Filter holders, camera modules and electronic devices

Abstract

This application discloses a filter holder, a camera module, and an electronic device. The filter holder includes a support body and a boss. The support body has a first side and a second side. The first side has a support groove, and the bottom wall of the support groove has a light-transmitting opening. The filter element of the camera module is disposed on the bottom wall of the support groove and covers the light-transmitting opening. The boss is disposed on the first side and has an abutment surface that is higher than the opening of the support groove. The abutment surface is used to abut against the lens of the camera module to avoid collision between the lens and the filter element, thereby protecting the filter element and preventing damage to it. The boss has a clearance groove located on the side of the boss away from the support groove. In the thickness direction of the filter holder, the abutment surface is higher than the bottom wall of the clearance groove. The clearance groove can be used to avoid interference between the motor housing and the filter holder during assembly or dynamic calibration, so as to facilitate the adjustment of the position of the motor and the lens on the motor and ensure the image quality of the camera module.

Description

Technical Field

[0001] This application relates to the field of image acquisition technology, specifically to a filter bracket, a camera module, and an electronic device. 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 light filter, and an image sensor. The lens collects light and transmits it to the image sensor for imaging. The light filter, located between the lens and the image sensor, filters out invisible light such as infrared light to improve image quality. The lens can move relative to the image sensor to achieve focusing.

[0004] However, during collision or drop tests on the camera module, the lens may collide with the filter, causing damage to the filter. Utility Model Content

[0005] This application provides a filter bracket, a camera module, and an electronic device, which can protect the filter components in the camera module.

[0006] In a first aspect, embodiments of this application provide a filter bracket, which is applied to a camera module. The filter bracket includes a support body and a boss. The support body has a first side and a second side spaced apart in the thickness direction of the filter bracket, and a support groove provided on the first side. The bottom wall of the support groove is provided with a light-transmitting opening that penetrates the support body. The filter element of the camera module is provided on the bottom wall of the support groove and covers the light-transmitting opening. The boss is provided on the first side. The side of the boss away from the support body has an abutment surface. In the thickness direction of the filter bracket, the abutment surface is higher than the opening of the support groove and is used to abut against the lens of the camera module.

[0007] Therefore, the contact surface can abut against the lens to avoid collision between the lens and the filter, thereby protecting the filter and preventing damage to it.

[0008] The boss is provided with a relief groove, which is located on the side of the boss away from the bearing groove. In the thickness direction of the filter bracket, the contact surface is higher than the bottom wall of the relief groove.

[0009] With the above settings, the clearance groove can be used to avoid interference between the motor housing and the filter bracket during assembly or dynamic calibration, so as to facilitate the adjustment of the position of the motor and the lens on the motor and ensure the image quality of the camera module.

[0010] Optionally, the abutment surface is parallel to the first side surface, and the bottom wall of the clearance groove is parallel to the abutment surface. This arrangement facilitates the abutment surface to abut against the side of the lens barrel closest to the filter element, thus protecting the filter element. It also facilitates the bottom wall of the clearance groove to avoid obstructing the motor housing, thereby facilitating the adjustment of the motor and the position of the lens on the motor, ensuring the image quality of the camera module.

[0011] Optionally, the clearance groove has a clearance groove sidewall, which is connected between the bottom wall of the clearance groove and the abutment surface. The clearance groove sidewall is located on the side of the boss away from the bearing groove. The shape of the clearance groove and the shape of the clearance groove sidewall are adapted to the shape of the motor housing of the camera module and are used to avoid the motor housing.

[0012] The above settings allow the clearance groove and its sidewalls to avoid interference with the motor housing during assembly or dynamic calibration, thus facilitating the adjustment of the motor and the position of the lens on the motor and ensuring the image quality of the camera module.

[0013] Optionally, in the thickness direction of the filter holder, the height difference between the abutment surface and the bottom wall of the clearance groove is less than the height difference between the abutment surface and the opening of the bearing groove.

[0014] The above settings facilitate the avoidance of the motor housing by the bottom wall of the avoidance slot, thereby making it easier to adjust the position of the motor and the lens on the motor, ensuring the image quality of the camera module.

[0015] Optionally, at least two clearance slots are provided, and each clearance slot is spaced apart in a direction parallel to the first side, with the bearing slot located between the two clearance slots spaced apart from each other.

[0016] With the above settings, each clearance slot can be set to correspond to different parts of the motor housing, so that the filter bracket can avoid the motor housing, thereby facilitating the adjustment of the position of the motor and the lens on the motor, and ensuring the image quality of the camera module.

[0017] Optionally, the boss is arranged outside the edge of the groove opening of the bearing groove, and there is a gap between the edge of the boss on the side closer to the bearing groove and the edge of the groove opening of the bearing groove.

[0018] The above design increases the contact area between the boss and the lens, preventing collisions between the lens and the filter and protecting the filter. It also facilitates the application of adhesive between the filter and the sidewalls of the mounting groove to form a dust-proof adhesive layer, protecting the image sensor.

[0019] Optionally, the boss forms a dispensing groove, which is connected to the carrier groove. The dispensing groove and the carrier groove are arranged in the thickness direction of the filter bracket. In the thickness direction of the filter bracket, the projection shape of the dispensing groove and the projection shape of the carrier groove are the same. The projection of the dispensing groove surrounds the projection of the carrier groove. The camera module has a dustproof adhesive layer, which is bonded between the filter element and the filter bracket. The dispensing groove is used to accommodate at least part of the dustproof adhesive layer.

[0020] By implementing the above settings, the amount of adhesive used to form the dustproof adhesive layer can be increased, as can the bonding area between the filter element and the filter holder. This ensures a more secure bond between the filter element and the filter holder, while preventing fine particles such as dust, fibers, or metal shavings from penetrating the gap between the filter element and the filter holder and falling onto the image sensor, thus improving the protection of the image sensor. Furthermore, it prevents adhesive from overflowing onto the contact surface during the dispensing process.

[0021] Optionally, the carrier groove has a first sidewall and a second sidewall, with an included angle between the first sidewall and the second sidewall, and a clearance notch is connected between the first sidewall and the second sidewall. The clearance notch protrudes outward from the sidewall of the carrier groove and is used to avoid the corner edge of the filter element.

[0022] With the above settings, the clearance notch can be set to correspond to the corner of the filter to avoid the corner edge of the filter, thus preventing the corner of the filter from colliding with and being damaged by the side wall of the bearing groove during assembly, thereby protecting the filter.

[0023] Secondly, this application provides a camera module, including: a lens, a filter, an image sensor, and a filter holder as described in any of the above embodiments. The filter is disposed on the bottom wall of the support groove and covers the light-transmitting port. The lens and the filter are located on the same side of the filter holder. The image sensor is located on the other side of the filter holder relative to the filter and faces the light-transmitting port. The filter is located between the lens and the image sensor, with its contact surface facing the lens.

[0024] With the above-mentioned design, the contact surface can abut against the lens to prevent the lens from colliding with the filter, thereby protecting the filter and preventing damage. Furthermore, the clearance groove can avoid the motor in the camera module, facilitating the adjustment of the motor and the position of the lens on the motor, ensuring the image quality of the camera module.

[0025] Thirdly, embodiments of this application provide an electronic device, including: a device body and a camera module as described in any of the above embodiments, wherein the camera module is disposed on the device body.

[0026] With the above configuration, the filter holder in the camera module can protect the filter components, preventing damage and improving the quality of the electronic device. Furthermore, the filter holder can avoid obstructing the motor in the camera module, facilitating adjustment of the motor and the position of the lens mounted on it, thus ensuring image quality for the electronic device.

[0027] The filter holder provided in this embodiment has a supporting body with a first side and a second side spaced apart along the thickness direction of the filter holder, and a supporting groove on the first side. The bottom wall of the supporting groove has a light-transmitting opening that penetrates the supporting body. A filter element of the camera module is disposed on the bottom wall of the supporting groove and covers the light-transmitting opening. A boss is disposed on the first side, and the side of the boss facing away from the supporting body has an abutment surface. In the thickness direction of the filter holder, the abutment surface is higher than the opening of the supporting groove and is used to abut against the lens of the camera module. Thus, the abutment surface can abut against the lens to prevent collision between the lens and the filter element, thereby protecting the filter element and preventing damage. A clearance groove is provided on the boss, located on the side of the boss away from the supporting groove. In the thickness direction of the filter holder, the abutment surface is higher than the bottom wall of the clearance groove. Therefore, the clearance groove can be used to avoid interference between the motor housing and the filter bracket during assembly or dynamic calibration, so as to facilitate the adjustment of the position of the motor and the lens on the motor and ensure the image quality of the camera module. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the camera module provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the structure of the filter holder provided in the embodiments of this application;

[0030] Figure 3 for Figure 2 The diagram shows another angle of the filter holder structure.

[0031] Figure 4 for Figure 2 A schematic diagram of another angle structure of the filter holder shown;

[0032] Figure 5 for Figure 2 The filter holder shown is in cross-sectional view along direction AA;

[0033] Figure 6 for Figure 5 Enlarged schematic diagram of part A in the middle.

[0034] Explanation of icon numbers:

[0035] 1-Camera module;

[0036] 10-Housing; 20-Lens; 21-Lens barrel; 22-Lens; 30-Image sensor; 40-Printed circuit board; 50-Motor; 51-Motor housing; 52-Drive assembly; 60-Filter;

[0037] 70-Filter holder; 100-Support body; 110-First side; 120-Second side; 121-Wire groove; 130-Support groove; 131-Bottom wall of the support groove; 132-Side wall of the support groove; 132a-First side wall; 132b-Second side wall; 133-Avoidance notch; 140-Light passage; 200-Boss; 210-Abutting surface; 220-Avoidance groove; 221-Bottom wall of the avoidance groove; 222-Side wall of the avoidance groove; 300-Glue dispensing groove. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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 a part of the embodiments of this application, and not all possible embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0040] As used herein, terms such as “equal,” “parallel,” and “perpendicular” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, “equal” includes absolute equality and approximate equality, where an acceptable range of deviation for approximate equality may be, for example, a difference between the two equal items less than or equal to 5% of either one.

[0041] In the embodiments of this application, the directional indications used to explain the structure and movement of different components, such as up, down, left, right, front, and back, are relative. These indications are appropriate when the components are in the positions shown in the figures. However, if the description of the component positions changes, these directional indications will also change accordingly.

[0042] Please combine Figures 1 to 6 This application provides a filter bracket 70, which is applied to a camera module 1 and includes a support body 100 and a boss 200. The support body 100 has a first side 110 and a second side 120 spaced apart in the thickness direction of the filter bracket 70, and a support groove 130 provided on the first side 110. The bottom wall 131 of the support groove is provided with a light-transmitting opening 140, which penetrates the support body 100. The filter element 60 of the camera module 1 is provided on the bottom wall 131 of the support groove and covers the light-transmitting opening 140. The boss 200 is provided on the first side 110. The side of the boss 200 away from the support body 100 has an abutment surface 210. In the thickness direction of the filter bracket 70, the abutment surface 210 is higher than the opening of the support groove 130 and is used to abut against the lens 20 of the camera module 1. Therefore, the abutment surface 210 can abut against the lens 20 to prevent the lens 20 from colliding with the filter element 60, thereby protecting the filter element 60 and preventing damage to it. The boss 200 has a clearance groove 220 located on the side of the boss 200 away from the bearing groove 130. In the thickness direction of the filter holder 70, the abutment surface 210 is higher than the bottom wall 221 of the clearance groove. Thus, the clearance groove 220 can be used to avoid interference between the motor housing 51 and the filter holder 70 during assembly or dynamic calibration, facilitating the adjustment of the position of the motor 50 and the lens 20 on the motor 50, and ensuring the image quality of the camera module 1.

[0043] This application provides an electronic device, which may include at least one of the following: a mobile phone, camera, webcam, tablet computer, laptop computer, in-vehicle device, wearable device, virtual reality (VR) device, or augmented reality (AR) device, etc., all of which have shooting capabilities. This application does not limit the type of electronic device. The electronic device includes a camera module 1 and a device body. The camera module 1 is disposed on the device body, and the electronic device can acquire images through the camera module 1 to achieve functions such as taking photos, videos, or recording videos.

[0044] For example, in embodiments where the electronic device includes a mobile phone, the device body may include a mobile phone frame, and the camera module 1 may be mounted on the mobile phone frame. The camera module 1 may serve as a front-facing camera module 1 of the mobile phone, or it may serve as a rear-facing camera module 1 of the mobile phone. Of course, the electronic device in the embodiments of this application is not limited to a mobile phone.

[0045] Please refer to Figure 1This application provides a camera module 1, which includes a housing 10. The housing 10 is used to support and fix other devices inside the camera module 1 and to protect the other devices inside the camera module 1 so as to ensure that the camera module 1 works normally and stably.

[0046] The camera module 1 also includes a lens 20 and an image sensor 30. The lens 20 may include a lens 22 and a lens barrel 21. The lens 22 is disposed within the lens barrel 21 and is used to refract and converge light reflected from the scene being photographed. The lens barrel 21 is used to fix and protect the lens 22. In some implementations, the lens 22 may include at least one of a convex lens or a concave lens. There may be one lens 22, or multiple lenses 22 may be provided. In examples where there are multiple lenses 22, the optical axes of each lens 22 are collinear, and the lenses 22 may be spaced apart along the optical axis.

[0047] Image sensor 30 and lens 20 are spaced apart along the optical axis of lens 22. Image sensor 30 is used to receive light reflected from the object being photographed and convert the light signal into an electrical signal to realize functions such as taking pictures, taking pictures, or recording videos. In some implementations, image sensor 30 may include at least one of charge-coupled device (CCD) or complementary metal-oxide-semiconductor (CMOS) device. Image sensor 30 may be packaged on printed circuit board (PCB) in camera module 1.

[0048] The camera module 1 also includes a motor 50, which includes a motor housing 51 and a drive assembly 52. ​​The motor housing 51 is installed inside the housing 10 of the camera module 1, and the drive assembly 52 is located on the motor housing 51 and is used to drive the lens 20 to move relative to the image sensor 30 to achieve focusing or image stabilization.

[0049] In one example, the drive assembly 52 may include a drive coil and a drive magnet. One of the drive coil and the drive magnet is fixedly mounted to the motor housing 51, and the other is disposed on the lens 20, for example, on the lens barrel 21. The drive coil is configured to receive an input current to generate a magnetic field. The magnetic field generated by the drive coil interacts with the magnetic field of the drive magnet to produce an electromagnetic force, causing the drive magnet to move relative to the drive coil, thereby moving the lens 20 relative to the housing 10 and the image sensor 30 to achieve focusing or image stabilization.

[0050] In another example, the drive assembly 52 may include a guide rail and a slider slidably connected to the guide rail. One of the guide rail and the slider is fixedly mounted to the motor housing 51, and the other is disposed on the lens 20. Thus, as the slider slides on the guide rail, the lens 20 can move relative to the image sensor 30 to achieve focusing or image stabilization.

[0051] The camera module 1 also includes a filter element 60 and a filter holder 70. The filter element 60 is located between the lens 20 and the image sensor 30 and is used to filter invisible light such as infrared light to improve the imaging effect. The filter holder 70 is used to support the filter. The material used to make the filter element 60 may include at least one of optical glass or resin.

[0052] Please refer to Figure 1 , Figure 2 and Figure 3 This application provides a filter holder 70, the thickness direction of which can be parallel or approximately parallel to the optical axis of the lens 20. The filter holder 70 includes a support body 100, the support body 100 having a first side surface 110 and a second side surface 120 spaced apart in the thickness direction of the filter holder 70. Both the first side surface 110 and the second side surface 120 can be perpendicular or approximately perpendicular to the thickness direction of the filter holder 70, that is, both the first side surface 110 and the second side surface 120 can be perpendicular or approximately perpendicular to the optical axis of the lens 20.

[0053] The second side 120 of the carrier body 100 can be connected to the printed circuit board 40 in the camera module 1 for encapsulating the image sensor 30, so as to install the filter holder 70 inside the housing 10 of the camera module 1. A wire bonding groove 121 may be provided on the second side 120, with the bottom wall of the groove facing the printed circuit board 40 and spaced apart from it, thereby facilitating the soldering of gold wires onto the printed circuit board 40. In the thickness direction of the filter holder 70, the distance between the second side 120 and the bottom wall of the wire bonding groove 121 can be in the range of 80μm to 135μm, that is, the distance between the bottom wall of the wire bonding groove 121 and the printed circuit board 40 can be in the range of 80μm to 135μm.

[0054] The first side 110 of the support body 100 faces the motor 50 and lens 20 of the camera module 1. A support groove 130 is provided on the first side 110, and the bottom wall 131 of the support groove faces the lens 20 and can be parallel or approximately parallel to the first side 110. The bottom wall 131 of the support groove has a light-transmitting opening 140 that penetrates the support body 100. The light-transmitting opening 140 is located between the lens 20 and the image sensor 30, and is correspondingly positioned to both the lens 20 and the image sensor 30. Accordingly, the image side of the lens 20 faces the light-transmitting opening 140, and the image sensor 30 faces the light-transmitting opening 140.

[0055] like Figure 4 As shown, the cross-sectional shape of the support groove 130 is adapted to the shape of the filter element 60 to accommodate the filter element 60. For example, in the example where the filter element 60 is rectangular, the cross-section of the support groove 130 can also be rectangular. The filter element 60 is disposed at the bottom of the support groove 130 and covers the light transmission port 140. Correspondingly, the filter element 60 faces the lens 20, and the filter element 60 and the lens 20 are located on the same side of the filter holder 70. The image sensor 30 faces the filter element 60 and is located on the other side of the filter holder 70 relative to the filter element 60 and the lens 20. Thus, along the optical axis direction of the lens 20, that is, in the thickness direction of the filter holder 70, the lens 20, the filter element 60, and the image sensor 30 are arranged sequentially, with the filter element 60 located between the lens 20 and the image sensor 30. The light converged by the lens 20 can be transmitted to the image sensor 30 after passing through the filter element 60 and the light transmission port 140 in sequence.

[0056] In one embodiment, the carrier groove 130 has a first sidewall 132a and a second sidewall 132b. Alternatively, the sidewall 132 of the carrier groove can be understood as including a first sidewall 132a and a second sidewall 132b. An angle exists between the first sidewall 132a and the second sidewall 132b; for example, the first sidewall 132a may be perpendicular or approximately perpendicular to the second sidewall 132b. In an example where the filter is rectangular, the first sidewall 132a and the second sidewall 132b may correspond to one long side and one short side of the filter, respectively.

[0057] A clearance notch 133 is provided between the first sidewall 132a and the second sidewall 132b to correspond to one of the four corners of the filter. The clearance notch 133 protrudes outward from the sidewall 132 of the support groove to avoid the corner edge of the filter element 60, thus preventing the corner of the filter element 60 from colliding with and being damaged by the sidewall 132 of the support groove during assembly, thereby protecting the filter element 60.

[0058] In the above example, there are multiple clearance notches 133. For example, there can be four clearance notches 133, which can be located between any two adjacent sidewalls of the bearing groove 130 and respectively correspond to the four corners of the filter element 60.

[0059] In the above example, the filter element 60 can be bonded to the filter holder 70. For example, the camera module 1 has an adhesive layer that is bonded between the filter element 60 and the bottom wall 131 of the support groove to bond the filter element 60 to the filter holder 70.

[0060] The camera module 1 also has a dustproof adhesive layer, which can be bonded to the gap between the filter element 60 and the side wall 132 of the support groove to bond the filter element 60 to the filter holder 70 and prevent small particles such as dust, fibers or metal fragments from passing through the gap between the filter element 60 and the filter holder 70 and falling onto the image sensor 30, thereby ensuring image quality.

[0061] Please refer to Figure 2 , Figure 5 as well as Figure 6 The filter holder 70 also includes a boss 200 connected to the receiving body. The boss 200 is provided on the first side 110, and the side of the boss 200 facing away from the receiving body 100 has an abutment surface 210. It can also be understood that the boss 200 protrudes in the direction from the first side 110 toward the lens 20, and the side of the boss 200 near the lens 20 has an abutment surface 210.

[0062] In the thickness direction of the filter holder 70, the distance between the abutment surface 210 and the bottom wall 131 of the support groove is greater than the distance between the abutment surface 210 and the opening of the support groove 130, meaning the abutment surface 210 is higher than the opening of the support groove 130. Furthermore, in the thickness direction of the filter holder 70, the distance between the abutment surface 210 and the bottom wall 131 of the support groove is greater than the sum of the thicknesses of the filter element 60 and the adhesive layer. In other words, the abutment surface 210 is higher than the surface of the filter element 60 closest to the lens 20.

[0063] The contact surface 210 faces the lens 20 and can abut against the lens 20 to prevent the lens 20 from colliding with the filter element 60, thereby protecting the filter element 60 and preventing damage to it. For example, during a collision or drop test of the camera module 1, after the camera module 1 is bumped, the lens 20 may collide with the filter holder 70 and the filter element 60 due to inertia. Since the contact surface 210 is higher than the filter element 60, it can abut against the lens barrel 21 of the lens 20 to prevent the lens 22 in the lens 20 from colliding with the filter element 60. This provides simple and efficient protection for the filter element 60, reduces the risk of shooting function failure of the camera module 1 and electronic devices during daily use, improves user experience, and has strong practicality.

[0064] In the above example, the abutment surface 210 can be parallel to the first side surface 110, that is, the abutment surface 210 can be perpendicular or approximately perpendicular to the optical axis of the lens 20, so as to abut against the side of the lens barrel 21 near the filter 60, thereby protecting the filter 60.

[0065] In one embodiment, such as Figure 4As shown, the boss 200 extends along the edge of the groove of the bearing groove 130 and surrounds the outer edge of the groove opening of the bearing groove 130. Correspondingly, the abutment surface 210 extends along the extending direction of the boss 200 and surrounds the groove opening of the bearing groove 130. This increases the abutment area between the boss 200 and the lens 20, thereby preventing the lens 20 from colliding with the filter element 60 and protecting the filter element 60.

[0066] On the first side surface 110, there is a gap between the edge of the boss 200 near the support groove 130 and the groove edge of the support groove 130. That is, at least part of the first side surface 110 is connected between the side wall of the boss 200 and the side wall 132 of the support groove. With the above arrangement, it is convenient to apply adhesive between the filter 60 and the side wall 132 of the support groove to form a dustproof adhesive layer and protect the image sensor 30.

[0067] Correspondingly, such as Figure 6 As shown, the abutment surface 210, the side wall of the boss 200 near the bearing groove 130, the first side surface 110 connecting the side wall of the boss 200 and the side wall 132 of the bearing groove, and the bottom wall 131 of the bearing groove are connected in sequence and together form a "step" structure.

[0068] In one embodiment, the boss 200 forms a dispensing groove 300, which is located between the side wall of the boss 200 near the support groove 130 and the first side surface 110 adjacent to it. Accordingly, the dispensing groove 300 communicates with the support groove 130, and the bottom wall of the dispensing groove 300 includes the first side surface 110, which is at least partially connected between the side wall of the boss 200 and the side wall 132 of the support groove, and the bottom wall of the dispensing groove 300 is adjacent to the side wall 132 of the support groove.

[0069] The dispensing groove 300 and the carrier groove 130 are arranged in the thickness direction of the filter holder 70, with the dispensing groove 300 higher than the carrier groove 130. In the thickness direction of the filter holder 70, as... Figure 4 As shown, the projected shape of the dispensing groove 300 is the same as the projected shape of the carrier groove 130, and the projection of the dispensing groove 300 surrounds the projection of the carrier groove 130.

[0070] The dispensing groove 300 can be used to accommodate at least part of the dustproof adhesive layer. For example, during the dispensing process, after the adhesive fills the gap between the filter element 60 and the side wall 132 of the carrier groove, it can flow into the dispensing groove 300. After the adhesive cures to form a dustproof adhesive layer, at least part of the dustproof adhesive layer is located within the dispensing groove 300, and is situated between the side of the boss 200, the bottom wall of the dispensing groove 300, and the filter element 60.

[0071] The above-described design increases the volume of the dustproof adhesive layer and the bonding area between the filter element 60 and the filter holder 70. This ensures that the filter element 60 is firmly bonded to the filter holder 70 while preventing dust, fibers, or metal shavings from penetrating the gap between the filter element 60 and the filter holder 70 and falling onto the image sensor 30, thus improving the protection of the image sensor 30. Furthermore, it prevents adhesive from overflowing onto the contact surface 210 during the dispensing process.

[0072] Please combine Figure 2 and Figure 6 The boss 200 has a clearance groove 220, which is located on the side of the boss 200 away from the support groove 130 and corresponds to the motor housing 51 of the motor 50 in the camera module 1. In the thickness direction of the filter support 70, the abutment surface 210 is higher than the bottom wall 221 of the clearance groove. This can also be understood as the distance between the abutment surface 210 and the support body 100 being greater than the distance between the bottom wall 221 of the clearance groove and the support body 100. Correspondingly, the bottom wall 221 of the clearance groove is farther from the motor 50 than the abutment surface 210. Therefore, the clearance groove 220 can be used to avoid the motor 50, and at least a portion of the motor 50 can be located within the clearance groove 220. For example, the clearance groove 220 can be used to avoid the motor housing 51 from interfering with the filter bracket 70 during assembly or active alignment (AA) process, so as to facilitate the adjustment of the position of the motor 50 and the lens 20 on the motor 50 and ensure the image quality of the camera module 1.

[0073] In one example, the clearance groove 220 may be provided on the abutment surface 210. The clearance groove 220 has a clearance groove side wall 222 connected to the bottom wall 221 of the clearance groove. Both the clearance groove side wall 222 and the bottom wall 221 of the clearance groove are located on the side of the boss 200 away from the bearing groove 130. The clearance groove side wall 222 connects the bottom wall 221 of the clearance groove and the abutment surface 210. The abutment surface 210, the clearance groove side wall 222, and the bottom wall 221 of the clearance groove are connected in sequence and together form a "step" structure. The bottom wall 221 of the clearance groove may be parallel or approximately parallel to the abutment surface 210 and face the motor housing 51.

[0074] In one embodiment, the shapes of the clearance groove 220 and the clearance groove sidewall 222 are adapted to the shape of the motor housing 51 to avoid the motor housing 51, so as to facilitate the adjustment of the position of the motor 50 and the lens 20 on the motor 50 and ensure the image quality of the camera module 1.

[0075] In one embodiment, in the thickness direction of the filter holder 70, the height difference between the abutment surface 210 and the bottom wall 221 of the clearance groove is less than the height difference between the abutment surface 210 and the opening of the bearing groove 130. This facilitates the clearance groove 220 to avoid the motor housing 51, and also facilitates the adjustment of the position of the motor 50 and the lens 20 on the motor 50, ensuring the image quality of the camera module 1.

[0076] In some implementations, such as Figure 4 As shown, at least two clearance grooves 220 can be provided, and each clearance groove 220 can be respectively configured to correspond to different parts of the motor housing 51. In the direction parallel to the first side surface 110, each clearance groove 220 can be arranged at intervals, and the bearing groove 130 can be located between two clearance grooves 220 arranged at intervals.

[0077] For example, two clearance slots 220 may be provided, and the two clearance slots 220 may be spaced apart in the length direction of the filter holder 70. In the length direction of the filter holder 70, the two clearance slots 220 and the support slot 130 are arranged in sequence, with the support slot 130 located between the two clearance slots 220.

[0078] Of course, in other examples, the clearance slot 220 can also be set to three, four or other quantities.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some or as many of the technical features as possible; and these 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 application.

Claims

1. A filter holder, characterized in that, The filter holder is used in the camera module, and the filter holder includes: The carrier body has a first side and a second side spaced apart in the thickness direction of the filter support, and a carrier groove provided on the first side. The bottom wall of the carrier groove is provided with a light-transmitting opening, which penetrates the carrier body. The filter element of the camera module is provided on the bottom wall of the carrier groove and covers the light-transmitting opening. A boss is provided on the first side. The side of the boss away from the supporting body has an abutment surface. In the thickness direction of the filter bracket, the abutment surface is higher than the groove of the supporting groove and is used to abut against the lens of the camera module. The protrusion is provided with a relief groove, which is located on the side of the protrusion away from the bearing groove. In the thickness direction of the filter bracket, the abutment surface is higher than the bottom wall of the relief groove.

2. The filter holder according to claim 1, characterized in that, The contact surface is parallel to the first side surface, and the bottom wall of the clearance groove is parallel to the contact surface.

3. The filter holder according to claim 2, characterized in that, The clearance groove has a clearance groove sidewall, which is connected between the bottom wall of the clearance groove and the abutment surface, and the clearance groove sidewall is located on the side of the boss away from the bearing groove. The shape of the clearance groove and the shape of the sidewall of the clearance groove are adapted to the shape of the motor housing of the camera module and are used to avoid the motor housing.

4. The filter holder according to claim 2, characterized in that, In the thickness direction of the filter holder, the height difference between the abutment surface and the bottom wall of the clearance groove is less than the height difference between the abutment surface and the opening of the bearing groove.

5. The filter holder according to any one of claims 1 to 4, characterized in that, The clearance groove is provided in at least two, and each clearance groove is spaced apart in a direction parallel to the first side. The bearing groove is located between two clearance grooves that are spaced apart from each other.

6. The filter holder according to any one of claims 1 to 4, characterized in that, The boss is positioned outside the edge of the groove opening of the bearing groove, and there is a gap between the edge of the boss near the bearing groove and the edge of the groove opening.

7. The filter holder according to claim 6, characterized in that, The bosses form a dispensing groove, which is connected to the bearing groove, and the dispensing groove and the bearing groove are arranged in the thickness direction of the filter holder. In the thickness direction of the filter holder, the projected shape of the dispensing groove is the same as the projected shape of the carrier groove, and the projection of the dispensing groove surrounds the projection of the carrier groove. The camera module has a dustproof adhesive layer, which is bonded between the filter element and the filter support. The dispensing groove is used to accommodate at least a portion of the dustproof adhesive layer.

8. The filter holder according to claim 7, characterized in that, The carrier groove has a first sidewall and a second sidewall, with an included angle between the first sidewall and the second sidewall, and a clearance notch connecting the first sidewall and the second sidewall. The clearance notch protrudes outward from the sidewall of the carrier groove and is used to avoid the corner edge of the filter element.

9. A camera module, characterized in that, include: A lens, a filter element, an image sensor, and a filter holder according to any one of claims 1 to 8, wherein the filter element is disposed on the bottom wall of the support groove and covers the light-transmitting opening; the lens and the filter element are located on the same side of the filter holder, the image sensor is located on the other side of the filter holder opposite to the filter element, and the image sensor is disposed facing the light-transmitting opening, and the filter element is located between the lens and the image sensor; The contact surface faces the lens.

10. An electronic device, characterized in that, include: The device body and the camera module as described in claim 9, wherein the camera module is disposed on the device body.

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