Camera module and electronic equipment

Abstract

The utility model discloses a camera module and an electronic device, a base arranged on the image side of a lens assembly is provided with an accommodating groove with an opening along the optical axis direction, an optical filter is arranged in the accommodating groove, a gap is arranged between the peripheral wall of the optical filter and the inner wall surface of the accommodating groove, a dustproof member is arranged on the optical filter, and the dustproof member is arranged on the optical filter. The dustproof piece is connected with the optical filter and the base so as to cover the gap. The dustproof part is arranged to cover the gap between the peripheral wall of the optical filter and the inner wall surface of the accommodating groove, so that when the driving device drives the lens assembly connected with the driving device to move along the optical axis direction, foreign matters generated by collision of the driving device can be blocked through the dustproof part; therefore, the condition that the imaging quality of the camera module is affected due to the fact that the foreign matter falls onto the optical filter or the imaging assembly arranged in the accommodating groove is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of camera technology, in particular to a camera module and electronic equipment. BACKGROUND

[0002] The camera module is widely used in electronic equipment (such as mobile phones, computers, etc.), and the electronic equipment realizes the conversion between optical signals and electrical signals through the camera module, records and saves image information, thereby realizing the functions of taking pictures and shooting.

[0003] When the lens and the driving part of the camera module are working, the movable part and the fixed part of the driving part will move up and down to focus, and may collide continuously during the movement process to generate foreign matter. If these foreign matters fall on the photosensitive element of the camera module, the imaging quality of the camera module will be affected. UTILITY MODEL CONTENT

[0004] The utility model discloses a camera module and electronic equipment can prevent dust from falling on the photosensitive element of the camera module to improve the imaging quality of the camera module.

[0005] In order to achieve the above purpose, the utility model content discloses a camera module, which comprises:

[0006] A lens assembly;

[0007] A driving device connected with the lens assembly to drive the lens assembly to move along the optical axis direction;

[0008] A base provided on the image side of the lens assembly, wherein the base is provided with a containing groove opened along the optical axis direction;

[0009] An optical filter provided in the containing groove, wherein the outer peripheral wall of the optical filter has a gap with the inner wall surface of the containing groove;

[0010] An imaging assembly at least partially provided in the containing groove and located on the light exit side of the optical filter; and

[0011] A dustproof part located on the optical filter, wherein the dustproof part is connected with the optical filter and the base to cover the gap.

[0012] In this way, the foreign matter falling down can be received by the dustproof part, so that the foreign matter can be prevented from falling on the optical filter or the imaging assembly, which is beneficial to improve the imaging quality of the camera module and improve the user's experience.

[0013] As an optional implementation, the base has a first surface close to the lens assembly and a second surface opposite to the first surface, and the accommodating groove has a first opening on the first surface and a second opening on the second surface.

[0014] The filter includes an incident surface and an emergent surface opposite to each other along the optical axis direction, the incident surface is flush with the first surface to cover the first opening, the imaging assembly is arranged apart from the emergent surface, and the imaging assembly covers the second opening.

[0015] The dustproof member is located on the first surface and the incident surface, and the dustproof member connects the first surface and the incident surface.

[0016] In this way, the surface of the dustproof member close to the filter can be attached to the first surface and the incident surface, so that the dustproof member can better cover the gap between the outer peripheral wall of the filter and the inner wall surface of the accommodating groove, and foreign matter can be effectively prevented from falling onto the filter or the imaging assembly.

[0017] As an optional implementation, the dustproof member is configured as a dustproof ring, a ring-shaped hollow part of the dustproof member is arranged corresponding to the middle part of the filter, and a distance between an inner ring surface of the dustproof member to an outer ring surface of the dustproof member is greater than a width of the gap along a radial direction of the lens assembly.

[0018] In this way, the dustproof member can completely cover the gap, so that foreign matter can be effectively prevented from falling onto the filter or the imaging assembly.

[0019] As an optional implementation, the dustproof member includes a third surface and a fourth surface opposite to each other along the optical axis direction, the third surface is connected to the base and the filter, and the fourth surface is arranged close to the lens assembly, and the fourth surface is configured as a non-flat surface.

[0020] Compared with the fourth surface being a flat surface, the surface area of the fourth surface can be increased, so that foreign matter can be more effectively prevented from falling onto the filter or the imaging assembly.

[0021] As an optional implementation, the dustproof member has a plurality of protruding parts and recessed parts, the protruding parts and the recessed parts are connected to each other to form the fourth surface as a non-flat surface.

[0022] In this way, the surface area of the fourth surface can be increased, which is conducive to preventing foreign matter from falling into the gap or the filter.

[0023] As an optional implementation, the protruding parts and / or the recessed parts are provided with an adhesive layer configured to bond foreign matter.

[0024] In this way, the fourth surface can adhere to the foreign matter, and the foreign matter can be effectively prevented from falling onto the filter or the imaging assembly.

[0025] As an optional implementation, the lens assembly comprises a lens barrel and a lens arranged in the lens barrel, and the lens barrel is provided with a barrier portion protruding towards the base at one end close to the base, and the barrier portion corresponds to the recessed portion of the fourth surface.

[0026] In this way, the barrier portion and the recessed portion are matched to reduce the distance between the one end of the lens barrel close to the base and the fourth surface of the dustproof member, and the foreign matter can be effectively prevented from falling onto the filter or the imaging assembly.

[0027] As an optional implementation, the barrier portion at least partially extends into the corresponding recessed portion, and the barrier portion and the recessed portion have a distance in the direction of the optical axis.

[0028] On the one hand, by extending the barrier portion at least partially into the corresponding recessed portion, the distance between the one end of the lens barrel close to the base and the fourth surface of the dustproof member can be reduced, and the foreign matter can be effectively prevented from falling onto the filter or the imaging assembly. On the other hand, the barrier portion and the recessed portion have a distance, so that the barrier portion and the dustproof member can be prevented from colliding to damage the lens barrel or the dustproof member.

[0029] As an optional implementation, the accommodating groove comprises a first groove body and a second groove body arranged in sequence in the direction of the optical axis, the first groove body and the second groove body are communicated, the first groove body is arranged close to the lens assembly, the filter is located in the first groove body, and the imaging assembly is at least partially located in the second groove body.

[0030] In this way, the filter and the imaging assembly can have a distance in the direction of the optical axis, so that the light emitted from the filter can be imaged on the imaging assembly.

[0031] In the second aspect, the utility model further discloses an electronic equipment comprising the camera module as described in the first aspect.

[0032] Compared with the prior art, the beneficial effects of the present application are:

[0033] The utility model provides a camera module and electronic equipment, through setting up the optical filter in the containing groove of base along the direction of optical axis, the outer peripheral wall of optical filter has the clearance between the inner wall surface of containing groove, the dustproof member is located on the optical filter, and the dustproof member is connected with the optical filter and base to cover the clearance, in this way, when driving the lens assembly to move along the direction of optical axis, the dustproof member can block the foreign matter caused by the collision of driving device, avoids the foreign matter to fall into the clearance, and then falls on the optical filter or imaging assembly, causes the imaging quality of camera module to be affected. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical scheme in the embodiment of the present application, the drawings needed in the embodiment will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0035] Figure 1 It is the sectional view of camera module in the related art;

[0036] Figure 2 It is the top view of camera module disclosed by the embodiment of the present application;

[0037] Figure 3 It is Figure 2 The sectional view of A-A in

[0038] Figure 4 It is the structure diagram of dustproof member disclosed by the embodiment of the present application;

[0039] Figure 5 It is Figure 3 The local enlarged view of B in

[0040] Figure 6 It is one of the schematic diagram of sectional shape of dustproof member disclosed by the embodiment of the present application;

[0041] Figure 7 It is the second schematic diagram of sectional shape of dustproof member disclosed by the embodiment of the present application;

[0042] Figure 8 It is the third schematic diagram of sectional shape of dustproof member disclosed by the embodiment of the present application;

[0043] Figure 9 It is the fourth schematic diagram of sectional shape of dustproof member disclosed by the embodiment of the present application;

[0044] Figure 10 It is the fifth schematic diagram of sectional shape of dustproof member disclosed by the embodiment of the present application;

[0045] Figure 11FIG. 1 is a structural schematic diagram of an electronic device disclosed by an embodiment of the present application.

[0046] Legend of reference signs:

[0047] 100- camera module of related art; 101- lens barrel; 102- base; 103- dustproof member; 200- camera module; 210- lens assembly; 211- lens barrel; 211a- blocking portion; 212- lens; 220- driving device; 221- fixed portion; 222- movable portion; 230- base; 231- accommodating groove; 231a- first opening; 231b- second opening; 231c- first groove body; 231d- second groove body; 232- first surface; 233- second surface; 234- receiving portion; 240- filter; 241- light entrance surface; 242- light exit surface; 250- imaging assembly; 251- image sensor; 252- circuit board; 260- dustproof member; 261- third surface; 262- fourth surface; 300- electronic device; O- optical axis direction. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0049] In the present application, the positions or location relationships indicated by the terms "upper", "lower", etc. are based on the positions or location relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific position, or to be constructed and operated in a specific position.

[0050] In addition, in addition to indicating the position or location relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. Those of ordinary skill in the art can understand the specific meaning of these terms in the present application according to the specific situation.

[0051] In addition, the terms "set", "connected" should be understood broadly. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. Those of ordinary skill in the art can understand the specific meaning of the above-mentioned terms in the present application according to the specific situation.

[0052] In addition, the terms "first", "second", and the like are used only to distinguish different devices, elements or components (the specific type and configuration of which can be the same or different), and are not intended to indicate or imply relative importance or quantity of the indicated devices, elements or components. Unless otherwise specified, the meaning of "a plurality" is two or more.

[0053] With the continuous progress of the camera technology of electronic devices, many users begin to pursue higher quality photos, and the adjustment of focal length is an important link to improve the picture quality. The adjustment of focal length is usually achieved by using a driving member, which includes a movable part and a fixed part. The movable part is connected to the lens, so that the lens can be moved along the optical axis direction by the movable part to achieve focusing.

[0054] Since the movable part of the driving member moves up and down relative to the fixed part during the operation of the camera module, foreign matter (such as dust, etc.) will be continuously generated during the movement. If these foreign matters fall on the light-sensitive element (such as a filter or an image sensor, etc.) of the camera module, the imaging quality of the camera module will be affected.

[0055] In the related art, in order to block the foreign matter from falling on the light-sensitive element of the camera module, please refer to Figure 1 , Figure 1 is a cross-sectional view of the camera module in the related art. A dust-proof member 103 is arranged in the gap between the lens barrel 101 and the base 102. One end of the dust-proof member 103 is connected to the lens barrel 101, and the other end abuts against the base 102. The dust-proof member 103 is used to block the gap between the lens barrel 101 and the base 102, so as to prevent foreign matter from falling on the light-sensitive element of the camera module 100. However, this arrangement requires the dust-proof member 103 to have elastic deformation capability, so that the dust-proof member 103 can still be connected to the lens barrel 101 and the base 102 when the lens barrel 101 moves, and the gap is blocked. The material and elastic coefficient of the dust-proof member 103 are required to be strict, which increases the production difficulty of the camera module.

[0056] Therefore, the embodiments of the present application disclose a camera module and an electronic device. The base arranged on the image side of the lens assembly is provided with a receiving groove which is open along the optical axis direction. The filter is arranged in the receiving groove, and there is a gap between the outer peripheral wall of the filter and the inner wall surface of the receiving groove. The dust-proof member is arranged on the filter, and the dust-proof member is connected to the filter and the base to cover the gap. By arranging the dust-proof member to cover the gap between the outer peripheral wall of the filter and the inner wall surface of the receiving groove, when the driving device drives the lens assembly connected thereto to move along the optical axis direction, the dust-proof member can block the foreign matter generated due to the collision of the driving device, so as to avoid the foreign matter from falling on the filter or the imaging assembly arranged in the receiving groove, thereby avoiding the case that the imaging quality of the camera module is affected.

[0057] The technical solutions of the present application will be further described below with reference to the embodiments and drawings.

[0058] Please refer to Figure 2 and Figure 3 , Figure 2 is a top view of the camera module disclosed in the embodiments of the present application, Figure 3 is Figure 2 A-A cross-sectional view. The camera module 200 of the present application includes a lens assembly 210, a driving device 220 connected with the lens assembly 210 to drive the lens assembly 210 to move along the optical axis direction O, a base 230, a filter 240, an imaging assembly 250, and a dustproof member 260. The base 230 is arranged on the image side of the lens assembly 210, and the base 230 is provided with a receiving groove 231 which is open along the optical axis direction O. The filter 240 is arranged in the receiving groove 231, and there is a gap between the outer wall of the filter 240 and the inner wall surface of the receiving groove 231. The imaging assembly 250 is at least partially arranged in the receiving groove 231 and located on the light exit side of the filter 240.

[0059] It can be understood that the above-mentioned lens assembly 210 includes an object side and an image side along the optical axis direction O. The object side refers to the side where the object to be photographed by the lens assembly 210 is located, and the image side refers to the side where the imaging of the lens assembly 210 is located.

[0060] It can be understood that the above-mentioned filter 240 includes a light entrance side and a light exit side along the optical axis direction O. The light entrance side refers to the side where the light enters, i.e. the side of the filter 240 close to the lens assembly 210. The light exit side refers to the side where the light exits, i.e. the side of the filter 240 away from the lens assembly 210.

[0061] It can be understood that the above-mentioned filter 240 can be an infrared cut-off filter or an ultraviolet cut-off filter, etc., which is not specifically limited in the embodiments.

[0062] Optionally, please refer to Figure 3 , the driving device 220 includes a fixed part 221 and a movable part 222. The fixed part 221 is arranged above the base 230, and the fixed part 221 surrounds the outer periphery of the lens assembly 210. The lens assembly 210 includes a lens barrel 211 and a lens 212 arranged in the lens barrel 211. The movable part 222 is connected with the lens barrel 211, and the movable part 222 and the fixed part 221 are movably connected, i.e. the movable part 222 can move relative to the fixed part 221 along the optical axis direction O, so as to drive the lens barrel 211 and the lens 212 to move relative to the fixed part 221 along the optical axis direction O, to adjust the distance between the lens 212 and the filter 240 along the optical axis direction O, and realize the focusing of the camera module 200.

[0063] It can be understood that the driving device 220 can adopt the form of a coil magnet to provide a driving force, specifically, the coil is arranged on the fixed part 221, the magnet is arranged on the movable part 222, and the movable part 222 is driven to move relative to the fixed part 221 along the optical axis direction O by energizing the coil to act with the magnet to generate a magnetic field, thereby driving the lens assembly 210 to move relative to the fixed part 221 along the optical axis direction O, and achieving the focusing of the camera module 200. Of course, as other examples, the driving device 220 can also adopt a ball-type motor.

[0064] Considering that when the driving device 220 is working, the movable part 222 of the driving device 220 moves up and down relative to the fixed part 221 along the optical axis direction O, and the movable part 222 and the fixed part 221 will constantly collide during the movement to generate foreign matter (such as dust or fragments of components, etc.), or dust in the external environment can also enter the camera module 200. If these foreign matters fall on the light-sensing mechanism (such as the filter 240 and / or the imaging assembly 250) of the camera module 200, the light will be blocked by the foreign matter on the filter 240 or the imaging assembly 250, causing part of the light to fail to reach the imaging area, so that black spots appear on the final image, affecting the imaging quality. Based on this, in order to block foreign matter from falling on the light-sensing element of the camera module 200, the camera module 200 of the present application is provided with a dustproof piece 260 connected with the filter 240 and the base 230 on the filter 240, to cover the gap between the outer wall of the filter 240 and the inner wall surface of the accommodating groove 231. In this way, the falling foreign matter can be intercepted by the dustproof piece 260, so as to avoid the foreign matter from falling on the filter 240 or the imaging assembly 250, which is conducive to improving the imaging quality of the camera module 200 and improving the user's experience.

[0065] In some embodiments, referring to Figure 3The base 230 can be a block structure, the base 230 has a first surface 232 close to the lens assembly 210 and a second surface 233 opposite to the first surface 232, the accommodating groove 231 has a first opening 231a on the first surface 232 and a second opening 231b on the second surface 233. The light filter 240 includes an incident surface 241 and an outgoing surface 242 opposite to each other along the optical axis direction O, the incident surface 241 is flush with the first surface 232 to cover the first opening 231a, the imaging assembly 250 is spaced apart from the outgoing surface 242, and the imaging assembly 250 covers the second opening 231b. The dustproof member 260 is located on the first surface 232 and the incident surface 241, and the dustproof member 260 is connected to the first surface 232 and the incident surface 241. Since the first surface 232 is flush with the incident surface 241, the dustproof member 260 is arranged on the first surface 232 and the incident surface 241, and the dustproof member 260 is connected to the first surface 232 and the incident surface 241, so that the surface of the dustproof member 260 close to the light filter 240 can be attached to the first surface 232 and the incident surface 241, so that the dustproof member 260 can cover the gap between the outer wall of the light filter 240 and the inner wall of the accommodating groove 231, and foreign matter can be effectively prevented from falling on the light filter 240 or the imaging assembly 250.

[0066] It can be understood that the first surface 232 flush with the incident surface 241 includes that the first surface 232 and the incident surface 241 can be completely flush, or the first surface 232 and the incident surface 241 are approximately flush due to processing factors.

[0067] In some embodiments, referring back to Figure 3 , the base 230 is provided with a receiving portion 234, the receiving portion 234 divides the accommodating groove 231 into a first groove body 231c and a second groove body 231d arranged in sequence along the optical axis direction O, the first groove body 231c and the second groove body 231d are communicated, the first opening 231a is formed as a top opening of the first groove body 231c, the second opening 231b is formed as a bottom opening of the second groove body 231d, the first groove body 231c is arranged close to the lens assembly 210, the light filter 240 is located in the first groove body 231c, the receiving portion 234 is used for receiving the light filter 240, and the imaging assembly 250 is at least partially located in the second groove body 231d. In this way, the receiving portion 234 is used for receiving the light filter 240, so that the light filter 240 is located in the first groove body 231c of the accommodating groove 231 close to the lens assembly 210, thereby fixing the position of the light filter 240. In addition, the light filter 240 and the imaging assembly 250 are arranged in the first groove body 231c and the second groove body 231d respectively, so that the light filter 240 and the imaging assembly 250 have a certain distance along the optical axis direction O, so as to ensure that the light emitted from the light filter 240 can be imaged on the imaging assembly 250.

[0068] Optionally, referring to Figure 4 The imaging assembly 250 includes an image sensor 251 and a circuit board 252. The image sensor 251 is disposed on the circuit board 252, and the circuit board 252 is disposed below the base 230. The image sensor 251 is located in the second groove 231d, and the image sensor 251 is electrically connected to the circuit board 252. The image sensor 251 is configured to receive light emitted by the optical filter 240, convert the light signal into an electrical signal, and transmit the electrical signal to the circuit board 252. In this way, the photographing and imaging functions of the camera module 200 can be achieved.

[0069] It can be understood that the image sensor 251 can be a complementary metal oxide semiconductor (CMOS) or a charge coupled device (CCD), and the like. The present embodiment does not make specific limitations on this.

[0070] It can be understood that the circuit board 252 can be a rigid circuit board 252 or a flexible circuit board 252, and the present embodiment does not make specific limitations on this.

[0071] In some embodiments, referring to Figure 4 , Figure 3 is a structural diagram of the dustproof piece disclosed in the embodiments of the present application. The dustproof piece 260 is configured as a dustproof ring. The annular hollow part of the dustproof ring is arranged corresponding to the middle part of the optical filter 240, that is, the annular hollow part of the dustproof ring is arranged corresponding to the effective filtering part of the optical filter 240. Moreover, the distance between the inner ring surface of the dustproof piece 260 and the outer ring surface of the dustproof piece 260 is greater than the width of the gap between the outer peripheral wall of the optical filter 240 and the inner wall surface of the accommodating groove 231 in the radial direction of the lens assembly 210. By the distance between the inner ring surface of the dustproof piece 260 and the outer ring surface of the dustproof piece 260 being greater than the width of the gap between the outer peripheral wall of the optical filter 240 and the inner wall surface of the accommodating groove 231 in the radial direction of the lens assembly 210, the dustproof piece 260 can completely cover the above-mentioned gap, and foreign matter can be effectively prevented from falling onto the optical filter 240 or the imaging assembly 250.

[0072] It can be understood that the distance between the inner ring surface of the dustproof piece 260 and the outer ring surface of the dustproof piece 260 needs to be greater than the width of the gap between the outer peripheral wall of the optical filter 240 and the inner wall surface of the accommodating groove 231 in the radial direction of the lens assembly 210 to completely cover the above-mentioned gap. However, it cannot be set too large to avoid the dustproof piece 260 blocking the light entering the optical filter 240, thereby affecting the imaging quality of the camera module 200. That is, when the dustproof ring is connected to the optical filter 240, it is mainly connected to the edge part of the optical filter 240.

[0073] It is understood that the material of the dustproof component 260 can be plastic or aluminum alloy, etc., and this embodiment does not make specific limitations on this.

[0074] Optionally, the dustproof ring can be a circular ring or a square ring; the following description will use the dustproof ring as an example.

[0075] Alternatively, please refer to the following: Figure 5 , combined Figure 5 , Figure 3 yes Figure 6 The enlarged view at point B shows that the dustproof component 260 includes a third surface 261 and a fourth surface 262 facing away from each other along the optical axis O. The third surface 261 is connected to the base 230 and the filter 240. The fourth surface 262 is located near the lens assembly 210 and is configured as a non-flat surface. The fourth surface 262 is the surface of the dustproof component 260 near the lens assembly 210; that is, the fourth surface 262 is the surface of the dustproof component 260 used to block foreign objects. By configuring the fourth surface 262 as a non-flat surface, its surface area is increased compared to a flat surface, thereby more effectively preventing foreign objects from falling onto the filter 240 or the imaging assembly 250.

[0076] It is understood that the aforementioned non-flat surface refers to the fourth surface 262 being uneven or irregular, which may have bumps, bends, twists, or other irregular shapes. In other words, the fourth surface 262 is non-planar.

[0077] It is understandable that there can be multiple examples of the aforementioned non-flat surface. In one example, the non-flat surface can be concave or convex, such as... Figure 7 and Figure 6 As shown, Figure 7 This is one of the schematic diagrams showing the cross-sectional shape of the dustproof component disclosed in the embodiments of this application. Figures 8 to 10 This is the second schematic diagram of the cross-sectional shape of the dustproof component disclosed in the embodiments of this application.

[0078] For another example, please refer to Figure 8 , Figure 9 This is the third schematic diagram of the cross-sectional shape of the dustproof component disclosed in the embodiments of this application. Figure 10 This is the fourth schematic diagram of the cross-sectional shape of the dustproof component disclosed in the embodiments of this application. Figures 8 to 10Fig. 5 is a schematic view of a cross-sectional shape of a dustproof member according to an embodiment of the present application. The dustproof member 260 has a plurality of protruding portions and recessed portions, and the protruding portions are connected to the recessed portions to form the fourth surface 262 into a non-flat surface. The dustproof member 260 in the form of the plurality of connected protruding portions and recessed portions is more helpful to increase the surface area of the fourth surface 262, and thus can more effectively prevent foreign matters from falling onto the optical filter 240 or the imaging assembly 250.

[0079] It is to be understood that the protruding portions and the recessed portions can have a semi-circular, triangular, square, or other cross-sectional shape along the radial direction of the lens assembly 210, and the present embodiments are not limited in this regard. Figure 8

[0080] That is, when the dustproof member 260 is provided with a plurality of recesses and / or protrusions, the recesses and / or protrusions are continuously arranged to form the fourth surface 262 into a non-flat surface, thereby increasing the surface area of the fourth surface 262 and preventing foreign matters from falling into the gap or onto the optical filter 240.

[0081] For example, as shown in Fig. 6, the plurality of recesses and protrusions form the fourth surface 262 into a sawtooth surface. Figure 8 Figure 9 For example, as shown in Fig. 7, the plurality of recesses and protrusions form the fourth surface 262 into a wavy surface. Figure 9 Figure 10 For example, as shown in Fig. 8, the plurality of recesses and protrusions form the fourth surface 262 into a square-tooth surface. Figure 10 Figure 5 In some embodiments, in order to further prevent dust from falling onto the optical filter 240, the fourth surface 262 can be provided with an adhesive layer (not shown) for adhering foreign matters. Optionally, the adhesive layer can be arranged in various positions. In one example, the adhesive layer is arranged on the protruding portions. Since the recessed portions can accommodate foreign matters, the adhesive layer arranged on the protruding portions can adhere some foreign matters to the protruding portions, thereby enabling the dustproof member 260 to more effectively prevent foreign matters from falling onto the optical filter 240 or the imaging assembly 250.

[0082] In another example, the adhesive layer is arranged on the recessed portions. Since the recessed portions can accommodate foreign matters, the adhesive layer arranged on the recessed portions can further adhere foreign matters to the recessed portions, thereby preventing the foreign matters from leaving the recessed portions and enabling the dustproof member 260 to more effectively prevent foreign matters from falling onto the optical filter 240 or the imaging assembly 250.

[0083] In another example, the adhesive layer is arranged on the recessed portions. Since the recessed portions can accommodate foreign matters, the adhesive layer arranged on the recessed portions can further adhere foreign matters to the recessed portions, thereby preventing the foreign matters from leaving the recessed portions and enabling the dustproof member 260 to more effectively prevent foreign matters from falling onto the optical filter 240 or the imaging assembly 250.

[0084] ​​​​In another example, the adhesive layer is arranged on both the convex and concave portions, i.e., the adhesive layer is arranged on the entire fourth surface 262, so that the entire fourth surface 262 can adhere to foreign matters, thereby more effectively preventing the foreign matters from falling onto the optical filter 240 or the imaging assembly 250.

[0085] The camera module 200 of the present application can adhere the foreign matters to the fourth surface 262 when the foreign matters fall onto the fourth surface 262 of the dustproof assembly, thereby preventing the foreign matters from falling onto the optical filter 240 or the imaging assembly 250 again.

[0086] It can be understood that the material of the adhesive layer can be acrylic pressure-sensitive adhesive or silicone pressure-sensitive adhesive, which is not limited in the present embodiment.

[0087] In some embodiments, referring back to Figure 5 Since the fourth surface 262 is a non-flat surface, in order to better prevent the foreign matters from falling onto the optical filter 240 or the imaging assembly 250, the lens barrel 211 has a barrier portion 211a protruding towards the base 230 at the end close to the base 230, and the barrier portion 211a corresponds to the concave portion of the fourth surface 262. In this way, the barrier portion 211a and the concave portion can cooperate to reduce the distance between the end of the lens barrel 211 close to the base 230 and the fourth surface 262 of the dustproof member 260, thereby better preventing the foreign matters from falling onto the optical filter 240 or the imaging assembly 250.

[0088] It can be understood that the barrier portion 211a and the lens barrel 211 can be separately arranged or integrally formed, which is not limited in the present embodiment.

[0089] Optionally, referring back to Figure 11 The barrier portion 211a at least partially extends into the corresponding concave portion, and the barrier portion 211a and the concave portion have a distance in the optical axis direction O. By at least partially extending into the corresponding concave portion, the barrier portion 211a can reduce the distance between the end of the lens barrel 211 close to the base 230 and the fourth surface 262 of the dustproof member 260, thereby better preventing the foreign matters from falling onto the optical filter 240 or the imaging assembly 250.

[0090] In addition, when the lens barrel 211 moves to the position closest to the optical filter 240 during the driving of the lens barrel 211 by the driving device 220, the barrier portion 211a and the concave portion still have a distance, which can avoid the collision between the barrier portion 211a and the dustproof member 260, thereby preventing the damage of the lens barrel 211 or the dustproof member 260.

[0091] It can be understood that the cross-sectional shape of the barrier portion 211a along the radial direction of the lens assembly 210 can match the cross-sectional shape of the recess portion along the radial direction of the lens assembly 210, so that the barrier portion 211a and the recess portion can be as close as possible in the radial direction, thereby better blocking foreign matter from falling onto the filter 240 or the imaging assembly 250.

[0092] For example, when the cross-sectional shape of the recess portion of the fourth surface 262 along the radial direction of the lens assembly 210 is triangular, that is, the plurality of recesses and protrusions make the fourth surface 262 form a jagged surface, the cross-sectional shape of the barrier portion 211a along the radial direction of the lens assembly 210 is also triangular, that is, the barrier portion 211a is designed as a sharp end in the direction close to the fourth surface 262, so that the barrier portion 211a can better extend into the recessed portion of the fourth surface 262, thereby better blocking foreign matter from falling onto the filter 240 or the imaging assembly 250.

[0093] Please refer to Figure 11 , ​ is a structural schematic diagram of an electronic device disclosed in the embodiments of the present application. In a second aspect, the present application further discloses an electronic device 300 comprising the camera module 200 of the first aspect.

[0094] It can be understood that the electronic device 300 can be a mobile phone, a tablet computer, or the like. The camera module 200 is assembled in the interior of the electronic device 300, and the electronic device 300 realizes the conversion between optical signals and electrical signals through the camera module 200, realizes recording and saving image information, and thus realizes the functions of photographing and filming.

[0095] In the embodiments of the present application, the camera module 200 can have the same structure as any one of the camera modules 200 in the above embodiments and can bring the same or similar beneficial effects. For details, please refer to the description in the above embodiments, which will not be repeated here.

[0096] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A camera module, comprising: The camera module comprises: a lens assembly; a driving device connected with the lens assembly to drive the lens assembly to move along an optical axis direction; a base provided on an image side of the lens assembly, the base being provided with a receiving groove open along the optical axis direction; a filter provided in the receiving groove, a gap being formed between an outer peripheral wall of the filter and an inner wall surface of the receiving groove; an imaging assembly at least partially provided in the receiving groove and located on a light exit side of the filter; and a dustproof member located on the filter, the dustproof member being connected with the filter and the base to cover the gap.

2. The camera module according to claim 1, wherein: the base has a first surface close to the lens assembly and a second surface opposite to the first surface, the receiving groove has a first opening located on the first surface and a second opening located on the second surface; the filter comprises a light entrance surface and a light exit surface opposite to each other along the optical axis direction, the light entrance surface is flush with the first surface to cover the first opening, the imaging assembly is spaced apart from the light exit surface, and the imaging assembly covers the second opening; the dustproof member is located on the first surface and the light entrance surface, and the dustproof member is connected with the first surface and the light entrance surface.

3. The camera module of claim 2, wherein, the dustproof member is configured as a dustproof ring, a ring-shaped hollow part of the dustproof member is provided corresponding to a middle part of the filter, a distance between an inner ring surface of the dustproof member and an outer ring surface of the dustproof member is greater than a width of the gap in a radial direction of the lens assembly.

4. The camera module of claim 1, wherein, the dustproof member comprises a third surface and a fourth surface opposite to each other along the optical axis direction, the third surface is connected with the base and the filter, the fourth surface is provided close to the lens assembly, and the fourth surface is configured as a non-flat surface.

5. The camera module of claim 4, wherein, the dustproof member has a plurality of protruding parts and recessed parts, the protruding parts and the recessed parts are connected to form the fourth surface as a non-flat surface.

6. The camera module of claim 5, wherein, the protruding parts and / or the recessed parts are provided with an adhesive layer configured to bond foreign matters.

7. The camera module of claim 5, wherein, the lens assembly comprises a lens barrel and a lens provided in the lens barrel, one end of the lens barrel close to the base is provided with a barrier part protruding towards the base, the barrier part is provided corresponding to the recessed part of the fourth surface.

8. The camera module of claim 7, wherein, the barrier part at least partially extends into the corresponding recessed part, and a distance is formed between the barrier part and the recessed part along the optical axis direction.

9. The camera module of any one of claims 1-8, wherein, the receiving groove comprises a first groove body and a second groove body provided in sequence along the optical axis direction, the first groove body and the second groove body are communicated, the first groove body is provided close to the lens assembly, the filter is located in the first groove body, and the imaging assembly is at least partially located in the second groove body.

10. An electronic device, comprising: a camera module as claimed in any one of claims 1-9.

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