Panoramic camera module test equipment

Abstract

The utility model relates to the technical field of camera module testing, in particular to panoramic camera module testing equipment. The panoramic camera module testing equipment comprises a bottom plate, a rotating assembly, a bearing seat, a module jig base and a module fixing jig, the rotating assembly is installed on the bottom plate and can rotate relative to the bottom plate in the first direction. The bearing seat is fixedly mounted on the rotating assembly; the module jig base is fixedly mounted on the bearing seat; the module fixing jig is installed on the module jig base and can rotate around a second direction relative to the module jig base, and the module fixing jig is used for placing a panoramic camera module to be tested; wherein the first direction is perpendicular to the surface of the bottom plate, and the second direction is perpendicular to the first direction. The module fixing jig for placing the to-be-tested panoramic camera module can rotate around the second direction and the first direction through the module jig base and the rotating assembly, it is ensured that all view field angles of the to-be-tested panoramic camera module can be subjected to analytical testing, the testing range is widened, and the full view field angle testing requirement of the to-be-tested panoramic camera module is met.

Description

Technical Field

[0001] This utility model relates to the field of camera module testing technology, specifically to a panoramic camera module testing device. Background Technology

[0002] With the improvement of people's living standards and the booming development of the leisure tourism industry, consumer panoramic camera modules are becoming increasingly popular. People also have higher requirements for the performance of panoramic camera modules, and resolution, as one of the most important indicators, is something that module suppliers must guarantee.

[0003] However, the resolution of traditional small-angle, small-distortion camera modules is tested by shooting ISO12233 charts. This method has significant limitations and is not suitable for panoramic camera modules with large distortion, large angles, and long distances. To achieve long-distance resolution testing of panoramic camera modules, the main technical challenges to be addressed are: (1) The field of view of panoramic camera modules reaches 180-220°. The traditional planar chart test cannot cover the imaging surface. Even if the chart is large enough or the distance is close enough, it is impossible to shoot the resolution of the edge field of view; (2) Since most panoramic camera modules are used outdoors, it is necessary to ensure resolution testing at long distances such as 10 meters and above. The size of traditional charts is limited by the test space, printing equipment, etc., and cannot be infinitely enlarged according to the required distance.

[0004] Therefore, there is an urgent need for a solution suitable for long-distance analytical testing of panoramic camera modules. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art. This utility model provides a panoramic camera module testing device, including: a base plate, a rotating component, a support base, a module fixture base, and a module fixing fixture; the rotating component is mounted on the base plate and can rotate relative to the base plate about a first direction; the support base is fixedly mounted on the rotating component; the module fixture base is fixedly mounted on the support base; the module fixing fixture is mounted on the module fixture base and can rotate relative to the module fixture base about a second direction, and the module fixing fixture is used to place the panoramic camera module to be tested; wherein, the first direction is perpendicular to the surface of the base plate, and the second direction is perpendicular to the first direction.

[0006] According to one embodiment of this application, the rotating assembly includes a rotating frame and a bearing. The rotating frame is mounted on the bearing and can rotate around the first direction via the bearing. The bearing seat is fixedly mounted on the rotating frame, and the bearing is mounted on the base plate.

[0007] According to one embodiment of this application, the rotating assembly further includes a bearing base, which is fixed to the base plate by screws, and a receiving groove is provided in the middle of the bearing base, and the bearing is disposed in the receiving groove.

[0008] According to one embodiment of this application, a plurality of positioning grooves are provided on the outer side wall of the bearing base, and the positioning grooves are evenly distributed on the outer side wall around the first direction.

[0009] According to one embodiment of this application, the number of positioning slots is four.

[0010] According to one embodiment of this application, the panoramic camera module testing equipment further includes a positioning bracket and a positioning pin. The positioning pin is mounted on the base plate via the positioning bracket, and the positioning pin is positioned toward the positioning groove.

[0011] According to one embodiment of this application, the panoramic camera module testing equipment further includes a test box mounting plate, which is fixedly connected to the support base and is used to place the test box.

[0012] According to one embodiment of this application, the module fixture base has a U-shaped structure, and the module fixing fixture is rotatably connected to the module fixture base by bolts.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The module fixing fixture for placing the panoramic camera module under test can be rotated around the second direction and the first direction through the module fixture base and the rotating component, ensuring that all field angles of view of the panoramic camera module under test can be analyzed, improving the test range and meeting the full field angle test requirements of the panoramic camera module under test. (2) The bearing rotation scheme is adopted to improve the stability of the bearing seat rotating around the first direction and avoid eccentricity when the bearing seat rotates, thereby affecting the test accuracy of the panoramic camera module under test. (3) The bearing is set in the receiving groove of the bearing base to ensure the installation and fixation of the bearing. The bearing base is fixed to the base plate with screws to further determine the fixed position of the bearing relative to the base plate, thereby ensuring that the bearing drives the panoramic camera module under test to rotate stably around the first direction. (4) The setting of the positioning groove makes it easy to judge how much the rotating frame has rotated relative to the bearing base in the first direction, thereby judging how much the edge field of view of the panoramic camera module under test has been tested. That is, the positioning groove provides a basis for judging the rotation angle of the rotating frame. Attached Figure Description

[0014] Figure 1 A schematic diagram of the panoramic camera module testing equipment provided by this utility model;

[0015] Figure 2 for Figure 1A cross-sectional view of the panoramic camera module test equipment along line AA. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0017] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Please see Figures 1-2 As shown in this specific embodiment, a panoramic camera module testing device includes: a base plate 10, a rotating component 20, a support base 30, a module fixture base 40, and a module fixing fixture 50; the rotating component 20 is mounted on the base plate 10 and can rotate relative to the base plate 10 around a first direction; the support base 30 is fixedly mounted on the rotating component 20; the module fixture base 40 is fixedly mounted on the support base 30; the module fixing fixture 50 is mounted on the module fixture base 40 and can rotate relative to the module fixture base 40 around a second direction, and the module fixing fixture 50 is used to place the panoramic camera module to be tested. The first direction is perpendicular to the surface of the base plate 10, and the second direction is perpendicular to the first direction. For ease of understanding of this application, as shown... Figure 1 and Figure 2As shown, the first direction is the X direction in the figure, and the second direction is the Y direction in the figure. The module fixing fixture 50, which holds the panoramic camera module under test, can rotate around the second and first directions through the module fixture base 40 and the rotating component 20, ensuring that all field of view angles of the panoramic camera module under test can be analyzed, improving the test range and meeting the full field of view test requirements of the panoramic camera module under test.

[0020] The rotating component 20 is mounted on the base plate 10 and can rotate relative to the base plate 10 in a first direction. That is, the rotating component 20 can rotate around the base plate 10 as a whole, or the rotating component 20 can rotate around the base plate 10 in part. It is only necessary to satisfy that the rotating component 20 can drive the module fixing fixture 50 used to place the panoramic camera module under test to rotate relative to the base plate 10.

[0021] To facilitate understanding of this application, the usage scheme of the panoramic camera module testing equipment and the resolution testing requirements of the panoramic camera module under test are explained. The panoramic camera module under test has a large field of view and a wide shooting range. In addition to testing the resolution of its center field of view, it is also necessary to test the resolution of its edge field of view. To ensure that the resolution of each field of view of the panoramic camera module under test can be tested simultaneously, and since existing test charts or test conditions cannot meet the requirement of simultaneously testing the resolution of each field of view of the panoramic camera module under test, the test field of view of the panoramic camera module under test is split into a center field of view and an edge field of view. First, the panoramic camera module under test is mounted on the module fixing fixture 50, and the module fixing fixture 50 is rotated around a second direction so that the panoramic camera module under test faces the test chart, that is, the optical axis of the panoramic camera module under test faces the test chart. The panoramic camera module under test illuminates and captures images of the test chart. The acquired images are analyzed, thus realizing the resolution test of the center field of view of the panoramic camera module under test. Secondly, the panoramic camera module under test is returned to its initial state via the second direction, i.e., the optical axis of the panoramic camera module under test is parallel to the first direction. In this state, the optical axis of the panoramic camera module under test is not facing the test chart. The panoramic camera module under test is then illuminated and the test chart is captured. After capturing the image, the panoramic camera module under test is rotated around the first direction by a certain angle and the test chart is illuminated and captured again. This process is repeated multiple times until all edge fields of view of the panoramic camera module under test have been captured. The multiple images are analyzed to achieve the resolution test of the edge fields of view of the panoramic camera module under test. Finally, the resolution test results of the center field of view and the edge field of view are combined to complete the resolution test of the entire field of view of the panoramic camera module under test. It can be understood that the module fixing fixture 50, which holds the panoramic camera module under test, can be rotatably mounted on the module fixture base 40 via the second direction to ensure the resolution test of the center field of view of the panoramic camera module under test. The module fixture base 40 is rotatably mounted on the support 30 and the rotating component 20 in a first direction to ensure the resolution test of the entire edge field of view of the panoramic camera module under test.

[0022] According to one embodiment of this application, the rotating assembly 20 includes a rotating frame 21 and a bearing 22. The rotating frame 21 is mounted on the bearing 22 and can rotate around a first direction via the bearing 22. The bearing seat 30 is fixedly mounted on the rotating frame 21, and the bearing 22 is mounted on the base plate 10. It should be noted that the bearing 22 generally consists of four parts: an inner ring, an outer ring, rolling elements, and a cage. The rolling elements are disposed between the inner and outer rings via the cage, facilitating rotation of the inner ring relative to the outer ring. Connecting the bearing seat 30 to the bearing 22 via the rotating frame 21 ensures the stability of the connection. Furthermore, the bearing 22 rotation scheme improves the stability of the bearing seat 30's rotation around the first direction, preventing eccentricity during rotation and thus affecting the testing accuracy of the panoramic camera module under test. It should be noted that the rotation method of the bearing 22 is only one implementation of the rotating assembly 20 of this application; any rotating assembly 20 capable of rotating around the first direction falls within the protection scope of this application. For example, in one embodiment... The rotating frame 21 has a cylindrical structure, and the base plate 10 has a groove for accommodating the rotating frame 21. The rotating frame 21 can be rotatably disposed in the groove around a first direction. In another embodiment, the bottom of the rotating frame 21 is shaped like a ball, and the base plate 10 has a ball groove for accommodating the rotating frame 21. The rotating frame 21 can be rotatably disposed in the ball groove around a first direction.

[0023] According to one embodiment of this application, please refer again to Figure 2 As shown, the rotating assembly 20 also includes a bearing base 23, which is fixed to the base plate 10 with screws. A receiving groove 231 is provided in the middle of the bearing base 23, and the bearing 22 is disposed within the receiving groove 231. It should be noted that the number of bearings 22 can be one or more. Using multiple bearings 22 ensures the stability of the rotating frame 21 connection. Placing the bearing 22 within the receiving groove 231 of the bearing base 23 ensures the fixed installation of the bearing 22. Furthermore, fixing the bearing base 23 to the base plate 10 with screws further ensures the fixed position of the bearing 22 relative to the base plate 10, thereby ensuring that the bearing 22 drives the panoramic camera module under test to rotate stably around the first direction.

[0024] According to one embodiment of this application, a plurality of positioning grooves 211 are provided on the outer side wall of the rotating frame 21, and the positioning grooves 211 are evenly distributed on the outer side wall around a first direction. The positioning grooves 211 facilitate the determination of how much the rotating frame 21 has rotated relative to the bearing base 23 in the first direction, and thus determine how much of the edge field of view of the panoramic camera module under test has been tested. That is, the positioning grooves 211 provide a basis for judging the rotation angle of the rotating frame 21. It should be noted that the positioning grooves 211 are evenly distributed on the outer side wall around the first direction, that is, the positioning grooves 211 are all distributed at 360° positions of the rotating frame 21, so that the rotation angle of the rotating frame 21 in the first direction is evenly subdivided, thereby ensuring that the resolution of the edge field of view of the panoramic camera module under test is fully tested.

[0025] According to one embodiment of this application, the number of positioning slots 211 is four. That is, the adjacent positioning slots 211 rotate by 90° around the first direction. In this way, only four tests are needed to test the edge field of view of the panoramic camera module under test to complete the resolution test of the entire edge field of view of the panoramic camera module under test.

[0026] According to one embodiment of this application, the panoramic camera module testing equipment further includes a positioning bracket 60 and a positioning pin 70. The positioning pin 70 is mounted on the base plate 10 via the positioning bracket 60, and the positioning pin 70 is positioned towards the positioning groove 211. By adding the positioning pin 70, the tester can accurately determine the rotation angle of the panoramic camera module under test in the first direction, thereby ensuring that the entire edge field of view of the panoramic camera module under test is tested.

[0027] According to one embodiment of this application, the panoramic camera module testing equipment further includes a test box mounting plate 80, which is fixedly connected to the support base 30 and is used to hold the test box. The test box is used to connect with the panoramic camera module under test, serving to illuminate the panoramic camera module under test. The test box follows the panoramic camera module under test, rotating around the support base 30 in a first direction, thus avoiding the influence of the connection structure on the panoramic camera module under test during testing at various edge fields of view, avoiding frequent adjustments to the connection method between the test box and the panoramic camera module under test during the testing process, and improving testing efficiency.

[0028] According to one embodiment of this application, the module fixture base 40 has a U-shaped structure, and the module fixing fixture 50 is rotatably connected to the module fixture base 40 by bolts 90. The U-shaped structure of the module fixture base 40 avoids interference to the module fixing fixture 50 during rotation and facilitates the rotation of the module fixing fixture 50 relative to the module fixture base 40.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A panoramic camera module testing device, characterized in that, include: Base plate (10), rotating component (20), bearing seat (30), module fixture base (40) and module fixing fixture (50); The rotating component (20) is mounted on the base plate (10) and can rotate relative to the base plate (10) about a first direction; The support base (30) is fixedly installed on the rotating assembly (20); The module fixture base (40) is fixedly installed on the bearing seat (30); The module fixing fixture (50) is mounted on the module fixture base (40) and can rotate relative to the module fixture base (40) around the second direction. The module fixing fixture (50) is used to place the panoramic camera module to be tested. The first direction is perpendicular to the surface of the base plate (10), and the second direction is perpendicular to the first direction.

2. The panoramic camera module testing equipment according to claim 1, characterized in that, The rotating assembly (20) includes a rotating frame (21) and a bearing (22). The rotating frame (21) is mounted on the bearing (22) and can rotate around the first direction via the bearing (22). The bearing seat (30) is fixedly mounted on the rotating frame (21), and the bearing (22) is mounted on the base plate (10).

3. The panoramic camera module testing equipment according to claim 2, characterized in that, The rotating assembly (20) also includes a bearing base (23), which is fixed to the base plate (10) by screws, and a receiving groove (231) is provided in the middle of the bearing base (23), and the bearing (22) is disposed in the receiving groove (231).

4. The panoramic camera module testing equipment according to claim 3, characterized in that, The outer side wall of the rotating frame (21) is provided with a plurality of positioning grooves (211), and the positioning grooves (211) are evenly distributed on the outer side wall around the first direction.

5. The panoramic camera module testing equipment according to claim 4, characterized in that, The number of positioning slots (211) is 4.

6. The panoramic camera module testing equipment according to claim 4, characterized in that, The panoramic camera module testing equipment also includes a positioning bracket (60) and a positioning pin (70). The positioning pin (70) is mounted on the base plate (10) through the positioning bracket (60), and the positioning pin (70) is positioned towards the positioning groove (211).

7. The panoramic camera module testing equipment according to claim 1, characterized in that, The panoramic camera module testing equipment also includes a test box mounting plate (80), which is fixedly connected to the support base (30) and is used to place the test box.

8. The panoramic camera module testing equipment according to claim 1, characterized in that, The module fixture base (40) has a U-shaped structure, and the module fixing fixture (50) is rotatably connected to the module fixture base (40) by bolts (90).

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