the impact surface, and then the fluid dust-proof material can be made to flow and coat the impact surface through vibration.

[0353] In some examples, the dustproof material has a certain degree of adhesion, allowing debris or dust in the camera module to adhere to the dustproof material. For example, the viscosity η of the dustproof material at 25°C satisfies: η ≥ 5000 mPa·s. For example, the viscosity η of the dustproof material at 25°C can be 10000 mPa·s, 15000 mPa·s, 20000 mPa·s, or 25000 mPa·s.

[0354] In order to improve the stability of the dust-proof material and improve the stability of the focusing, focusing performance and imaging quality during the use of the camera module, in some examples, the dust-proof material can have certain high temperature resistance or thermal stability.

[0355] For example, the mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%. For example, α can be 0.20%, 0.15%, 0.10%, or 0.05%.

[0356] In some examples, the dustproof material can be applicable to a relatively wide temperature range. For example, within the temperature range of -30°C to 120°C, the storage modulus E of the dustproof material can satisfy: E≤150kPa, and the viscosity η satisfies: η≥4000mPa·s.

[0357] In some examples, the first direction of movement of the third movable part 430 can be parallel to the optical axis O3O3 of the lens 440. In the process of the third movable part 430 driving the lens 440 to move along the first direction, the distance between the lens 440 and the photosensitive element 460, and the distance between the lens 440 and the photographed object can change, thereby adjusting the image distance and object distance of the camera module to a certain extent, that is, realizing the automatic focus and focusing functions of the fourth camera module 400.

[0358] In some examples, the fourth camera module 400 may further include a container, which may be used to accommodate the aforementioned photosensitive element 460 , and the end surface of the container close to the lens 440 may also be coated with a dust-proof material.

[0359] Figures 10 and 11 are schematic diagrams of the structure of the fifth lens module 500 provided in an embodiment of the present application. The fifth camera module 500 may include a lens cover 510, a lens holder 520, a lens (not shown in the figure), a lens mount 530, and a photosensitive element (not shown in the figure). The lens mount 530 can be used to accommodate the lens holder 520 and the photosensitive element, the lens holder 520 can be used to fix the lens, and the lens cover 510 can cover the outside of the lens holder 530. Light from the object being photographed can pass through the lens and be incident on the photosensitive element, thereby forming an image.

[0360] 10 , the lens frame 520 may include a main body 522 and a stopper 540. The stopper 540 may be disposed around the outer circumference of the main body 522. The main body 522 may be used to accommodate the lenses of the fifth lens module 500.

[0361] In some examples, the periphery of the lens holder 520 may be provided with four stops, for example, stopper 540A, stopper 540B, stopper 540C, and stopper 540D. Stopper 540A is positioned adjacent to stopper 540B and stopper 540D, and is positioned diagonally opposite stopper 540C. These four stops can be understood as four independent island-shaped block structures extending from the main structure of the lens holder 520 toward the periphery.

[0362] In some examples, the two end surfaces of the four aforementioned stops, which are positioned opposite each other along the z-axis, are located outside the two end surfaces of the main body 522 of the lens holder 520, which are positioned opposite each other along the z-axis. For example, stopper 540A may include end surfaces 541A and 541B, which are positioned opposite each other along the z-axis; stopper 540B may include end surfaces 542A and 542B, which are positioned opposite each other along the z-axis; stopper 540C may include end surfaces 543A and 543B, which are positioned opposite each other along the z-axis; and stopper 540D may include end surfaces 544A and 544B, which are positioned opposite each other along the z-axis. In particular, end surfaces 541A, 542A, 543A, and 544A are positioned above end surfaces 541B, 542B, 543B, and 544B. In other words, end surface 541A, end surface 542A, end surface 543A, and end surface 544A may be disposed close to lens cover 510, and end surface 541B, end surface 542B, end surface 543B, and end surface 544B may be disposed close to lens mount 530. In one possible scenario, end surface 541A, end surface 542A, end surface 543A, and end surface 544A may be in the same plane, and end surface 541B, end surface 542B, end surface 543B, and end surface 544B may be in the same plane.

[0363] Stopper 540A may further include a first end surface and a second end surface, the first end surface and the second end surface being adjacent to each other, and both the first end surface and the second end surface are adjacent to end surface 541A and end surface 541B. For example, the first end surface may be parallel to the xz plane in FIG. 10 , and the second end surface may be parallel to the yz plane in FIG. 10 .

[0364] Similarly, stopper 540B may further include a third end surface and a fourth end surface, the third end surface and the fourth end surface being adjacent to each other and adjacent to end surface 542A and end surface 542B. The third end surface may be parallel to the xz plane in FIG. 10 , and the fourth end surface may be parallel to the yz plane in FIG. 10 . Stopper 540C may further include a fifth end surface and a sixth end surface, the fifth end surface and the sixth end surface being adjacent to each other and adjacent to end surface 543A and end surface 543B. The fifth end surface may be parallel to the xz plane in FIG. 10 , and the sixth end surface may be parallel to the yz plane in FIG. 10 . Stopper 540D may further include a seventh end surface and an eighth end surface, the seventh end surface and the eighth end surface being adjacent to each other and adjacent to end surface 544A and end surface 544B. The seventh end surface may be parallel to the xz plane in FIG. 10 , and the eighth end surface may be parallel to the yz plane in FIG. 10 .

[0365] In some examples, the lens holder 520 can move within a third plane (the xy plane in FIG. 10 ) to adjust the position of the incident light's point of incidence on the lens, thereby implementing an anti-shake function for the camera module. The lens holder 520 can also move along a second direction (the z-axis in FIG. 10 ) to adjust the object distance and image distance of the camera module, thereby implementing an autofocus or focus adjustment function for the camera module.

[0366] When the lens holder 520 approaches the lens cover 510 in the second direction, the lens holder 520 may contact or collide with the lens cover 510. In this case, the end faces 541A, 542A, 543A, and 544A of the four stoppers (stoppers 540A, 540B, 540C, and 540D) may contact or collide with the inner wall of the lens cover 510. When the lens holder 520 moves toward the lens mount 530 in the second direction, the lens holder 520 may contact or collide with the lens mount 530. In this case, the end faces 541B, 542B, 543B, and 544B of the four stoppers (stoppers 540A, 540B, 540C, and 540D) may contact or collide with the outer wall of the lens mount 530.

[0367] When the lens frame 520 approaches the lens cover 510 along the y-axis direction in Figure 10, the lens frame 520 may contact or collide with the lens cover 510. In this case, the first end surface and the third end surface of the four stoppers (stopper 540A, stopper 540B, stopper 540C, and stopper 540D) may contact or collide with the inner wall of the lens cover 510, or the fifth end surface and the seventh end surface may contact or collide with the inner wall of the lens cover 510.

[0368] When the lens frame 520 approaches the lens cover 510 along the x-axis direction in FIG10 , the lens frame 520 may contact or collide with the lens cover 510. In this case, the second end surface and the eighth end surface of the four stoppers (stopper 540A, stopper 540B, stopper 540C, and stopper 540D) may contact or collide with the inner wall of the lens cover 510, or the fourth end surface and the sixth end surface may contact or collide with the inner wall of the lens cover 510.

[0369] Multiple end surfaces of the four stoppers provided on the lens frame 520 may be coated with dustproof material to reduce the adverse effects of debris generated during the collision between the lens frame 520 and the lens cover 510 or the lens mount 530 on the imaging quality of the camera module.

[0370] Dustproof materials can be one or more of the following: oils, lipids, or soft rubbers. Oils can include mineral oils, synthetic oils, animal or plant oils, or water-based liquids. Lipids can include soap-based lipids, hydrocarbon-based lipids, inorganic lipids, or organic lipids. Soft rubbers can include silicone, thermoplastic elastomers, thermoplastic polyurethane elastomer rubber, polyvinyl chloride, or rubber.

[0371] The dustproof material can be composed of materials with good high temperature resistance, low temperature stability, oxidation resistance, hydrophobicity and electrical insulation, etc.

[0372] In some examples, the dust-proof material may include one or more of the following materials: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. In other words, the dust-proof material may include only one of fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds, or the dust-proof material may include two or three of the following: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds.

[0373] In the case where the dustproof material includes multiple types of the above three types of organic matter, this application does not limit the component content of different types of organic matter in the dustproof material.

[0374] In some examples, the main components of the dust-proof material may include one or more functional groups: -CF-, -CF2-, or -CF3.

[0375] For example, the dustproof material containing the above functional groups may be composed of one or more of the following: one or more of fluorocarbons, fluoroethers, fluoroalcohols, fluoroketones, or fluorocarboxylic acids. For example, the dustproof material may include fluoro oil and / or fluoro resin.

[0376] In some scenarios, fluorocarbons may also be referred to as fluorocarbon organics. For example, fluorocarbons may be fluoroalkanes, fluoroalkenes, or fluoroalkynes, such as carbon tetrafluoride, tetrafluoroethylene, or hexafluoropropylene.

[0377] In some scenarios, fluoroether may also be referred to as fluoroether organic matter. For example, fluoroether may be perfluoroethyl ether, difluoroethyl ether, or trifluoroethyl ether.

[0378] For example, the fluoroalcohol may be perfluoromethanol, perfluoroethanol, or perfluoropropanol, etc. The fluoroketone may be perfluoroacetone, difluorohexanone, or trifluoromethylketone, etc. The fluorocarboxylic acid may be difluoroacetic acid, trifluoromethylpropionic acid, or heptafluorodecanoic acid, etc.

[0379] For example, the present application can determine the functional groups and chemical bonds of the components of the dustproof material by Fourier transform infrared spectroscopy (FTIR) testing. FTIR can analyze the types of chemical functional groups and chemical bonds contained in the compound molecules contained in the sample by testing the absorption characteristics of the sample for infrared light. In the FTIR spectrum, the horizontal axis usually represents the wave number (cm -1 ), which represents the frequency of infrared radiation. The vertical axis represents transmittance, absorbance, or reflectance, etc., reflecting the degree of absorption of infrared light of a specific wavelength by the sample under test.

[0380] For example, the dustproof material is subjected to FTIR testing. If the wave number is 1240 cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there is a functional group -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be said that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it can be said that there is a functional group -CF3 in the components of the dust-proof material.

[0381] The above FTIR test results can also show that the components of the dustproof material include carbon and fluorine elements. According to the FTIR test results, it can be determined that the components of the dustproof material may be fluorocarbon organic matter, for example, the components of the dustproof material may be polytetrafluoroethylene (C2F4)n, etc.

[0382] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0383] For example, the dustproof material is subjected to FTIR testing. If the wave number is 990 cm -1 If an absorption peak can be detected near the wave number 1240cm, and the absorption peak is sharp and strong, it can be said that there is a functional group -COC- in the components of the dustproof material. In addition, if the FTIR test result is at the wave number 1240cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there are functional groups -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be shown that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it means that the functional group -CF3 still exists in the components of the dust-proof material.

[0384] The above FTIR test results can also show that the components of the dustproof material contain carbon, fluorine and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material can be fluoroether organic matter (fluoroether). For example, the components of the dustproof material can be perfluoropolyether (CF3O[-CF(CF3)CF2O-] x (-CF2O-)yCF3), perfluoroethyl ether or difluoroethyl ether, etc.

[0385] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0386] In some examples, the main component of the dust-proof material may include the functional group -Si-O-. The main component of the dust-proof material may further include one or more of the following functional groups: -CH3, -CH2-, or -CH-.

[0387] Illustratively, the component of the dust-proof material containing the above functional groups may be a silicon-containing organic matter. Illustratively, the silicon-containing organic matter may be one or more of the following: silane, silanol or organosiloxane.

[0388] For example, the silane may be methylsilane or dimethylsilane, and the silanol may be trimethylsilanol or triethoxysilanol.

[0389] For example, the organosiloxane may be dimethylsiloxane, polydimethylsiloxane (C2H6OSi)n, vinylsiloxane, silicone resin, or the like.

[0390] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0391] Perform FTIR test on dustproof materials. If the wave number is 1092cm -1 If an absorption peak can be detected near the wave number 3000cm, it can be said that the dustproof material contains -Si-O- chemical bonds. -1 to 2840cm -1 If an absorption peak can be detected within the range of , it can be explained that the components of the dust-proof material also contain one or more of the following functional groups: -CH3, -CH2- or -CH-.

[0392] The above FTIR test results can also indicate that the components of the dustproof material include carbon, silicon and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material may include organic siloxane, for example, the components of the dustproof material may include polyorganosiloxane or silicone resin.

[0393] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -Si-C-, etc., and this application does not impose any limitation on this.

[0394] In some examples, the main component of the dust-proof material may include only one or more of the functional groups -CH3, -CH2-, or -CH-.

[0395] Illustratively, the dust-proof material may mainly contain hydrocarbon organic matter, and the hydrocarbon organic matter may be one or more of alkanes, olefins, aromatic hydrocarbons, and the like.

[0396] For example, the alkane may include a linear alkane, a cycloalkane, etc., for example, a linear alkane or a cycloalkane having 15 to 40 carbon atoms in the molecule. The aromatic hydrocarbon may include a low molecular weight polycyclic aromatic hydrocarbon, etc.

[0397] For example, the olefin may include polyalphaolefins (PAO). Here, polyalphaolefin refers to an organic compound obtained from alpha olefins through polymerization, etc., wherein alpha olefin refers to a type of monoolefin having a double bond located at the end of the molecular chain (i.e., the first carbon atom), common examples of which include ethylene, propylene, 1-butene, 1-hexene, etc.

[0398] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0399] Perform FTIR testing on dustproof materials. If the wave number is 2960cm -1 Nearby, 2870cm -1 Nearby and 1380cm -1 If an absorption peak is detected near the wave number 2930cm -1 Nearby and 2850cm -1 If an absorption peak can be detected near the wave number 1460cm, it can be determined that the dustproof material may contain a functional group -CH2-. -1 If an absorption peak can be detected near the wave number 722cm, it can be determined that the components of the dustproof material may contain alkyl groups. -1 If an absorption peak is detected near , it can be determined that the components of the dust-proof material may contain alkanes with multiple carbon numbers.

[0400] The above FTIR test results can also indicate that the components of the dust-proof material contain carbon and hydrogen elements. According to the FTIR test results, it can be determined that the components of the dust-proof material may contain one or more functional groups -CH3, -CH2- or -CH-. For example, the components of the dust-proof material may include polyalphaolefin.

[0401] In some examples, the dustproof material may include multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. Alternatively, the dustproof material may be a mixture of multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. FTIR testing of the multiple different types of materials may reveal characteristic peaks of different functional groups within the different types of materials.

[0402] Illustratively, the dust-proof material may be composed of one or more of the following: fluorocarbon organic matter, fluoroether organic matter, organosiloxane or polyalphaolefin.

[0403] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and fluoroether organics can detect characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -COC-.

[0404] For example, when a dustproof material containing fluorocarbon organic matter and organopolysiloxane is subjected to FTIR testing, characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -Si-O- can be detected.

[0405] For example, by performing FTIR testing on a dust-proof material comprising a fluoroether organic compound and an organopolysiloxane, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CF-, -CF2-, or -CF3 can be detected.

[0406] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and polyalphaolefins can detect characteristic peaks reflecting stretching vibrations of one or more of the functional groups -CF-, -CF2- or -CF3 and one or more of the functional groups -CH3, -CH2- or -CH-.

[0407] For example, when performing FTIR testing on a dustproof material containing a fluoroether organic compound and a poly-alpha-olefin, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CH3, -CH2-, or -CH- can be detected.

[0408] It should be noted that using FTIR to detect the components of dust-proof materials is only a test method for determining the components of dust-proof materials and should not be regarded as a limitation on the components of dust-proof materials. There are many other methods to determine the components of dust-proof materials, for example, through nuclear magnetic resonance testing, Raman spectroscopy testing, etc. This application does not impose any restrictions on this.

[0409] It should also be noted that the test results of FTIR are affected by many factors such as environmental factors, sample factors and operating methods. The errors introduced by these factors may cause deviations in the test results to a certain extent. In other words, the position of the characteristic peak of the above-mentioned dust-proof material component reflected in the FTIR test results is only an exemplary illustration. There may be a certain deviation between the position of the actual characteristic peak and the position of the characteristic peak provided in this application. The position of the characteristic peak in the above example should not be regarded as a limitation on this application. In some examples, the dust-proof material can be a material that is liquid at room temperature. The dust-proof material in a liquid state is convenient for coating on the impact surface of the camera module, which is beneficial to simplify the processing and production process of the camera module. For example, the storage modulus E of the dust-proof material at 25°C satisfies: E≤50kPa. For example, the E of the dust-proof material at 25°C can be 40kPa, 30kPa, 20kPa or 10kPa, etc.

[0410] In the actual manufacturing process, the liquid dust-proof material can be sprayed at multiple points on different areas of the impact surface according to the size of the impact surface, and then the fluid dust-proof material can be made to flow and coat the impact surface through vibration.

[0411] In some examples, the dustproof material has a certain degree of adhesion, allowing debris or dust in the camera module to adhere to the dustproof material. For example, the viscosity η of the dustproof material at 25°C satisfies: η ≥ 5000 mPa·s. For example, the viscosity η of the dustproof material at 25°C can be 10000 mPa·s, 15000 mPa·s, 20000 mPa·s, or 25000 mPa·s.

[0412] In order to improve the stability of the dust-proof material and improve the anti-shake performance and imaging quality stability during the use of the camera module, in some examples, the dust-proof material may have certain high temperature resistance or thermal stability.

[0413] For example, the mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%. For example, α can be 0.20%, 0.15%, 0.10%, or 0.05%.

[0414] In some examples, the dustproof material can be applicable to a relatively wide temperature range. For example, within the temperature range of -30°C to 120°C, the storage modulus E of the dustproof material can satisfy: E≤150kPa, and the viscosity η satisfies: η≥5000mPa·s.

[0415] In some examples, the lens cover 510 and the lens holder 530 may also be provided with impact surfaces corresponding to the impact surfaces on the lens frame 520, and one or more of these impact surfaces may also be coated with the aforementioned dust-proof material.

[0416] FIG12 is a partial structural diagram of a variable aperture assembly 600 provided in an embodiment of the present application. The variable aperture assembly 600 may be the aforementioned aperture 110, aperture 210, aperture 350, or aperture 410, etc. In other words, the variable aperture assembly 600 may be installed in the aforementioned first camera module 100, second camera module 200, or third camera module 300, etc. The variable aperture assembly 600 may include blades (not shown), a blade seat 620, and a drive assembly 610.

[0417] In some examples, the blade seat 620 may be an annular structure, and a plurality of fixing structures may be provided on the end surface of the blade seat 620, and the plurality of fixing structures may correspond to the blades included in the variable aperture assembly 600. The fixing structures may be used to achieve a fixed connection between the blades and the blade seat 620. For example, the fixing structures may be cylindrical first protrusions 621 provided on the end surface of the blade seat 620, and the blades may be provided with circular holes corresponding to the sizes of these cylindrical protrusions, so that the blades can be fitted onto the first protrusions 621 through these circular holes.

[0418] In some examples, the drive assembly 610 may be an annular structure sleeved around the outer circumference of the blade seat 620, and the drive assembly 610 may rotate about the z-axis shown in Figure 12. In one possible implementation, the ends of the plurality of blades away from the circular holes may further be provided with channel-shaped through-holes, and the end surface of the drive assembly 610 near the blades may also be provided with a plurality of cylindrical second protrusions 611. The diameter of the second protrusions 611 may correspond to the width of the channel-shaped through-holes on the blades, so that the channel-shaped through-holes on the blades can be sleeved on the second protrusions 611.

[0419] During the rotation of the driving component 610 around the z-axis, the blades can rotate around the first protrusion 621 on the blade seat 620 along the channel-shaped through hole on the blades, and multiple blades overlap each other. During the rotation of the blades, the size of the light-transmitting hole formed by the multiple blades can change, thereby enabling the variable aperture component 600 to adjust the amount of light entering the camera module and other functions.

[0420] To control the angle of rotation of the drive assembly 610 about the z-axis, in some examples, the inner sidewall of the drive assembly 610 may be provided with one or more protrusions 630, and the outer sidewall of the blade seat 620 may be provided with slots 640 corresponding to the protrusions 630. The number, position, and size of the protrusions 630 and the slots 640 may match each other so that the protrusions 630 can extend into the slots 640.

[0421] During the relative rotation of the drive assembly 610 and the blade seat 620, the side wall of the protrusion 630 may contact or collide with the side wall of the groove 640. In some examples, the protrusion 630 may be provided with an impact surface 631A and an impact surface 631B, and the impact surface 631A and the impact surface 631B are arranged opposite each other. The groove 640 may be provided with an impact surface 641A and an impact surface 641B arranged opposite each other. For example, when the drive assembly 610 rotates clockwise about the z-axis, the impact surface 631B may contact or collide with the impact surface 641B. For example, when the drive assembly 610 rotates counterclockwise about the z-axis, the impact surface 631A may contact or collide with the impact surface 641A.

[0422] In order to reduce the probability of dust generation due to collision during the relative movement of the driving assembly 610 and the blade seat 620 , a dust-proof material may be coated on the impact surfaces of the protrusion 630 and the groove 640 .

[0423] Dustproof materials can be one or more of the following: oils, lipids, or soft rubbers. Oils can include mineral oils, synthetic oils, animal or plant oils, or water-based liquids. Lipids can include soap-based lipids, hydrocarbon-based lipids, inorganic lipids, or organic lipids. Soft rubbers can include silicone, thermoplastic elastomers, thermoplastic polyurethane elastomer rubber, polyvinyl chloride, or rubber.

[0424] The dustproof material can be composed of materials with good high temperature resistance, low temperature stability, oxidation resistance, hydrophobicity and electrical insulation, etc.

[0425] In some examples, the dust-proof material may include one or more of the following materials: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. In other words, the dust-proof material may include only one of fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds, or the dust-proof material may include two or three of the following: fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds.

[0426] In the case where the dustproof material includes multiple types of the above three types of organic matter, this application does not limit the component content of different types of organic matter in the dustproof material.

[0427] In some examples, the main components of the dust-proof material may include one or more functional groups: -CF-, -CF2-, or -CF3.

[0428] For example, the dustproof material containing the above functional groups may be composed of one or more of the following: one or more of fluorocarbons, fluoroethers, fluoroalcohols, fluoroketones, or fluorocarboxylic acids. For example, the dustproof material may include fluoro oil and / or fluoro resin.

[0429] In some scenarios, fluorocarbons may also be referred to as fluorocarbon organics. For example, fluorocarbons may be fluoroalkanes, fluoroalkenes, or fluoroalkynes, such as carbon tetrafluoride, tetrafluoroethylene, or hexafluoropropylene.

[0430] In some scenarios, fluoroether may also be referred to as fluoroether organic matter. For example, fluoroether may be perfluoroethyl ether, difluoroethyl ether, or trifluoroethyl ether.

[0431] For example, the fluoroalcohol may be perfluoromethanol, perfluoroethanol, or perfluoropropanol, etc. The fluoroketone may be perfluoroacetone, difluorohexanone, or trifluoromethylketone, etc. The fluorocarboxylic acid may be difluoroacetic acid, trifluoromethylpropionic acid, or heptafluorodecanoic acid, etc.

[0432] For example, the present application can determine the functional groups and chemical bonds of the components of the dustproof material by Fourier transform infrared spectroscopy (FTIR) testing. FTIR can analyze the types of chemical functional groups and chemical bonds contained in the compound molecules contained in the sample by testing the absorption characteristics of the sample for infrared light. In the FTIR spectrum, the horizontal axis usually represents the wave number (cm -1 ), which represents the frequency of infrared radiation. The vertical axis represents transmittance, absorbance, or reflectance, etc., reflecting the degree of absorption of infrared light of a specific wavelength by the sample under test.

[0433] For example, the dustproof material is subjected to FTIR testing. If the wave number is 1240 cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there is a functional group -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be said that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it can be said that there is a functional group -CF3 in the components of the dust-proof material.

[0434] The above FTIR test results can also show that the components of the dustproof material include carbon and fluorine elements. According to the FTIR test results, it can be determined that the components of the dustproof material may be fluorocarbon organic matter, for example, the components of the dustproof material may be polytetrafluoroethylene (C2F4)n, etc.

[0435] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0436] For example, the dustproof material is subjected to FTIR testing. If the wave number is 990 cm -1If an absorption peak can be detected near the wave number 1240cm, and the absorption peak is sharp and strong, it can be said that there is a functional group -COC- in the components of the dustproof material. In addition, if the FTIR test result is at the wave number 1240cm -1 If an absorption peak can be detected near the wave number 1190cm, it can be said that there are functional groups -CF- in the components of the dustproof material. -1 If an absorption peak can be detected near the wave number 1306cm, it can be shown that there is a functional group -CF2- in the components of the dustproof material. -1 If an absorption peak can be detected near it, it means that the functional group -CF3 still exists in the components of the dust-proof material.

[0437] The above FTIR test results can also show that the components of the dustproof material contain carbon, fluorine and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material can be fluoroether organic matter (fluoroether). For example, the components of the dustproof material can be perfluoropolyether (CF3O[-CF(CF3)CF2O-] x (-CF2O-)yCF3), perfluoroethyl ether or difluoroethyl ether, etc.

[0438] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -CC-, etc., and this application does not impose any limitation on this.

[0439] In some examples, the main component of the dust-proof material may include the functional group -Si-O-. The main component of the dust-proof material may further include one or more of the following functional groups: -CH3, -CH2-, or -CH-.

[0440] Illustratively, the component of the dust-proof material containing the above functional groups may be a silicon-containing organic matter. Illustratively, the silicon-containing organic matter may be one or more of the following: silane, silanol or organosiloxane.

[0441] For example, the silane may be methylsilane or dimethylsilane, and the silanol may be trimethylsilanol or triethoxysilanol.

[0442] For example, the organosiloxane may be dimethylsiloxane, polydimethylsiloxane (C2H6OSi)n, vinylsiloxane, silicone resin, or the like.

[0443] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0444] Perform FTIR test on dustproof materials. If the wave number is 1092cm -1If an absorption peak can be detected near the wave number 3000cm, it can be said that the dustproof material contains -Si-O- chemical bonds. -1 to 2840cm -1 If an absorption peak can be detected within the range of , it can be explained that the components of the dust-proof material also contain one or more of the following functional groups: -CH3, -CH2- or -CH-.

[0445] The above FTIR test results can also indicate that the components of the dustproof material include carbon, silicon and oxygen elements. According to the FTIR test results, it can be determined that the components of the dustproof material may include organic siloxane, for example, the components of the dustproof material may include polyorganosiloxane or silicone resin.

[0446] It should be understood that the dust-proof material composed above may also include other functional groups or chemical bonds, such as -Si-C-, etc., and this application does not impose any limitation on this.

[0447] In some examples, the main component of the dust-proof material may include only one or more of the functional groups -CH3, -CH2-, or -CH-.

[0448] Illustratively, the dust-proof material may mainly contain hydrocarbon organic matter, and the hydrocarbon organic matter may be one or more of alkanes, olefins, aromatic hydrocarbons, and the like.

[0449] For example, the alkane may include a linear alkane, a cycloalkane, etc., for example, a linear alkane or a cycloalkane having 15 to 40 carbon atoms in the molecule. The aromatic hydrocarbon may include a low molecular weight polycyclic aromatic hydrocarbon, etc.

[0450] For example, the olefin may include polyalphaolefins (PAO). Here, polyalphaolefin refers to an organic compound obtained from alpha olefins through polymerization, etc., wherein alpha olefin refers to a type of monoolefin having a double bond located at the end of the molecular chain (i.e., the first carbon atom), common examples of which include ethylene, propylene, 1-butene, 1-hexene, etc.

[0451] Similarly, the present application can determine the functional groups and chemical bonds of the components of the dustproof material through FTIR testing.

[0452] Perform FTIR testing on dustproof materials. If the wave number is 2960cm -1 Nearby, 2870cm -1 Nearby and 1380cm -1 If an absorption peak is detected near the wave number 2930cm -1 Nearby and 2850cm -1If an absorption peak can be detected near the wave number 1460cm, it can be determined that the dustproof material may contain a functional group -CH2-. -1 If an absorption peak can be detected near the wave number 722cm, it can be determined that the components of the dustproof material may contain alkyl groups. -1 If an absorption peak is detected near , it can be determined that the components of the dust-proof material may contain alkanes with multiple carbon numbers.

[0453] The above FTIR test results can also indicate that the components of the dust-proof material contain carbon and hydrogen elements. According to the FTIR test results, it can be determined that the components of the dust-proof material may contain one or more functional groups -CH3, -CH2- or -CH-. For example, the components of the dust-proof material may include polyalphaolefin.

[0454] In some examples, the dustproof material may include multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. Alternatively, the dustproof material may be a mixture of multiple compounds selected from fluorine-containing organic compounds, silicon-containing organic compounds, or hydrocarbon organic compounds. FTIR testing of the multiple different types of materials may reveal characteristic peaks of different functional groups within the different types of materials.

[0455] Illustratively, the dust-proof material may be composed of one or more of the following: fluorocarbon organic matter, fluoroether organic matter, organosiloxane or polyalphaolefin.

[0456] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and fluoroether organics can detect characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -COC-.

[0457] For example, when a dustproof material containing fluorocarbon organic matter and organopolysiloxane is subjected to FTIR testing, characteristic peaks reflecting the stretching vibration of one or more of the functional groups -CF-, -CF2- or -CF3 and the functional group -Si-O- can be detected.

[0458] For example, by performing FTIR testing on a dust-proof material comprising a fluoroether organic compound and an organopolysiloxane, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CF-, -CF2-, or -CF3 can be detected.

[0459] For example, FTIR testing of dust-proof materials containing fluorocarbon organics and polyalphaolefins can detect characteristic peaks reflecting stretching vibrations of one or more of the functional groups -CF-, -CF2- or -CF3 and one or more of the functional groups -CH3, -CH2- or -CH-.

[0460] For example, when performing FTIR testing on a dustproof material containing a fluoroether organic compound and a poly-alpha-olefin, characteristic peaks reflecting stretching vibrations of one or more of the functional groups -COC- and -CH3, -CH2-, or -CH- can be detected.

[0461] It should be noted that using FTIR to detect the components of dust-proof materials is only a test method for determining the components of dust-proof materials and should not be regarded as a limitation on the components of dust-proof materials. There are many other methods to determine the components of dust-proof materials, for example, through nuclear magnetic resonance testing, Raman spectroscopy testing, etc. This application does not impose any restrictions on this.

[0462] It should also be noted that the test results of FTIR are affected by many factors such as environmental factors, sample factors and operating methods. The errors introduced by these factors may cause deviations in the test results to a certain extent. In other words, the position of the characteristic peak of the above-mentioned dust-proof material component reflected in the FTIR test results is only an exemplary illustration. There may be a certain deviation between the position of the actual characteristic peak and the position of the characteristic peak provided in this application. The position of the characteristic peak in the above example should not be regarded as a limitation on this application. In some examples, the dust-proof material can be a material that is liquid at room temperature. The dust-proof material in a liquid state is convenient for coating on the impact surface of the camera module, which is beneficial to simplify the processing and production process of the camera module. For example, the storage modulus E of the dust-proof material at 25°C satisfies: E≤50kPa. For example, the E of the dust-proof material at 25°C can be 40kPa, 30kPa, 20kPa or 10kPa, etc.

[0463] In the actual manufacturing process, the liquid dust-proof material can be sprayed at multiple points on different areas of the impact surface according to the size of the impact surface, and then the fluid dust-proof material can be made to flow and coat the impact surface through vibration.

[0464] In some examples, the dustproof material has a certain degree of adhesion, allowing debris or dust in the camera module to adhere to the dustproof material. For example, the viscosity η of the dustproof material at 25°C satisfies: η ≥ 5000 mPa·s. For example, the viscosity η of the dustproof material at 25°C can be 10000 mPa·s, 15000 mPa·s, 20000 mPa·s, or 25000 mPa·s.

[0465] In order to improve the stability of the dust-proof material and improve the anti-shake performance and imaging quality stability during the use of the camera module, in some examples, the dust-proof material may have certain high temperature resistance or thermal stability.

[0466] For example, the mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%. For example, α can be 0.20%, 0.15%, 0.10%, or 0.05%.

[0467] In some examples, the dustproof material can be applicable to a relatively wide temperature range. For example, within the temperature range of -30°C to 120°C, the storage modulus E of the dustproof material can satisfy: E≤150kPa, and the viscosity η satisfies: η≥5000mPa·s.

[0468] The above uses a camera module with one or more of the following functions as an example: a variable aperture function, lens image stabilization function, sensor image stabilization function, and autofocus or focus adjustment function to illustrate that movable parts in the camera module can collide with fixed parts along a preset trajectory. In actual use, unexpected collisions may also occur between different structural components within the camera module. For example, if the electronic device 10 is dropped or squeezed, the structural components within the camera module may deform, causing friction, squeezing, or collisions.

[0469] In some examples, the camera module may include a first structural member and a second structural member, and relative motion may occur between the first structural member and the second structural member. For example, the first structural member and the second structural member may approach each other along a target direction, and a distance between a first plane on the first structural member and a second plane on the second structural member is shortest in the target direction. When the first structural member and the second structural member collide along the target direction, the first plane of the first structural member and the second plane of the second structural member first contact or collide.

[0470] In some examples, the first structural member may be a movable member or a fixed member, and the second structural member may be a movable member or a fixed member, which is not limited in this application.

[0471] The first plane of the first structural member and / or the second plane of the second structural member may be coated with the aforementioned dustproof material. The relevant properties of the dustproof material have been described in detail above and will not be repeated here for the sake of brevity.

[0472] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A camera module, characterized in that: include: A lens, a movable part, a fixed part and a photosensitive element for receiving light passing through the lens, The movable member comprises a first impact surface; The fixing member includes a second impact surface; The movable member is configured to be able to approach the fixed member along a target direction; Among them, the first impact surface and the second impact surface are the two surfaces with the smallest distance between the movable part and the fixed part in the target direction, and the first impact surface and / or the second impact surface are coated with dust-proof material, and the dust-proof material includes one or more of the following: oil material, lipid material or soft glue material.

2. The camera module according to claim 1, characterized in that: The storage modulus E of the dustproof material at 25° C. satisfies: E≤50 kPa.

3. The camera module according to claim 1 or 2, characterized in that: The viscosity η of the dustproof material at 25° C. satisfies: η≥5000 mPa·s.

4. The camera module according to any one of claims 1 to 3, characterized in that: The mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%.

5. The camera module according to any one of claims 1 to 4, characterized in that: The target direction is the axial direction of the lens, and the first impact surface and the second impact surface are perpendicular to the axial direction of the lens.

6. The camera module according to any one of claims 1 to 4, characterized in that: The target direction is perpendicular to the axial direction of the lens, and the first impact surface and the second impact surface are parallel to the axial direction of the lens.

7. The camera module according to claim 5, characterized in that: The movable part is sleeved on the outer periphery of the lens, the number of the first impact surfaces is multiple, and the multiple first impact surfaces are located on two end surfaces of the movable part that are oppositely arranged along the target direction.

8. The camera module according to claim 6, characterized in that: The movable part is mounted on the periphery of the lens, and includes a main structure located in the middle area and a plurality of first stop structures. The main structure is used to fix the lens, and the plurality of first stop structures are distributed on two side surfaces of the main structure that are relatively arranged along the target direction, and the first impact surface is located on a side of the first stop structure close to the second impact surface.

9. The camera module according to claim 8, characterized in that: The fixing member is sleeved on the outer side of the movable member, the fixing member comprises a second stop structure, and the second impact surface is located on a side of the second stop structure close to the first impact surface.

10. The camera module according to claim 9, characterized in that: The camera module also includes a container, which is used to accommodate the photosensitive element, and the end surface of the container close to the lens is coated with the dust-proof material.

11. The camera module according to claim 6, characterized in that: The movable part is sleeved on the outer periphery of the photosensitive element, and the movable part includes a main structure located in the middle area and a plurality of first stop structures, the main structure is used to fix the photosensitive element, the plurality of first stop structures are distributed on two side surfaces of the main structure that are relatively arranged along the target direction, and the first impact surface is located on a side of the first stop structure close to the second impact surface.

12. The camera module according to claim 11, characterized in that: The fixing part is sleeved on the outside of the movable part, and the fixing part includes a second stop structure. The second impact surface is located on a side of the second stop structure close to the first impact surface. The dustproof material is coated on the end surface of the fixing part close to the lens.

13. The camera module according to claim 6, characterized in that: The movable part is sleeved on the periphery of the lens and the photosensitive element, and the fixed part is sleeved on the periphery of the movable part.

14. The camera module according to any one of claims 1 to 13, characterized in that: The dust-proof material includes one or more of the following functional groups: -CF3, -CF2-, -CF-, -COC-, -CH3, -CH2-, -CH- or -Si-O-.

15. The camera module according to claim 14, characterized in that: The dustproof material includes one or more of the following: fluorocarbon organic matter, fluoroether organic matter, organic siloxane or poly-alpha-olefin.

16. The camera module according to claim 15, characterized in that: The fluorocarbon organic compound includes polytetrafluoroethylene, the fluoroether organic compound includes perfluoropolyether, and the organosiloxane includes polyorganosiloxane.

17. A variable aperture assembly, characterized in that: include: The blade, the blade seat and the driving assembly, the driving assembly is sleeved on the outer periphery of the blade seat, and the blade is arranged on the end surface of the blade seat away from the driving assembly. The blade seat includes a third impact surface; The drive assembly includes a fourth impact surface; The drive assembly is configured to be rotatable about a target rotation axis close to the blade seat; Among them, the third impact surface and the fourth impact surface are two surfaces that approach each other during the rotation of the driving component, and the third impact surface and / or the fourth impact surface are coated with dust-proof material, and the dust-proof material includes one or more of the following: oil material, lipid material or soft glue material.

18. The variable aperture assembly according to claim 17, characterized in that: The storage modulus E of the dustproof material at 25° C. satisfies: E≤50 kPa.

19. The variable aperture assembly according to claim 17 or 18, characterized in that: The viscosity η of the dustproof material at 25° C. satisfies: η≥5000 mPa·s.

20. The variable aperture assembly according to any one of claims 17 to 19, characterized in that: The mass evaporation loss α of the dustproof material at 200° C. for 24 hours satisfies: α≤0.25%.

21. The variable aperture assembly according to any one of claims 17 to 20, characterized in that: The outer wall of the blade seat is provided with a slot, the inner wall of the drive assembly is provided with a protrusion, the protrusion extends into the slot, the third impact surface is located on the slot, and the fourth impact surface is located on the protrusion.

22. The variable aperture assembly according to any one of claims 17 to 21, characterized in that: The dust-proof material includes one or more of the following functional groups: -CF3, -CF2-, -CF-, -COC, -CH3, -CH2-, -CH- or -Si-O-.

23. The variable aperture assembly according to claim 22, characterized in that: The dustproof material includes one or more of the following: fluorocarbon organic matter, fluoroether organic matter, organic siloxane or poly-alpha-olefin.

24. The camera module according to claim 23, characterized in that: The fluorocarbon organic compound includes polytetrafluoroethylene, the fluoroether organic compound includes perfluoropolyether, and the organosiloxane includes polyorganosiloxane.

25. A camera module, characterized in that: The invention comprises a lens, a photosensitive element and a variable aperture assembly according to any one of claims 17 to 24, wherein the variable aperture assembly is located on a side of the lens away from the photosensitive element.

26. An electronic device, characterized in that: It comprises a middle frame and a camera module according to any one of claims 1 to 16 or claim 24, wherein the camera module is fixedly connected to the middle frame.

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