Camera module and electronic device

Abstract

The application discloses a camera module and electronic equipment, the camera module comprises: a lens assembly; a circuit board; an image sensor; a filter assembly comprising a filter and a filter support, the filter support comprising: a support body, the support body is provided with a first groove on one side along the optical axis direction of the lens assembly, the bottom wall of the first groove is provided with a light transmission hole, the light transmission hole communicates the light path between the lens assembly and the image sensor; a boss, the boss is located on the side of the support body provided with the first groove, the side of the boss away from the support body has an abutting surface perpendicular to the optical axis direction of the lens assembly, the boss is surrounded outside the edge of the first groove, so that the boss has an internal side surface close to the first groove and an external side surface away from the first groove, wherein the boss is provided with a notch, the notch is located on the side of the boss with the abutting surface and penetrates the internal side surface and the external side surface.

Description

Technical Field

[0001] This application relates to the field of image acquisition technology, specifically to camera modules and electronic devices. Background Technology

[0002] Camera modules can be used in electronic devices such as mobile phones, cameras, or tablets to enable functions such as taking photos, videos, or recording videos.

[0003] A camera module typically includes a lens, a mount, filters, and an image sensor. The lens, located above the mount, collects light and transmits it to the image sensor for imaging. The filters, mounted in grooves on the upper surface of the mount, filter out invisible light such as infrared light to improve image quality. The image sensor, located below the mount, collects the light passing through the lens and filters and converts it into an electrical signal output. The lens can move relative to the image sensor to achieve focusing.

[0004] However, during lens movement, particles generated by friction may accumulate on the filter surface, preventing light from reaching the sensor's photosensitive area and affecting the final image. Utility Model Content

[0005] This application discloses a camera module and an electronic device to solve the problem of particles accumulating on the surface of the filter inside the lens and affecting imaging.

[0006] To achieve the above objectives, in a first aspect, embodiments of this application disclose a camera module, comprising:

[0007] The lens assembly is used to receive external light and form an image;

[0008] A circuit board, which is disposed opposite to the lens assembly;

[0009] An image sensor is disposed on the circuit board, and the photosensitive surface of the image sensor faces the lens assembly;

[0010] A filter assembly includes a filter and a filter holder, wherein the filter holder includes:

[0011] The support body has a first groove on one side along the optical axis of the lens assembly. The first groove is used to accommodate and support the filter. The bottom wall of the first groove has a light-transmitting hole, which connects the optical path between the lens assembly and the image sensor.

[0012] A boss is located on the side of the bracket body where the first groove is provided. The side of the boss away from the bracket body has an abutment surface perpendicular to the optical axis of the lens assembly. The boss surrounds the outer edge of the first groove, such that the boss has an inner side surface close to the first groove and an outer side surface away from the first groove. The boss is provided with a notch located on the side of the boss with the abutment surface and penetrates the inner side surface and the outer side surface.

[0013] Compared with the prior art, the beneficial effects of this application are at least as follows:

[0014] In the camera module provided in this application embodiment, the filter holder in the filter assembly accommodates and supports the filter through a first groove, while simultaneously blocking the lens assembly moving towards the image sensor during focusing. When blocking, the abutment surface of the boss on the filter holder fully contacts the edge of the lens assembly located on the image sensor side. The boss protects the filter from collisions with the lens assembly and also cushions impacts from the lens assembly. A notch penetrating the inner and outer sides of the boss is provided on the abutment surface side, forming a channel that connects the interior and exterior of the semi-enclosed space surrounding the first groove formed by the boss. During focusing and adjustment of the lens assembly, when the lens assembly extends or collides with the filter holder, particles and dust are generated. These particles and dust can leave the semi-enclosed space surrounding the boss through the aforementioned channel when the lens assembly pushes air, thus preventing accumulation on the filter surface and affecting the imaging of the camera module.

[0015] Optionally, the depth of the notch in the optical axis direction of the lens assembly is equal to the height of the boss.

[0016] This design allows for an enlarged channel connecting the inside and outside of the boss without altering the design of the notch on the contact surface. Consequently, dust and particles can more easily leave the semi-enclosed space above the filter surrounded by the boss, preventing them from accumulating on the filter surface and affecting the camera module's imaging.

[0017] Optionally, the boss includes a plurality of notches, which are arranged radially around the first groove and divide the boss into a plurality of sub-parts.

[0018] This design, with multiple notches, increases the number of channels connecting the inside and outside of the boss. Therefore, the total area occupied by each channel on the inner side of the boss increases, facilitating the removal of dust and particles from the space above the filter surrounded by the boss. Simultaneously, since the depth of the notches is equal to the height of the boss, the multiple notches divide the boss into several discrete sub-parts. These sub-parts, arranged around the first groove, both obstruct and buffer the lens assembly moving towards the image sensor and avoid obstructing devices located near the filter support inside the camera module.

[0019] Optionally, the first groove is square, and the boss has four notches, which are respectively located on the outer sides of the four corners of the first groove.

[0020] This configuration allows the boss to be divided into four sub-parts along each side of the first groove.

[0021] Optionally, the projection of the boss on the first plane extends at least partially beyond the projection of the support body on the first plane, wherein the first plane is perpendicular to the optical axis of the lens assembly.

[0022] This design, where the protrusion extends beyond the main support body, protects electronic components on the circuit board—located both near the filter support and within the protrusion's projection area—from impact when the lens assembly moves towards the image sensor. Furthermore, extending the protrusion beyond the main support body increases the contact area between the lens assembly and the protrusion, providing better cushioning against collisions and reducing the overall vibration amplitude of the camera module, thereby minimizing dust and particles generated by vibration.

[0023] Optionally, the bracket body is rectangular, and the abutment surface of the boss corresponds to the projection of the lens assembly on the first plane, such that the sub-part located on the long side of the bracket body at least partially extends beyond the bracket body.

[0024] With this configuration, when the main body of the bracket is rectangular, the sub-part located on the long side can extend at least partially beyond the main body of the bracket, provided that the abutting surface of the boss corresponds to the projection of the lens assembly on the first plane.

[0025] Optionally, the abutment surface is provided with an elastic protrusion, the edge of the elastic protrusion corresponding to the edge of the abutment surface, and the elastic protrusion is used to contact the lens assembly.

[0026] With this design, when the contact surface comes into contact with the lens assembly, the elastic protrusion can further buffer the impact of the lens assembly, reduce the overall vibration amplitude of the camera module, and thus reduce dust and particles generated by vibration.

[0027] Optionally, the support body has a second groove on the other side of the optical axis of the lens assembly for accommodating the image sensor, wherein the depth of the second groove is adapted to the height of the image sensor.

[0028] This design, which houses the image sensor within the second recess of the bracket body, achieves the goal of reducing the shoulder height of the camera module without creating a recess on the circuit board to accommodate the image sensor, while simultaneously ensuring the structural strength of the circuit board.

[0029] Optionally, the bottom wall of the second groove is provided with a reinforcing protrusion along the side length direction of the second groove.

[0030] This design, by providing reinforcing protrusions along the side length of the bottom wall of the second groove, can improve the mechanical strength of the bottom wall of the second groove and prevent it from breaking.

[0031] Secondly, this application also provides an electronic device, including: a device body and a camera module as described in the first aspect, wherein the camera module is disposed on the device body.

[0032] Compared with the prior art, the beneficial effects of this application are at least as follows:

[0033] The electronic device provided in this application embodiment, through a camera module including the first aspect described above, allows the filter holder in the filter assembly to accommodate and support the filter via a first groove, while simultaneously blocking the lens assembly moving towards the image sensor during focusing. When blocking, the abutment surface of the boss on the filter holder fully contacts the edge of the lens assembly located on the image sensor side. The boss protects the filter from collisions with the lens assembly and also cushions impacts from the lens assembly. A notch penetrating the inner and outer sides of the boss is provided on the side with the abutment surface, forming a channel on the boss that connects the interior and exterior of the semi-enclosed space surrounding the first groove formed by the boss. During focusing and adjustment of the lens assembly, when the lens assembly extends or collides with the filter holder, particles and dust are generated. These particles and dust can leave the semi-enclosed space surrounding the boss via the aforementioned channel when the lens assembly pushes air, thus preventing accumulation on the filter surface and affecting the imaging of the camera module. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the camera module according to an embodiment of this application;

[0036] Figure 2 An exploded view of a camera module according to an embodiment of this application;

[0037] Figure 3 This is a cross-sectional view of a camera module according to an embodiment of this application;

[0038] Figure 4 This is a schematic diagram of the filter holder in the camera module according to an embodiment of this application;

[0039] Figure 5 This is a side view of the filter bracket in the camera module according to an embodiment of this application;

[0040] Figure 6 For the filter bracket in the camera module according to the embodiments of this application, along Figure 5 A cross-sectional view along the AA direction;

[0041] Figure 7 This is a schematic diagram of the filter bracket in the camera module according to an embodiment of the present application, viewed from the second groove side.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100-Camera Module;

[0044] 1-Lens assembly; 2-Circuit board; 3-Image sensor; 4-Filter assembly;

[0045] 31-Photosensitive surface; 41-Filter; 42-Filter holder;

[0046] 421 - Support body; 422 - First groove; 423 - Light-transmitting hole; 424 - Boss; 425 - Notch; 426 - Second groove; 427 - Reinforcing protrusion;

[0047] 4241 - Abutting surface; 4242 - Inner side surface; 4243 - Outer side surface; 4244 - Sub-part. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0049] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0050] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0051] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0052] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0053] Camera modules used in electronic devices such as mobile phones, cameras, and tablets typically include a lens, a mount, filters, and an image sensor. The lens, located above the mount, collects light and transmits it to the image sensor for imaging. The filters, usually mounted in grooves on the upper surface of the mount, filter out invisible light such as infrared light to improve image quality. The image sensor, located below the mount, collects the light passing through the lens and filters and converts it into an electrical signal output. The lens can move relative to the image sensor to achieve focusing.

[0054] During focusing, the extension and retraction of the lens causes friction between its various parts, generating microparticles. Additionally, as the lens moves towards the image sensor, it may collide with components such as the support frame, and the resulting vibrations also produce microparticles and dust. These microparticles and dust can accumulate on the filter surface, preventing light from reaching the sensor's photosensitive area and affecting the final image.

[0055] To address the aforementioned issues, this application provides a camera module and electronic device. The camera module's support portion is improved by creating a channel on the sidewall of the space surrounding the filter, connecting the internal and external spaces formed by this channel. This allows particles and dust in the internal space to be trapped in the air and leave the filter and its internal space as the lens moves towards the image sensor. This prevents the accumulation of particles and dust on the filter, thus avoiding their impact on the final image.

[0056] The present application will be described in detail below through specific embodiments:

[0057] Figure 1 This is a schematic diagram of the structure of the camera module 100 according to an embodiment of this application. Figure 2 This is an exploded view of the camera module 100 according to an embodiment of this application. Figure 3 This is a cross-sectional view of a camera module 100 according to an embodiment of this application. The camera module 100 in this embodiment can be applied to electronic devices such as mobile phones, cameras, or tablet computers, and is used to realize functions such as taking pictures, taking pictures, or recording videos.

[0058] The camera module 100 in this embodiment may include components such as a lens assembly 1, a circuit board 2, an image sensor 3, and a filter assembly 4.

[0059] Lens assembly 1 is used to receive external light and form an image; circuit board 2 is disposed opposite to lens assembly 1; image sensor 3 is disposed on circuit board 2, and the photosensitive surface 31 of image sensor 3 faces lens assembly 1; filter assembly 4 includes filter 41 and filter support 42, filter support 42 includes: support body 421, the support body 421 is provided with a first groove 422 on one side along the optical axis of lens assembly 1, the first groove 422 is used to accommodate and support filter 41, the bottom wall of the first groove 422 is provided with a light-transmitting hole 423, the light-transmitting hole 423 connects the optical path between lens assembly 1 and image sensor 3; convex The platform 424 is located on the side of the support body 421 where the first groove 422 is provided. The side of the platform 424 away from the support body 421 has an abutment surface 4241 perpendicular to the optical axis of the lens assembly 1. The platform 424 surrounds the outer edge of the first groove 422, so that the platform 424 has an inner side surface 4242 close to the first groove 422 and an outer side surface 4243 away from the first groove 422. The platform 424 is provided with a notch 425, which is located on the side of the platform 424 with the abutment surface 4241 and extends through the inner side surface 4242 and the outer side surface 4243.

[0060] The lens assembly 1 is the optical input end of the camera module 100, and typically includes a lens barrel, one or more lens elements, and a drive motor for functions such as focusing or optical image stabilization. During focusing, under the action of the drive motor, the lens assembly 1 extends or moves along the optical axis of the lens assembly 1, so that the incident light passes through the filter 41, through the light aperture 423, and finally converges on the photosensitive surface 31 of the image sensor 3.

[0061] The circuit board 2 is positioned facing the lens assembly 1, and integrates circuit traces and electronic components, while also providing physical support for the image sensor 3 and the filter holder 42.

[0062] Image sensor 3 can be in a chip-scale package (CSP) or a chip-on-board (COB) package, or other types of packaging, which are not limited here. When image sensor 3 is in a CSP package, it can be directly soldered onto circuit board 2. When image sensor 3 is in a COB package, it can be glued to the surface of circuit board 2 facing lens assembly 1; or a groove can be formed on the side of circuit board 2 facing lens assembly 1 to accommodate part or all of image sensor 3 in the groove on circuit board 2. The photosensitive surface 31 of image sensor 3 faces lens assembly 1 and is located on the optical axis of lens assembly 1.

[0063] The filter 41 in the filter assembly 4 is typically an infrared cutoff filter, used to filter out infrared light invisible to the human eye, preventing infrared light from interfering with the color reproduction of the image sensor 3, and making the image color closer to what the human eye sees. In other embodiments, the filter 41 can also be other types of filters, which are not limited here.

[0064] Figure 4 This is a schematic diagram of the structure of the filter bracket 42 in the camera module 100 according to an embodiment of this application. Figure 5 This is a side view of the filter holder 42 in the camera module 100 according to an embodiment of this application. Figure 6 For the filter holder 42 in the camera module 100 according to the embodiments of this application, along Figure 5 A cross-sectional view along the AA direction. The filter holder 42 includes a holder body 421 and a boss 424. In the optical axis direction of the lens assembly 1, i.e., in the thickness direction of the holder body 421, one side of the holder body 421 has a first groove 422 for accommodating and supporting the filter 41, and the other side of the holder body 421 is attached to the surface of the circuit board 2 facing the lens assembly 1. The bottom wall of the first groove 422 is provided with a light-transmitting hole 423, allowing light incident on the lens assembly 1 and passing through the filter 41 to reach the photosensitive surface 31 of the image sensor 3 through the light-transmitting hole 423.

[0065] The filter holder 42 also includes a boss 424, which and the first groove 422 are located on the same side of the holder body 421, i.e., facing the lens assembly 1. The boss 424 surrounds the outside of the first groove 422, forming a semi-enclosed space that surrounds the first groove 422 and the filter 41 within it. The boss has an abutment surface 4241 perpendicular to the optical axis of the lens assembly 1. When the lens assembly 1 moves toward the image sensor 3, the abutment surface 4241 can fully contact the edge of the lens assembly 1.

[0066] The boss 424 has a notch 425 on one side with abutting surface 4241, which penetrates the inner side surface 4242 and the outer side surface 4243 of the boss 424, thereby forming a channel on the boss 424. This channel can connect the interior and exterior of the semi-enclosed space formed by the boss 424. The shape of the notch 425 on the abutting surface 4241 is not limited, and the depth of the notch 425 in the direction perpendicular to the optical axis of the lens assembly 1 can be the same or different. There is no limitation here, as long as it forms a channel connecting the interior and exterior of the semi-enclosed space formed by the boss 424.

[0067] In other possible implementations, the notch 425 may also be provided on the opposite side of the boss 424 from the side having the abutment surface 4241. Alternatively, a channel may be formed in the boss 424 to connect the interior and exterior of the semi-enclosed space formed by the boss 424, while the notch 425 is not present on the upper or lower surface of the boss 424.

[0068] In the camera module 100 according to an embodiment of this application, the filter holder 42 in the filter assembly 4 accommodates and supports the filter 41 through the first groove 422, and at the same time, it acts as a barrier against the lens assembly 1 moving toward the image sensor during focusing. When acting as a barrier, the abutment surface 4241 of the boss 424 on the filter holder 42 fully contacts the edge of the lens assembly 1 located on the image sensor 3 side. The boss 424 protects the filter 41 from collision with the lens assembly 1, and also cushions the impact of the lens assembly 1. A notch 425 is provided on the side of the boss 424 with the abutment surface 4241, penetrating the inner side 4242 and the outer side 4243 of the boss 424, thereby forming a channel on the boss 424 that connects the interior and exterior of the semi-enclosed space surrounding the first groove 422 formed by the boss 424. During the focusing and focusing process of lens assembly 1, when lens assembly 1 extends or collides with filter bracket 42, particles and dust are generated. When the lens assembly pushes the air, these particles and dust can leave the semi-enclosed space surrounded by the boss 424 through the aforementioned channel, thereby avoiding accumulation on the surface of filter 41 and affecting the imaging of camera module 100.

[0069] The following provides further explanation of the possible implementation methods for each part of the camera module 100:

[0070] Optionally, the depth of the notch 425 in the optical axis direction of the lens assembly 1 is equal to the height of the boss 424.

[0071] It should be noted that the concept of "equality" here is approximate. Slightly higher or lower depths of the notch 425 than the height of the boss 424 can be considered as equal. For example, when the height of the boss 424 is 0.5mm, a depth of 0.48mm or 0.52mm for the notch 425 can both be considered as equal to the height of the boss 424.

[0072] By increasing the depth of the notch 425 in the optical axis direction of the lens assembly 1 to be equal to the height of the boss 424, without changing the design of the notch 425 on the abutment surface 4241, the channel opening connecting the inner side of the boss (i.e. the side near the first groove 422) and the outer side of the boss (i.e. the side away from the first groove 422) is enlarged. This makes it easier for dust and particles to leave the interior of the semi-enclosed space surrounded by the boss 424 above the filter 41, avoiding accumulation on the surface of the filter 41 and affecting the imaging of the camera module 100.

[0073] Optionally, the boss 424 includes a plurality of notches 425, which are arranged radially around the first groove 422 and divide the boss 424 into a plurality of sub-parts 4244.

[0074] Since the depth of the notch 425 is the same as the height of the boss 424, there is no overlap between the multiple notches 425 that penetrate the inner side 4242 and the outer side 4243 of the boss 424 and are arranged radially, thus dividing the boss 424 into multiple sub-parts 4244.

[0075] The protrusion 424 includes multiple notches 425, which increases the number of channels connecting the inner and outer sides of the protrusion. The total area occupied by each channel opening on the inner side 4242 of the protrusion 424 increases, which is beneficial for dust and particles to leave the space above the filter 41 surrounded by the protrusion 424. At the same time, since the depth of the notches 425 is equal to the height of the protrusion 424, the multiple notches 425 can divide the protrusion 424 into several discrete sub-parts 4244. These sub-parts 4244 are arranged around the first groove 422, which can both block and buffer the lens assembly 1 moving towards the image sensor 3, and avoid the device located inside the camera module 100 near the filter support 42, making the structure of the camera module 100 more compact.

[0076] Optionally, the first groove 422 is square, and the boss 424 has four notches 425, which are respectively located on the outer side of the four corners of the first groove 422.

[0077] When the first groove 422 is square, four notches 425 are provided on the outer side of the four corners of the boss 424, dividing the boss 424 into four sub-parts 4244 along the respective side lengths of the first groove 422.

[0078] Optionally, the projection of the boss 424 onto the first plane may at least partially extend beyond the projection of the support body 421 onto the first plane, wherein the first plane is perpendicular to the optical axis direction of the lens assembly 1.

[0079] The first plane is perpendicular to the optical axis of the lens assembly 1, that is, the first plane is parallel to the abutment surface 4241 of the boss 424.

[0080] The projection of the boss 424 onto the first plane at least partially extends beyond the projection of the support body 421 onto the first plane; that is, the abutment surface 4241 of the boss 424 at least partially extends beyond the support body 421. By extending the boss 424 beyond the support body 421, electronic components located near the filter support 42 on the circuit board 2 can be protected when the lens assembly 1 moves toward the image sensor 3. Specifically, these electronic components are located within the projection range of the boss 424 onto the first plane, and also within the projection range of the lens assembly 1 onto the first plane. Therefore, when the lens assembly 1 is focusing, these electronic components are protected by the structure of the filter support 42 itself (mainly the portion extending beyond the support body 421), thus preventing them from being impacted by the lens assembly 1. In addition, extending the boss 424 beyond the support body 421 increases the contact area between the lens assembly 1 and the boss 424, providing better cushioning for collisions between the lens assembly 1 and the boss 424, reducing the overall vibration amplitude of the camera module 100, thereby reducing dust and particles generated by vibration.

[0081] Optionally, the bracket body 421 is rectangular, and the abutment surface 4241 of the boss 424 corresponds to the projection of the lens assembly 1 on the first plane, such that the sub-part 4244 located on the long side of the bracket body 421 at least partially extends beyond the bracket body 421.

[0082] When the bracket body 421 is rectangular, since the projection of the lens assembly 1 on the first plane extends beyond the range of the short side of the bracket body 421, when the abutment surface 4241 of the boss 424 corresponds to the projection of the lens assembly 1 on the first plane, the sub-part 4244 located on the long side extends at least partially beyond the bracket body 421.

[0083] Optionally, the abutment surface 4241 is provided with an elastic protrusion, the edge of the elastic protrusion corresponding to the edge of the abutment surface 4241, and the elastic protrusion is used to contact the lens assembly 1.

[0084] By providing elastic protrusions on the contact surface 4241 corresponding to the edge of the contact surface 4241, when the contact surface 4241 contacts the lens assembly 1, the elastic protrusions can further buffer the impact of the lens assembly 1, reduce the overall vibration amplitude of the camera module 100, and thus reduce dust and particles generated by vibration.

[0085] Optionally, the support body 421 is provided with a second groove 426 on the other side of the optical axis direction of the lens assembly 1 for accommodating the image sensor 3, wherein the depth of the second groove 426 is adapted to the height of the image sensor 3.

[0086] Figure 7This is a schematic diagram of the filter holder 42 in the camera module 100 according to an embodiment of this application, viewed from the second groove side. The depth of the second groove 426 is adapted to the height of the image sensor 3, such that when the image sensor 3 is directly attached to the surface of the circuit board 2, the second groove 426 can just completely accommodate the image sensor 3 in the optical axis direction of the lens assembly 1.

[0087] By providing a second groove 426 on the opposite side of the bracket body 421 relative to the first groove 422 to accommodate the image sensor 3, and by adapting the depth of the second groove 426 to the height of the image sensor 3, the arrangement of the various components inside the camera module 100 becomes more compact. Even without creating a groove on the circuit board 2 to accommodate the image sensor 3, the goal of reducing the shoulder height of the camera module 100 is achieved while ensuring the structural strength of the circuit board 2.

[0088] Optionally, the bottom wall of the second groove 426 is provided with a reinforcing protrusion 427 along the side length direction of the second groove 426.

[0089] Because the filter holder 42 has a first groove 422 and a second groove 426 respectively on both sides of the optical axis of the lens assembly 1, the structure formed by the bottom wall of the first groove 422 and the bottom wall of the second groove 426 is relatively thin and has limited mechanical strength. By providing a reinforcing protrusion 427 along the side length direction on the bottom wall of the second groove 426, the mechanical strength of the structure formed by the two bottom walls can be improved, preventing the structure from breaking.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A camera module, characterized in that, include: The lens assembly is used to receive external light and form an image; A circuit board, which is disposed opposite to the lens assembly; An image sensor is disposed on the circuit board, and the photosensitive surface of the image sensor faces the lens assembly; A filter assembly includes a filter and a filter holder. The filter holder includes: a holder body, on one side of the holder body along the optical axis of the lens assembly, a first groove for accommodating and supporting the filter; a light-transmitting hole on the bottom wall of the first groove, the light-transmitting hole connecting the optical path between the lens assembly and the image sensor; and a boss located on the side of the holder body with the first groove, the side of the boss away from the holder body having an abutment surface perpendicular to the optical axis of the lens assembly; the boss surrounding the outer edge of the first groove, such that the boss has an inner side close to the first groove and an outer side away from the first groove; wherein the boss has a notch located on the side of the boss with the abutment surface and penetrating the inner side and the outer side.

2. The camera module according to claim 1, characterized in that, The depth of the notch in the optical axis direction of the lens assembly is equal to the height of the boss.

3. The camera module according to claim 2, characterized in that, The boss includes a plurality of notches, which are arranged radially around the first groove and divide the boss into a plurality of sub-parts.

4. The camera module according to claim 3, characterized in that, The first groove is square, and the boss has four notches, which are respectively located on the outer sides of the four corners of the first groove.

5. The camera module according to claim 4, characterized in that, The projection of the boss onto the first plane at least partially exceeds the projection of the support body onto the first plane, wherein the first plane is perpendicular to the optical axis of the lens assembly.

6. The camera module according to claim 5, characterized in that, The main body of the bracket is rectangular, and the abutment surface of the boss corresponds to the projection of the lens assembly on the first plane, such that the sub-part located on the long side of the main body of the bracket at least partially extends beyond the main body of the bracket.

7. The camera module according to claim 6, characterized in that, An elastic protrusion is provided on the abutment surface, the edge of the elastic protrusion corresponds to the edge of the abutment surface, and the elastic protrusion is used to contact the lens assembly.

8. The camera module according to claim 7, characterized in that, The support body has a second groove on the other side of the optical axis of the lens assembly for accommodating the image sensor, wherein the depth of the second groove is adapted to the height of the image sensor.

9. The camera module according to claim 8, characterized in that, The bottom wall of the second groove is provided with a reinforcing protrusion along the side length direction of the second groove.

10. An electronic device, characterized in that, include: The device body and the camera module according to any one of claims 1-9, wherein the camera module is disposed on the device body.

Images