Simple focusing device of camera module with threaded lens

Abstract

The embodiment of the utility model belongs to the technical field of lens focusing. The utility model further relates to a simple focusing device of the camera module with the threaded lens, the simple focusing device comprises a shell, a light source panel and a teleconverter located below the light source panel are arranged in the shell, the light source panel is used for placing the SFR image, the bottom of the shell is detachably connected with a focusing mechanism, and the focusing mechanism is used for focusing the SFR image. And the focusing mechanism is used for adjusting the focusing of the camera module lens. According to the camera module, the focusing device is introduced, and the focusing operation is performed before the full-sealing thread glue is adopted for fixing, so that the influence of AA equipment instability and material tolerance on the performance of the camera module can be compensated, the analysis yield of the camera module is remarkably improved, defective products are reduced, the production cost is reduced, and the market competitiveness of products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lens focusing, and more specifically, to a simple focusing device for a threaded lens camera module. Background Art

[0002] In the field of camera module manufacturing, especially for camera modules with large-angle, fixed-focus threaded lenses, their imaging quality and application effects are directly related to the performance of the final product. Large-angle camera modules are widely used in key fields such as drones, security monitoring, and automotive driving assistance due to their significant advantages in distortion control, price, imaging quality, and low-light performance. However, such modules face challenges brought by AA (Active Alignment) equipment and material tolerances during the assembly process. These factors often lead to unsatisfactory resolution effects at far focus and near focus of the module, affecting the clarity of imaging.

[0003] Existing camera modules, as Figure 4 shown, mainly consist of a lens and a base threadedly connected to the lens. The lens and the base are usually fixed with fully sealed thread glue. Once fixed, it is difficult to adjust, and it is impossible to compensate for the imaging deviation caused by equipment instability and material tolerances during the AA process. Therefore, developing a simple focusing device that can compensate for these adverse factors through focusing after AA has become the key to improving the performance of camera modules. Summary of the Utility Model

[0004] The technical problem to be solved by the embodiments of the present utility model is that in the traditional process flow, the lens and the base are usually fixed with fully sealed thread glue. Once fixed, it is difficult to adjust, and it is impossible to compensate for the imaging deviation caused by equipment instability and material tolerances during the AA process.

[0005] To solve the above technical problem, the present utility model adopts the following technical solutions:

[0006] A simple focusing device for a threaded lens camera module, comprising: a housing, a light source panel is arranged in the housing and a teleconverter is located below the light source panel. The light source panel is used for placing an SFR chart. The bottom of the housing is detachably connected with a focusing mechanism, and the focusing mechanism is used for adjusting the focusing of the lens of the camera module.

[0007] As an improved mode of the utility model, the focusing mechanism includes a connecting ring arranged at the bottom of the housing. The bottom of the connecting ring is connected with an external thread pipe through a bearing. The bottom of the external thread pipe is fixedly connected with a first tapered pipe. A plurality of contraction openings are arranged at the bottom of the first tapered pipe. An internal thread pipe is arranged between the external thread pipe and the first tapered pipe. The inner wall of the internal thread pipe is in threaded connection with the external thread pipe. A second tapered pipe which is in sliding connection with the outer surface of the first tapered pipe is arranged at the bottom of the inner wall of the internal thread pipe.

[0008] As an improved mode of the utility model, a driving member is arranged between the external thread pipe and the connecting ring. The driving member is used for driving the external thread pipe to rotate.

[0009] As an improved mode of the utility model, the driving member includes a motor fixedly installed on one side of the connecting ring and a toothed ring fixedly sleeved on the outer surface of the external thread pipe. A gear is connected between the toothed ring and the motor.

[0010] As an improved mode of the utility model, the connecting ring is fixedly installed at the bottom of the housing.

[0011] As an improved mode of the utility model, the connecting ring is detachably arranged at the bottom of the housing, and a connecting piece is arranged between the external thread pipe and the housing.

[0012] As an improved mode of the utility model, the connecting piece includes a hook installed on the connecting ring and a buckle arranged on the housing. The buckle and the hook are buckled together.

[0013] As an improved mode of the utility model, a groove is opened at the bottom of the housing. A limiting ring is inserted in the groove. The bottom of the limiting ring is fixedly connected with the top of the connecting ring.

[0014] As an improved mode of the utility model, a sliding seat is fixedly installed on one side of the housing. A guide rail is slidably connected to the inner wall of the sliding seat. A support platform is fixedly installed at the bottom of the guide rail.

[0015] As an improved mode of the utility model, a clamp is installed on the top of the support platform.

[0016] Compared with the prior art, the embodiment of the utility model mainly has the following beneficial effects:

[0017] By introducing a focusing device in this application, the focusing operation can be carried out before using the fully sealed thread glue, which can compensate for the influence of the instability of the AA device and the material tolerance on the performance of the camera module, thereby significantly improving the resolution yield of the camera module, reducing the generation of defective products, thus reducing the production cost and improving the market competitiveness of the product. Description of the Drawings

[0018] Figure 1 Schematic structural diagram of the simple focusing device for the threaded lens camera module provided by this application;

[0019] Figure 2 Schematic structural diagram of the shrinkage opening of the simple focusing device for the threaded lens camera module provided by this application;

[0020] Figure 3 Schematic structural diagram of the fixture of the simple focusing device for the threaded lens camera module provided by this application;

[0021] Figure 4 Schematic structural diagram of the existing camera module;

[0022] Figure 5 Schematic diagram of the SFR diagram.

[0023] Labels in the figure:

[0024] 1. Housing;

[0025] 2. Light source panel;

[0026] 3. Teleconverter;

[0027] 4. Focusing mechanism; 401. Connecting ring; 402. Limiting ring; 403. Outer threaded tube; 404. Tooth ring; 405. Motor; 406. Gear; 407. First conical tube; 408. Shrinkage opening; 409. Inner threaded tube; 410. Second conical tube;

[0028] 5. Hook;

[0029] 6. Buckle;

[0030] 7. Support platform; 701. Guide rail; 702. Slide seat;

[0031] 8. Fixture. Detailed implementation manners

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field of this utility model; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The mention of "embodiment" in this text means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of this utility model. The appearance of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0033] As described in the background art, the existing camera module is asFigure 4 As shown in Figure 4 , it mainly consists of a lens and a base that is threadedly connected to the lens. The lens and the base are usually fixed with fully sealed thread glue. Once fixed, it is difficult to adjust, and it is impossible to compensate for the imaging deviation caused by equipment instability and material tolerance during the AA process. Therefore, developing a simple focusing device that can compensate for these adverse factors through focusing after AA has become the key to improving the performance of the camera module.

[0034] To solve this technical problem, the present utility model provides a simple focusing device for a camera module with a threaded lens.

[0035] Specifically, please refer to Figures 1-3 . The simple focusing device for a camera module with a threaded lens specifically includes: Figures 1-3 A housing 1, inside which a light source panel 2 and a teleconverter 3 located below the light source panel 2 are provided. The light source panel 2 is used to place the SFR chart. The bottom of the housing 1 is detachably connected with a focusing mechanism 4, and the focusing mechanism 4 is used to adjust the focusing of the camera module lens.

[0036] For the simple focusing device of the camera module with a threaded lens provided by the present utility model, in this application, by introducing a focusing device and performing a focusing operation before fixing with fully sealed thread glue, the influence of AA equipment instability and material tolerance on the performance of the camera module can be compensated, thereby significantly improving the resolution yield of the camera module, reducing the generation of defective products, thus reducing production costs and enhancing the market competitiveness of the product.

[0037] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings.

[0038] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] Embodiment 1 of the simple focusing device for a camera module with a threaded lens of the present utility model

[0041] The simple focusing device for a camera module with a threaded lens of the present utility model includes: a housing 1, inside which a light source panel 2 and a teleconverter 3 located below the light source panel 2 are provided. The light source panel 2 is used to place the SFR chart, and the SFR chart is as shown in Figure 5 .

[0042] Figure 5As shown, a focusing mechanism 4 is detachably connected to the bottom of the housing 1. The focusing mechanism 4 is used to adjust the focus of the camera module lens. In this application, by introducing a focusing device, the focusing operation is carried out before using fully sealed thread glue, which can compensate for the instability of the AA device and the influence of material tolerance on the performance of the camera module, thereby significantly improving the resolution yield of the camera module, reducing the generation of defective products, thus reducing production costs and improving the market competitiveness of the product.

[0043] Figure 4 At point A in [Figure] is marked as the base, and at point B is marked as the lens.

[0044] Furthermore, as Figures 1-3 shown, the focusing mechanism 4 includes a connecting ring 401 arranged at the bottom of the housing 1. The bottom of the connecting ring 401 is connected with an external thread tube 403 through a bearing. The bottom of the external thread tube 403 is fixedly connected with a first tapered tube 407. A plurality of contraction openings 408 are arranged at the bottom of the first tapered tube 407. An internal thread tube 409 is arranged between the external thread tube 403 and the first tapered tube 407. The inner wall of the internal thread tube 409 is threadedly connected with the external thread tube 403. The bottom of the inner wall of the internal thread tube 409 is provided with a second tapered tube 410 that is slidably connected to the outer surface of the first tapered tube 407. When the internal thread tube 409 is rotated, if the internal thread tube 409 rises, the bottom opening of the first tapered tube 407 can be contracted by the extrusion of the second tapered tube 410 on the first tapered tube 407, and when the internal thread tube 409 descends, the extrusion on the first tapered tube 407 is released, causing the bottom opening of the first tapered tube 407 to reset; this structural design can realize the clamping and loosening of the lens, with convenient and fast operation, and is convenient for the center of the lens to correspond to the center of the external thread tube 403.

[0045] Furthermore, a driving member is arranged between the external thread tube 403 and the connecting ring 401. The driving member is used to drive the external thread tube 403 to rotate. In addition to using the driving member to drive the external thread tube 403 to rotate, when no driving member is provided, manual rotation can be used. This flexibility enables the focusing device to adapt to various different working environments and requirements, improving the applicability of the device.

[0046] Furthermore, as Figure 1 shown, the driving member includes a motor 405 fixedly installed on one side of the connecting ring 401 and a toothed ring 404 fixedly sleeved on the outer surface of the external thread tube 403. A gear 406 is connected between the toothed ring 404 and the motor 405. The motor 405 can drive the toothed ring 404 to rotate through the gear 406, and then drive the external thread tube 403 to rotate. The driving method of the motor 405 can achieve precise rotation control, improve the focusing accuracy, can adjust the focal length of the lens more accurately, and improve the imaging quality of the camera module. In addition, the motor 405 drive can reduce the error of manual operation, improving the consistency and reliability of focusing.

[0047] Embodiment 2 of the Simple Focusing Device for the Threaded Lens Camera Module of the Present Utility Model

[0048] For the simple focusing device of the threaded lens camera module of the present utility model, the connecting ring 401 is fixedly installed at the bottom of the housing 1, making the structure more stable and reliable. This fixed installation method can ensure that there will be no looseness or displacement between the connecting ring 401 and the housing 1 during use, guarantee the normal operation of the focusing device. The stable structure helps to improve the accuracy and stability of focusing, avoiding focusing errors caused by structural looseness. At the same time, the fixed installation also makes the device more durable, capable of withstanding certain external force impacts and vibrations, and extending the service life of the device.

[0049] Embodiment 3 of the Simple Focusing Device for the Threaded Lens Camera Module of the Present Utility Model

[0050] For the simple focusing device of the threaded lens camera module of the present utility model, the connecting ring 401 is detachably arranged at the bottom of the housing 1, and a connecting piece is arranged between the external thread tube 403 and the housing 1. The detachable arrangement can facilitate the replacement of the focusing mechanism 4 with different-sized first tapered tubes 407 according to the specifications of the lens to meet the usage requirements of different lenses, improving the versatility of the device. In practical applications, different specifications of lenses may require different-sized first tapered tubes 407 for clamping and fixing. The detachable design can replace the appropriate focusing mechanism 4 according to the actual situation, enabling the device to adapt to various different specifications of lenses and improving the applicability of the device.

[0051] Furthermore, as Figure 1 shown, the connecting piece includes a hook 5 installed on the connecting ring 401 and a buckle 6 arranged on the housing 1. The buckle 6 and the hook 5 are buckled together. The buckling of the buckle 6 and the hook 5 can connect the connecting ring 401 and the housing 1 together. The connection method is simple and reliable, facilitating installation and disassembly. This connection method is easy to operate. Only by buckling the hook 5 and the buckle 6 can the connection between the connecting ring 401 and the housing 1 be achieved. When disassembling, only need to pull the buckle 6 to separate. The simple operation method improves the usability of the device, enabling users to quickly replace the focusing mechanism 4.

[0052] Furthermore, as Figure 2 shown, a groove is opened at the bottom of the housing 1, and a limiting ring 402 is inserted into the groove. The bottom of the limiting ring 402 is fixedly connected to the top of the connecting ring 401. The insertion of the limiting ring 402 into the groove can limit the connection between the housing 1 and the connecting ring 401, improving the stability of the connection between the housing 1 and the connecting ring 401.

[0053] Embodiment 3 of the Simple Focusing Device for the Threaded Lens Camera Module of the Present Utility Model

[0054] For the simple focusing device of the utility model with a threaded lens camera module, further, as Figure 3 shown, a sliding seat 702 is fixedly installed on one side of the housing 1. A guide rail 701 is slidably connected to the inner wall of the sliding seat 702. A support platform 7 is fixedly installed at the bottom of the guide rail 701. The guide rail 701 and the sliding seat 702 limit the housing 1. During the rotation of the lens, the housing 1 needs to move up and down. The guide rail 701 and the sliding seat 702 can limit the movement direction of the housing 1, prevent shaking or deviation, and the stable up and down process can ensure that the distance between the lens and the base is adjusted accurately, improving the focusing accuracy.

[0055] Further, as Figure 3 shown, a fixture 8 is installed on the top of the support platform 7. The fixture 8 is used to fix the base to prevent the base from rotating with the lens.

[0056] During use, the original fixed-focus threaded module AA process is: apply full-seal thread glue to all points between the lens and the base → perform AA with the PCBA → perform analysis and testing → discard NG defects;

[0057] The fixed-focus threaded module AA process adopted in this application is: first apply four-point glue to the lens → perform AA with the PCBA → perform analysis and testing → if NG, refocusing can be performed again → after OK, apply full-seal glue to the threaded part between the lens and the base. Such a setting makes the camera module not fully sealed with glue. Therefore, refocusing can be performed after NG, and then full-seal glue is applied to achieve fixation;

[0058] The focusing process is as follows: Place the SFR diagram on the light source panel 2, insert the lens into the first tapered tube 407, rotate the internal threaded tube 409 to move the internal threaded tube 409 upward, so as to drive the bottom opening of the first tapered tube 407 to contract and clamp the lens. Then, clamp and fix the base through the fixture 8. The motor 405 drives the external threaded tube 403 to rotate through the gear 406, and then rotates the lens. When the lens moves up and down during rotation, the housing 1 moves up and down accordingly. By rotating the lens, the distance between the base and the lens is adjusted to achieve adjustment. During the focusing process, the lens synchronously takes the SFR diagram, and the circuit board performs analysis.

[0059] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. The preferred embodiments of the present utility model are shown in the drawings, but they do not limit the patent scope of the present utility model. The present utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing specific embodiments, or perform equivalent replacements for some of the technical features. Any equivalent structures directly or indirectly using the content of the specification and drawings of the present utility model in other related technical fields are similarly within the scope of the patent protection of the present utility model.

Claims

1. A simple focusing device for a camera module with a threaded lens, characterized in that: include: A shell (1), wherein a light source panel (2) and a teleconverter (3) located below the light source panel (2) are arranged inside the shell (1), wherein the light source panel (2) is used to place an SFR map, and a focusing mechanism (4) is detachably connected to the bottom of the shell (1), wherein the focusing mechanism (4) is used to adjust the focus of a camera module lens.

2. The simple focusing device of the camera module with a threaded lens according to claim 1, characterized in that: The focusing mechanism (4) comprises a connecting ring (401) arranged at the bottom of the housing (1); the bottom of the connecting ring (401) is connected to an externally threaded tube (403) via a bearing; the bottom of the externally threaded tube (403) is fixedly connected to a first tapered tube (407); the bottom of the first tapered tube (407) is provided with a plurality of contraction openings (408); an internally threaded tube (409) is arranged between the externally threaded tube (403) and the first tapered tube (407); the inner wall of the internally threaded tube (409) is threadedly connected to the externally threaded tube (403); and the bottom of the inner wall of the internally threaded tube (409) is provided with a second tapered tube (410) slidably connected to the outer surface of the first tapered tube (407).

3. The simple focusing device of the camera module with a threaded lens according to claim 2, characterized in that: A driving member is provided between the externally threaded tube (403) and the connecting ring (401), and the driving member is used to drive the externally threaded tube (403) to rotate.

4. The simple focusing device of the camera module with a threaded lens according to claim 3, characterized in that: The driving member comprises a motor (405) fixedly mounted on one side of the connecting ring (401) and a gear ring (404) fixedly sleeved on the outer surface of the external threaded tube (403), and a gear (406) is connected between the gear ring (404) and the motor (405).

5. The simple focusing device of the camera module with a threaded lens according to claim 4, characterized in that: The connecting ring (401) is fixedly mounted on the bottom of the housing (1).

6. The simple focusing device of the camera module with a threaded lens according to claim 4, characterized in that: The connecting ring (401) is detachably arranged at the bottom of the shell (1), and a connecting piece is arranged between the external threaded tube (403) and the shell (1).

7. The simple focusing device of the camera module with a threaded lens according to claim 6, characterized in that: The connecting member comprises a hook (5) mounted on the connecting ring (401) and a buckle (6) arranged on the housing (1), the buckle (6) being buckled with the hook (5).

8. The simple focusing device of the camera module with a threaded lens according to claim 6, characterized in that: The bottom of the housing (1) is provided with a groove, in which a limiting ring (402) is inserted, and the bottom of the limiting ring (402) is fixedly connected to the top of the connecting ring (401).

9. The simple focusing device of the camera module with a threaded lens according to claim 1, characterized in that: A slide seat (702) is fixedly mounted on one side of the housing (1); a guide rail (701) is slidably connected to the inner wall of the slide seat (702); and a support platform (7) is fixedly mounted on the bottom of the guide rail (701).

10. The simple focusing device of the camera module with a threaded lens according to claim 9, characterized in that: A clamp (8) is installed on the top of the support platform (7).

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