A camera module
By setting a limiting structure in the camera module, the problem of the zoom lens being unable to be accurately positioned during zooming is solved, enabling precise positioning and focal length adjustment of the zoom lens and improving the zoom accuracy of the camera module.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUIZHOU TCL MOBILE COMM CO LTD
- Filing Date
- 2022-04-13
- Publication Date
- 2026-06-16
Smart Images
Figure CN114764177B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of camera technology, specifically to a camera module. Background Technology
[0002] With the development of science and technology, more and more devices with video recording functions are becoming available. These devices can record images of people, scenes, and more.
[0003] Modules that enable video recording usually have zoom capabilities. By zooming, the focal length can be changed within a certain range, thereby obtaining different widths of the field of view and achieving different shooting effects.
[0004] Currently, camera modules achieve zoom simply by using a drive mechanism to move the zoom lens. The camera module does not have a structure to limit the start and end positions of the zoom lens, making it impossible for the drive mechanism to accurately position the zoom lens during the driving process. Summary of the Invention
[0005] This application provides a camera module with a limiting structure to achieve precise positioning of the beginning and end positions of a zoom lens.
[0006] This application provides a camera module, which includes a first camera device. The first camera device includes a limiting block, a limiting piece, and a first lens assembly. The first camera device has a first receiving space. The limiting block is fixed to the inner sidewall of the first receiving space. The limiting block includes a first long frame and a second long frame arranged in parallel. The limiting piece is fixed to the outer side of the first lens assembly. The limiting piece protrudes from the first lens assembly and is located between the first long frame and the second long frame. The first lens assembly can drive the limiting piece to move in a first direction. The first long frame and the second long frame can limit the movement stroke of the limiting piece.
[0007] Optionally, the first lens assembly includes a first lens barrel located within the first receiving space. An avoidance groove is provided on the outer surface of the first lens barrel. The limiting piece is partially located within the avoidance groove and partially protrudes from the avoidance groove between the first long frame and the second long frame.
[0008] Optionally, the first lens assembly further includes a first lens, and the first lens barrel is further provided with a first mounting hole, the first mounting hole extending from the top of the first lens barrel to the bottom of the first lens barrel, the first lens portion being located inside the first mounting hole, and the first lens portion protruding from the first mounting hole and located outside the first receiving space.
[0009] Optionally, the first camera device further includes a first retaining ring and a second retaining ring, both of which are fixed within the first receiving space. The first retaining ring is located above the first lens barrel, and the second retaining ring is located below the first lens barrel.
[0010] Optionally, the first camera device further includes a first drive coil and a first magnetic element. The first drive coil is fixed to the inner wall of the first receiving space, and the first magnetic element is fixed to the outer surface of the first lens barrel. The first drive coil and the first magnetic element can drive the first lens barrel to move along the first direction.
[0011] Optionally, the camera module further includes a second camera device, which includes a second lens barrel and a second lens. The second camera device has a second receiving space, which is connected to the first receiving space. The second lens barrel is located within the second receiving space. The second lens is assembled with the second lens barrel. Part of the second lens is located within the second receiving space, and part of it protrudes from the second receiving space and is located within the first receiving space. The second lens is located below the first lens assembly.
[0012] Optionally, the second lens barrel is provided with a second mounting hole, which extends from the top of the second lens barrel to the bottom of the second lens barrel. The second mounting hole is provided with a first thread, and the outer side surface of the second lens is provided with a second thread, wherein the first thread and the second thread are engaged.
[0013] Optionally, the second camera device further includes a second magnetic element, and a mating groove is provided on the outer side surface of the second lens barrel, and the second magnetic element is installed in the mating groove.
[0014] Optionally, the second camera device further includes a second drive coil, which is fixed to the inner wall of the second receiving space. The second drive coil and the second magnetic element can drive the second lens barrel to move along the first direction.
[0015] Optionally, the second camera device further includes an elastic element, which is fixed within the second receiving space and located above the second lens barrel.
[0016] The camera module provided in this application embodiment has a limiting piece on the outer side of the first lens assembly and a limiting block at the position opposite to the limiting piece. The limiting piece is partially located within the first long frame and the second long frame of the limiting block, so that when adjusting the focal length at both ends, the first lens assembly drives the limiting piece to move. When it moves to both ends, the movement of the limiting piece is limited by the first long frame and the second long frame, thereby limiting the movement of the first lens assembly at both ends and making the adjustment of the focal length at both ends more precise. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a cross-sectional view of a camera module provided in an embodiment of this application.
[0019] Figure 2 This is a partial structural schematic diagram of a camera module provided in an embodiment of this application.
[0020] Figure 3 This is another partial structural schematic diagram of a camera module provided in an embodiment of this application.
[0021] Please see Figures 1 to 3 300 is a camera module, 10 is a first camera device, 20 is a second camera device, 101 is a first housing, 102 is a first base, 103 is a first lens barrel, 104 is a first lens, 105 is a first retaining ring, 106 is a second retaining ring, 107 is a limiting piece, 108 is a limiting block, 201 is a second housing, 202 is a second base, 203 is a second lens barrel, 204 is a second lens, 205 is an elastic element, 206 is a second drive coil, 207 is a second magnetic element, 1031 is a first mounting hole, 1032 is a clearance groove, 2031 is a second mounting hole, and 2032 is a mating groove. Detailed Implementation
[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "fixed to" another component, it can be directly on another component or there can be an intervening component. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0024] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0025] Please see Figure 1 , Figure 1 This is a cross-sectional view of a camera module provided in an embodiment of this application. The camera module 300 can be used in an electronic device with shooting function, including a first camera device 10 and a second camera device 20. The first camera device 10 and the second camera device 20 can be connected by adhesive, and the thickness of the adhesive layer is set according to the focal length at both ends.
[0026] In the embodiments of this application, both the first camera device 10 and the second camera device 20 are used to adjust the focal length, wherein the first camera device 10 is used to precisely adjust the focal length at both ends, and the focal length at both ends is the focal length at the beginning and end positions.
[0027] The first camera device 10 includes a first housing 101, a first base 102, a first lens barrel 103, a first lens 104, a first retaining ring 105, a second retaining ring 106, a limiting piece 107, and a limiting block 108.
[0028] The first outer shell 101 is a hollow structure and is located outside the first camera device 10. The first base 102 and the first outer shell 101 can be regarded as jointly enclosing a first receiving space (not shown). The first receiving space is in a non-closed state and is used to install and receive other structural components.
[0029] Optionally, the first housing 101 forms the four surrounding walls and the top wall with an opening of the first receiving space, and the first base 102 is partially located within the first receiving space and partially forms the bottom wall of the first receiving space with an opening.
[0030] The first lens barrel 103 is located within the first receiving space, and the first lens barrel 103 is movable within the first receiving space. Specifically, the first lens barrel 103 can move along a first direction, that is, the first lens barrel 103 can move within the first receiving space toward the second camera device 20 or away from the second camera device 20.
[0031] Please refer to the following: Figure 2 , Figure 2 This is a partial structural diagram of a camera module provided in an embodiment of this application. Further, the first lens barrel 103 is provided with a first mounting hole 1031 and a clearance groove 1032.
[0032] The first mounting hole 1031 passes through the first lens barrel 103 and is a through hole for mounting with the first lens 104, fixing the first lens barrel 103 and the first lens 104, so that the first lens barrel 103 and the first lens 104 are a component, and when the first lens barrel 103 moves, it drives the first lens 104 to move synchronously.
[0033] One way to assemble the first lens barrel 103 and the first lens 104 is by snap-fit. A slot can be provided on the inner wall of the first mounting hole 1031. When the first lens barrel 103 and the first lens 104 are assembled, the edge of the first lens 104 is fitted with the slot to connect and fix the first lens barrel 103 and the first lens 104. In this way, the first lens 104 is partially located inside the first mounting hole 1031 and partially protrudes from the first mounting hole 1031.
[0034] Another assembly method for the first lens barrel 103 and the first lens 104 is screw connection. Threads can be provided on the inner wall of the first mounting hole 1031, and matching threads can also be provided on the first lens 104. When the first lens barrel 103 and the first lens 104 are assembled, the threads on the first lens 104 and the threads in the first mounting hole 1031 engage to connect and fix the first lens barrel 103 and the first lens 104, so that part of the first lens 104 is located in the first mounting hole 1031 and part of it protrudes from the first mounting hole 1031, and it is convenient to replace the first lens 104.
[0035] The first lens 104 is used to capture images. After being assembled with the first lens barrel 103, part of it is located in the first receiving space and part of it protrudes from the first receiving space. The first lens 104 is moved by the first lens barrel 103, that is, the focal length is adjusted by the first lens barrel 103 to capture images with different effects.
[0036] The clearance groove 1032 is disposed on the outer side of the first lens barrel 103, and is rectangular in shape. Furthermore, the clearance groove 1032 and the limiting piece 107 are located in opposite positions.
[0037] The limiting piece 107 is used to limit the initial and final movement positions of the first lens barrel 103, that is, to limit the focal lengths at both ends of the first lens barrel 103. It is an important component for achieving precise positioning of the focal lengths at both ends. The limiting piece 107 is located within the clearance groove 1032 and within the first receiving space.
[0038] In the embodiments of this application, the limiting piece 107 and the first lens barrel 103 can be configured as an integral unit, and the limiting piece 107 can be a high-precision metal sheet with a certain strength and hardness.
[0039] In embodiments of this application, the first lens barrel 103 and the first lens 104 can be configured as a first lens assembly.
[0040] The first retaining ring 105 and the second retaining ring 106 are both located within the first receiving space and are used to restrict the first lens barrel 103. At the same time, when adjusting the focal length at both ends, the first retaining ring 105 and the second retaining ring 106 can apply a spring force opposite to the first movement direction due to deformation, so as to restrict the movement and protect the limiting piece 107.
[0041] In the embodiments of this application, the first retaining ring 105 and the second retaining ring 106 are each configured as one. The first retaining ring 105 and the second retaining ring 106 are both fixed in the first receiving space. The position can be limited by the inner wall of the first outer shell 101, or by other structural components.
[0042] The first retaining ring 105 is located at the top of the first lens barrel 103, and the second retaining ring 106 is located at the bottom of the first lens barrel 103.
[0043] When the first lens barrel 103 moves the first lens 104 to the initial position below, the second retaining spring 106 is fixed in position, causing the first lens barrel 103 to press the second retaining spring 106 located below. Under the action of the pressing force, the second retaining spring 106 undergoes elastic deformation, generating an upward spring force, which restricts the movement.
[0044] Correspondingly, when the first lens barrel 103 moves the first lens 104 to the upper end position, the first snap ring 105 is fixed in position, causing the first lens barrel 103 to press the first snap ring 105 located above. Under the action of the pressing force, the first snap ring 105 undergoes elastic deformation, generating a downward spring force, which restricts the movement.
[0045] The limiting block 108 is located within the first receiving space and is fixed in position by the first base 102. The limiting block 108 is used to restrict the movement position of the limiting piece 107, that is, the limiting block 108 is used to restrict the movement stroke of the limiting piece 107 to achieve precise positioning of the two focal lengths.
[0046] In the embodiments of this application, the limiting block 108 and the inner sidewall of the first base 102 are connected and fixed, forming a rectangular frame structure with an opening at one end. The opening is located on the short sidewall of one side. One end of the limiting piece 107 is located between the two long sidewalls of the limiting block 108. The distance between the two long sidewalls of the limiting block 108 is the adjustment stroke of the focal length of the first camera device 10.
[0047] Optionally, the limiting block 108 may include a short border, a first long border, and a second long border. The cross-sections of the short border, the first long border, and the second long border are all rectangular. One end of the first long border and the second long border are respectively connected to the two ends of the short border, so that the limiting block 108 has a rectangular frame structure lacking a short border.
[0048] With the first long frame positioned near the first retaining spring 105 and the second long frame positioned near the second retaining spring 106, the limiting piece 107 is partially located between the first and second long frames. When the first lens barrel 103 moves the first lens 104 and the limiting piece 107 upwards, when the limiting piece 107 moves to a position that contacts the inner wall of the first long frame, it is equivalent to moving to the end position. At this time, the focal length of the first camera device 10 is at its maximum. Since the position of the first retaining spring 105 is fixed, the first lens barrel 103 compresses the first retaining spring 105. Under the action of the compressive force, the first retaining spring 105 undergoes elastic deformation, generating a downward spring force, which restricts the movement and prevents the limiting piece 107 from being deformed or damaged under external force.
[0049] With the first long frame positioned near the first retaining spring 105 and the second long frame positioned near the second retaining spring 106, the limiting piece 107 is partially located between the first and second long frames. When the first lens barrel 103 moves the first lens 104 and the limiting piece 107 downwards, when the limiting piece 107 moves to a position that contacts the inner wall of the second long frame, it is equivalent to moving to the initial position. At this time, the focal length of the first camera device 10 is at its minimum. Since the position of the second retaining spring 106 is fixed, the first lens barrel 103 compresses the second retaining spring 106. Under the action of the compressive force, the second retaining spring 106 undergoes elastic deformation, generating an upward spring force, which restricts the movement and prevents the limiting piece 107 from being deformed or damaged under external force.
[0050] It should be noted that the first camera device 10 also includes a first drive coil (not shown) and a first magnetic element (not shown). The first drive coil and the first magnetic element are both located in the first receiving space. The first drive coil is fixed to the inner side wall of the first housing 101, and the first magnetic element is fixed to the outer side surface of the first lens barrel 103. The first lens barrel 103 is driven by the first drive coil and the first magnetic element.
[0051] The second camera device 20 includes a second housing 201, a second base 202, a second lens barrel 203, a second lens 204, an elastic element 205, a second drive coil 206, and a second magnetic element 207.
[0052] The second outer shell 201 is a hollow structure and is located outside the second camera device 20. The second base 202 and the second outer shell 201 can be regarded as jointly enclosing a second receiving space (not shown). The second receiving space is in a non-closed state and is used to install and receive other structural components.
[0053] In embodiments of this application, the first containment space and the second containment space are connected, and the second camera device 20 part protrudes from the second containment space and is located within the first containment space.
[0054] Optionally, the second housing 201 forms the surrounding walls of the second receiving space and the top wall with an opening, and the second base 202 forms the bottom wall of the second receiving space with an opening.
[0055] The second lens barrel 203 is located within the second receiving space, and the second lens barrel 203 is movable within the second receiving space. Specifically, the second lens barrel 203 can move along a first direction, that is, the second lens barrel 203 can move within the second receiving space toward or away from the first camera device 10.
[0056] Please refer to the following: Figure 3 , Figure 3 Figure 2 This is a partial structural diagram of a camera module provided in an embodiment of this application. Further, the second lens barrel 203 is provided with a second mounting hole 2031 and a mating groove 2032.
[0057] The second mounting hole 2031 penetrates the second lens barrel 203 and is a through hole for mounting with the second lens 204, fixing the second lens barrel 203 and the second lens 204, so that the second lens barrel 203 and the second lens 204 are a component, and when the second lens barrel 203 moves, it drives the second lens 204 to move synchronously.
[0058] A first thread is provided on the inner wall of the second mounting hole 2031, and a matching second thread is provided on the outer wall of the second lens 204. During assembly, the second thread on the second lens 204 engages with the first thread in the second mounting hole 2031 to connect and fix the second lens 204 and the second lens barrel 203. After assembly, the second lens 204 is partially located in the second mounting hole 2031 and partially protrudes from the second mounting hole 2031.
[0059] The second lens 204 is used to capture images. After being assembled with the second lens barrel 203, part of it is located in the second receiving space and part of it protrudes from the second receiving space and is located in the first receiving space. The second lens 204 is moved by the second lens barrel 203, that is, the focal length is adjusted by the first lens barrel 203 to capture images with different effects.
[0060] Optionally, by adjusting the focal length of the first lens 104 and the second lens 204, the first lens 104 and the second lens 204 can jointly capture images with different effects.
[0061] The mating groove 2032 is disposed on the outer side surface of the second mirror barrel 204 and is used for assembly with the second magnetic element 207.
[0062] The second drive coil 206 and the second magnetic element 207 are both located in the second receiving space. The second drive coil 206 is fixed to the inner wall of the second housing 201, and the second magnetic element 207 is installed in the mating groove 2032. The second drive coil 206 and the second magnetic element 207 are used to jointly drive the second lens barrel 203 to move.
[0063] In embodiments of this application, the second lens barrel 203 and the second lens 204 may be configured as a second lens assembly.
[0064] The elastic element 205 is located within the second receiving space and serves to restrict the second lens barrel 203.
[0065] In the embodiments of this application, two elastic elements 205 are provided. The two elastic elements 205 can be respectively designated as a first elastic element and a second elastic element. Both the first elastic element and the second elastic element are fixed in the second receiving space. The position can be limited by the inner wall of the second outer shell 201, or by other structural components.
[0066] The first elastic element is located at the top of the second lens barrel 203, and the second elastic element is located at the bottom of the second lens barrel 203.
[0067] When the second drive coil 206 and the second magnetic element 207 drive the second lens barrel 203 to move the second lens 204 downward to the bottom, the second lens barrel 203 compresses the second elastic element located below due to the fixed position of the second elastic element. Under the action of the compressive force, the second elastic element undergoes elastic deformation, generating an upward spring force to restrict the movement.
[0068] When the second drive coil 206 and the second magnetic element 207 drive the second lens barrel 203 to move the second lens 204 upward to the top, the second lens barrel 203 compresses the first elastic element located above it because the position of the first elastic element is fixed. Under the action of the compressive force, the first elastic element undergoes elastic deformation, generating a downward spring force to restrict the movement.
[0069] This application provides a camera module 300, including a first camera device 10 and a second camera device 20 connected together. Both the first camera device 10 and the second camera device 20 are used to adjust the focal length. The first camera device 10 achieves precise adjustment of the focal length at both ends by setting a limiting piece 107 and a limiting block 108.
[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0071] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A camera module, characterized in that, The camera module includes a first camera device, which includes a limiting block, a limiting piece, and a first lens assembly. The first camera device has a first receiving space. The limiting block is fixed to the inner wall of the first receiving space. The limiting block includes a first long frame and a second long frame arranged in parallel. The limiting piece is fixed to the outer side of the first lens assembly, and the limiting piece partially protrudes from the first lens assembly and is located between the first long frame and the second long frame. The first lens assembly can drive the limiting piece to move in a first direction. The first long frame and the second long frame can limit the movement stroke of the limiting piece. The first lens assembly includes a first lens barrel, which is located in the first receiving space. An avoidance groove is provided on the outer side of the first lens barrel. The limiting piece is partially located in the avoidance groove and partially protrudes from the avoidance groove and is located between the first long frame and the second long frame.
2. The camera module according to claim 1, characterized in that, The first lens assembly further includes a first lens, and the first lens barrel is also provided with a first mounting hole, the first mounting hole extending from the top of the first lens barrel to the bottom of the first lens barrel, the first lens portion being located inside the first mounting hole, and the first lens portion protruding from the first mounting hole being located outside the first receiving space.
3. The camera module according to claim 1, characterized in that, The first camera device further includes a first retaining ring and a second retaining ring, both of which are fixed within the first receiving space. The first retaining ring is located above the first lens barrel, and the second retaining ring is located below the first lens barrel.
4. The camera module according to claim 1, characterized in that, The first camera device further includes a first drive coil and a first magnetic element. The first drive coil is fixed to the inner wall of the first receiving space, and the first magnetic element is fixed to the outer surface of the first lens barrel. The first drive coil and the first magnetic element can drive the first lens barrel to move along the first direction.
5. The camera module according to claim 1, characterized in that, The camera module further includes a second camera device, which includes a second lens barrel and a second lens. The second camera device has a second receiving space, which is connected to the first receiving space. The second lens barrel is located in the second receiving space. The second lens is assembled with the second lens barrel. The second lens is partially located in the second receiving space and partially protrudes out of the second receiving space and is located in the first receiving space. The second lens is located below the first lens assembly.
6. The camera module according to claim 5, characterized in that, The second lens barrel is provided with a second mounting hole, which extends from the top of the second lens barrel to the bottom of the second lens barrel. The second mounting hole is provided with a first thread, and the outer side of the second lens is provided with a second thread. The first thread and the second thread are engaged.
7. The camera module according to claim 5, characterized in that, The second camera device further includes a second magnetic element, and a mating groove is provided on the outer side of the second lens barrel, and the second magnetic element is installed in the mating groove.
8. The camera module according to claim 7, characterized in that, The second camera further comprises a second driving coil fixed to an inner side wall of the second receiving space, and the second driving coil and the second magnetic element can drive the second lens barrel to move in the first direction.
9. The camera module according to claim 5, characterized in that, The second camera further comprises an elastic member fixed in the second receiving space, and the elastic member is located above the second lens barrel.