Performance testing device of camera module

Abstract

The utility model relates to the technical field of camera module testing, and discloses a camera module performance testing device, which comprises a support assembly, a collimator and a position adjusting table, and is characterized in that the collimator is supported on the support assembly; the position adjusting table is arranged below the collimator, the camera module is installed on the position adjusting table, the position adjusting table is used for adjusting the position and the inclination angle of the camera module, and the camera module is used for shooting an image of a test graphic card in the collimator. According to the performance testing device of the camera module, the camera module is installed on the position adjusting table, the position and the inclination angle of the camera module are adjusted through the position adjusting table, and the camera module is used for shooting an image of a test graphic card in the collimator, so that the performance of the camera module is analyzed conveniently; and the focal length of the camera module is shortened by using the collimator, so that the space required by the test can be greatly reduced, the calibration test time is shortened, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of camera module testing, in particular to a performance testing device for a camera module. Background Art

[0002] Since the focal length of a vehicle-mounted telephoto module is generally greater than 10 meters, the calibration of the vehicle-mounted telephoto module needs to be carried out in a large-scale space, which will result in a large volume of the test equipment, low efficiency and time-consuming calibration of the vehicle-mounted telephoto module. Utility Model Content

[0003] The purpose of the utility model is to provide a performance testing device for a camera module, which solves the technical problems in the prior art that the focal length of the vehicle-mounted telephoto module is relatively large, resulting in a large test equipment volume, low calibration efficiency and long time consumption.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a performance testing device for a camera module, comprising:

[0006] Bracket assembly;

[0007] A collimator, the collimator being supported on the bracket assembly;

[0008] A position adjustment platform is arranged below the collimator, a camera module is mounted on the position adjustment platform, the position adjustment platform is used to adjust the position and tilt angle of the camera module, and the camera module is used to capture the image of the test chart in the collimator.

[0009] The performance testing device of the camera module installs the camera module on a position adjustment table, and adjusts the position and tilt angle of the camera module through the position adjustment table. The camera module is used to capture the image of the test chart in the collimator to analyze the performance of the camera module. The collimator is used to shorten the focal length of the camera module, which can greatly reduce the space required for testing, shorten the time of calibration testing, and improve efficiency.

[0010] As a preferred solution of the performance testing device of the above-mentioned camera module, the position adjustment platform comprises:

[0011] X-axis slide;

[0012] A Z-axis slide, the Z-axis slide is arranged on the X-axis slide, and the X-axis slide is used to adjust the position of the Z-axis slide along the X-axis direction;

[0013] An XY-axis tilt adjustment table, the XY-axis tilt adjustment table is arranged on the Z-axis slide table, and the Z-axis slide table is used to adjust the position of the XY-axis tilt adjustment table along the Z-axis direction;

[0014] A fixture is arranged on the XY axis tilt adjustment platform, the camera module is clamped on the fixture, and the XY axis tilt adjustment platform is used to adjust the tilt angle of the fixture and the camera module along the X axis or Y axis direction.

[0015] The camera module can be clamped and its position and tilt angle can be adjusted through the position adjustment platform. The structure is relatively simple and the position adjustment is precise.

[0016] As a preferred solution of the performance test device of the above-mentioned camera module, the fixture comprises:

[0017] A clamping base, wherein the clamping base is arranged on the XY-axis tilt adjustment platform, and the camera module is installed in the clamping base;

[0018] A clamping cover, one side of which is hinged to the clamping base, and the other side of which is connected to the clamping base via a locking member, and the lens of the camera module extends from the clamping base via the clamping cover.

[0019] The clamp can clamp and accommodate the camera module through the clamping base, and fix the position of the camera module through the clamping cover to prevent the camera module from falling out.

[0020] As a preferred solution of the performance testing device of the above-mentioned camera module, one end of the locking member is hinged to the clamping base, and the other end of the locking member is provided with a hook, and the hook can be hooked on the clamping cover.

[0021] The locking member has a simple structure and is convenient to lock and unlock.

[0022] As a preferred solution of the performance testing device of the camera module, the fixture further includes:

[0023] An elastic member is arranged on the clamping base, and the elastic member is elastically abutted against an end of the locking member where the hook is not arranged, so as to push the locking member to rotate, so that the hook is hooked on the clamping cover.

[0024] The provision of the elastic member prevents the locking member from being separated from the clamping cover plate, and the locking effect is better.

[0025] As a preferred solution of the performance test device of the camera module, the performance test device of the camera module further includes:

[0026] The conveying device is provided with the position adjustment platform, and the conveying device is used to drive the position adjustment platform to move along the Y-axis direction so as to move between the loading position and the testing position.

[0027] The arrangement of the conveying device enables the position adjustment platform to move between the loading position and the testing position, so as to facilitate installation of the camera module at the loading position and testing of the camera module at the testing position.

[0028] As a preferred solution of the performance test device of the camera module, the collimator comprises:

[0029] A shell, the shell is supported on the bracket assembly, and a through hole is provided at the bottom of the shell;

[0030] A graphic card assembly is arranged in the housing for movement along the Z-axis direction, and the graphic card assembly is arranged opposite to the through hole.

[0031] The chart card assembly is movably arranged in the housing along the Z-axis direction so as to adjust the height position of the chart card assembly according to different test requirements.

[0032] As a preferred solution of the performance testing device of the camera module, the bracket assembly is provided with a first mounting plate, and the first mounting plate is provided with a first mounting hole;

[0033] The collimator is mounted on a second mounting plate, the second mounting plate is connected to the first mounting plate, a second mounting hole is provided on the second mounting plate, the second mounting hole is arranged opposite to the first mounting hole, and the collimator passes through the first mounting hole and the second mounting hole.

[0034] The collimator can be installed conveniently by providing the first mounting plate and the second mounting plate.

[0035] As a preferred solution of the performance testing device of the camera module, the first mounting plate is provided with a plurality of first fixing holes spaced apart in the circumferential direction of the first mounting hole;

[0036] The second mounting plate is provided with a plurality of second fixing holes spaced apart circumferentially of the second mounting hole, the first fixing hole is arranged opposite to the second fixing hole, and a fixing member is passed through the corresponding second fixing hole and the first fixing hole to connect the first mounting plate with the second mounting plate.

[0037] The above fixing method is firm and reliable and easy to assemble and disassemble.

[0038] As a preferred solution of the performance testing device of the above-mentioned camera module, the second fixing hole is an arc-shaped hole.

[0039] The second fixing hole is an arc-shaped hole, so that the second mounting plate can adjust the installation angle to meet the installation requirements and avoid the situation where it cannot correspond to the first fixing hole.

[0040] Beneficial effects of the utility model:

[0041] The utility model proposes a performance testing device for a camera module, which installs the camera module on a position adjustment table, and adjusts the position and tilt angle of the camera module by the position adjustment table. The camera module is used to capture the image of a test chart card in a parallel light tube, so as to analyze the performance of the camera module. The focal length of the camera module is shortened by using the parallel light tube, which can greatly reduce the space required for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of a performance testing device for a camera module provided by the utility model;

[0043] Figure 2 This is a schematic diagram of the structure of the performance test device of the camera module provided by the utility model after removing the cover and the display device;

[0044] Figure 3 It is a structural schematic diagram of the position adjustment platform provided by the utility model;

[0045] Figure 4 It is a structural schematic diagram of the clamp provided by the utility model;

[0046] Figure 5 It is a schematic diagram of the structure of the locking member of the clamp provided by the utility model to be installed;

[0047] Figure 6 It is a structural schematic diagram of the collimator provided by the utility model;

[0048] Figure 7 This is a schematic diagram of the structure of the collimator provided by the utility model with part of the shell removed;

[0049] Figure 8 It is a structural schematic diagram of the bracket assembly provided by the utility model.

[0050] In the figure:

[0051] 1. Bracket assembly; 11. First mounting plate; 111. First fixing hole; 12. Second mounting plate; 121. Second mounting hole; 122. Second fixing hole;

[0052] 2. collimator; 21. housing; 22. chart card assembly;

[0053] 3. Position adjustment table; 31. X-axis slide table; 32. Z-axis slide table; 33. XY-axis inclination adjustment table;

[0054] 331. X-axis inclination adjustment slide; 332. Y-axis inclination adjustment slide; 34. Clamp; 35. Conveying device;

[0055] 341. Clamping base; 342. Clamping cover; 343. Locking member; 344. Hook; 345. Elastic member; 4. Cover; 5. Display device. DETAILED DESCRIPTION

[0056] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0057] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0059] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0060] Since the focal length of a vehicle-mounted telephoto module is generally greater than 10 meters, the calibration of the vehicle-mounted telephoto module needs to be carried out in a large-scale space, which will result in a large volume of the test equipment, low calibration efficiency and a long time consumption.

[0061] In order to solve the above problems, Figure 1 and Figure 2 As shown, this embodiment provides a performance test device for a camera module. In this embodiment, it is used to calibrate and detect a vehicle-mounted telephoto camera module. Of course, in other embodiments, it is not limited to calibrating and detecting a vehicle-mounted telephoto camera module, and can also be applied to the detection of other camera modules. The performance test device for the camera module includes a bracket assembly 1, a collimator 2, and a position adjustment platform 3. The collimator 2 is supported on the bracket assembly 1. In this embodiment, the collimator 2 is a 30-degree collimator; the position adjustment platform 3 is arranged below the collimator 2, and the camera module is installed on the position adjustment platform 3. The position adjustment platform 3 is used to adjust the position and tilt angle of the camera module, and the camera module is used to capture the image of the test chart in the collimator 2.

[0062] The performance testing device of the camera module installs the camera module on a position adjustment platform 3, and adjusts the position and tilt angle of the camera module through the position adjustment platform 3. The camera module is used to capture the image of the test chart in the collimator 2 to analyze the performance of the camera module. The collimator 2 is used to shorten the focal length of the camera module, which can greatly reduce the space required for the test, shorten the time of the calibration test, and improve the efficiency.

[0063] Optionally, the performance testing device of the camera module also includes a cover shell 4, and the bracket assembly 1, the collimator 2 and the position adjustment platform 3 are arranged in the cover shell 4. The cover shell 4 protects the bracket assembly 1, the collimator 2 and the position adjustment platform 3 to improve the detection accuracy of the camera module.

[0064] like Figure 3 As shown, the position adjustment platform 3 includes an X-axis slide 31, a Z-axis slide 32, an XY-axis tilt adjustment platform 33 and a fixture 34. The Z-axis slide 32 is arranged on the X-axis slide 31, and the X-axis slide 31 is used to adjust the position of the Z-axis slide 32 along the X-axis direction; the XY-axis tilt adjustment platform 33 is arranged on the Z-axis slide 32, and the Z-axis slide 32 is used to adjust the position of the XY-axis tilt adjustment platform 33 along the Z-axis direction; the fixture 34 is arranged on the XY-axis tilt adjustment platform 33, and the camera module is clamped on the fixture 34, and the XY-axis tilt adjustment platform 33 is used to adjust the tilt angle of the fixture 34 and the camera module along the X-axis or Y-axis direction. The above-mentioned position adjustment platform 3 can clamp the camera module and adjust the position and tilt angle, the structure is relatively simple, and the position adjustment is accurate.

[0065] Among them, the XY axis tilt adjustment platform 33 includes an X axis tilt adjustment slide 331 and a Y axis tilt adjustment slide 332. In this embodiment, the X axis tilt adjustment slide 331 is arranged on the Z axis slide 32, the Y axis tilt adjustment slide 332 is arranged on the X axis tilt adjustment slide 331, and the fixture 34 is arranged on the Y axis tilt adjustment slide 332. In other embodiments, the Y axis tilt adjustment slide 332 can also be arranged on the Z axis slide 32, and the X axis tilt adjustment slide 331 can be arranged on the Y axis tilt adjustment slide 332. In this embodiment, the X axis tilt adjustment slide 331 and the Y axis tilt adjustment slide 332 are arc angle adjustment structures, which belong to the existing structure and are not described in detail here.

[0066] Optionally, the performance test device of the camera module further includes a conveying device 35, the position adjustment platform 3 is arranged on the conveying device 35, and the conveying device 35 is used to drive the position adjustment platform 3 to move along the Y-axis direction to move between the loading position and the test position. The setting of the conveying device 35 enables the position adjustment platform 3 to move between the loading position and the test position, so as to facilitate the installation of the camera module at the loading position and the testing of the camera module at the test position.

[0067] like Figure 4 and Figure 5 As shown, the clamp 34 includes a clamping base 341 and a clamping cover 342. The clamping base 341 is arranged on the XY axis tilt adjustment platform 33, and the camera module is installed in the clamping base 341; one side of the clamping cover 342 is hinged to the clamping base 341, and the other side of the clamping cover 342 is connected to the clamping base 341 through a locking member 343, and the lens of the camera module extends from the clamping base 341 through the clamping cover 342. The clamp 34 can clamp and accommodate the camera module through the clamping base 341, and fix the position of the camera module through the clamping cover 342 to prevent the camera module from falling out.

[0068] Furthermore, one end of the locking member 343 is hinged to the clamping base 341, and the other end of the locking member 343 is provided with a hook 344, which can be hooked on the clamping cover 342. The locking member 343 has a simple structure and is convenient to lock and unlock.

[0069] like Figure 5 As shown, the clamp 34 further includes an elastic member 345, which is disposed on the clamping base 341. The elastic member 345 elastically abuts against an end of the locking member 343 where the hook 344 is not disposed, so as to push the locking member 343 to rotate, so that the hook 344 is hooked on the clamping cover 342. The provision of the elastic member 345 prevents the locking member 343 from being separated from the clamping cover 342, and the locking effect is better.

[0070] like Figure 6 and Figure 7As shown, the collimator 2 includes a housing 21 and a chart assembly 22. The housing 21 is supported on the bracket assembly 1, and a through hole is provided at the bottom of the housing 21. The chart assembly 22 is movably provided in the housing 21 along the Z-axis direction, and the chart assembly 22 is arranged opposite to the through hole. The chart assembly 22 is movably provided in the housing 21 along the Z-axis direction, so that the height position of the chart assembly 22 can be adjusted according to different test requirements, that is, the imaging distance of the actual object can be simulated by adjusting the position of the chart assembly 22, thereby completing the calibration of the vehicle-mounted telephoto camera module.

[0071] Optionally, in order to realize the movement of the image card assembly 22 along the Z-axis direction, the collimator 2 further includes a driving assembly, which is used to drive the image card assembly 22 to move along the Z-axis direction. The specific structure of the driving assembly is not specifically limited here, as long as the linear drive of the image card assembly 22 along the Z-axis direction can be realized.

[0072] In order to realize the installation and fixation of the collimator 2, as Figure 2 and Figure 8 As shown, the bracket assembly 1 is provided with a first mounting plate 11, and the first mounting plate 11 is provided with a first mounting hole; the collimator 2 is installed on the second mounting plate 12, and the second mounting plate 12 is connected to the first mounting plate 11, and the second mounting plate 12 is provided with a second mounting hole 121, and the second mounting hole 121 is arranged opposite to the first mounting hole, and the collimator 2 is inserted through the first mounting hole and the second mounting hole 121. The arrangement of the first mounting plate 11 and the second mounting plate 12 facilitates the installation of the collimator 2.

[0073] Furthermore, the first mounting plate 11 is provided with a plurality of first fixing holes 111 at intervals in the circumference of the first mounting hole; the second mounting plate 12 is provided with a plurality of second fixing holes 122 at intervals in the circumference of the second mounting hole 121, the first fixing holes 111 and the second fixing holes 122 are arranged opposite to each other, and the fixing members pass through the corresponding second fixing holes 122 and the first fixing holes 111 to connect the first mounting plate 11 and the second mounting plate 12. The above fixing method is firm and easy to assemble and disassemble.

[0074] In this embodiment, Figure 8 As shown, the second fixing hole 122 is an arc-shaped hole, so that the second mounting plate 12 can adjust the installation angle to meet the installation requirements and avoid the situation where it cannot correspond to the first fixing hole 111.

[0075] Optionally, the performance testing device of the camera module further includes a control device, and the camera display module, the position adjustment platform 3 and the driving assembly are electrically connected to the control device respectively, and the actions of each component are controlled by the control device.

[0076] Optionally, the performance testing device of the camera module further includes a display device 5 , which is electrically connected to the control device, and displays the image captured by the camera display module through the display device 5 .

[0077] When installing the collimator 2, first adjust the level of the second mounting plate 12, then adjust the collimator 2 under the first mounting plate 11 so that the crosshairs of the collimator 2 are aligned with the bracket assembly 1, and then fix it in this position; using the adjusted collimator 2 as a reference, the fixture 34 is adjusted together with the X-axis slide 31 and the conveying device 35, so that the center crosshairs of the camera module installed by the fixture 34 are aligned with the crosshairs of the collimator 2, and finally adjust the Z-axis slide 32 to move the camera module to the testing height of the collimator 2.

[0078] Test process: the fixture 34 is moved by the conveying device 35 to the loading position, the fixture 34 is opened to put in the camera module, and the clamping cover 342 is closed; then the fixture 34 equipped with the camera module is moved by the conveying device 35 to the test position (the camera module is moved to the bottom of the parallel light tube 2). During the test, the X-axis inclination adjustment slide 331 and the Y-axis inclination adjustment slide 332 will swing the fixture 34 equipped with the camera module to the corresponding inclination angle according to the software instructions to take the test picture card in the parallel light tube 2 for image analysis; after the test is completed, the fixture 34 equipped with the tested camera module is moved by the conveying device 35 to the loading position to unload.

[0079] The performance test device of the camera module realizes the combination of virtual and real through the collimator 2. By changing the position of the image card assembly 22 in the collimator 2, a farther or closer distance is simulated to complete the calibration of the vehicle-mounted telephoto module, which can greatly reduce the space required for the test, shorten the calibration test time, and improve efficiency.

[0080] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A performance test device for a camera module, characterized in that: include: Bracket assembly (1); A collimator (2), wherein the collimator (2) is supported on the support assembly (1); A position adjustment platform (3), the position adjustment platform (3) being arranged below the collimator (2), the camera module being mounted on the position adjustment platform (3), the position adjustment platform (3) being used to adjust the position and tilt angle of the camera module, the camera module being used to capture an image of a test chart in the collimator (2).

2. The performance testing device of the camera module according to claim 1, characterized in that: The position adjustment platform (3) comprises: X-axis slide (31); A Z-axis slide (32), wherein the Z-axis slide (32) is arranged on the X-axis slide (31), and the X-axis slide (31) is used to adjust the position of the Z-axis slide (32) along the X-axis direction; An XY-axis inclination adjustment platform (33), wherein the XY-axis inclination adjustment platform (33) is arranged on the Z-axis slide platform (32), and the Z-axis slide platform (32) is used to adjust the position of the XY-axis inclination adjustment platform (33) along the Z-axis direction; A clamp (34), wherein the clamp (34) is arranged on the XY axis tilt adjustment platform (33), the camera module is clamped on the clamp (34), and the XY axis tilt adjustment platform (33) is used to adjust the tilt angle of the clamp (34) and the camera module along the X axis or Y axis direction.

3. The performance testing device of the camera module according to claim 2, characterized in that: The clamp (34) comprises: A clamping base (341), wherein the clamping base (341) is disposed on the XY-axis tilt adjustment platform (33), and the camera module is installed in the clamping base (341); A clamping cover (342), one side of the clamping cover (342) is hinged to the clamping base (341), the other side of the clamping cover (342) is connected to the clamping base (341) via a locking piece (343), and the lens of the camera module extends from the clamping base (341) through the clamping cover (342).

4. The performance testing device of the camera module according to claim 3, characterized in that: One end of the locking member (343) is hinged to the clamping base (341), and the other end of the locking member (343) is provided with a hook (344), and the hook (344) can be hooked on the clamping cover plate (342).

5. The performance testing device of the camera module according to claim 4, characterized in that: The clamp (34) further comprises: An elastic member (345) is arranged on the clamping base (341), and the elastic member (345) elastically abuts against an end of the locking member (343) where the hook (344) is not arranged, so as to push the locking member (343) to rotate, so that the hook (344) is hooked on the clamping cover plate (342).

6. The performance testing device of the camera module according to any one of claims 2 to 5, characterized in that: The performance testing device of the camera module also includes: A conveying device (35), wherein the position adjustment platform (3) is arranged on the conveying device (35), and the conveying device (35) is used to drive the position adjustment platform (3) to move along the Y-axis direction so as to move between a loading position and a testing position.

7. The performance testing device of the camera module according to any one of claims 1 to 5, characterized in that: The collimator (2) comprises: A shell (21), the shell (21) being supported on the bracket assembly (1), and a through hole being provided at the bottom of the shell (21); A graphic card assembly (22), wherein the graphic card assembly (22) is arranged in the housing (21) so as to be movable along the Z-axis direction, and the graphic card assembly (22) is arranged opposite to the through hole.

8. The performance testing device for a camera module according to any one of claims 1 to 5, characterized in that: The bracket assembly (1) is provided with a first mounting plate (11), and the first mounting plate (11) is provided with a first mounting hole; The collimator (2) is mounted on a second mounting plate (12), the second mounting plate (12) is connected to the first mounting plate (11), a second mounting hole (121) is provided on the second mounting plate (12), the second mounting hole (121) is arranged opposite to the first mounting hole, and the collimator (2) is passed through the first mounting hole and the second mounting hole (121).

9. The performance testing device of the camera module according to claim 8, characterized in that: The first mounting plate (11) is provided with a plurality of first fixing holes (111) at intervals in the circumferential direction of the first mounting hole; The second mounting plate (12) is provided with a plurality of second fixing holes (122) at intervals in the circumferential direction of the second mounting hole (121); the first fixing hole (111) and the second fixing hole (122) are arranged opposite to each other; and a fixing member is passed through the corresponding second fixing hole (122) and the first fixing hole (111) to connect the first mounting plate (11) and the second mounting plate (12).

10. The performance testing device of the camera module according to claim 9, characterized in that: The second fixing hole (122) is an arc-shaped hole.

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