Sunshade, camera module and electronic device
By setting a V-shaped opening structure with sharp corners on the inner ring surface of the light-shielding plate, the stray light problem caused by conventional light-shielding plates is solved, achieving efficient reduction of stray light generation and improvement of image quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANCHANG OFILM HUAGUANG TECH CO LTD
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-07
AI Technical Summary
The inner window of a conventional light shield is flat, which causes stray light to be generated when light from a certain angle enters the image sensor, affecting image quality.
A light-shielding sheet is designed by forming a V-shaped opening through the first and second sharp corners on the inner ring surface of the body, thereby reducing light reflection. Injection molding is used to ensure manufacturing accuracy and reduce costs.
It significantly reduces stray light generation, improves image quality, simplifies manufacturing processes, and lowers costs.
Smart Images
Figure CN224471862U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of optical imaging technology, specifically to a light shield, a camera module, and an electronic device. Background Technology
[0002] A light shield is a core functional component for improving the imaging quality of a camera module, effectively solving the problem of light interference. However, the inner window of a conventional light shield is a flat plane. During shooting, light at a certain angle will pass through the inner window plane of the light shield and enter the photosensitive chip, generating stray light and thus affecting the image quality. Utility Model Content
[0003] In view of the above, it is necessary to propose a light-shielding sheet, a camera module, and an electronic device to reduce stray light generation and improve image quality.
[0004] In a first aspect, embodiments of this application provide a light-shielding sheet disposed between an optical lens and a filter. The light-shielding sheet includes a body, a first pointed corner portion, and a second pointed corner portion. The body, the first pointed corner portion, and the second pointed corner portion are all annular structures. The first pointed corner portion and the second pointed corner portion are both disposed on the inner annular surface of the body, and the first pointed corner portion and the second pointed corner portion are disposed adjacent to each other and form a V-shaped opening. The ends of the first pointed corner portion and the second pointed corner portion that are away from the inner annular surface of the body are both pointed corners.
[0005] The aforementioned light-shielding sheet, by providing a first and a second pointed corner with sharp ends on the inner annular surface of the main body, forms a V-shaped opening in the inner window of the light-shielding sheet, and the sharp corner of the inner window of the light-shielding sheet can significantly reduce the reflection of light on the inner window of the light-shielding sheet, thereby reducing the generation of stray light; by limiting the first and second pointed corners to form a V-shaped opening, stray light is prevented from being reflected from the V-shaped opening to the photosensitive chip, and the energy of stray light is weakened by multiple reflections, further reducing the generation of stray light, which is beneficial to improving image quality.
[0006] In some embodiments, the body includes a first body and a second body connected together, the first sharp corner is disposed on the inner annular surface of the first body, the second sharp corner is disposed on the inner annular surface of the second body, the first body and the first sharp corner are integrally injection molded, and the second body and the second sharp corner are integrally injection molded.
[0007] The aforementioned light-shielding sheet, by splitting the main body into a first main body and a second main body connected together, and defining that the first main body and the first sharp corner portion are integrally injection molded, and the second main body and the second sharp corner portion are integrally injection molded, creates a layered structure for the light-shielding sheet. This facilitates injection molding and demolding, avoiding situations where demolding is impossible due to the V-shaped opening of the light-shielding sheet. Furthermore, the injection molding process simplifies the manufacturing process of the light-shielding sheet, shortens the production cycle, improves production efficiency, ensures manufacturing precision, and reduces production costs.
[0008] In some embodiments, the first body and the first pointed corner are symmetrically arranged with respect to the second body and the second pointed corner.
[0009] The aforementioned light-shielding sheet, by defining its structure as symmetrical, ensures the light-shielding effect while reducing the generation of stray light.
[0010] In some embodiments, the surface of the first pointed portion away from the second pointed portion is flush with the surface of the first body away from the second body, and / or, the surface of the second pointed portion away from the first pointed portion is flush with the surface of the second body away from the first body.
[0011] The aforementioned light-shielding sheet, by defining that the surface of the first sharp corner is flush with the surface of the first main body, and / or setting the surface of the second sharp corner to be flush with the surface of the second main body, helps to reduce the thickness of the light-shielding sheet and achieve a lightweight design.
[0012] In some embodiments, the first body, the second body, the first sharp corner, and the second sharp corner are all black-plated; and / or, the first body, the second body, the first sharp corner, and the second sharp corner are all provided with a rough structure; and / or, the first body and the second body are connected by adhesive.
[0013] The aforementioned light-shielding sheet, by employing a black-plated finish on the first main body, second main body, first sharp corner, and second sharp corner, enhances its light absorption capacity and prevents stray light reflection. And / or, by providing a rough structure on the first main body, second main body, first sharp corner, and second sharp corner—such as protrusions and / or depressions—the rough structure increases the light absorption capacity of the first main body, second main body, first sharp corner, and second sharp corner when light is incident on them, thus improving the generation of stray light. And / or, by limiting the connection between the first and second main bodies to adhesive, the light-shielding sheet is simple to manufacture, reducing production costs.
[0014] In some embodiments, the angle range of the first and second pointed corners is 30° to 45°.
[0015] The aforementioned light-shielding plate, by limiting the angle range of the sharp corners to 30°–45°, reduces the reflectivity of the sharp corners, preventing light from being reflected onto the photosensitive chip. It also facilitates control over the angle of the sharp corners, reducing their manufacturing difficulty. However, when the angle range of the sharp corners is less than 30°, the sharp corners are difficult to manufacture, increasing the manufacturing complexity; when the angle range of the sharp corners is greater than 45°, light from the sharp corners is easily reflected onto the photosensitive chip, leading to increased stray light generation.
[0016] In some embodiments, the surface of the first pointed corner facing the second pointed corner is a concave arc surface or a convex arc surface, and / or the surface of the second pointed corner facing the first pointed corner is a concave arc surface or a convex arc surface.
[0017] The aforementioned light-shielding sheet, by defining the surfaces of the first and / or second sharp corners as concave or convex arc surfaces, increases the number of times light is reflected, reduces the energy of the light, and helps to improve the generation of stray light.
[0018] In some embodiments, the surface of the first pointed portion away from the second pointed portion is inclined in a direction away from the second pointed portion, and / or the surface of the second pointed portion away from the first pointed portion is inclined in a direction away from the first pointed portion.
[0019] The aforementioned light-shielding plate, by limiting the tilting of the first sharp corner and / or the tilting of the second sharp corner, helps to increase the angle of the V-shaped opening, thereby allowing more light to enter the V-shaped opening and be reflected multiple times within the V-shaped opening, thus reducing the energy of stray light and further reducing the generation of stray light.
[0020] Secondly, embodiments of this application provide a camera module, including an optical lens, a filter, and a light-shielding plate as described in any of the above technical solutions, wherein the light-shielding plate is disposed between the optical lens and the filter.
[0021] The aforementioned camera module's light-shielding plate, by setting a first and a second pointed corner on the inner circumference of the main body, forms a V-shaped opening in the inner window of the light-shielding plate, and the pointed corner significantly reduces the reflection of light on the inner window of the light-shielding plate, thereby reducing the generation of stray light. By limiting the first and second pointed corners to form a V-shaped opening, stray light is prevented from being reflected from the V-shaped opening to the photosensitive chip. At the same time, the energy of stray light is weakened through multiple reflections, further reducing the generation of stray light and improving image quality.
[0022] Thirdly, embodiments of this application provide an electronic device including the camera module described above.
[0023] In the aforementioned electronic device, the light shield of the camera module has a first and a second pointed corner on the inner circumference of the main body, which form a V-shaped opening in the inner window of the light shield. The pointed corner significantly reduces the reflection of light on the inner window of the light shield, thereby reducing the generation of stray light. By limiting the first and second pointed corners to form a V-shaped opening, stray light is prevented from being reflected from the V-shaped opening to the photosensitive chip. At the same time, the energy of stray light is weakened by multiple reflections, further reducing the generation of stray light and improving image quality. Attached Figure Description
[0024] Figure 1 This is a cross-sectional schematic diagram of the light-shielding sheet provided in the first embodiment of this application.
[0025] Figure 2 This is a cross-sectional schematic diagram of the light-shielding sheet provided in the second embodiment of this application.
[0026] Figure 3 This is a cross-sectional schematic diagram of the light-shielding sheet provided in the third embodiment of this application.
[0027] Figure 4 This is a cross-sectional schematic diagram of the light-shielding sheet provided in the fourth embodiment of this application.
[0028] Figure 5 This is a cross-sectional schematic diagram of the light-shielding sheet provided in the fifth embodiment of this application.
[0029] Figure 6 This is a schematic diagram of the camera module provided in the sixth embodiment of this application.
[0030] Figure 7 yes Figure 6 The image shows a cross-sectional view of the camera module along VII-VII.
[0031] Figure 8 yes Figure 7 The image shows a simulation diagram of the light source of the camera module in the V+8° direction.
[0032] Figure 9 yes Figure 7 The image shows a simulated light pattern of the camera module in the V-8.9° direction.
[0033] Figure 10 yes Figure 7 The image shows a simulated light pattern of the camera module in the H10° direction.
[0034] Figure 11 This is a schematic diagram of the electronic device provided in the seventh embodiment of this application.
[0035] Explanation of main component symbols: Electronic device 1, camera module 1000, light shield 100, body 10, first main body 12, second main body 14, first sharp corner 20, second sharp corner 30, optical lens 200, filter 300, housing 400, photosensitive chip 500, prism 600, circuit board 700. Detailed Implementation
[0036] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0037] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.
[0038] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0039] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.
[0040] Please see Figure 1 The first embodiment of this application provides a light-shielding sheet 100. The light-shielding sheet 100 is applied to a camera module 1000 (see...). Figure 6 In the optical lens 200, the light-shielding plate 100 is disposed on the light-shielding plate 100 (see [reference]). Figure 7 ) and filter 300 (see Figure 7 Between the two, the light shield 100 is used to improve stray light from the camera module 1000 and enhance image quality.
[0041] The light-shielding plate 100 includes a body 10, a first pointed corner portion 20, and a second pointed corner portion 30. The body 10, the first pointed corner portion 20, and the second pointed corner portion 30 are all annular structures, which can also be understood as the body 10 having an inner window, which can also be understood as a light-transmitting hole. The light-shielding plate 100 can be generally rectangular, circular, elliptical, etc. The inner window of the light-shielding plate 100 can be rectangular, circular, elliptical, etc., but this application embodiment does not specifically limit this; it can be set according to actual conditions. The first pointed corner portion 20 and the second pointed corner portion 30 are both disposed on the inner annular surface of the body 10, and the first pointed corner portion 20 and the second pointed corner portion 30 are disposed adjacent to each other and form a V-shaped opening. The ends of the first pointed corner portion 20 and the second pointed corner portion 30 that are away from the inner annular surface of the body 10 are both pointed corners. Both the first pointed corner 20 and the second pointed corner 30 are approximately right-angled triangles. The "adjacent" arrangement can be understood as the point on the first pointed corner 20 closest to the second pointed corner 30 being in contact with the point on the second pointed corner 30 closest to the first pointed corner 20. It should be noted that... Figure 1 The dashed lines shown are only used to roughly distinguish the main body 10, the first pointed corner 20, and the second pointed corner 30.
[0042] In this embodiment, the light-shielding sheet 100 has a first sharp corner portion 20 and a second sharp corner portion 30 with pointed ends on the inner annular surface of the body 10, so that the inner opening of the light-shielding sheet 100 forms a V-shaped opening and the inner opening of the light-shielding sheet 100 forms a sharp corner. The sharp corner can significantly reduce the reflection of light on the inner opening of the light-shielding sheet 100, thereby reducing the phenomenon of light incident on the photosensitive chip 500 and reducing the generation of stray light. By limiting the first sharp corner portion 20 and the second sharp corner portion 30 to form a V-shaped opening, stray light is prevented from being reflected from the V-shaped opening to the photosensitive chip 500. At the same time, the energy of stray light is weakened by multiple reflections, further reducing the generation of stray light and improving the imaging quality.
[0043] In this embodiment, the body 10 includes a first body 12 and a second body 14. The first body 12 and the second body 14 are connected, specifically, the first body 12 and the second body 14 can be connected by adhesive. A first sharp corner 20 is disposed on the inner annular surface of the first body 12, and a second sharp corner 30 is disposed on the inner annular surface of the second body 14. The first body 12 and the first sharp corner 20 are integrally injection molded, and the second body 14 and the second sharp corner 30 are integrally injection molded. That is, after the first body 12 and the first sharp corner 20 are integrally injection molded, and the second body 14 and the second sharp corner 30 are integrally injection molded, the first body 12 and the second body 14 are connected by adhesive to form a light-shielding sheet 100.
[0044] Thus, by splitting the main body 10 into a first main body 12 and a second main body 14, and specifying that the first main body 12 and the first sharp corner portion 20 are integrally injection molded, and the second main body 14 and the second sharp corner portion 30 are integrally injection molded, the light-shielding sheet 100 has a double-layered structure. This facilitates the injection molding and demolding of the light-shielding sheet 100, avoiding the inability to demold due to the V-shaped opening of the light-shielding sheet 100. Furthermore, the injection molding process of the light-shielding sheet 100 simplifies its manufacturing process, shortens the manufacturing cycle, improves efficiency, ensures precision, and reduces costs. By specifying that the first main body 12 and the second main body 14 are connected by adhesive, the manufacturing of the light-shielding sheet 100 is simple, further reducing costs.
[0045] Understandably, in other embodiments, the first body 12, the second body 14, the first sharp corner 20 and the second sharp corner 30 can also be integrally formed, for example by 3D printing technology. This application does not specifically limit this.
[0046] Understandably, in other embodiments, the first body 12 and the second body 14 may not be fixedly connected. When the light shield 100 is placed in the camera module 1000, the light shield 100 can be clamped in the housing 400 of the camera module 1000 to fix the light shield 100.
[0047] In this embodiment, the first main body 12 and the first pointed corner 20 are symmetrically arranged with the second main body 14 and the second pointed corner 30. The thickness of the first main body 12 and the second main body 14 is, for example, 0.27 mm. The injection molding of the pointed corners of the first pointed corner 20 and the second pointed corner 30 allows for a radius of 2 μm to 10 μm for the minute rounded corners. Thus, by defining the light-shielding sheet 100 as a symmetrical structure, the light-shielding effect of the light-shielding sheet 100 is ensured, while the generation of stray light is reduced.
[0048] Understandably, in other embodiments, the thickness of the first body 12 and the second body 14 may also be different, and the first sharp corner portion 20 and the second sharp corner portion 30 may also be asymmetrical. The specific settings can be made according to the actual situation, and the embodiments of this application do not specifically limit this.
[0049] In this embodiment, the surface of the first pointed corner 20 facing away from the second pointed corner 30 is flush with the surface of the first main body 12 facing away from the second main body 14, and the surface of the second pointed corner 30 facing away from the first pointed corner 20 is flush with the surface of the second main body 14 facing away from the first main body 12. Thus, by limiting the surface of the first pointed corner 20 to be flush with the surface of the first main body 12 and the surface of the second pointed corner 30 to be flush with the surface of the second main body 14, it is beneficial to reduce the thickness of the light-shielding sheet 100 and achieve a thinner and lighter design.
[0050] Understandably, in other embodiments, the surface of the first sharp corner 20 facing away from the second sharp corner 30 and the surface of the first body 12 facing away from the second body 14 may also be non-flush, such as inclined or stepped; or, the surface of the second sharp corner 30 facing away from the first sharp corner 20 and the surface of the second body 14 facing away from the first body 12 may also be non-flush, such as inclined or stepped; the embodiments of this application do not specifically limit this.
[0051] In this embodiment, the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30 are all black-plated. Preferably, the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30 are all super black-plated. Thus, by using black plating on the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30, the reflectivity of the light-shielding sheet 100 is reduced to below 0.8%, improving the light absorption capacity of the light-shielding sheet 100 and preventing stray light reflection.
[0052] In this embodiment, the angle θ of the first sharp corner 20 and the second sharp corner 30 ranges from 30° to 45°, and the angles of the first sharp corner 20 and the second sharp corner 30 are the same. Thus, by limiting the angle range of the sharp corner to 30° to 45°, the sharpness of the sharp corner is moderate, which helps to reduce the reflectivity of the sharp corner, preventing light from reflecting off the sharp corner to the photosensitive chip 500. It also helps to control the angle of the sharp corner and reduces the manufacturing difficulty. However, when the angle range of the sharp corner is less than 30°, the sharp corner is difficult to manufacture, increasing the manufacturing difficulty, and the formed sharp corner lacks strength and is prone to breakage and deformation. When the angle range of the sharp corner is greater than 45°, light from the sharp corner is easily reflected off the photosensitive chip 500, leading to an increase in stray light generation.
[0053] Understandably, in other embodiments, the angles of the first pointed corner portion 20 and the second pointed corner portion 30 may be different. For example, the angle of the first pointed corner portion 20 may be 30° and the angle of the second pointed corner portion may be 45°, or the angle may be set according to the specific situation. This application embodiment does not specifically limit this.
[0054] In this embodiment, the surfaces of the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30 are all provided with a rough structure. This rough structure can be a raised or recessed structure plated onto the surfaces of the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30, making the surfaces of the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30 uneven. Thus, by providing a rough structure on the surfaces of the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30, such as a raised or recessed structure, when light is incident on the surfaces of the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30, the rough structure increases the light absorption capacity of the first body 12, the second body 14, the first pointed corner 20, and the second pointed corner 30, which is beneficial for improving the generation of stray light.
[0055] Please see Figure 2 The second embodiment of this application provides a light-shielding sheet 100. The light-shielding sheet 100 of this embodiment is structurally similar to the light-shielding sheet 100 provided in the first embodiment, except that in this embodiment, the surface of the first pointed corner 20 facing the second pointed corner 30 is a concave arc surface, and the surface of the second pointed corner 30 facing the first pointed corner 20 is also a concave arc surface. Thus, by defining the surfaces of the first pointed corner 20 and the second pointed corner 30 as concave arc surfaces, the number of reflections of light is increased, the energy of the light is reduced, and the generation of stray light is improved.
[0056] Understandably, in other embodiments, the surface of the first pointed corner 20 facing the second pointed corner 30 may also be a convex arc surface, and the surface of the second pointed corner 30 facing the first pointed corner 20 may also be a convex arc surface; or, the surface of the first pointed corner 20 facing the second pointed corner 30 may be a concave arc surface, and the surface of the second pointed corner 30 facing the first pointed corner 20 may be a convex arc surface; or, the surface of the first pointed corner 20 facing the second pointed corner 30 may be a convex arc surface, and the surface of the second pointed corner 30 facing the first pointed corner 20 may be a concave arc surface.
[0057] Understandably, in other embodiments, the surface of the first sharp corner 20 facing the second sharp corner 30 may also be multiple inclined surfaces, etc., and the angle of these surfaces may become smaller or larger; and / or, the surface of the second sharp corner 30 facing the first sharp corner 20 may also be multiple inclined surfaces, etc., and the angle of these surfaces may become smaller or larger.
[0058] Understandably, in other embodiments, the surface of the first sharp corner 20 facing the second sharp corner 30 may also be a stepped surface or other gradient surface, and the surface of the second sharp corner 30 facing the first sharp corner 20 may also be a stepped surface or other gradient surface. The specific settings can be made according to the actual situation, and the embodiments of this application do not specifically limit this.
[0059] Please see Figure 3 The third embodiment of this application provides a light-shielding sheet 100. The light-shielding sheet 100 of this embodiment is structurally similar to the light-shielding sheet 100 provided in the first embodiment, except that in this embodiment, the surface of the first pointed corner 20 facing away from the second pointed corner 30 is inclined in a direction away from the second pointed corner 30, and the surface of the second pointed corner 30 facing away from the first pointed corner 20 is also inclined in a direction away from the first pointed corner 20. Specifically, the surface of the first pointed corner 20 facing away from the second pointed corner 30 is inclined relative to the surface of the first body 12 in a direction away from the first body 12, and the surface of the second pointed corner 30 facing away from the first pointed corner 20 is inclined relative to the surface of the second body 14 in a direction away from the second body 14. Thus, by limiting the surface of the first sharp corner 20 away from the second sharp corner 30 to be inclined relative to the first body 12, and the surface of the second sharp corner 30 away from the first sharp corner 20 to be inclined relative to the second body 14, it is beneficial to increase the angle of the V-shaped opening of the light shield 100, so that more light can enter the V-shaped opening and be reflected multiple times in the V-shaped opening, thereby reducing the energy of stray light and further reducing the generation of stray light.
[0060] Understandably, in other embodiments, it may be limited only to the surface of the first sharp corner 20 facing away from the second sharp corner 30 being inclined in a direction away from the first body 12 relative to the surface of the first body 12, or only to the surface of the second sharp corner 30 facing away from the first sharp corner 20 being inclined in a direction away from the second body 14 relative to the surface of the second body 14; the embodiments of this application do not specifically limit this.
[0061] Please see Figure 4 This application provides a light-shielding sheet 100 in its fourth embodiment. The light-shielding sheet 100 of this embodiment is structurally similar to that of the light-shielding sheet 100 provided in the first embodiment, except that the shape of the first pointed corner 20 is different from the shape of the second pointed corner 30, and the length of the first pointed corner 20 along the direction perpendicular to the inner ring surface of the body 10 is greater than the length of the second pointed corner 30 along the same direction. Thus, by limiting the length of the first pointed corner 20 to be greater than the length of the second pointed corner 30, the first pointed corner 20 can block some light from entering the second pointed corner 30. Combined with the pointed corner of the second pointed corner 30, this helps to reduce stray light generation and improve image quality.
[0062] Understandably, in other embodiments, the length of the second pointed corner 30 may be greater than the length of the first pointed corner 20, and the specific length can be set according to the actual situation. When the length of the second pointed corner 30 is greater than the length of the first pointed corner 20, the second pointed corner 30 can block some light from entering the photosensitive chip 500, and the second pointed corner 30 can increase its light reflection efficiency, thereby preventing light from entering the photosensitive chip 500, thus improving stray light and enhancing image quality.
[0063] Please see Figure 5 The fifth embodiment of this application provides a light-shielding sheet 100. The light-shielding sheet 100 of this embodiment is generally similar in structure to the light-shielding sheet 100 provided in the first embodiment, except that in this embodiment, the first sharp corner 20 and the second sharp corner 30 are both approximately isosceles triangles.
[0064] Understandably, in other embodiments, one of the first apex 20 and the second apex 30 may be a right triangle and the other may be an isosceles triangle, or the first apex 20 and the second apex 30 may be irregular triangles. This application does not specifically limit this.
[0065] Please see Figure 6 and Figure 7 This application provides a camera module 1000 according to a sixth embodiment. The camera module 1000 includes an optical lens 200, a filter 300, and a light-shielding plate 100 as described in any of the first to fifth embodiments. The light-shielding plate 100 is disposed between the optical lens 200 and the filter 300. In this embodiment, the camera module 1000 further includes a housing 400, a photosensitive chip 500, a prism 600, and a circuit board 700. The optical lens 200, the light-shielding plate 100, and the filter 300 are sequentially disposed within the housing 400. The photosensitive chip 500 is disposed on the side of the filter 300 opposite to the light-shielding plate 100 and on the image side of the housing 400. The prism 600 is disposed within the housing 400 and on the side of the optical lens 200 opposite to the light-shielding plate 100. The circuit board 700 is electrically connected to the image side of the photosensitive chip 500. In a specific embodiment, the light-shielding plate 100 is embedded within the housing 400. The camera module 1000 in this embodiment is a periscope camera module 1000.
[0066] In this embodiment, the camera module 1000 has a light-shielding plate 100. By providing a first sharp corner portion 20 and a second sharp corner portion 30 with pointed ends on the inner annular surface of the body 10, the inner opening of the light-shielding plate 100 forms a V-shaped opening, and the inner opening of the light-shielding plate 100 forms a sharp corner. The sharp corner can significantly reduce the reflection of light on the inner opening of the light-shielding plate 100, thereby reducing the generation of stray light. By limiting the first sharp corner portion 20 and the second sharp corner portion 30 to form a V-shaped opening, stray light is prevented from being reflected from the V-shaped opening to the photosensitive chip 500. At the same time, the energy of stray light is weakened by multiple reflections, further reducing the generation of stray light and improving the image quality.
[0067] Please see Figure 8 , Figure 9 and Figure 10 , Figure 8 The image shows a simulated light pattern of the camera module 1000 in the V+8° direction. Figure 9 The image shows a simulated light pattern of the camera module 1000 in the V-8.9° direction. Figure 10 The image shows a simulated lighting pattern of the camera module 1000 at H10°. Figure 8 , Figure 9 and Figure 10 The simulated light pattern shown demonstrates that the light-shielding plate 100 can effectively reduce stray light generation.
[0068] Please see Figure 11 This application's seventh embodiment provides an electronic device 1. The electronic device 1 includes the camera module 1000 described in the sixth embodiment. In this embodiment, the electronic device 1 can be a mobile phone. It is understood that in other embodiments, the electronic device 1 can also be a laptop computer, tablet computer, smartwatch, monitor, vehicle camera, or other device with camera functionality.
[0069] In this embodiment, the camera module 1000 of the electronic device 1 has a light shield 100 with a first sharp corner portion 20 and a second sharp corner portion 30 on the inner annular surface of the body 10, which form a V-shaped opening in the inner window of the light shield 100. The sharp corner significantly reduces the reflection of light on the inner window of the light shield 100, thereby reducing the generation of stray light. By limiting the first sharp corner portion 20 and the second sharp corner portion 30 to form a V-shaped opening, stray light is prevented from being reflected from the V-shaped opening to the photosensitive chip 500. At the same time, the energy of stray light is weakened by multiple reflections, further reducing the generation of stray light and improving the image quality.
[0070] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.
[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.
Claims
1. A light-blocking sheet, characterized in that, The light-shielding plate is disposed between the optical lens and the filter. The light-shielding plate includes a body, a first pointed corner, and a second pointed corner. The body, the first pointed corner, and the second pointed corner are all annular structures. The first pointed corner and the second pointed corner are both disposed on the inner annular surface of the body, and the first pointed corner and the second pointed corner are disposed adjacent to each other to form a V-shaped opening. The ends of the first pointed corner and the second pointed corner that are away from the inner annular surface of the body are both pointed corners.
2. The light-shielding sheet as described in claim 1, characterized in that, The body includes a first body and a second body connected to each other. The first sharp corner is disposed on the inner ring surface of the first body, and the second sharp corner is disposed on the inner ring surface of the second body. The first body and the first sharp corner are integrally injection molded, and the second body and the second sharp corner are integrally injection molded.
3. The light-shielding sheet as described in claim 2, characterized in that, The first main body and the first pointed corner are symmetrically arranged with the second main body and the second pointed corner.
4. The light-shielding sheet as described in claim 2, characterized in that, The surface of the first pointed corner away from the second pointed corner is flush with the surface of the first body away from the second body, and / or the surface of the second pointed corner away from the first pointed corner is flush with the surface of the second body away from the first body.
5. The light-shielding sheet as described in claim 2, characterized in that, The first body, the second body, the first sharp corner, and the second sharp corner are all black-plated; and / or, The first body, the second body, the first sharp corner, and the second sharp corner are all provided with a rough structure; and / or, The first body and the second body are connected by glue.
6. The light-shielding sheet according to any one of claims 1 to 5, characterized in that, The angle range of the first and second pointed corners is 30° to 45°.
7. The light-shielding sheet as described in claim 1, characterized in that, The surface of the first pointed corner facing the second pointed corner is a concave arc surface or a convex arc surface, and / or the surface of the second pointed corner facing the first pointed corner is a concave arc surface or a convex arc surface.
8. The light-shielding sheet as described in claim 1, characterized in that, The surface of the first pointed portion away from the second pointed portion is inclined in a direction away from the second pointed portion, and / or the surface of the second pointed portion away from the first pointed portion is inclined in a direction away from the first pointed portion.
9. A camera module, characterized in that, It includes an optical lens, a filter, and a light-shielding plate as described in any one of claims 1 to 8, wherein the light-shielding plate is disposed between the optical lens and the filter.
10. An electronic device, characterized in that, Includes the camera module as described in claim 9.