Optical filter support, optical filter assembly, camera module and electronic equipment

Abstract

The embodiment of the utility model provides an optical filter support, an optical filter assembly, a camera module and electronic equipment, and relates to the technical field of camera modules. The optical filter support comprises a main body part. The main body part comprises a first end and a second end, the first end and the second end are located at the two ends of the main body part in the first direction respectively, a first cavity is formed in the main body part, the first end is provided with a light inlet hole, the second end is provided with a light outlet hole, the light inlet hole and the light outlet hole are oppositely arranged and communicate with the first cavity, and the first end or the second end is provided with an optical filter mounting structure. Wherein the inner wall of the first cavity is provided with a light weakening structure, and the light weakening structure is used for weakening light reflected to the light outlet hole through the inner wall of the first cavity. Therefore, the influence of stray light on imaging of the camera module can be weakened, and the cost of the camera module is low.

Description

Technical Field

[0001] This application relates to the field of camera module technology, and in particular to a filter holder, filter assembly, camera module and electronic device. Background Technology

[0002] Mobile phones, tablets, and other electronic devices often include camera modules, enabling these devices to take pictures.

[0003] In related technologies, light-attenuating structures are often incorporated into the lens assembly of a camera module or the motor system that drives the lens assembly to reduce the impact of stray light on the imaging of the camera module. However, in these related technologies, the motor system often has a large dimension along the optical axis of the lens assembly, resulting in a higher cost for the camera module. Utility Model Content

[0004] This application provides a filter holder, a filter assembly, a camera module, and an electronic device, which can reduce the impact of stray light on the imaging of the camera module while keeping the cost of the camera module lower.

[0005] A first aspect of this application provides a filter holder, which includes a main body. The main body includes a first end and a second end, which are respectively located at opposite ends of the main body in a first direction. The main body has a first chamber, the first end has a light entrance hole, and the second end has a light exit hole. The light entrance hole and the light exit hole are arranged opposite to each other and are both connected to the first chamber. A filter mounting structure is provided at either the first end or the second end. The inner wall of the first chamber is provided with a light weakening structure, which is used to reduce the light reflected from the inner wall of the first chamber to the light exit hole.

[0006] The filter holder provided in this embodiment weakens stray light by directing it onto a light-weakening structure on the inner wall of the first chamber. This means that only the stray light needs to illuminate the inner wall of the first chamber located near the photosensitive element of the motor system, not the inner wall of the motor system itself. This allows for a reduction in the size of the motor system along the optical axis of the lens assembly. Compared to the motor system, the filter holder has a simpler structure, lower manufacturing difficulty, and lower manufacturing cost. Reducing the size of the motor system along the optical axis of the lens assembly helps lower the cost of the camera module. Furthermore, the simple structure of the filter holder allows for greater flexibility in the shape and size of its cross-section perpendicular to the first direction. This facilitates designing the filter holder to avoid interference with other components within the electronic device. Reducing the size of the motor system along the optical axis of the lens assembly also reduces the space occupied by the camera module, facilitating the arrangement of the camera module and other components within the electronic device.

[0007] In one possible implementation, the light-attenuating structure includes a light-blocking structure protruding from the inner wall of the first chamber.

[0008] In this way, the light-blocking structure can block stray light, thereby changing its reflection direction and reducing the amount of stray light reflected to the light exit aperture, thus reducing stray light intensity. Furthermore, by changing the reflection direction of stray light through the light-blocking structure, even if some stray light can escape from the light exit aperture and be captured by the photosensitive element, the stray light emanating from the light exit aperture needs to undergo multiple reflections before reaching the light exit aperture. These multiple reflections weaken the energy of the stray light, thus reducing its intensity. In addition, using the reflection or blocking of the light-blocking structure to reduce stray light results in good reliability and reduces the likelihood of problems such as powder or lint shedding that affect the imaging of the camera module.

[0009] In one possible implementation, the light-blocking structure includes at least two light-blocking units arranged along a first direction.

[0010] In this way, multiple low-height light-blocking units arranged along the first direction can reduce stray light over a large area. While effectively reducing stray light, the light-blocking structure is less likely to block imaging light, which is beneficial for the photosensitive element to collect imaging light.

[0011] In one possible implementation, the top of the light-blocking unit is a curved surface or a sharp corner structure.

[0012] In this way, the top of the light-blocking unit can effectively diffuse the light, and stray light is less likely to be reflected directly to the light-emitting hole through the top of the light-blocking unit, which helps to reduce stray light.

[0013] In one possible implementation, the light-blocking structure is a sawtooth structure, comprising multiple teeth arranged along a first direction. In this case, each tooth is a light-blocking unit of the light-blocking structure.

[0014] In this way, the toothed light-blocking structure facilitates better dispersion of stray light, thereby reducing the amount of stray light transmitted to the light-emitting aperture and causing multiple reflections of the stray light, which helps to attenuate it. Furthermore, the top of the toothed light-blocking structure is an arc-shaped or sharp-angled structure, making it difficult for stray light to be directly reflected from the top of the light-blocking unit to the light-emitting aperture, further aiding in stray light attenuation. Additionally, the larger root dimension and smaller top dimension of the toothed light-blocking unit facilitates molding through methods such as draft molding, making it easier to form multiple light-blocking units arranged along the first direction on the inner wall of the first chamber.

[0015] In one possible implementation, the main body includes a first cavity wall and a second cavity wall, which are located on opposite sides of the first chamber in a second direction. At least one of the first and second cavity walls is provided with a light-weakening structure. The second direction is perpendicular to the first direction.

[0016] In this way, stray light can be weakened by directing it onto at least one of the first and second cavity walls. This facilitates the application of stray light to the first and second cavity walls, making it easier to weaken stray light on the filter holder. Furthermore, the light-weakening structures located on the first and second cavity walls are less likely to affect the imaging light reaching the photosensitive element, thus reducing stray light while simultaneously improving the photosensitive element's ability to collect imaging light.

[0017] In one possible implementation, the main body includes a first structural member and a second structural member. The first structural member has a first opening on one side in a second direction, and the second structural member is disposed at the first opening and fixed to the first structural member. The second structural member and the first structural member are used to enclose and form a first cavity. At least a portion of one of the first cavity wall and the second cavity wall is located on the first structural member, and at least a portion of the other of the first cavity wall and the second cavity wall is located on the second structural member. At least one of the first structural member and the second structural member is provided with a light-weakening structure.

[0018] In this way, it is relatively easy to set up light-weakening structures such as light-blocking structures on the first and second cavity walls.

[0019] In one possible implementation, the area of ​​the first structural member covered by the projection of the first opening along the second direction is provided with a light-weakening structure.

[0020] This facilitates operations such as drafting in the area of ​​the first structural member covered by the projection of the first opening along the second direction, making it easier to form light-weakening structures such as light-blocking structures on the first structural member.

[0021] In one possible implementation, the first opening is located between the first end and the second end.

[0022] In this way, the first opening will not affect the flatness of the end face of the first end and the end face of the second end, so as to facilitate the secure assembly of the first end and the second end with other components.

[0023] In one possible implementation, the first structural member includes a first sub-structural member and a second sub-structural member. The first sub-structural member has a first opening on one side in a second direction and a second opening on the other side in the second direction. The second structural member is fixed to the first sub-structural member, and is disposed at the second opening and fixed to the first sub-structural member. The first sub-structural member, the second sub-structural member, and the second structural member are used to enclose and form a first cavity. At least a portion of one of the first cavity wall and the second cavity wall is located in the second sub-structural member. Both the second structural member and the second sub-structural member are provided with light-weakening structures.

[0024] In this way, it is relatively easy to set up light-weakening structures on the first and second cavity walls.

[0025] In one possible implementation, the first structural component includes a plastic component and a metal component, with at least a portion of the metal component encasing the plastic component, and the plastic component and the metal component forming an integral structure.

[0026] In this way, the metal parts can improve the strength of the first structural component and reduce the impact of opening the first opening on the strength of the first structural component. This makes it easier to form a light-weakening structure in the first cavity wall and the second cavity wall, while also enabling the first structural component to have high strength.

[0027] In one possible implementation, the second end is provided with a support structure located on the side of the second end away from the first end. The support structure and the second end enclose a second chamber. The light outlet connects the first chamber and the second chamber. The filter mounting structure is provided at the second end and located within the second chamber.

[0028] In this way, the first chamber, due to its light-weakening structure, is difficult to clean thoroughly. The filter located at the second end separates the first chamber from the photosensitive element, preventing uncleaned impurities from falling onto the photosensitive element and affecting the performance of the camera module. Furthermore, the support structure facilitates the spacing between the filter and the photosensitive element.

[0029] In one possible implementation, the light-weakening structure includes at least one of a diffuse reflection structure and a light-absorbing structure.

[0030] In this way, stray light can be reduced by causing diffuse reflection or absorbing stray light.

[0031] A second aspect of this application provides a filter assembly, which includes a filter and a filter holder as described in any of the above embodiments. The filter is fixedly disposed on the filter holder in a filter mounting structure.

[0032] A third aspect of this application provides a camera module, which includes a lens assembly, a photosensitive element, and a filter assembly as described in any of the above embodiments. Both the filter assembly and the photosensitive element are disposed on the image side of the lens assembly, and the filter of the filter assembly is disposed between the lens assembly and the photosensitive element.

[0033] In one possible implementation, the equivalent focal length of the camera module is greater than or equal to 70mm.

[0034] This allows the camera module to have a longer back focal length, which facilitates the weakening of stray light by setting a light-weakening structure within the filter holder.

[0035] In one possible implementation, the back focal length of the camera module is greater than or equal to 1.4mm.

[0036] This allows the camera module to have a longer back focal length, which facilitates the weakening of stray light by setting a light-weakening structure within the filter holder.

[0037] In one possible implementation, the photosensitive element has an image-emitting photosensitive area. The projection of the light-blocking structure of the filter assembly along a first direction is located outside the projection of the image-emitting photosensitive area along the first direction, and the distance between the projection of the light-blocking structure along the first direction and the projection of the image-emitting photosensitive area along the first direction is greater than 0.15 mm.

[0038] In this way, while effectively reducing stray light, the light-blocking structure is less likely to obstruct the imaging light, which is beneficial for the image-sensing area to collect the imaging light.

[0039] In one possible implementation, the camera module further includes a motor system. A lens assembly is disposed within the motor system, and a first end of a filter assembly is connected to the motor system. An abutment structure is formed between the outer wall of the filter holder of the filter assembly and the outer wall of the motor system.

[0040] In this way, without affecting the function of the camera module, it is easy to avoid other components in the electronic device, so as to facilitate the arrangement of the camera module and other components in the electronic device.

[0041] A fourth aspect of this application provides an electronic device, which includes a housing and a camera module as described in any of the above embodiments, the camera module being disposed in the housing. Attached Figure Description

[0042] Figure 1 An exploded view of an electronic device provided in an embodiment of this application;

[0043] Figure 2 A cross-sectional schematic diagram of a camera module provided in an embodiment of this application;

[0044] Figure 3 A cross-sectional schematic diagram of another camera module provided in the embodiments of this application;

[0045] Figure 4 A cross-sectional schematic diagram of another camera module provided in the embodiments of this application;

[0046] Figure 5 A cross-sectional schematic diagram of a filter holder and a photosensitive element provided in an embodiment of this application;

[0047] Figure 6 for Figure 5 An exploded view of the filter holder provided in the diagram;

[0048] Figure 7 for Figure 5 Another exploded view of the filter holder provided in the diagram;

[0049] Figure 8 An exploded view of a filter assembly provided in an embodiment of this application;

[0050] Figure 9 for Figure 8 A cross-sectional schematic diagram of the filter assembly provided in the document;

[0051] Figure 10 An exploded view of another filter holder provided in the embodiments of this application;

[0052] Figure 11 for Figure 10 A cross-sectional schematic diagram of the filter holder provided in the document;

[0053] Figure 12 An exploded view of another filter holder provided in the embodiments of this application;

[0054] Figure 13 for Figure 12 A cross-sectional schematic diagram of the filter holder provided in the document;

[0055] Figure 14 An exploded view of another filter holder provided in the embodiments of this application;

[0056] Figure 15 for Figure 14 A cross-sectional schematic diagram of the filter holder provided in the diagram.

[0057] Explanation of reference numerals in the attached figures:

[0058] 10. Housing; 11. Back cover; 12. Mid-frame; 20. Display screen; 30. Camera module; 31. Lens assembly; 32. Motor system; 33. Module circuit board; 34. Image sensor; 35. Optical path conversion component; 36. Filter assembly; 36a. Filter; 36b. Filter holder; 37. Clearance structure; 40. Battery; 50. Mainboard;

[0059] 100. Main body; 110. First end; 120. Second end; 130. First cavity wall; 140. Second cavity wall; 150. First structural component; 151. Plastic part; 152. Metal part; 152a. First metal part; 152b. Second metal part; 153. First sub-structural component; 154. Second sub-structural component; 160. Second structural component; 170. Third structural component; 180. Connector; 190. Bearing component;

[0060] 200. Light-attenuating structure; 210. Light-blocking structure; 211. Light-blocking unit;

[0061] 310, First chamber; 320, Light entrance aperture; 330, Light exit aperture; 340, Second chamber; 350, First opening; 360, Second opening;

[0062] 410. Filter mounting structure; 420. Support structure;

[0063] S1, the light-sensitive area for image output;

[0064] x, first direction; y, second direction; z, third direction; Detailed Implementation

[0065] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. The implementation of the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0066] This application provides an electronic device, which may include, but is not limited to, mobile phones, tablets, laptops, ultra-mobile personal computers (UMPCs), handheld computers, walkie-talkies, netbooks, point-of-sale (POS) machines, personal digital assistants (PDAs), wearable devices, virtual reality devices, etc. The electronic device may be a foldable device, such as a foldable mobile phone. Alternatively, the electronic device may be a non-foldable device, such as a candybar mobile phone.

[0067] Figure 1 This is an exploded view of an electronic device provided in an embodiment of this application.

[0068] like Figure 1 As shown in the embodiment of this application, the electronic device includes a housing 10 and a camera module 30. The camera module 30 is disposed on the housing 10, and the housing 10 can serve to support and protect the camera module 30. The camera module 30 is used to capture images.

[0069] In some examples, the electronic device may also include a display screen 20 disposed on a housing 10, the display screen 20 and the housing 10 being used to enclose a device mounting cavity, and at least a portion of a camera module 30 being disposed within the device mounting cavity enclosed by the display screen 20 and the housing 10.

[0070] In other examples, the electronic device may also include a housing 10 but not a display screen 20, the housing 10 may be self-enclosed to form a device mounting cavity, and at least a portion of the camera module 30 may be disposed within the device mounting cavity formed by the housing 10 itself.

[0071] The following description uses an electronic device, including a display screen 20 and a housing 10, as an example.

[0072] like Figure 1 As shown, for example, the housing 10 may include a middle frame 12 and a rear cover 11. The rear cover 11 and the display screen 20 are respectively covered on both sides of the middle frame 12. The rear cover 11, the middle frame 12 and the display screen 20 surround to form a device mounting cavity. The camera module 30 can be fixed to the middle frame 12, and the middle frame 12 can support the camera module 30.

[0073] In some examples, the middle frame 12 and the back cover 11 can be separate structures, and the middle frame 12 and the back cover 11 can be fixedly connected by means of adhesive, snap-fit, fastener connection, etc.

[0074] In other examples, the middle frame 12 and the back cover 11 can also be a single structure, that is, the middle frame 12 and the back cover 11 can be integrated into a single structural component.

[0075] For example, the electronic device also includes a motherboard 50 and a battery 40, both of which are housed within the housing 10. The battery 40 is electrically connected to the motherboard 50, and the motherboard 50 is electrically connected to the camera module 30. When the electronic device includes a display screen 20, the motherboard 50 is also electrically connected to the display screen 20.

[0076] For example, the motherboard 50 and the battery 40 can be fixedly mounted on the middle frame 12.

[0077] Figure 2 This is a cross-sectional schematic diagram of a camera module provided in an embodiment of this application.

[0078] like Figure 2As shown in this embodiment, the camera module 30 may include a lens assembly 31, a filter assembly 36, a module circuit board 33, and a photosensitive element 34. The module circuit board 33 is electrically connected to the main board 50 and may be fixed to the main board 50 or the mid-frame 12. The photosensitive element 34 is disposed on and electrically connected to the module circuit board 33. The filter assembly 36 is fixedly disposed on the module circuit board 33 and may cover the outside of the photosensitive element 34. Both the filter assembly 36 and the photosensitive element 34 are disposed on the image side of the lens assembly 31. Specifically, the filter assembly 36 includes a filter holder 36b and a filter 36a. The filter 36a is fixedly disposed on the module circuit board 33 through the filter holder 36b. The photosensitive element 34 is disposed inside the filter holder 36b, and the filter 36a is disposed between the lens assembly 31 and the photosensitive element 34. Light from the object side of the lens assembly 31 passes through the lens assembly 31 and the filter 36a and then reaches the photosensitive element 34, allowing the photosensitive element 34 to collect the light from the object side of the lens assembly 31 to achieve the shooting function. The filter 36a filters the light to optimize the quality of the light hitting the photosensitive element 34, thereby improving the image quality of the camera module 30.

[0079] The photosensitive element 34 can also be called an image sensor. The photosensitive element 34 can be a charge-coupled device (CCD), a complementary metal-oxide-semiconductor (CMOS), or other devices that can realize photoelectric conversion.

[0080] The lens assembly 31 may include multiple lenses arranged along the optical axis of the lens assembly 31.

[0081] The image side of lens assembly 31 and its lens refers to the side where the image of the subject is located, with the object being described as the boundary. The image side of lens assembly 31 and its lens refers to the surface of the object being described that is closer to the image of the subject.

[0082] The object side of lens assembly 31 and its lens refers to the side where the subject is located, with the object being described as the boundary. The object side surface of lens assembly 31 and its lens refers to the surface of the object being described that is closer to the subject.

[0083] Figure 3 This is a cross-sectional schematic diagram of another camera module provided in an embodiment of this application. In the figure, the x-direction is a first direction, the y-direction is a second direction, and the first direction can be perpendicular to the second direction.

[0084] like Figure 3 As shown, in some examples, the camera module 30 may also include a light path conversion component 35. The light path conversion component 35 may be disposed on the object side of the lens assembly 31. The light path conversion component 35 is used to fold and turn the light path before it enters the lens assembly 31. The light from the light-incident side of the light path conversion component 35 is turned by the light path conversion component 35 and then enters the lens assembly 31. This can make the overall light path of the camera module 30 longer while making the size of the camera module 30 smaller in the light-incident direction.

[0085] For example, the optical path conversion component 35 may include a reflecting component, and the emitting component may reflect light rays from the incident light side of the optical path conversion component 35 to achieve folding and redirection of the optical path. The reflecting component may include, but is not limited to, a prism, a plane mirror, etc. For example, the optical path conversion component 35 may include a triangular prism.

[0086] For example, the camera module 30 can be a telephoto camera module, which often has a long back focal length and is commonly used for shooting distant scenes.

[0087] like Figure 3 As shown, the back focal length of the camera module 30 is L1. The back focal length of the camera module 30 refers to the distance between the image side of the lens closest to the photosensitive element 34 in the lens assembly 31 and the imaging surface of the photosensitive element 34.

[0088] For example, the first direction can be the optical axis direction of the lens assembly 31, and the optical path conversion component 35, lens assembly 31, filter 36a, and photosensitive element 34 can be arranged along the first direction. The light-incident surface of the optical path conversion component 35 can face one side of the second direction, so that light from the second direction can be converted by the optical path conversion component 35, pass through the lens assembly 31 and filter 36a along the first direction, and illuminate the photosensitive element 34. In this way, the overall optical path of the camera module 30 can be longer while the size of the camera module 30 in the second direction is smaller.

[0089] For example, the second direction can be the thickness direction of the electronic device, so as to facilitate the arrangement of a camera module 30 with a longer optical path in a thinner electronic device. For example, a telephoto camera module can be conveniently arranged in a thinner electronic device.

[0090] In some examples, the camera module 30 may also include a motor system 32, with the lens assembly 31 disposed within the motor system 32. When the camera module 30 includes an optical path conversion component 35, the optical path conversion component 35 may also be disposed within the motor system 32. The filter holder 36b and the motor system 32 are separate structures. The end of the filter holder 36b away from the module circuit board 33 is connected to the end of the motor system 32 near the module circuit board 33, allowing the motor system 32 to be connected to the module circuit board 33 via the filter holder 36b. The motor system 32 is used to drive at least one action of the lens assembly 31 and the optical path conversion component 35 to achieve functions such as autofocus (AF), zoom, and optical image stabilization (OIS).

[0091] The length direction of the motor system 32 can be the same as the optical axis direction of the lens assembly 31; that is, the first direction can be the length direction of the motor system 32. The motor system 32, the filter holder 36b, and the module circuit board 33 can be arranged along the first direction, and the second direction can be the height direction of the motor system 32.

[0092] As the camera module 30 continues to become smaller, the cross-sectional size of the motor system 32 in the direction perpendicular to the optical axis of the lens assembly 31 continues to decrease. This makes it easier for stray light entering the camera module 30 to be reflected at a large angle within the camera module 30, which in turn makes the photosensitive element 34 more susceptible to strong stray light irradiation. Strong stray light irradiation of the photosensitive element 34 will have a significant impact on the imaging effect of the camera module 30.

[0093] To mitigate the impact of stray light on the imaging of the camera module, related technologies often incorporate light-attenuating structures within the lens assembly or motor system. In other words, these structures are located at the motor system to reduce the amount of light reflected from the lens assembly or motor system onto the photosensitive element, thus achieving stray light reduction at the motor system level. However, in these technologies, for stray light to effectively illuminate and be attenuated by the light-attenuating structure located at the motor system, the motor system needs to have a relatively large size along the optical axis of the lens assembly. The motor system requires drive, guide, and transmission structures, making its manufacturing relatively difficult and costly. A larger motor system increases the cost of the camera module. Furthermore, to accommodate these drive, guide, and transmission structures, the cross-sectional dimensions of the motor system perpendicular to the optical axis of the lens assembly are also relatively large. This results in a larger motor system occupying more space, which is detrimental to the placement of the camera module and other components within the electronic device.

[0094] like Figure 3As shown, based on this, in this embodiment of the application, the filter holder 36b includes a main body 100. The main body 100 includes a first end 110 and a second end 120, which are located at opposite ends of the main body 100 in a first direction. The first end 110 is connected to the motor system 32, and the second end 120 is the end of the main body 100 closest to the module circuit board 33. The main body 100 has a first chamber 310, the first end 110 has a light entrance hole 320, and the second end 120 has a light exit hole 330. The light entrance hole 320 and the light exit hole 330 are arranged opposite to each other and are both connected to the first chamber 310. Light emitted from the lens assembly 31 can pass through the light entrance hole 320, the first chamber 310, and the light exit hole 330 before reaching the photosensitive element 34. The first end 110 or the second end 120 is provided with a filter mounting structure 410. The filter mounting structure 410 is used to assemble the filter 36a. The filter 36a is fixedly set on the filter mounting structure 410. That is to say, the filter 36a is fixedly set on the first end 110 or the second end 120 through the filter mounting structure 410. By setting the filter mounting structure 410, it is easy to achieve a stable assembly of the filter 36a and the filter bracket 36b.

[0095] When the filter mounting structure 410 is located at the first end 110, the filter 36a is located at the first end 110 and covers the light inlet 320.

[0096] When the filter mounting structure 410 is located at the second end 120, the filter 36a is located at the second end 120 and covers the light outlet 330.

[0097] For example, the lens assembly 31, the light entrance aperture 320, the light exit aperture 330, and the photosensitive element 34 can be arranged coaxially.

[0098] For example, the filter mounting structure 410 may include a groove structure, in which the filter 36a may be installed. The groove structure can serve to position and protect the filter 36a.

[0099] When the filter mounting structure 410 is located at the first end 110, the light inlet 320 is located at the bottom of the groove structure.

[0100] When the filter mounting structure 410 is located at the second end 120, the light outlet 330 is located at the bottom of the groove structure.

[0101] like Figure 3As shown in the embodiment of this application, the inner wall of the first chamber 310 is provided with a light weakening structure 200. The light weakening structure 200 is used to weaken the light reflected from the inner wall of the first chamber 310 to the light outlet 330. In other words, the light weakening structure 200 can be used to weaken the light reflected from the inner wall of the first chamber 310 and irradiated to the photosensitive element 34 through the light outlet 330.

[0102] In this way, stray light can be weakened by directing it onto the light-weakening structure 200 located on the inner wall of the first chamber 310. In other words, stray light weakening can be achieved at the filter holder 36b. At this point, it is only necessary for stray light to be directed onto the inner wall of the first chamber 310 located on the side of the motor system 32 closest to the photosensitive element 34, rather than onto the inner wall of the motor system 32 itself. This allows for a reduction in the size of the motor system 32 along the optical axis of the lens assembly 31. Compared to the motor system 32, the filter holder 36b has a simpler structure, lower manufacturing difficulty and cost. Reducing the size of the motor system 32 along the optical axis of the lens assembly 31 further reduces the cost of the camera module 30. Furthermore, since the structure of the filter holder 36b is relatively simple, the shape and size of the cross section perpendicular to the first direction of the filter holder 36b are more flexible. This makes it easier to avoid other components in the electronic device by designing the shape and size of the filter holder 36b. The space occupied by the camera module 30 can be reduced by reducing the size of the motor system 32 in the optical axis direction of the lens assembly 31, which is beneficial to the arrangement of the camera module 30 and other components in the electronic device.

[0103] For example, the camera module 30 can be a telephoto camera module without macro function. The telephoto camera module without macro function can have a shorter motor system 32 and a longer back focal length, so that while the length of the motor system 32 is short, the light weakening structure 200 provided in the first chamber 310 of the filter bracket 36b can weaken stray light.

[0104] In some possible implementations, the main body 100 includes a first cavity wall 130 and a second cavity wall 140, which are located on both sides of the first chamber 310 in a second direction, and at least one of the first cavity wall 130 and the second cavity wall 140 is provided with a light weakening structure 200.

[0105] In this way, stray light can be weakened by directing it onto at least one of the first cavity wall 130 and the second cavity wall 140. This facilitates the application of stray light to the first and second cavity walls 130, making it easier to weaken stray light on the filter holder 36b. Furthermore, the light-weakening structure 200 located on the first and second cavity walls 130 and 140 is less likely to affect the imaging light's illumination of the photosensitive element 34. While weakening stray light, this also facilitates the acquisition of imaging light by the photosensitive element 34.

[0106] The imaging ray refers to the ray that enables the camera module 30 to form the target image.

[0107] The first cavity wall 130 and the second cavity wall 140 are respectively the cavity walls on both sides of the first chamber 310 in the second direction. In some examples where the camera module 30 includes the optical path conversion component 35, the first cavity wall 130 may be located on the side of the first chamber 310 closer to the light-incident direction of the camera module 30, and in this case, the second cavity wall 140 is located on the side of the first chamber 310 away from the light-incident direction of the camera module 30. In other examples, the first cavity wall 130 may be located on the side of the first chamber 310 away from the light-incident direction of the camera module 30, and in this case, the second cavity wall 140 is located on the side of the first chamber 310 closer to the light-incident direction of the camera module 30. This application embodiment is described using the example of the first cavity wall 130 being located on the side of the first chamber 310 away from the light-incident direction of the camera module 30 and the second cavity wall 140 being located on the side of the first chamber 310 closer to the light-incident direction of the camera module 30.

[0108] In some examples, one of the first cavity wall 130 and the second cavity wall 140 is provided with a light weakening structure 200, while the other of the first cavity wall 130 and the second cavity wall 140 is not provided with a light weakening structure 200. For example, the first cavity wall 130 is provided with a light weakening structure 200, while the second cavity wall 140 is not provided with a light weakening structure 200.

[0109] In other examples, both the first cavity wall 130 and the second cavity wall 140 are provided with light weakening structures 200.

[0110] In some possible implementations, the equivalent focal length of the camera module 30 is greater than or equal to 70mm.

[0111] This allows the camera module 30 to have a longer back focal length, which facilitates the weakening of stray light by setting a light weakening structure 200 within the filter holder 36b.

[0112] For example, the equivalent focal length of the camera module 30 can be greater than or equal to 100mm.

[0113] In some possible implementations, the back focal length L1 of the camera module 30 is greater than or equal to 1.4mm.

[0114] In this way, the camera module 30 has a longer back focal length, so that stray light can be weakened by setting a light weakening structure 200 in the filter bracket 36b.

[0115] For example, the back focal length L1 of the camera module 30 can be greater than or equal to 1.5mm.

[0116] In some possible implementations, a clearance structure 37 is formed between the outer wall of the filter holder 36b and the outer wall of the motor system 32.

[0117] In this way, without affecting the function of the camera module 30, it is easy to avoid other components in the electronic device, so as to facilitate the arrangement of the camera module 30 and other components in the electronic device.

[0118] For example, the avoidance structure 37 can be used to avoid various devices such as chips set on the motherboard 50.

[0119] In some examples, the outer wall of the side where the first cavity wall 130 of the filter holder 36b is located is spaced apart from the outer wall of the motor system 32 in the second direction to form a clearance structure 37 between the outer wall of the side where the first cavity wall 130 of the filter holder 36b is located and the outer wall of the motor system 32.

[0120] In some examples, the outer wall of the side where the second cavity wall 140 of the filter holder 36b is located is spaced apart from the outer wall of the motor system 32 in the second direction to form a clearance structure 37 between the outer wall of the side where the second cavity wall 140 of the filter holder 36b is located and the outer wall of the motor system 32.

[0121] like Figure 3 As shown, in some possible implementations, the light weakening structure 200 includes a light-blocking structure 210 protruding from the inner wall of the first chamber 310.

[0122] In this way, the light-blocking structure 210 can block stray light, thereby changing the reflection direction of the stray light and reducing the amount of stray light reflected to the light-emitting aperture 330, thus reducing stray light intensity. Furthermore, after the light-blocking structure 210 changes the reflection direction of the stray light, even if some stray light can be emitted from the light-emitting aperture 330 and collected by the photosensitive element 34, the stray light emitted from the light-emitting aperture 330 needs to undergo multiple reflections before reaching the light-emitting aperture 330. Multiple reflections weaken the energy of the stray light, thus reducing its intensity. In addition, by using the reflection or blocking of the light-blocking structure 210 to reduce stray light, the light-blocking structure 210 has good reliability and is less prone to problems such as powder shedding or lint shedding that affect the imaging of the camera module 30.

[0123] For example, the light-blocking structure 210 can be made of plastic, which makes the light-blocking structure 210 have a low reflectivity, which is beneficial for weakening stray light.

[0124] In some possible implementations, the light-blocking structure 210 includes at least two light-blocking units 211 arranged along a first direction.

[0125] In this way, multiple low-height light-blocking units 211 arranged along the first direction can reduce stray light in a large area. While the stray light reduction effect is good, the light-blocking structure 210 is not likely to block the imaging light, which is beneficial for the photosensitive element 34 to collect the imaging light.

[0126] The height of the light-blocking unit 211 refers to the distance between the root and the top of the light-blocking unit 211. The root of the light-blocking unit 211 is the part of the light-blocking unit 211 that is connected to the cavity wall of the first chamber 310, and the top of the light-blocking unit 211 is the end away from the root of the light-blocking unit 211.

[0127] In some examples, all the light-blocking units 211 of the light-blocking structure 210 may have the same height.

[0128] In other examples, the heights of the multiple light-blocking units 211 of the light-blocking structure 210 may be different, and the height of each light-blocking unit 211 can be determined according to actual needs.

[0129] For example, along the first direction, the height of the light-blocking unit 211 of the light-blocking structure 210 gradually increases from the end of the light-blocking structure 210 near the lens assembly 31 to the end of the light-blocking structure 210 away from the lens assembly 31.

[0130] For example, along the first direction, the height of the light-blocking unit 211 of the light-blocking structure 210 gradually decreases from the end of the light-blocking structure 210 near the lens assembly 31 to the end of the light-blocking structure 210 away from the lens assembly 31.

[0131] For example, along the first direction, from the light-blocking unit 211 located in the middle of the light-blocking structure 210 to the light-blocking units 211 located at both ends of the light-blocking structure 210, the height of the light-blocking unit 211 of the light-blocking structure 210 gradually increases.

[0132] For example, along the first direction, from the light-blocking unit 211 located in the middle of the light-blocking structure 210 to the light-blocking units 211 located at both ends of the light-blocking structure 210, the height of the light-blocking unit 211 of the light-blocking structure 210 gradually decreases.

[0133] In some possible implementations, the top of the light-blocking unit 211 is an arc-shaped structure or a sharp-cornered structure.

[0134] In this way, the top of the light-blocking unit 211 can effectively disperse the light, and stray light is not easily reflected directly to the light-emitting hole 330 through the top of the light-blocking unit 211, which helps to reduce stray light.

[0135] In some possible implementations, the light-blocking structure 210 is a sawtooth structure, comprising a plurality of teeth arranged along a first direction. In this case, each tooth is a light-blocking unit 211 of the light-blocking structure 210.

[0136] In this way, the toothed light-blocking structure 210 facilitates better dispersion of stray light, thereby reducing the amount of stray light transmitted to the light-emitting aperture 330 and causing multiple reflections of the stray light, which helps to weaken the stray light. In addition, the top of the toothed light-blocking structure 210 is an arc-shaped or sharp-angled structure, which makes it difficult for stray light to be directly reflected to the light-emitting aperture 330 through the top of the light-blocking unit 211, which helps to weaken the stray light. Furthermore, the root size of the toothed light-blocking unit 211 is larger and the top size is smaller, which makes it easier to form multiple light-blocking units 211 arranged along the first direction on the inner wall of the first chamber 310 by means of molding or other methods.

[0137] For example, the light-blocking unit 211 can be a strip structure extending along a third direction to facilitate light blocking over a large area in the third direction. The third direction is perpendicular to the second direction and perpendicular to the first direction.

[0138] In some examples where the light-blocking structure 210 is a sawtooth structure, the multiple teeth of the light-blocking structure 210 can be arranged continuously along the first direction, that is, the roots of two adjacent teeth of the light-blocking structure 210 are connected.

[0139] In other examples where the light-blocking structure 210 is a sawtooth structure, the multiple teeth of the light-blocking structure 210 may also be arranged at intervals along the first direction, that is, there is a gap between the roots of two adjacent teeth of the light-blocking structure 210.

[0140] For example, the spacing between two adjacent teeth of the light-blocking structure 210 can be the same or different. The spacing between two adjacent teeth of the light-blocking structure 210 can be determined based on the height of the tooth closer to the first end 110 among the two adjacent teeth. The higher the height of the tooth closer to the first end 110 among the two adjacent teeth, the larger the spacing between the two adjacent teeth can be.

[0141] In some other possible implementations, the light-blocking unit 211 may also be a prismatic structure.

[0142] For example, at least one of the first cavity wall 130 and the second cavity wall 140 may be provided with a light-blocking structure 210.

[0143] In some possible implementations, the light-weakening structure 200 may include a diffuse reflection structure.

[0144] In this way, stray light can be diffused and dispersed, thereby reducing its intensity.

[0145] For example, a diffuse reflection structure can be a surface rough structure or a composite layer structure with multiple layers of different refractive indices. For instance, a diffuse reflection structure can be a flocked structure.

[0146] In some possible implementations, the light-weakening structure 200 may include a light-absorbing structure.

[0147] In this way, stray light can be reduced by absorbing it.

[0148] For example, the light-absorbing structure can be a black ink layer structure.

[0149] For example, the light weakening structure 200 may include at least one of the light blocking structure 210, the diffuse reflection structure, and the light absorbing structure.

[0150] For example, the surface of the light-blocking structure 210 may be provided with a light-absorbing structure.

[0151] like Figure 3 As shown, in some examples, the filter mounting structure 410 is located at the first end 110, that is, the filter 36a is located at the first end 110 through the filter mounting structure 410. In this way, the filter 36a and the photosensitive element 34 can be spaced apart through the first chamber 310.

[0152] In some examples, the second end 120 is provided with a support structure 420, which is located on the side of the second end 120 away from the first end 110. The support structure 420 is connected to the module circuit board 33, so that the second end 120 is fixedly mounted on the module circuit board 33 through the support structure 420. The support structure 420 and the second end 120 form a second chamber 340. The light-emitting hole 330 connects the first chamber 310 and the second chamber 340. The photosensitive element 34 can be disposed in the second chamber 340.

[0153] For example, the support structure 420 and the second end 120 can be an integral structure.

[0154] In some examples where the filter 36a is located at the first end 110 via the filter mounting structure 410, the second end 120 may not have a support structure 420. The second end 120 may be connected to the module circuit board 33, and the photosensitive element 34 may be located inside the light-emitting hole 330.

[0155] Figure 4 A cross-sectional schematic diagram of another camera module provided in the embodiments of this application.

[0156] like Figure 4 As shown, in some other examples, the filter mounting structure 410 is located at the second end 120, that is, the filter 36a is located at the second end 120 via the filter mounting structure 410. In this case, the second end 120 is provided with a support structure 420, the filter mounting structure 410 is located within the second chamber 340, and the filter 36a is spaced apart from the photosensitive element 34 via the support structure 420.

[0157] In this way, the first chamber 310 is difficult to clean because of the light weakening structure 200. The filter 36a located at the second end 120 can separate the first chamber 310 from the photosensitive element 34, so that the impurities that are not cleaned in the first chamber 310 are not likely to fall onto the photosensitive element 34 and affect the performance of the camera module 30.

[0158] Impurities that were not properly cleaned in the first chamber 310 can be easily cleaned after falling onto the filter 36a. However, if they fall onto the photosensitive element 34, it is more difficult to clean the impurities from the photosensitive element 34.

[0159] Figure 5 This is a cross-sectional schematic diagram of a filter holder and a photosensitive element provided in an embodiment of this application.

[0160] In some possible implementations, the photosensitive element 34 has an image-emitting photosensitive area S1. The projection of the light-blocking structure 210 along the first direction is located outside the projection of the image-emitting photosensitive area S1 along the first direction, and the distance between the projection of the light-blocking structure 210 along the first direction and the projection of the image-emitting photosensitive area S1 along the first direction is L2, where L2 is greater than 0.15 mm.

[0161] In this way, while effectively reducing stray light, the light-blocking structure 210 is less likely to obstruct the imaging light, which is beneficial for the image-sensing area S1 to collect the imaging light.

[0162] The output photosensitive area S1 refers to the portion of the photosensitive area of ​​the photosensitive element 34 actually used to form and output an image. The output photosensitive area S1 can be the entire photosensitive area of ​​the photosensitive element 34, or it can be a portion of the photosensitive area of ​​the photosensitive element 34. When the output photosensitive area S1 is a portion of the photosensitive area of ​​the photosensitive element 34, the photosensitive area of ​​the photosensitive element 34 may also include a non-output photosensitive area, which may be located outside the output photosensitive area S1.

[0163] For example, when the photosensitive area of ​​the photosensitive element 34 includes the image-emitting photosensitive area S1 and the non-image-emitting photosensitive area, the projection of the light-blocking structure 210 along the first direction can coincide with the projection portion of the non-image-emitting photosensitive area along the first direction.

[0164] For example, software can be used to set all or part of the photosensitive area of ​​the photosensitive element 34 as the image output photosensitive area S1.

[0165] When the light-blocking structure 210 includes multiple light-blocking units 211, the distance between the projection of the top of the light-blocking unit 211 along the first direction and the projection of the image-sensitive area S1 along the first direction is L2. The distance L2 at different light-blocking units 211 of the light-blocking structure 210 can be the same or different.

[0166] For example, both the first cavity wall 130 and the second cavity wall 140 are provided with a light-blocking structure 210, so as to block more stray light towards the light entrance aperture 320, and also to make stray light reflect multiple times between the first cavity wall 130 and the second cavity wall 140, so as to reduce the energy of stray light and make the stray light reduction effect better.

[0167] Figure 6 for Figure 5 An exploded view of the filter holder provided in the image. Figure 7 for Figure 5 This is another exploded view of the filter holder provided. In the figure, the y-direction is the third direction.

[0168] like Figures 5-7 As shown, in some possible embodiments, the main body 100 includes a first structural member 150 and a second structural member 160. The first structural member 150 has a first opening 350 on one side in a second direction. The second structural member 160 is disposed at the first opening 350 and fixed to the first structural member 150. The second structural member 160 and the first structural member 150 are used to enclose and form a first chamber 310. At least a portion of one of the first chamber wall 130 and the second chamber wall 140 is located in the first structural member 150; that is, the first structural member 150 includes at least a portion of one of the first chamber wall 130 and the second chamber wall 140. At least a portion of the other of the first chamber wall 130 and the second chamber wall 140 is located in the second structural member 160; that is, the second structural member 160 includes at least a portion of the other of the first chamber wall 130 and the second chamber wall 140. At least one of the first structural member 150 and the second structural member 160 is provided with a light-weakening structure 200.

[0169] In this way, it is relatively easy to set up light-blocking structures 210 and light-weakening structures 200 on the first cavity wall 130 and the second cavity wall 140.

[0170] For example, at least a portion of the first cavity wall 130 is located in the first structural member 150, and at least a portion of the second cavity wall 140 is located in the second structural member 160. At least one of the portion of the first cavity wall 130 located in the first structural member 150 and the portion of the second cavity wall 140 located in the second structural member 160 is provided with a light weakening structure 200.

[0171] For example, both the first structural member 150 and the second structural member 160 are provided with light weakening structures 200.

[0172] For example, at least one of the first structural member 150 and the second structural member 160 is provided with a light-blocking structure 210.

[0173] For example, at least a portion of the first cavity wall 130 is located in the first structural member 150, and the portion of the first cavity wall 130 located in the first structural member 150 is provided with a light-blocking structure 210.

[0174] For example, at least a portion of the second cavity wall 140 is located in the second structural member 160, and the portion of the second cavity wall 140 located in the second structural member 160 is provided with a light-blocking structure 210.

[0175] For example, the first structural member 150 and the second structural member 160 can be bonded and fixed together.

[0176] In some possible implementations, the area of ​​the first structural member 150 covered by the projection of the first opening 350 along the second direction is provided with a light-weakening structure 200.

[0177] This facilitates operations such as drafting in the area of ​​the first structural member 150 covered by the projection of the first opening 350 along the second direction, making it easier to form light-weakening structures 200 such as light-blocking structures 210 on the first structural member 150.

[0178] For example, the area of ​​the first structural member 150 covered by the projection of the first opening 350 along the second direction is provided with a light-blocking structure 210.

[0179] For example, the first structural member 150 can be formed by injection molding.

[0180] In some examples, the first structural member 150 may be made of plastic.

[0181] For example, the second structural member 160 can be formed by injection molding.

[0182] In some examples, the second structural member 160 may be made of plastic.

[0183] In some examples, the second end 120, the filter mounting structure 410, and the support structure 420 are located in the first structural member 150. That is, the first structural member 150 includes the second end 120, the filter mounting structure 410, and the support structure 420, and the first structural member 150 has a light exit hole 330.

[0184] In some examples, the first opening 350 penetrates the surface of the first structural member 150 away from the second end 120, and part of the first end 110 is located in the first structural member 150 and part is located in the second structural member 160. That is, the first end 110 is formed by splicing the first structural member 150 and the second structural member 160, and the light inlet 320 is formed by enclosing the first structural member 150 and the second structural member 160.

[0185] Figure 8 This is an exploded view of a filter assembly provided in an embodiment of this application. Figure 9 for Figure 8 A cross-sectional schematic diagram of the filter assembly provided in the document.

[0186] like Figure 8 , Figure 9 As shown, in some possible implementations, the first opening 350 is located between the first end 110 and the second end 120.

[0187] In this way, the first opening 350 will not affect the flatness of the end face of the first end 110 and the end face of the second end 120, so as to facilitate the secure assembly of the first end 110 and the second end 120 with other components.

[0188] For example, the first structural member 150 includes a first end 110 and a second end 120, and the first structural member 150 has an entrance light hole 320 and an exit light hole 330.

[0189] In some examples, the light-emitting aperture 330 can be a tapered aperture with its small end communicating with the first chamber 310, so as to facilitate the placement of the photosensitive element 34 within the light-emitting aperture 330.

[0190] Figure 10 This is an exploded view of another filter holder provided in an embodiment of this application. Figure 11 for Figure 10 A cross-sectional schematic diagram of the filter holder provided in the diagram.

[0191] like Figure 10 , Figure 11As shown, the main body 100 may further include a third structural member 170, with the second end 120 located on the third structural member 170. The third structural member 170 has a light-emitting hole 330. The first structural member 150 and the second structural member 160 are arranged opposite each other in the second direction. The ends of the first structural member 150 and the second structural member 160 near the photosensitive element 34 are both connected to the third structural member 170. The first structural member 150, the second structural member 160, and the third structural member 170 are used to enclose and form a first chamber 310. The first opening 350 penetrates the surface of the first structural member 150 away from the second end 120. Part of the first end 110 is located on the first structural member 150 and part is located on the second structural member 160. That is, the first end 110 is formed by splicing the first structural member 150 and the second structural member 160. The light-entry hole 320 is formed by enclosing the first structural member 150 and the second structural member 160.

[0192] For example, the third structural member 170 can be formed by injection molding.

[0193] For example, the third structural member 170 may be made of plastic.

[0194] In some examples, the main body 100 also includes a connector 180, through which the first structural member 150, the second structural member 160 and the third structural member 170 are connected.

[0195] For example, the connector 180 may be made of metal.

[0196] Figure 12 This is an exploded view of another filter holder provided in an embodiment of this application. Figure 13 for Figure 12 A cross-sectional schematic diagram of the filter holder provided in the diagram.

[0197] like Figure 12 , Figure 13 As shown, in some possible embodiments, the first structural member 150 includes a plastic member 151 and a metal member 152, at least a portion of the metal member 152 being enclosed within the plastic member 151, and the plastic member 151 and the metal member 152 being an integral structure.

[0198] In this way, the metal part 152 can improve the strength of the first structural part 150 and reduce the impact of opening the first opening 350 on the strength of the first structural part 150. This makes it easier to form the light weakening structure 200 in the first cavity wall 130 and the second cavity wall 140, while also enabling the first structural part 150 to have high strength.

[0199] For example, the plastic part 151 and the metal part 152 can be formed into an integral structure by in-mold injection molding.

[0200] For example, the plastic part 151 includes a first end 110, a second end 120 and a filter mounting structure 410, and the plastic part 151 has an entrance hole 320 and an exit hole 330.

[0201] In some examples, the plastic part 151 may include a second cavity wall 140, the metal part 152 has a first opening 350, the second structural member 160 is connected to the metal part 152, and a portion of the first cavity wall 130 is located on the metal part 152 and a portion is located on the second structural member 160. This allows for a smaller dimension between the filters 36a in the second direction.

[0202] For example, the inner wall of the metal part 152 may be provided with a light-absorbing structure such as a black ink layer structure.

[0203] For example, the main body 100 also includes a support member 190, and the second structural member 160 can be disposed within the first opening 350 and connected to the first structural member 150 through the support member 190. For example, the support member 190 can be a Mylar sheet, and the support member 190 can be connected to the metal member 152.

[0204] In some examples, the first opening 350 may penetrate the portion of the plastic part 151 and the metal part 152 located on one side of the first chamber 310 in the second direction.

[0205] In some examples, the plastic part 151 may have a first opening 350.

[0206] Figure 14 This is an exploded view of another filter holder provided in an embodiment of this application. Figure 15 for Figure 14 A cross-sectional schematic diagram of the filter holder provided in the diagram.

[0207] like Figure 14 , Figure 15 As shown, in some possible embodiments, the first structural member 150 includes a first sub-structural member 153 and a second sub-structural member 154. The first sub-structural member 153 has a first opening 350 on one side in the second direction and a second opening 360 on the other side in the second direction. The second structural member 160 is fixed to the first sub-structural member 153. The second sub-structural member 154 is disposed at the second opening 360 and fixed to the first sub-structural member 153. The first sub-structural member 153, the second sub-structural member 154, and the second structural member 160 are used to enclose and form a first cavity 310. At least a portion of one of the first cavity wall 130 and the second cavity wall 140 is located in the second sub-structural member 154. Both the second structural member 160 and the second sub-structural member 154 are provided with light-weakening structures 200.

[0208] In this way, it is relatively easy to set the light weakening structure 200 on the first cavity wall 130 and the second cavity wall 140.

[0209] For example, the second substructure 154 can be injection molded.

[0210] For example, the second substructure 154 may be made of plastic.

[0211] For example, the first sub-structural component 153 includes a plastic component 151 and two metal components 152, which are a first metal component 152a and a second metal component 152b, respectively. The first metal component 152a has a second opening 360, and the second metal component 152b has a first opening 350. The second sub-structural component 154 is connected to the first metal component 152a, and the second structural component 160 is connected to the second metal component 152b. A portion of the first cavity wall 130 is located in the first metal component 152a and a portion is located in the second sub-structural component 154, and a portion of the second cavity wall 140 is located in the second metal component 152b and a portion is located in the second structural component 160.

[0212] For example, the first metal part 152a, the second metal part 152b and the plastic part 151 can be formed into an integral structure by in-mold injection molding, the second sub-structural part 154 can be bonded to the first metal part 152a, and the second structural part 160 can be bonded to the second metal part 152b.

[0213] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0214] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0215] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects; in formulas, the character " / " indicates a "division" relationship between the preceding and following related objects.

[0216] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0217] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

Claims

1. A filter holder (36b), characterized in that, Including the main body (100); The main body (100) includes a first end (110) and a second end (120), the first end (110) and the second end (120) are respectively located at both ends of the main body (100) in a first direction, the main body (100) has a first chamber (310), the first end (110) has a light inlet hole (320), the second end (120) has a light outlet hole (330), the light inlet hole (320) and the light outlet hole (330) are arranged opposite to each other and are both connected to the first chamber (310), and the first end (110) or the second end (120) is provided with a filter mounting structure (410); The inner wall of the first chamber (310) is provided with a light weakening structure (200), which is used to weaken the light reflected from the inner wall of the first chamber (310) to the light outlet (330).

2. The filter holder (36b) according to claim 1, characterized in that, The light-weakening structure (200) includes a light-blocking structure (210) protruding from the inner wall of the first chamber (310).

3. The filter holder (36b) according to claim 2, characterized in that, The light-blocking structure (210) includes at least two light-blocking units (211) arranged along the first direction.

4. The filter holder (36b) according to claim 3, characterized in that, The top of the light-blocking unit (211) is an arc-shaped structure or a sharp-cornered structure.

5. The filter holder (36b) according to claim 2, characterized in that, The light-blocking structure (210) is a sawtooth structure, and the light-blocking structure (210) includes a plurality of teeth arranged along the first direction.

6. The filter holder (36b) according to any one of claims 1-5, characterized in that, The main body (100) includes a first cavity wall (130) and a second cavity wall (140), the first cavity wall (130) and the second cavity wall (140) are respectively located on both sides of the first chamber (310) in the second direction, and at least one of the first cavity wall (130) and the second cavity wall (140) is provided with the light weakening structure (200). The second direction is perpendicular to the first direction.

7. The filter holder (36b) according to claim 6, characterized in that, The main body (100) includes a first structural member (150) and a second structural member (160); The first structural member (150) has a first opening (350) on one side in the second direction, and the second structural member (160) is disposed at the first opening (350) and fixed to the first structural member (150). The second structural member (160) and the first structural member (150) are used to enclose and form the first chamber (310). At least a portion of one of the first cavity wall (130) and the second cavity wall (140) is located in the first structural member (150), and at least a portion of the other of the first cavity wall (130) and the second cavity wall (140) is located in the second structural member (160). At least one of the first structural member (150) and the second structural member (160) is provided with the light weakening structure (200).

8. The filter holder (36b) according to claim 7, characterized in that, The light-weakening structure (200) is provided in the area of ​​the first structural member (150) covered by the projection of the first opening (350) along the second direction.

9. The filter holder (36b) according to claim 7, characterized in that, The first opening (350) is located between the first end (110) and the second end (120).

10. The filter holder (36b) according to claim 7, characterized in that, The first structural member (150) includes a first sub-structural member (153) and a second sub-structural member (154); The first sub-structural member (153) has the first opening (350) on one side in the second direction, and the first sub-structural member (153) has the second opening (360) on the other side in the second direction. The second structural member (160) is fixed to the first sub-structural member (153), and the second sub-structural member (154) is disposed at the second opening (360) and fixed to the first sub-structural member (153). The first sub-structural member (153), the second sub-structural member (154) and the second structural member (160) are used to enclose and form the first cavity (310). At least a portion of one of the first cavity wall (130) and the second cavity wall (140) is located in the second substructure (154), and both the second structure (160) and the second substructure (154) are provided with the light weakening structure (200).

11. The filter holder (36b) according to claim 7, characterized in that, The first structural component (150) includes a plastic component (151) and a metal component (152), at least a portion of which is enclosed within the plastic component (151), and the plastic component (151) and the metal component (152) are an integral structure.

12. The filter holder (36b) according to any one of claims 1-5, characterized in that, The second end (120) is provided with a support structure (420), which is located on the side of the second end (120) away from the first end (110). The support structure (420) and the second end (120) enclose a second chamber (340). The light outlet (330) connects the first chamber (310) and the second chamber (340). The filter mounting structure (410) is provided at the second end (120) and is located in the second chamber (340).

13. The filter holder (36b) according to any one of claims 1-5, characterized in that, The light-weakening structure (200) includes at least one of a diffuse reflection structure and a light-absorbing structure.

14. A filter assembly (36), characterized in that, Includes a filter (36a) and a filter holder (36b) as described in any one of claims 1-13; The filter (36a) is fixedly mounted on the filter mounting structure (410) of the filter support (36b).

15. A camera module (30), characterized in that, It includes a lens assembly (31), a photosensitive element (34), and a filter assembly (36) as described in claim 14; The filter assembly (36) and the photosensitive element (34) are both located on the image side of the lens assembly (31), and the filter (36a) of the filter assembly (36) is located between the lens assembly (31) and the photosensitive element (34).

16. The camera module (30) according to claim 15, characterized in that, The equivalent focal length of the camera module (30) is greater than or equal to 70mm.

17. The camera module (30) according to claim 15, characterized in that, The back focal length of the camera module (30) is greater than or equal to 1.4mm.

18. The camera module (30) according to any one of claims 15-17, characterized in that, The photosensitive element (34) has an image-emitting photosensitive area (S1); The projection of the light-blocking structure (210) of the filter assembly (36) along the first direction is located outside the projection of the image-sensing area (S1) along the first direction, and the distance between the projection of the light-blocking structure (210) along the first direction and the projection of the image-sensing area (S1) along the first direction is greater than 0.15 mm.

19. The camera module (30) according to any one of claims 15-17, characterized in that, It also includes the motor system (32); The lens assembly (31) is disposed within the motor system (32), and the first end (110) of the filter assembly (36) is connected to the motor system (32); An avoidance structure (37) is formed between the outer wall of the filter support (36b) of the filter assembly (36) and the outer wall of the motor system (32).

20. An electronic device, characterized in that, Includes a housing (10) and a camera module (30) as described in any one of claims 15-19; The camera module (30) is disposed on the housing (10).

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