Camera module and electronic equipment

Abstract

The utility model provides a camera module and electronic equipment, relates to the technical field of electronic equipment, and is used for solving the problem that foreign matters such as dust easily enter an imaging area of an existing zoom camera module. The camera module provided by the utility model comprises a photosensitive chip, a driving motor, a lens and a shielding assembly. Wherein the photosensitive chip is provided with a photosensitive surface; the driving motor comprises a shell and a carrier, and the carrier is movably arranged in the shell. The lens is at least partially arranged in the shell and connected with the carrier, and the light-emitting surface of the lens faces the light-sensing surface of the light-sensing chip. The shielding assembly is arranged between the shell and the lens, a gap is formed between the lens and the shell on the section perpendicular to the central axis of the camera module, and the shielding assembly covers at least partial area of the gap. According to the camera module provided by the invention, the probability that foreign matters such as dust fall into the photosensitive surface of the photosensitive chip along the gap between the lens and the shell can be reduced, so that the risk that black shadows appear in a picture shot by the camera module can be reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electrical equipment, and in particular to a camera module and an electronic device. Background Art

[0002] As people's demand for electronic devices (such as mobile phones, tablet computers, smart watches, etc.) grows year by year, electronic devices have more functions. For example, electronic devices generally have a photography function, and the realization of this function is based on a camera module.

[0003] With the development of photography and video technology, zoom camera modules are widely used in electronic devices because of their adjustable focal length and adaptability to a variety of shooting scenes. However, foreign objects such as dust are easily introduced into the imaging area of ​​the zoom camera module, resulting in black shadows in the shooting picture, affecting the shooting effect. Utility Model Content

[0004] The embodiments of the present application provide a camera module and an electronic device for solving the problem that dust and other foreign objects are easily introduced into the imaging area of ​​the existing variable-focus camera module, resulting in black shadows appearing in the captured image.

[0005] In order to achieve the above purpose, the embodiment of the present application adopts the following technical solution:

[0006] In a first aspect, an embodiment of the present application provides a camera module, which includes a photosensitive chip, a drive motor, a lens, and a shielding component.

[0007] The photosensitive chip has a photosensitive surface. The driving motor includes a housing and a carrier, and the carrier is movably arranged in the housing. The lens is at least partially arranged in the housing and connected to the carrier, and the light-emitting surface of the lens faces the photosensitive surface of the photosensitive chip. The shielding component is arranged between the housing and the lens, and there is a gap between the lens and the housing on a cross section perpendicular to the central axis of the camera module, and the shielding component covers at least a part of the gap.

[0008] The camera module provided in the first aspect of the present application can reduce the probability of foreign matter such as dust falling onto the photosensitive surface of the photosensitive chip along the gap between the lens and the shell (equivalent to at least part of the dust and other foreign matter falling on the shielding component and being blocked by the shielding component) by arranging a shielding component between the shell and the lens, and enabling the shielding component to cover at least part of the gap between the lens and the shell, thereby reducing the risk of black shadows appearing in the pictures taken by the camera module.

[0009] In combination with the first aspect, in a possible implementation, in a cross section perpendicular to the central axis of the camera module, the shielding component covers at least 30% of the gap between the lens and the housing. This arrangement can reduce the probability of foreign matter such as dust falling onto the photosensitive surface of the photosensitive chip along the gap between the lens and the housing to a certain extent.

[0010] In combination with the first aspect, in another possible implementation, on a cross section perpendicular to the central axis of the camera module, the shielding component completely covers the gap between the lens and the shell. It is understandable that the sources of foreign matter such as dust that falls onto the photosensitive surface along the gap between the lens and the shell mainly include two parts, the first part is foreign matter such as dust that enters from the outside during the use of the camera module, and the second part is foreign matter such as dust that is generated or originally exists inside the drive motor. By completely covering the gap between the lens and the shell with the shielding component, at least all paths of foreign matter such as dust that enters from the outside along the gap between the lens and the shell falling onto the photosensitive surface can be completely blocked, thereby greatly reducing the risk of black shadows appearing in the picture taken by the camera module.

[0011] In combination with the first aspect, in another possible implementation, the housing has a first wall plate and a second wall plate arranged opposite to each other, the first wall plate is provided with a first mounting hole, the second wall plate is provided with a second mounting hole, the light entrance surface of the lens is arranged at the first mounting hole, and the light exit surface of the lens is arranged at the second mounting hole; the shielding component is arranged between the second wall plate and the lens. Since there are gaps between the lens and the first mounting hole and the second mounting hole respectively, foreign matter such as dust from the outside will enter the housing through the gap between the first mounting hole and the lens, therefore, by arranging the shielding component between the second wall plate and the lens, at least a part of the foreign matter such as dust can be prevented from falling onto the photosensitive surface through the gap between the second mounting hole and the lens. In addition, by arranging the shielding component between the second wall plate and the lens, at least a part of the foreign matter such as dust originally existing inside the drive motor (for example, dust left inside the drive motor during assembly, etc.), and at least a part of the foreign matter such as dust generated inside the drive motor (for example, debris, particles, etc. generated by friction and collision between certain components inside the drive motor) can be prevented from falling onto the photosensitive surface of the photosensitive chip along the gap between the lens and the second mounting hole.

[0012] In combination with the first aspect, in another possible implementation, the shielding assembly is disposed between the inner wall of the second mounting hole and the outer wall of the lens. In this configuration, the shielding assembly does not protrude from the outer wall of the drive motor housing, facilitating the connection between the second wall plate of the housing and other components in the camera module. Furthermore, the shielding assembly does not increase the volume of the camera module, facilitating the arrangement and installation of the camera module in a limited space of the electronic device.

[0013] In combination with the first aspect, in another possible implementation, the shielding assembly is a shielding member, and in a cross section perpendicular to a central axis of the camera module, the shielding member extends along a gap between the lens and the housing.

[0014] In combination with the first aspect, in another possible implementation, the shielding assembly includes a plurality of shielding members, and in a cross section perpendicular to the central axis of the camera module, the plurality of shielding members are arranged around the central axis of the camera module.

[0015] In combination with the first aspect, in another possible implementation, the plurality of shielding members include a first shielding member and a second shielding member, and the first shielding member and the second shielding member are spaced apart around a central axis of the camera module.

[0016] In combination with the first aspect, in another possible implementation, the first shielding member and the second shielding member are centrally symmetrically arranged about the central axis of the camera module. With this arrangement, it is possible to avoid deflection due to unbalanced force on the lens. For example, the first shielding member and the second shielding member are respectively connected to the lens and the housing, and can be extended and retracted as the lens moves. When the lens moves along the central axis of the camera module to focus, the reaction forces (i.e., elastic forces) of the first shielding member and the second shielding member on the lens are also symmetrical about the central axis of the camera module. In other words, the torque generated by the elastic force of the first shielding member on the center of mass of the lens and the torque generated by the elastic force of the second shielding member on the center of mass of the lens are equal in magnitude and opposite in direction, and can offset each other, thereby not causing the lens to deflect.

[0017] In combination with the first aspect, in another possible implementation, the plurality of shielding members include a third shielding member, a fourth shielding member, and a fifth shielding member, and the third shielding member, the fourth shielding member, and the fifth shielding member are spaced apart around the central axis of the camera module.

[0018] In combination with the first aspect, in another possible implementation, the third shielding member, the fourth shielding member and the fifth shielding member are arranged at equal intervals around the central axis of the camera module. This arrangement is conducive to balancing the force on the lens and can prevent the lens from deflecting due to unbalanced force.

[0019] In combination with the first aspect, in another possible implementation, the shielding component is a colloid, and the colloid is filled in the gap between the housing and the lens. That is, the colloid is bonded to the housing and the lens respectively, so that the colloid can not only block at least part of foreign matter such as dust, but also has elasticity, that is, the colloid can expand and contract with the movement of the lens, thereby avoiding affecting the movement and focus of the lens.

[0020] In combination with the first aspect, in another possible implementation, the stretching rate of the colloid is 500% to 1000%. Thus, the stretching rate of the colloid is relatively high, and the colloid is not likely to break during the lens movement and focusing process, and the colloid will not affect the movement and focusing stroke of the lens.

[0021] In combination with the first aspect, in another possible implementation, the viscosity of the colloid is 15000-45000 mPa.s. As a result, the viscosity of the colloid is relatively high, and its bonding force is also relatively large, so it is not easy to fall off after bonding with the housing and the lens. In addition, the high viscosity of the colloid also means that its fluidity is relatively low, thereby preventing the colloid from flowing along the gap between the lens and the housing to other components in the drive motor during the application of glue.

[0022] In combination with the first aspect, in another possible implementation, the shielding component is an elastic sheet, and the elastic sheet is connected to the housing and the lens respectively. In this way, the elastic sheet can be extended and retracted with the movement of the lens, thereby avoiding affecting the movement and focus of the lens.

[0023] In a second aspect, the present application provides an electronic device, which includes a housing, a mainboard, and the camera module of the first aspect, wherein the mainboard and the camera module are both arranged in the housing, and the camera module is electrically connected to the mainboard.

[0024] It can be understood that the beneficial effects that can be achieved by the electronic device described in the second aspect and any possible implementation thereof provided above can refer to the beneficial effects in the first aspect and any possible implementation thereof, and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic diagram of the overall structure of an electronic device provided in an embodiment of the present application;

[0026] Figure 2 for Figure 1 Structural explosion diagram of electronic equipment;

[0027] Figure 3 A schematic diagram of the overall structure of a camera module provided in an embodiment of the present application;

[0028] Figure 4 for Figure 3 The structural explosion diagram of the camera module in the middle;

[0029] Figure 5 This is a schematic diagram of dust and other foreign objects outside the camera module falling into the photosensitive surface through the gap;

[0030] Figure 6 An exploded view of the structure of another camera module provided in an embodiment of the present application;

[0031] Figure 7 A schematic cross-sectional view of a partial area of ​​the first gap covered by the shielding component;

[0032] Figure 8 for Figure 7 A top view of

[0033] Fig. 9 A schematic cross-sectional view of a partial area of ​​the second gap covered by the shielding component;

[0034] Fig.10 for Fig. 9 Cross-sectional view at AA in the middle;

[0035] Fig.11 A cross-sectional schematic diagram of another camera module provided in an embodiment of the present application;

[0036] Fig.12 for Fig.11 Schematic diagram of the carrier driving the lens to move and focus;

[0037] Fig.13 It is a cross-sectional schematic diagram showing that the shielding component is arranged between the second wall plate and the lens;

[0038] Fig.14 for Fig.13 A partial enlarged view of point B in the middle;

[0039] Fig.15 A schematic diagram showing a partial area of ​​the third gap covered by a shielding member;

[0040] Fig.16 A schematic diagram showing that the shielding member completely covers the third gap;

[0041] Fig.17 A schematic diagram of a partial area of ​​the third gap covered by the first shielding member and the second shielding member;

[0042] Fig.18 A schematic diagram of the reaction force exerted on the lens when the first shielding member and the second shielding member are stretched and deformed;

[0043] Fig.19 A schematic diagram showing a partial area of ​​the third gap covered by the third shielding member, the fourth shielding member and the fifth shielding member;

[0044] Fig. 20 A cross-sectional schematic diagram of another camera module provided in an embodiment of the present application;

[0045] Fig.21 An exploded view of the structure of another camera module provided in an embodiment of the present application;

[0046] Fig. 22 for Fig.21 Schematic diagram of the cross section of the camera module.

[0047] Reference numerals:

[0048] 01. electronic device; 10. display module; 11. light-transmitting cover plate; 12. display screen; 20. housing; 21. back cover; 22. frame; 23. middle plate; 30. camera module; 30a. central axis; 31. substrate; 32. photosensitive chip; 32a. photosensitive surface; 33. flexible connector; 34. drive motor; 340. accommodating cavity; 341. housing; 341a. first mounting hole; 341b. second mounting hole; 3411. first wall plate; 3412. second wall plate; 3413. third wall plate; 3414, fourth wall panel; 342, carrier; 35, lens; 36, shielding assembly; 360, shielding member; 361, first shielding member; 362, second shielding member; 363, third shielding member; 364, fourth shielding member; 365, fifth shielding member; 37, filter; 38, bracket; 39, limit assembly; 391, first limit block; 392, second limit block; 40, main board; 50, camera decorative cover; 100, gap; 101, first gap; 102, second gap; 103, third gap. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the application more clear, the present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0050] In the description of the present application, it should be clarified that the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "horizontal" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application, and do not mean that the devices or elements referred to must have a specific direction or position, and therefore cannot be understood as limiting the present application. The "quantity" mentioned above cannot be understood as limiting the present application.

[0051] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] The embodiment of the present application provides an electronic device 01. Specifically, the electronic device 01 may be a portable electronic device or other types of electronic devices. For example, the electronic device 01 may be a mobile phone, a tablet personal computer, a laptop computer, a personal digital assistant (PDA), a monitor, a camera, a personal computer, a notebook computer, a wearable device, etc. For the convenience of explanation, the following examples are all taken as an example in which the electronic device 01 is a mobile phone.

[0053] See also Figure 1 and Figure 2 As shown, Figure 1 This is a schematic diagram of the overall structure of the electronic device 01 provided in the embodiment of the present application. Figure 2 For the above Figure 1 Exploded diagram of the structure of the electronic device 01. As can be seen from the above, in this embodiment, the electronic device 01 is a mobile phone, and the electronic device 01 can be in an approximately rectangular plate-shaped structure. The electronic device 01 can include a display module 10, a housing 20, a camera module 30, a mainboard 40 and a camera decorative cover 50.

[0054] For the convenience of the following description, an XYZ coordinate system is established, and the width direction of the electronic device 01 is defined as the X-axis direction, the length direction of the electronic device 01 is defined as the Y-axis direction, and the thickness direction of the electronic device 01 is defined as the Z-axis direction. Therefore, this application does not make any special restrictions on this. It can be understood that Figure 1 and Figure 2 Only some components of the electronic device 01 are schematically shown, and the actual shapes, sizes, positions and structures of these components are not subject to the present invention. Figure 1 and Figure 2 In some other examples, the electronic device 01 may not include the camera decorative cover 50.

[0055] The above-mentioned display module 10 is used to display images, videos, etc. The display module 10 may include a transparent cover plate 11 and a display screen 12 (English name: panel 1, also called a display panel), and the transparent cover plate 11 and the display screen 12 are stacked. The material of the transparent cover plate 11 includes but is not limited to glass. For example, the transparent cover plate 11 can adopt an ordinary transparent cover plate to protect the display screen to avoid damage to the display screen due to external force, and it can play a dust-proof role. Alternatively, the transparent cover plate 11 can also adopt a transparent cover plate with a touch function, so that the electronic device 01 has a touch function, which makes it more convenient for users to use. Therefore, the present application does not specifically limit the specific material of the transparent cover plate 11.

[0056] In addition, the display screen 12 may be a flexible display screen or a rigid display screen. For example, the display screen 12 may be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a micro organic light-emitting diode display screen, a quantum dot light-emitting diode (QLED) display screen, or a liquid crystal display (LCD).

[0057] The housing 20 is used to protect the electronic components inside the electronic device 01. The housing 20 may include a back cover 21 and a frame 22. The back cover 21 is located on the side of the display screen 12 away from the light-transmitting cover plate 11, and is stacked with the light-transmitting cover plate 11 and the display screen 12. The frame 22 is located between the light-transmitting cover plate 11 and the back cover 21. The frame 22 is fixed to the back cover 21. For example, the frame 22 may be fixed to the back cover 21 by bonding, threading, welding, snapping, etc.; or, the frame 22 may also be an integrally formed structure with the back cover 21, that is, the frame 22 and the back cover 21 form a structural component as a whole. The light-transmitting cover plate 11 may be fixed to the frame 22 by gluing, so that the light-transmitting cover plate 11, the back cover 21 and the frame 22 enclose a receiving cavity inside the electronic device 01, and the display screen 12, the main board 40 and the camera module 30 are all arranged in the internal receiving space.

[0058] In some embodiments, the housing 20 may further include a middle plate 23, which is disposed in the accommodating cavity, and the middle plate 23 is located on the side of the display screen 12 away from the light-transmitting cover plate 11. The middle plate 23 is fixedly connected to the frame 22 to form the middle frame of the electronic device 01. For example, the middle plate 23 and the frame 22 may be fixedly connected by gluing, threading, welding, snapping, etc.; or, the middle plate 23 and the frame 22 may also be an integrally formed structure, that is, the middle plate 23 and the frame 22 form a structural component as a whole. The middle plate 23 divides the accommodating cavity into two independent spaces, one of which is located between the light-transmitting cover plate 11 and the middle plate 23, and the display screen 12 is located in the space. The other space is located between the middle plate 23 and the back cover 21, and the main board 40 and the camera module 30 are both disposed in the space.

[0059] The mainboard 40 is used to set the electronic components of the electronic device 01 and realize the electrical connection between the electronic components. For example, the electronic components can be a control chip (such as a system on chip, SOC), a graphics processing unit (GPU), a universal flash storage (UFS), an earpiece, a flash module, and the camera module 30.

[0060] The camera module 30 is used to realize video or image shooting and can realize auto focus (AF, AutoFocus), so it can be applied to various shooting scenes. Figure 1 As shown, the camera module 30 is arranged near a side edge of the rear cover 21. Alternatively, the camera module 30 may be located at a middle position of the upper portion of the rear cover 21 (not shown in the figure). Therefore, the specific position of the camera module 30 is not particularly limited in this application.

[0061] See also Figure 3 and Figure 4 As shown, Figure 3 This is a schematic diagram of the overall structure of a camera module 30 provided in an embodiment of the present application. Figure 4 for Figure 3 An exploded diagram of the structure of the camera module 30.

[0062] Specifically, the camera module 30 may include a substrate 31, a photosensitive chip 32, a driving motor 34 and a lens 35. The driving motor 34 is fixed on the substrate 31 and electrically connected to the substrate 31. The photosensitive chip 32 is arranged on the substrate 31 and is located between the substrate 31 and the driving motor 34. The photosensitive chip 32 has a photosensitive surface 32a. The lens 35 is arranged on the driving motor 34, and the driving motor 34 is used to drive the lens 35 to move along the central axis 30a of the camera module 30 to adjust the distance between the lens 35 and the photosensitive surface 32a of the photosensitive chip 32, so as to achieve focusing.

[0063] The camera module 30 has a light incident surface and a light emitting surface. The light incident surface may be the light incident surface of the lens 35 inside the camera module 30, and the light emitting surface may be the light emitting surface of the lens 35 inside the camera module 30. The light incident surface of the lens 35 faces the back cover 21, and the light emitting surface of the lens 35 faces the light sensitive surface 32a of the light sensitive chip 32. The back cover 21 is provided with a mounting notch (not shown in the figure). The camera decorative cover 50 (as shown in FIG. Figure 2 The camera decorative cover 50 is fixed in the installation notch, and the camera decorative cover 50 has a light-transmitting window. The light-entering surface of the lens 35 is opposite to the light-transmitting window, so that the external light can pass through the light-transmitting window, enter the lens 35 from the light-entering surface, and then be emitted from the light-emitting surface of the lens 35 to illuminate the light-sensitive surface 32a of the light-sensitive chip 32. The light-sensitive chip 32 then converts the received light signal into a digital signal, outputs it to the digital signal processor (DSP, Digital Signal Processing) for image signal enhancement and compression optimization, and finally transmits it to Figure 2 An image is displayed on the display screen 12 shown.

[0064] Please continue to see Figure 4 As shown, the camera module 30 may further include a flexible connector 33, through which the camera module 30 is electrically connected to the mainboard 40. For example, the flexible connector 33 may be an FPC board (Flexible Printed Circuit). One end of the flexible connector 33 is electrically connected to the substrate 31, and the other end of the flexible connector 33 is used to be electrically connected to the mainboard 40.

[0065] It should be noted that the central axis 30a of the camera module 30 can be parallel to the thickness direction (i.e., the Z-axis direction) of the electronic device 01, the distribution direction of the substrate 31 and the flexible connector 33 of the camera module 30 can be parallel to the width direction (i.e., the X-axis direction) of the electronic device 01, and the direction perpendicular to the above two directions in the camera module 30 is parallel to the length direction (i.e., the Y-axis direction) of the electronic device 01. It can be understood that the arrangement of the camera module 30 is only an example, that is, the camera module 30 can also be arranged in the housing 20 of the electronic device 01 in other ways. And, in general, the central axis 30a of the camera module 30 can be used as the axis of the drive motor 34, and can also be used as the optical axis of the lens 35.

[0066] On the basis of the above, the driving motor 34 may include a shell 341 and a carrier 342. A housing cavity 340 is formed in the shell 341. The carrier 342 is movably arranged in the housing cavity 340 and can reciprocate along the central axis 30a of the camera module 30. For example, a magnet (not shown in the figure) is fixed on the inner wall of the housing cavity 340 in the shell 341, and a coil (not shown in the figure) is wound on the carrier 342. When direct current is passed through the coil, the coil is subjected to electromagnetic force in the magnetic field generated by the magnet and drives the carrier 342 to move (the direction of the force on the coil is determined according to the left-hand rule). By controlling the magnitude and direction of the current, the magnitude and direction of the electromagnetic force on the coil are changed, thereby controlling the position of the coil and the carrier 342.

[0067] The lens 35 is connected to the carrier 342 , and the carrier 342 drives the lens 35 to move along the central axis 30 a of the camera module 30 , thereby adjusting the distance between the light emitting surface of the lens 35 and the light sensitive surface 32 a of the light sensitive chip 32 , thereby achieving focusing.

[0068] It is understandable that when the lens 35 is in the initial position, the lens 35 may be completely located in the accommodating cavity 340, or may be partially located in the accommodating cavity 340, and the present application does not specifically limit this. For example, the light incident surface of the lens 35 extends out of the housing 341, and the light emitting surface of the lens 35 is located in the housing 341. Alternatively, the light incident surface of the lens 35 is located in the housing 341, and the light emitting surface of the lens 35 extends out of the housing 341. Alternatively, both the light incident surface and the light emitting surface of the lens 35 extend out of the housing 341.

[0069] However, the above-mentioned lens 35 and driving motor 34 are two independently manufactured components. In order to facilitate the assembly of the lens 35 on the driving motor 34 and prevent the lens 35 from generating friction with the housing 341 of the driving motor 34 when moving for focusing, a certain distance is maintained between the outer wall of the lens 35 and the housing 341 of the driving motor 34, that is, on a cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), there is an annular gap 100 between the outer wall of the lens 35 and the housing 341 of the driving motor 34. This causes foreign matter such as dust from the outside to enter the imaging area of ​​the camera module 30 (for example, on the photosensitive surface 32a of the photosensitive chip 32) along the gap 100 between the housing 341 and the lens 35, resulting in a black shadow in the captured image, affecting the shooting effect.

[0070] For example, see Figure 5 As shown, Figure 5 Schematic diagram of dust and other foreign objects outside the camera module 30 falling onto the photosensitive surface 32a along the gap 100. The shell 341 is square, and the shell 341 includes a first wall plate 3411 and a second wall plate 3412 parallel to the XY plane, a third wall plate 3413 and a fourth wall plate 3414 parallel to the YZ plane, and a fifth wall plate (not shown in the figure) and a sixth wall plate (not shown in the figure) parallel to the XZ plane. The first wall plate 3411, the second wall plate 3412, the third wall plate 3413, the fourth wall plate 3414, the fifth wall plate and the sixth wall plate are arranged to form a receiving chamber 340. The carrier 342 is arranged in the receiving chamber 340, and the lens 35 is mounted on the carrier 342.

[0071] A first mounting hole 341a is provided on the first wall plate 3411, and the first mounting hole 341a penetrates the first wall plate 3411 along the central axis 30a of the camera module 30. A second mounting hole 341b is provided on the second wall plate 3412, and the second mounting hole 341b penetrates the second wall plate 3412 along the central axis 30a of the camera module 30. The light incident surface of the lens 35 is provided at the first mounting hole 341a, and the light exit surface of the lens 35 is provided at the second mounting hole 341b.

[0072] The gap 100 includes a first gap 101 formed between the outer wall of the lens 35 and the inner wall of the first mounting hole 341a, a second gap 102 formed between the outer wall of the lens 35 and the inner wall of the accommodating cavity 340, and a third gap 103 formed between the outer wall of the lens 35 and the inner wall of the second mounting hole 341b. On a cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), the first gap 101, the second gap 102 and the third gap 103 are all annular and are connected in sequence.

[0073] At this time, dust and other foreign matter outside the camera module 30 may enter the housing 341 along the first gap 101, and then enter the imaging area of ​​the camera module 30 through the second gap 102 and the third gap 103 in sequence ( Figure 5 The path shown by the dotted curve in the middle), for example, on the photosensitive surface 32a of the photosensitive chip 32, causes a black shadow to appear in the shooting picture, affecting the shooting effect.

[0074] To solve the above problems, the present application embodiment provides another camera module 30, see Figure 6 As shown, Figure 6 This is an exploded view of the structure of another camera module 30 provided in an embodiment of the present application. The camera module 30 can be applied to the above-mentioned electronic device.

[0075] The camera module 30 may include the substrate 31, the photosensitive chip 32, the flexible connector 33, the drive motor 34 and the lens 35. In addition, a shielding component 36 is provided between the lens 35 and the housing 341 of the drive motor 34, so that the shielding component 36 can cover at least part of the gap 100 between the lens 35 and the housing 341 on a cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane).

[0076] It is understandable that the shielding assembly 36 can be set on the lens 35, can also be set on the housing 341, and can also be connected between the lens 35 and the housing 341, and the present application does not make any special limitation on this.

[0077] In addition, on a cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), the shielding component 36 can cover a portion of the gap 100, and to ensure that the shielding component 36 can play a certain blocking effect, the shielding component 36 needs to cover at least 30% of the gap 100, such as 50%, 60%, 80%, etc. Alternatively, the shielding component 36 can also completely cover the gap 100.

[0078] For example, see Figure 7 , Figure 8 As shown, Figure 7 Schematic diagram of a cross section (parallel to the YZ plane) of a partial area of ​​the first gap 101 covered by the shielding component 36. Figure 8 for Figure 7 The shielding component 36 is annular and is disposed on the inner wall of the first mounting hole 341a on the first wall plate 3411. In the cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), the shielding component 36 covers 50% of the first gap 101.

[0079] At this time, when dust and other foreign objects outside the camera module 30 fall along the Z-axis direction, part of the dust and other foreign objects will fall on the shielding component 36 and be blocked by the shielding component 36 (equivalent to the shielding component 36 reducing the cross-sectional width of the first gap 101), thereby reducing the probability of dust and other foreign objects outside the camera module 30 falling onto the photosensitive surface 32a of the photosensitive chip 32, thereby reducing the risk of black shadows appearing in the picture taken by the camera module 30.

[0080] For another example, see Fig. 9 , Fig.10 As shown, Fig. 9 Schematic diagram of a cross section (parallel to the YZ plane) of a partial area of ​​the second gap 102 covered by the shielding component 36. Fig.10 for Fig. 9 The shielding component 36 is also annular, arranged on the outer wall of the lens 35, and is located in the accommodating cavity 340. In the cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), the shielding component 36 covers 30% of the second gap 102.

[0081] At this time, even if dust and other foreign objects outside the camera module 30 fall along the Z-axis direction and enter the shell 341 through the first gap 101, some of the dust and other foreign objects will fall on the shielding component 36 and be blocked by the shielding component 36 (equivalent to the shielding component 36 reducing the cross-sectional width of the second gap 102), thereby reducing the probability of dust and other foreign objects outside the camera module 30 falling onto the photosensitive surface 32a of the photosensitive chip 32, thereby reducing the risk of black shadows appearing in the picture taken by the camera module 30.

[0082] In some embodiments, the shielding component 36 may be a colloid, which fills the gap 100. It should be noted that the colloid may be a damping glue, UV glue (Ultraviolet Rays, ultraviolet curing glue), sealant, etc., which have a certain elasticity after curing, and the present application does not make any special limitation on this.

[0083] In this way, the colloid is bonded to the shell 341 and the lens 35 respectively. The colloid can not only block at least part of foreign matter such as dust, but also has elasticity, that is, the colloid can expand and contract with the movement of the lens 35, thereby avoiding affecting the movement and focus of the lens 35.

[0084] On the basis of the above, in order to prevent the colloid from affecting the moving focusing stroke of the lens 35 and to prevent the colloid from being broken during the moving focusing process of the lens 35 as much as possible, the above colloid needs to have a higher elongation rate, for example, the elongation rate of the colloid is 500% to 1000%, and the present application does not make any special limitation on this.

[0085] Furthermore, the colloid needs to have a high viscosity. The high viscosity of the colloid means that it has a strong bonding force and is not easy to fall off after bonding with the housing 341 and the lens 35. In addition, the high viscosity of the colloid also means that it has a low fluidity, so that the colloid can be prevented from flowing along the gap 100 to other components in the drive motor 34 during the gluing process. For example, the viscosity of the colloid is 15000 to 45000 mPa.s, which is not specifically limited in the present application.

[0086] The setting method of the shielding component 36 in the above example can only block dust and other foreign objects outside the camera module 30, but cannot block the dust and other foreign objects originally inside the drive motor 34 (for example, dust left inside the drive motor 34 during assembly, etc.), and during the use of the camera module 30, the dust and other foreign objects generated inside the drive motor 34 (for example, debris and particles generated by friction and collision between certain components inside the drive motor 34) fall along the third gap 103 onto the photosensitive surface 32a of the photosensitive chip 32.

[0087] For example, see Fig.11 As shown, Fig.11 A schematic diagram of a cross section (parallel to the YZ plane) of another camera module 30 provided in an embodiment of the present application. The camera module 30 may further include a limit assembly, which is disposed on the carrier 342 and is used to limit the travel range of the carrier 342 and to prevent the carrier 342 from colliding with the housing 341 to produce abnormal noise.

[0088] The limiting assembly 39 includes a plurality of first limiting blocks 391 and a plurality of second limiting blocks 392. The plurality of first limiting blocks 391 are disposed on a side surface of the carrier 342 close to the first wall plate 3411 and are spaced apart along the edge of the carrier 342. The plurality of second limiting blocks 392 are disposed on a side surface of the carrier 342 close to the second wall plate 3412 and are spaced apart along the edge of the carrier 342. In addition, in a cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), the diameter of the carrier 342 is greater than the diameter of the first mounting hole 341a and the diameter of the second mounting hole 341b.

[0089] Please refer to Fig.12 As shown, Fig.12 for Fig.11 Schematic diagram of the carrier 342 driving the lens 35 to move and focus. When the carrier 342 reaches the upper limit position, as shown in FIG. Fig.12As shown in , at this time, the distance between the light-emitting surface of the lens 35 and the light-sensitive surface 32a of the light-sensitive chip 32 is the largest, and the first limit block 391 will collide with the first wall plate 3411. When the carrier 342 reaches the lower limit position, at this time, the distance between the light-emitting surface of the lens 35 and the light-sensitive surface 32a of the light-sensitive chip 32 is the smallest, and the second limit block 392 will collide with the second wall plate 3412.

[0090] Since the first limit block 391 and the second limit block 392 are generally made of plastic, and the housing 341 is generally made of metal, after multiple collisions, debris may fall from the first limit block 391 and the second limit block 392 and deposit in the housing 341. The deposited debris may fall onto the photosensitive surface 32a of the photosensitive chip 32 through the third gap 103 ( Fig.11 The path is shown by the dashed curve in the middle).

[0091] Based on the above reasons, in some embodiments, the shielding assembly 36 is disposed between the second wall plate 3412 and the lens 35 so as to cover at least a portion of the third gap 103 on a cross section perpendicular to the central axis 30 a of the camera module 30 .

[0092] Such a configuration can not only prevent at least part of the dust and other foreign matter from entering the housing 341 of the driving motor 34 from the outside of the camera module 30, and then falling onto the photosensitive surface 32a of the photosensitive chip 32 along the third gap 103. It can also prevent at least part of the dust and other foreign matter originally inside the driving motor 34 (for example, dust left inside the driving motor 34 during assembly, etc.), and at least part of the dust and other foreign matter generated inside the driving motor 34 (for example, debris and particles generated by friction and collision between certain components inside the driving motor 34) from falling onto the photosensitive surface 32a of the photosensitive chip 32 along the third gap 103.

[0093] It can be understood that the shielding component 36 can be set on the outer surface of the second wall panel 3412 (that is, the shielding component 36 is located outside the shell 341), or can be set on the inner surface of the second wall panel 3412 (that is, the shielding component 36 is located inside the shell 341), or can be set in the second mounting hole 341b on the second wall panel 3412. It is sufficient that the shielding component 36 can cover at least a partial area of ​​the third gap 103 in the cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), and the application itself does not make any special limitations on this.

[0094] For example, see Fig.13 , Fig.14 As shown, Fig.13 Schematic diagram of a cross section (parallel to the YZ plane) in which the shielding assembly 36 is disposed between the second wall plate 3412 and the lens 35. Fig.14 for Fig.13The shielding assembly 36 is disposed in the second mounting hole 341b and is connected to the inner wall of the second mounting hole 341b and the outer wall of the lens 35, respectively. In this way, the shielding assembly 36 will not protrude from the outer wall of the housing 341 of the driving motor 34, which facilitates the connection between the second wall plate 3412 of the housing 341 and other components in the camera module 30. In addition, the shielding assembly 36 will not increase the volume of the camera module 30, which is conducive to the arrangement and installation of the camera module 30 in the limited space of the electronic device 01.

[0095] In addition, when the shielding component 36 completely covers the third gap 103, the shielding component 36 can completely block all paths of foreign matter such as dust outside the camera module 30 and original or newly generated dust inside the driving motor 34 from falling onto the photosensitive surface 32a along the gap 100, thereby greatly reducing the risk of black shadows appearing in the picture taken by the camera module 30.

[0096] In some embodiments, the shielding component 36 may be a shielding member 360 , and the shielding member 360 extends along the gap 100 in a cross section perpendicular to the central axis 30 a of the camera module 30 (parallel to the XY plane).

[0097] For example, see Fig.15 As shown, Fig.15 Schematic diagram of a shielding member 360 covering a portion of the third gap 103. The shielding assembly 36 is a shielding member 360. On a cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), the shielding member 360 is disposed in the third gap 103 and is connected to the outer wall of the lens 35 and the inner wall of the second mounting hole 341b, respectively. At the same time, the shielding member is disposed along the third gap 103 around the central axis 30a ( Fig.15 The middle black dot D) extends along the third gap 103 , covering 50% of the third gap 103 .

[0098] For another example, see Fig.16 As shown, Fig.16 30a. The shielding member 360 is disposed in the third gap 103 and surrounds the central axis 30a ( Fig.16 The middle black dot D) extends around and completely covers the third gap 103. At this time, whether it is dust or other foreign matter entering the housing 341 from the outside through the first gap 101, or dust or other foreign matter generated or existing in the housing 341, they can no longer fall onto the photosensitive surface 32a of the photosensitive chip 32 through the third gap 103, and will be completely blocked by the shielding member 360.

[0099] In other embodiments, the shielding assembly 36 may also include a plurality of shielding members 360 , and the plurality of shielding members 360 are arranged around the central axis 30 a of the camera module 30 in a cross section perpendicular to the central axis 30 a of the camera module 30 (parallel to the XY plane).

[0100] In which, when multiple shielding members cover a partial area of ​​the gap between the lens 35 and the housing 341, multiple shielding members 360 can be arranged at intervals, and two adjacent shielding members 360 can also be connected to each other, and the present application does not make any special limitation on this.

[0101] Furthermore, in order to prevent the reaction force of each shielding member 360 on the lens 35 from causing the lens 35 to be unbalanced and deflected when the lens 35 moves to focus and drives the multiple shielding members to extend and retract, the multiple shielding members 360 are arranged at equal intervals around the central axis 30a of the camera module 30.

[0102] For example, see Fig.17 As shown, Fig.17 Schematic diagram of a first shielding member 361 and a second shielding member 362 covering a portion of the third gap 103. The shielding assembly 36 includes two shielding members 360, the two shielding members 360 are respectively a first shielding member 361 and a second shielding member 362, and the first shielding member 361 and the second shielding member 362 are both disposed in the third gap 103. In addition, the first shielding member 361 is respectively connected to the outer wall of the lens 35 and the inner wall of the second mounting hole 341b, and the second shielding member 362 is respectively connected to the outer wall of the lens 35 and the inner wall of the second mounting hole 341b, and the first shielding member 361 and the second shielding member 362 are respectively connected to the outer wall of the lens 35 and the inner wall of the second mounting hole 341b, and the first shielding member 361 and the second shielding member 362 are respectively connected to the central axis 30a ( Fig.17 The black dots D) are arranged symmetrically with respect to the center.

[0103] In a cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), the first shielding member 361 and the second shielding member 362 respectively occupy 25% of the third gap 103 , and the first shielding member 361 and the second shielding member 362 together cover 50% of the third gap 103 .

[0104] In this way, when the first shielding member 361 and the second shielding member 362 have the same structure and material, see Fig.18 As shown, Fig.18Schematic diagram of the reaction force on the lens 35 when the first shielding member 361 and the second shielding member 362 are stretched and deformed. When the lens 35 moves along the central axis 30a of the camera module 30 to focus, driving the first shielding member 361 and the second shielding member 362 to stretch and deform, the deformation of the first shielding member 361 and the second shielding member 362 are the same, and the reaction force F1 of the first shielding member 361 and the reaction force F2 of the second shielding member 362 on the lens 35 are equal. Since the first shielding member 361 and the second shielding member 362 are centrally symmetrically arranged with respect to the central axis 30a of the camera module 30, F1 and F2 are relative to the center of mass of the lens 35 ( Fig.18 The moments M1 and M2 generated by the black dot C) are also equal in magnitude and opposite in direction, and can cancel each other out. Therefore, the reaction force F1 of the first shielding member 361 and the reaction force F2 of the second shielding member 362 will not cause the lens 35 to deflect.

[0105] For example, see Fig.19 As shown, Fig.19 Schematic diagram of a portion of the third gap 103 covered by the third shielding member 363, the fourth shielding member 364 and the fifth shielding member 365. The shielding assembly 36 includes three shielding members 360, which are respectively the third shielding member 363, the fourth shielding member 364 and the fifth shielding member 365. The third shielding member 363, the fourth shielding member 364 and the fifth shielding member 365 are all arranged in the third gap 103 and are respectively connected to the outer wall of the lens 35 and the inner wall of the second mounting hole 341b. The third shielding member 363, the fourth shielding member 364 and the fifth shielding member 365 are arranged around the central axis 30a ( Fig.19 The black dots D) are set at equal intervals.

[0106] In the cross section perpendicular to the central axis 30a of the camera module 30 (parallel to the XY plane), the third shielding member 363, the fourth shielding member 364 and the fifth shielding member 365 respectively occupy 20% of the third gap 103, and the third shielding member 363, the fourth shielding member 364 and the fifth shielding member 365 together cover 60% of the third gap 103.

[0107] It is understandable that the shielding assembly 36 may also include four, five, six or other larger number of shielding members 360 . The distribution of the plurality of shielding members 360 may also refer to the above embodiment and will not be described in detail here.

[0108] In some embodiments, the shielding component 36 may also be an elastic sheet, which may also expand and contract with the movement of the lens 35, thereby avoiding affecting the movement and focus of the lens 35. The elastic sheet may be a thin sheet made of rubber, silicone, etc. The elastic sheet may be connected to the housing 341 and the lens 35 by bonding, riveting, etc., and this application does not specifically limit this.

[0109] For example, see Fig. 20 As shown, Fig. 20 A cross-sectional schematic diagram of another camera module 30 provided in an embodiment of the present application, wherein the elastic sheet is connected between the outer surface of the second wall plate 3412 and the light emitting end of the lens 35 , and completely covers the third gap 103 .

[0110] In other embodiments, see Fig.21 , Fig. 22 As shown, Fig.21 This is an exploded view of the structure of another camera module 30 provided in an embodiment of the present application. Fig. 22 for Fig.21 Schematic diagram of the cross section (parallel to the YZ plane) of the camera module 30.

[0111] The camera module 30 may further include a filter 37 and a bracket 38. The bracket 38 is disposed between the substrate 31 and the drive motor 34, one side surface of the bracket 38 is fixedly connected to the second wall plate 3412 of the housing 341, and the other side surface of the bracket 38 is fixedly connected to the substrate 31, and the filter 37 is disposed on the bracket 38.

[0112] The filter 37 is used to block light outside the wavelength visible to the human eye, so that the picture taken by the camera module 30 is closer to the picture seen by the human eye.

[0113] Since the light emitted from the light-emitting surface of the lens 35 needs to pass through the filter 37 before irradiating the photosensitive surface 32a of the photosensitive chip 32, when foreign matter such as dust adheres to the filter 37, it will also cause black shadows to appear in the picture taken by the camera module 30.

[0114] By setting the shielding component 36 between the lens 35 and the housing 341 of the driving motor 34, at least a portion of dust and other foreign matter can be blocked from falling onto the filter 37 along the gap between the lens 35 and the housing 341 of the driving motor 34, thereby reducing the risk of black shadows appearing in the picture taken by the camera module 30.

[0115] The filter 37 may be a BG (Blue Glass) filter or a resin filter, etc., and this application does not make any special limitation on this.

[0116] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0117] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A camera module, characterized in that: include: A photosensitive chip, wherein the photosensitive chip has a photosensitive surface; A driving motor, the driving motor comprising a housing and a carrier, the carrier being movably disposed in the housing; A lens, wherein the lens is at least partially disposed in the housing and connected to the carrier, and a light-emitting surface of the lens faces a light-sensitive surface of the photosensitive chip; A shielding component is arranged between the shell and the lens. On a cross section perpendicular to the central axis of the camera module, there is a gap between the lens and the shell, and the shielding component covers at least a portion of the gap.

2. The camera module according to claim 1, characterized in that: On a cross section perpendicular to the central axis of the camera module, the shielding assembly covers at least 30% of the gap between the lens and the housing.

3. The camera module according to claim 1, characterized in that: In a cross section perpendicular to the central axis of the camera module, the shielding assembly completely covers the gap between the lens and the housing.

4. The camera module according to any one of claims 1 to 3, characterized in that: The shell has a first wall panel and a second wall panel arranged opposite to each other, the first wall panel is provided with a first mounting hole, the second wall panel is provided with a second mounting hole, the light incident surface of the lens is arranged at the first mounting hole, and the light exit surface of the lens is arranged at the second mounting hole; the shielding assembly is arranged between the second wall panel and the lens.

5. The camera module according to claim 4, characterized in that: The shielding component is arranged between the inner wall of the second mounting hole and the outer wall of the lens.

6. The camera module according to any one of claims 1 to 3, characterized in that: The shielding assembly is a shielding member, and in a cross section perpendicular to the central axis of the camera module, the shielding member extends along the gap between the lens and the housing.

7. The camera module according to claim 1 or 2, characterized in that: The shielding assembly includes a plurality of shielding members, and in a cross section perpendicular to the central axis of the camera module, the plurality of shielding members are arranged around the central axis of the camera module.

8. The camera module according to claim 7, characterized in that: The plurality of shielding members include a first shielding member and a second shielding member, and the first shielding member and the second shielding member are spaced apart around a central axis of the camera module.

9. The camera module according to claim 8, characterized in that: The first shielding member and the second shielding member are centrally symmetrically arranged about a central axis of the camera module.

10. The camera module according to claim 7, characterized in that: The plurality of shielding members include a third shielding member, a fourth shielding member and a fifth shielding member, and the third shielding member, the fourth shielding member and the fifth shielding member are arranged at intervals around the central axis of the camera module.

11. The camera module according to claim 10, characterized in that: The third shielding member, the fourth shielding member and the fifth shielding member are arranged at equal intervals around the central axis of the camera module.

12. The camera module according to any one of claims 1 to 3, characterized in that: The shielding component is a colloid, and the colloid is filled in the gap between the housing and the lens.

13. The camera module according to claim 12, characterized in that: The stretching rate of the colloid is 500% to 1000%.

14. The camera module according to claim 12, characterized in that: The viscosity of the colloid is 15000-45000 mPa.s.

15. The camera module according to any one of claims 1 to 3, characterized in that: The shielding component is an elastic sheet, and the elastic sheet is connected to the housing and the lens respectively.

16. An electronic device, characterized in that: include: shell; A mainboard, disposed in the housing; The camera module is the camera module according to any one of claims 1 to 15, wherein the camera module is arranged in the housing and electrically connected to the mainboard.

Images