An endoscopic camera module testing device

Abstract

This utility model provides an endoscopic camera module testing device, belonging to the field of camera module production equipment. The device includes a frame with a transmission mechanism inside. A target testing box is located at one end of the frame. The transmission mechanism drives a module clamping mechanism to move along a preset straight path towards the target testing box. The module clamping mechanism includes an adapter base, a support base, and a limiting and fixing module. The adapter base is connected to the transmission mechanism, and the support base is connected to the adapter base. The support base has multiple module mounting positions. The limiting and fixing module covers the upper part of the support base and is used to press the module firmly into the module mounting position. The multi-positioning structure effectively avoids module position shift during testing, ensuring clear imaging and accurate positioning of the test target, providing strong assurance for the reliability of the test data.

Description

Technical Field

[0001] This utility model relates to the field of camera module production equipment, specifically an endoscopic camera module testing device. Background Technology

[0002] Endoscopic camera modules, with their compact size and high-definition imaging capabilities, have been widely used in medical diagnostics, industrial pipeline inspection, and internal maintenance of electronic equipment. The imaging quality of these modules directly determines the accuracy of the test results; therefore, they must undergo rigorous testing before leaving the factory to ensure that key performance indicators such as resolution, color reproduction, and distortion rate meet the required standards.

[0003] In existing technologies, most traditional testing equipment adopts a single-module testing mode, which can only test one camera module at a time, resulting in low testing efficiency and difficulty in meeting the needs of large-scale production. Secondly, the positioning accuracy of existing equipment is poor. Modules are prone to positional shifts during testing, leading to unclear or inaccurate imaging of the test target, thus affecting the reliability of the test data. Some equipment uses manual adjustment of module positions, which not only increases the workload of operators but also makes it difficult to ensure consistency in each adjustment, resulting in significant testing errors. Utility Model Content

[0004] In order to overcome some of the problems mentioned in the background above, this invention provides an endoscopic camera module testing device.

[0005] The technical solution adopted by this utility model is as follows: an endoscopic camera module testing device includes a frame, a transmission mechanism is provided in the frame, a target testing box is provided at one end of the frame, and the transmission mechanism is used to drive the module clamping mechanism to move towards the target testing box along a preset straight path;

[0006] The module clamping mechanism includes an adapter base, a bearing base, and a limiting and fixing module. The adapter base is connected to the transmission mechanism, and the bearing base is connected to the adapter base. The bearing base is provided with multiple module mounting positions, and the bottom of each module mounting position is configured with a conductive structure for electrical connection with the module.

[0007] The limiting and fixing module covers the upper part of the bearing base and is used to press the module into the module installation;

[0008] The target test box contains at least two types of test targets distributed in different orientations. The upper part of the target test box is equipped with a rotation drive unit, which drives the support base to rotate around a preset axis, so that the module can acquire images of standard test targets in different orientations.

[0009] Furthermore, the transmission mechanism includes a first motor, a transmission screw, and a slider. One end of the transmission screw is connected to the output shaft of the first motor via a coupling. The slider is connected to the transmission screw via a threaded transmission. A connecting post is provided on the upper part of the slider, and the adapter base is axially connected to the connecting post.

[0010] The transmission lead screw is provided with a limiting ring, which limits the movement endpoint of the slider.

[0011] Furthermore, the connection between the adapter base and the bearing base is a wedge-shaped fit connection. There are two bearing bases, which are symmetrically arranged along the center line of the adapter base. Multiple module mounting positions are distributed in a linear direction. The inner wall of each module mounting position is provided with a positioning step for auxiliary positioning.

[0012] The bearing base is provided with multiple limiting grooves, which cooperate with the limiting and fixing module to fix the module.

[0013] Furthermore, the limiting and fixing module includes a fixing plate and a plurality of elastic limiting blocks. The fixing plate covers the upper part of the bearing base. The fixing plate is provided with a through hole corresponding to the module mounting position. The elastic limiting blocks are disposed on the side wall of the through hole.

[0014] The fixing plate is also provided with a limiting post, which is magnetically attracted to the limiting groove.

[0015] Furthermore, the target testing box also includes a box body and a target frame, and the test target is connected to the inner wall of the box body through the target frame;

[0016] The rotary drive unit includes a second motor, a connecting plate, and a telescopic rod. The second motor is connected to the top wall of the housing through the connecting plate, and the telescopic rod is connected to the output end of the second motor. The second motor drives the telescopic rod to rotate, and the telescopic rod extends downward to connect with the adapter base.

[0017] Furthermore, it also includes a controller, which is electrically connected to the conductive structure of the transmission mechanism, the rotary drive unit, and the support base. The controller is used to control the movement of the transmission mechanism and the rotation of the rotary drive unit, and to receive test data and status signals of each component transmitted by the module through the conductive structure.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The support base has multiple module mounting positions, and the support base has two symmetrically arranged along the center line of the adapter base, which can test multiple endoscopic camera modules at the same time, greatly improving testing efficiency and meeting the needs of mass production.

[0020] The inner wall of the module mounting position is equipped with positioning steps for initial module positioning. The elastic limiting blocks of the limiting and fixing module can elastically press against the module from the side, while the limiting posts of the fixing plate and the limiting grooves of the bearing base magnetically engage, further enhancing the stability and positional accuracy of the module fixation. This multi-positioning structure effectively prevents module positional shift during testing, ensuring clear imaging and accurate positioning of the test target, and providing strong support for the reliability of test data. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of an endoscopic camera module testing device according to an embodiment of the present invention;

[0022] Figure 2 This is a top view schematic diagram of the endoscopic camera module testing equipment according to an embodiment of the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of the AA section along the middle edge;

[0024] Figure 4 for Figure 2 Schematic diagram of the BB section along the middle.

[0025] Figure 5 This is an exploded view of the endoscopic camera module testing equipment (excluding the target testing box) according to an embodiment of the present invention.

[0026] In the picture:

[0027] 1. Frame; 2. Transmission mechanism; 21. First motor; 22. Transmission screw; 23. Slider; 24. Connecting column; 25. Limiting ring; 3. Adapter base; 4. Target test box; 41. Second motor; 42. Connecting plate; 43. Telescopic rod; 44. Box body; 45. Target frame; 5. Limiting and fixing module; 51. Fixing plate; 52. Elastic limiting block; 53. Limiting column; 6. Bearing base; 61. Module mounting position; 62. Limiting groove. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0030] like Figures 1-5 As shown, in some embodiments, an endoscopic camera module testing device includes a frame 1, a transmission mechanism 2, a module clamping mechanism, and a target testing box 4. These components work together to achieve efficient and high-precision testing of the endoscopic camera module. The frame 1 serves as the basic support component of the device, ensuring stability during testing through its stable structure.

[0031] The transmission mechanism 2 is installed in the mounting slot inside the frame 1. The module clamping mechanism is connected to the transmission mechanism 2 and can move along a preset straight path under the drive of the transmission mechanism 2. Through the drive of the transmission mechanism 2, the module clamping mechanism can move back and forth between the installation station and the testing station. Specifically, the target test box 4 is located at the testing station and is fixedly installed at one end of the frame 1. Its opening faces the transmission mechanism 2, which facilitates the module clamping mechanism to enter the box for testing.

[0032] Specifically, the module clamping mechanism is used to install and fix the endoscopic camera module, ensuring the module's stable position during testing. It includes an adapter base 3, a support base 6, and a limiting and fixing module 5. The adapter base 3 serves as a connecting component, reliably connecting to the transmission mechanism 2, while the support base 6 receives stable support through the adapter base 3. Of particular note is that the support base 6 has multiple module mounting positions 61, each equipped with a special conductive structure at its bottom. These conductive structures enable a stable electrical connection with the module under test, ensuring reliable transmission of test signals.

[0033] The limiting and fixing module 5 adopts a detachable design and can completely cover the area above the support base 6. Its core function is to firmly fix the module under test in the module mounting position 61 with precise mechanical pressure, preventing displacement or loosening during the test, thereby ensuring the accuracy of the test data.

[0034] The target test chamber 4 contains at least two types of test targets distributed along different orientations. These targets are rigorously calibrated to comprehensively evaluate various performance indicators of the camera module. More notably, the upper part of the target test chamber 4 is equipped with a rotation drive unit. This unit precisely controls the rotation of the support base 6 around a preset axis, allowing the module under test to sequentially align with standard test targets at different orientations for image acquisition, achieving comprehensive performance testing.

[0035] Furthermore, in some embodiments, it includes a first motor 21, a transmission screw 22, a slider 23, a connecting post 24, and a limiting ring 25.

[0036] The first motor 21 serves as the power source, and its output shaft is reliably connected to one end of the transmission screw 22 via a coupling, ensuring the stability and accuracy of power transmission. The transmission screw 22 and the threaded hole inside the slider 23 form a precision fit, realizing the conversion of rotary motion to linear motion through the threaded transmission principle.

[0037] The upper surface of slider 23 is specially designed with a connecting post 24. The top of the connecting post 24 is rotatably connected to the adapter base 3 via a bearing connection, ensuring flexibility and stability during movement. A position sensor is provided on the side of slider 23.

[0038] In addition, a limiting ring 25 is provided on the transmission screw 22. The limiting ring 25 is installed on the transmission screw 22 by means of a snap fastener. The limiting ring 25 can precisely adjust and limit the maximum travel of the slider 23 according to the test requirements, thereby ensuring the safety and reliability of the equipment operation.

[0039] The working principle of transmission mechanism 2 is as follows:

[0040] When the first motor 21 receives the test start command, it drives the transmission screw 22 to rotate synchronously through the coupling. The rotational motion of the transmission screw 22 is converted into the linear motion of the slider 23. The slider 23 drives the upper connecting column 24 and the module clamping mechanism to move together towards the target test box 4. When the slider 23 moves to contact the limit ring 25, the position sensor installed on the side of the slider 23 sends a position signal to the controller. After receiving the signal, the controller immediately sends a stop signal to the first motor 21. The first motor 21 stops rotating, and the slider 23 stops moving. At this time, the module on the module clamping mechanism is in a test position that can clearly photograph the target in the target test box 4. If it is necessary to return the module clamping mechanism to the initial position, the controller only needs to send a reverse signal to the first motor 21. The first motor 21 reverses, driving the transmission screw 22 to reverse, and the slider 23 can then drive the module clamping mechanism back to the initial position along the original path.

[0041] Furthermore, in some embodiments, the adapter base 3 and the support base 6 are connected by a wedge-shaped fit, which facilitates the installation and disassembly of the support base 6.

[0042] Specifically, the support base 6 consists of two identical components, which are strictly symmetrically distributed along the central axis of the connecting adapter base 3. Each support base 6 has multiple module mounting positions 61, which are evenly distributed in a linear arrangement to facilitate batch testing. The inner wall of the module mounting position 61 is machined with a precision positioning step structure, which provides auxiliary positioning for the module under test and ensures positional accuracy during testing.

[0043] In addition, the support base 6 is provided with multiple limiting grooves 62. These limiting grooves 62 cooperate with the limiting and fixing module 5 to form a reliable fixing mechanism, which can effectively fix the camera module to be tested and prevent displacement or loosening during the test.

[0044] Furthermore, in some embodiments, the limiting and fixing module 5 includes a fixing plate 51 and multiple elastic limiting blocks 52. The fixing plate 51 has an overall size that matches the support base 6 and can completely cover the upper surface of the support base 6. The fixing plate 51 has through holes at positions corresponding to the module mounting positions 61, and the diameter of these through holes is slightly larger than the outer diameter of the camera module under test.

[0045] Multiple elastic limiting blocks 52 are evenly distributed on the inner wall of the through hole. These blocks are made of rubber material with good elasticity and can generate a moderate clamping force on the inserted camera module.

[0046] In addition, a number of limiting posts 53 are vertically arranged on the lower surface of the fixing plate 51. The positions of these limiting posts 53 correspond one-to-one with the limiting grooves 62 on the bearing base 6. When the fixing plate 51 covers the upper part of the bearing base 6, the limiting posts 53 will be inserted into the limiting grooves 62 of the bearing base 6. Since the inner wall of the limiting groove 62 is provided with a magnetic material layer, the limiting posts 53 will generate a magnetic attraction force with the magnetic material layer, thereby firmly fixing the fixing plate 51 on the bearing base 6 and preventing the fixing plate 51 from loosening or shifting during the test.

[0047] The working principle of the module clamping mechanism is as follows:

[0048] When installing the endoscopic camera module, first, the two support bases 6 are installed on the adapter base 3 using a wedge fit, ensuring that the wedge protrusions are fully embedded in the wedge grooves to achieve precise positioning of the support bases 6. Then, the endoscopic camera modules are placed one by one into the module mounting positions 61 of the support bases 6, with the conductive contacts at the bottom of the module contacting the bottom of the module mounting position 61, and the shoulder of the module contacting the positioning step on the inner wall of the module mounting position 61, completing the initial positioning of the module.

[0049] Next, the fixing plate 51 is placed over the upper part of the two support bases 6, so that the through holes on the fixing plate 51 correspond one-to-one with the module mounting positions 61. The lens of the module protrudes through the through holes, and at the same time, the limiting post 53 at the bottom of the fixing plate 51 is inserted into the limiting groove 62 of the support base 6. Under the action of magnetic adsorption, the fixing plate 51 is firmly fixed. At this time, the elastic limiting block 52 on the side wall of the through hole will make close contact with the side of the module, and under the action of elastic force, it will press the module laterally, thereby stably fixing the module in the module mounting position 61, ensuring that the module is stable in position during the test and will not shake or shift.

[0050] Once the test is complete, simply lift the fixing plate 51 upwards to overcome the magnetic attraction force, and the fixing plate 51 can be removed from the bearing base 6. Then, the tested module can be taken out from the module mounting position 61 for the installation and testing of the next batch of modules.

[0051] Furthermore, in some embodiments, the target testing box 4 also includes a box body 44 and a target frame 45. The target frame 45 is securely connected to the inner wall of the box body 44 via an adjustable mounting mechanism, ensuring accurate positioning of the test target. The test target is mounted on the target frame 45. This connection method not only ensures stability during the testing process but also facilitates quick target replacement according to different testing needs.

[0052] The rotary drive unit includes a second motor 41, a connecting plate 42, and a telescopic rod 43. The second motor 41 is connected to the top wall of the housing 44 via the connecting plate 42, and the telescopic rod 43 is reliably connected to the output shaft of the second motor 41 via a coupling.

[0053] In operation, the second motor 41 precisely drives the telescopic rod 43 to rotate through the control system. At the same time, the telescopic rod 43 can extend downward along the axis according to the test requirements, and finally achieve a stable connection with the docking interface of the adapter base 3, thereby completing the power transmission of the entire drive system.

[0054] Furthermore, in some embodiments, the testing device also includes a controller, which is electrically connected to the conductive structure of the transmission mechanism 2, the rotary drive unit, and the support base 6, for controlling the movement of the transmission mechanism 2, the rotation of the rotary drive unit, and receiving test data and status signals of each component transmitted by the module through the conductive structure.

[0055] The overall testing process for this utility model is as follows:

[0056] Module installation phase:

[0057] The operator installs the two support bases 6 onto the adapter base 3 using a wedge fit, and then places the endoscopic camera modules to be tested one by one into the module mounting positions 61 of the support bases 6, ensuring that the modules are powered on properly. Next, the fixing plate 51 is placed over the upper part of the support bases 6, so that the limiting post 53 is inserted into the limiting groove 62. Under the action of magnetic adsorption and elastic limiting block 52, the module is firmly fixed.

[0058] Test execution phase:

[0059] The operator presses the start button, and the equipment begins to automatically execute the test program. First, the transmission mechanism 2 drives the module clamping mechanism to move towards the target test box 4 and stops after reaching the designated position. Then, the telescopic rod 43 of the rotary drive unit connects to the adapter base 3, and the second motor 41 drives the module to rotate. The module sequentially aligns with the test targets in different directions to acquire images, and the controller receives and processes the test data in real time. After all targets have been tested, the rotary drive unit stops working, the telescopic rod 43 separates from the adapter base 3, and the transmission mechanism 2 drives the module clamping mechanism to return to the initial position.

[0060] After the test is completed, the controller will display the test results, including the module's resolution, color reproduction, distortion rate, and other performance indicators, on the screen. Operators can view the test results and determine whether the module is qualified.

[0061] Module disassembly and next batch testing phase:

[0062] The operator removes the fixing plate 51 from the support base 6, takes the tested module out of the module mounting position 61, marks the qualified modules, and stores the unqualified modules separately for later analysis. Then, the steps of module installation, parameter setting, and test execution are repeated to test the next batch of endoscopic camera modules.

[0063] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. An endoscopic camera module testing apparatus comprising a rack (1), characterized in that, The frame (1) is provided with a transmission mechanism (2), and a target test box (4) is provided at one end of the frame (1). The transmission mechanism (2) is used to drive the module clamping mechanism to move along a preset straight path toward the target test box (4). The module clamping mechanism includes an adapter base (3), a bearing base (6), and a limiting and fixing module (5). The adapter base (3) is connected to the transmission mechanism (2), and the bearing base (6) is connected to the adapter base (3). The bearing base (6) is provided with multiple module mounting positions (61), and the bottom of the module mounting position (61) is configured with a conductive structure for electrical connection with the module. The limiting and fixing module (5) covers the upper part of the bearing base (6) and is used to press the module into the module installation; The target test box (4) contains at least two types of test targets distributed in different directions. The upper part of the target test box (4) is provided with a rotation drive unit. The rotation drive unit drives the support base (6) to rotate around a preset axis, so that the module can collect images of standard test targets in different directions.

2. The endoscopic camera module testing equipment according to claim 1, characterized in that, The transmission mechanism (2) includes a first motor (21), a transmission screw (22) and a slider (23). One end of the transmission screw (22) is connected to the output shaft of the first motor (21) through a coupling. The slider (23) is connected to the transmission screw (22) through a threaded transmission. A connecting post (24) is provided on the upper part of the slider (23). The adapter base (3) is axially connected to the connecting post (24). The transmission screw (22) is provided with a limiting ring (25), which limits the movement endpoint of the slider (23).

3. The endoscopic camera module testing equipment according to claim 1, characterized in that, The connection between the adapter base (3) and the bearing base (6) is a wedge-shaped fit connection. There are two bearing bases (6), which are symmetrically arranged along the center line of the adapter base (3). Multiple module mounting positions (61) are distributed in a linear direction. The inner wall of the module mounting position (61) is provided with a positioning step for auxiliary positioning. The bearing base (6) is provided with multiple limiting grooves (62), which cooperate with the limiting and fixing module (5) to fix the module.

4. The endoscopic camera module testing equipment according to claim 3, characterized in that, The limiting and fixing module (5) includes a fixing plate (51) and multiple elastic limiting blocks (52). The fixing plate (51) covers the upper part of the bearing base (6). The fixing plate (51) has a through hole corresponding to the module mounting position (61). The elastic limiting blocks (52) are disposed on the side wall of the through hole. The fixing plate (51) is also provided with a limiting post (53), which is magnetically attracted to the limiting groove (62).

5. The endoscopic camera module testing equipment according to claim 3, characterized in that, The target test box (4) also includes a box body (44) and a target frame (45), and the test target is connected to the inner wall of the box body (44) through the target frame (45); The rotary drive unit includes a second motor (41), a connecting plate (42), and a telescopic rod (43). The second motor (41) is connected to the top wall of the housing (44) through the connecting plate (42). The telescopic rod (43) is connected to the output end of the second motor (41). The second motor (41) drives the telescopic rod (43) to rotate. The telescopic rod (43) extends downward and connects to the adapter base (3).

6. The endoscopic camera module testing equipment according to claim 1, characterized in that, It also includes a controller, which is electrically connected to the conductive structure of the transmission mechanism (2), the rotary drive unit and the bearing base (6) to control the movement of the transmission mechanism (2), the rotation of the rotary drive unit, and to receive test data and status signals of each component transmitted by the module through the conductive structure.

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