Dispersion test auxiliary mechanism of vehicle-mounted camera and dispersion test method

Abstract

The invention provides a dispersion test auxiliary mechanism, which is used for performing dispersion test on a camera device and comprises a base and a light source support, the base comprises a bottom surface and a top surface opposite to the bottom surface, and the bottom surface is connected with a holder so that the base is supported to a preset height by the holder. The light source support comprises an angle adjusting part, a mounting seat and a light source seat, the mounting seat is connected with the base, the angle adjusting part enables the light source seat to be arranged on the mounting seat in an angle-adjustable mode, the light source seat is used for fixing the light source, and light emitted by the light source is emitted out of the light source support. The light source changes the light emitting direction along with angle adjustment of the light source base.

Description

Technical Field

[0001] This application relates to the field of indirect vision device testing technology in the automotive industry, and in particular to an auxiliary mechanism and method for diffusion testing of vehicle-mounted cameras. Background Technology

[0002] In the field of performance testing for indirect vision devices in motor vehicles, the standard GB 15084-2022, "Performance and Installation Requirements for Indirect Vision Devices in Motor Vehicles," clearly stipulates that in the reproduction and diffusion of brightness contrast in sunset environments, the device under test (DUT) must form a 10° angle with the field of view axis of the camera corresponding to the simulated external light (sunset light). This angle design simulates the incident characteristics of light in a real sunset environment, ensuring that the imaging quality of indirect vision devices, such as camera monitor systems (CMS), meets safety standards in low-light, high-contrast scenes.

[0003] In existing technologies, this angle control is typically achieved using a machine testing system, as shown in the attached figure. Figure 1 As shown: the light source emits incident light, and the camera device is fixed on the left clamp. The position of the machine is adjusted so that the incident light forms a 10° angle with the field of view axis of the camera device. However, this type of machine testing solution has significant drawbacks: the mechanical structure adjustment relies on manual or stepper motor control, the angle error is easily affected by mechanical tolerances and assembly precision, making it difficult to consistently meet the ±0.5° angle accuracy requirement, resulting in poor repeatability of test results; dedicated testing machines are bulky and expensive, and require high-precision angular displacement sensors, spectral analyzers, and other equipment. Summary of the Invention

[0004] In view of this, it is necessary to propose an auxiliary mechanism and method for diffusion testing of vehicle-mounted cameras to achieve low-cost and high-precision diffusion testing.

[0005] On one hand, this application provides a diffusion testing auxiliary mechanism for performing diffusion tests on a camera device. The mechanism includes a base and a light source bracket. The base includes a bottom surface and a top surface opposite to the bottom surface. The bottom surface is connected to a gimbal, allowing the base to be supported by the gimbal to a preset height. The light source bracket includes an angle adjustment component, a mounting base, and a light source holder. The mounting base is connected to the base. The angle adjustment component allows the light source holder to be adjustablely positioned on the mounting base. The light source holder is used to fix the light source, and the light emitted by the light source exits the light source bracket. The light source changes its emission direction as the angle of the light source holder is adjusted.

[0006] Preferably, the mounting base is provided with a scale, which has several graduations for indicating the rotation angle of the angle adjustment component.

[0007] Preferably, the dial is arranged around the angle adjustment member, and the angle adjustment member is rotatably connected to the mounting base.

[0008] Preferably, the angle adjusting component is a screw, which includes a head and a rod portion perpendicularly connected to one end of the head; the rod portion is provided with external threads, and one side of the head is provided with an outwardly protruding pointing element, which points to the corresponding scale when the angle adjusting component rotates, so as to indicate the angle of the angle adjusting component.

[0009] Preferably, the plurality of scales are groove structures, and permanent magnets are disposed within a specific groove.

[0010] Preferably, the mounting base includes a bottom and two opposing sides extending upward from the bottom, the light source base is clamped between the two sides, and the rod of the angle adjustment member passes through one side and is locked to one side of the light source base. The light source base is provided with a light source hole that is adapted to the rod, and the center line of the light source hole is parallel to the two sides.

[0011] Preferably, the base is equipped with a level detector, the base is rectangular, and each side of the base is provided with a level detector, which is a bubble level.

[0012] Preferably, the light source bracket is further provided with a laser emitter, which is located directly below the light source, and the light emitted by the laser emitter has the same direction as the light emitted by the light source.

[0013] On the other hand, this application provides a method for performing a diffusion test on a camera device based on the aforementioned diffusion test auxiliary mechanism. The method includes placing the camera device horizontally on a test platform, which allows the camera device to be raised and lowered. The diffusion test auxiliary mechanism is mounted on a pan-tilt unit, with the light source of the auxiliary mechanism emitting towards the camera device. The distance between the pan-tilt unit and the camera device is a preset distance. The light source is controlled to emit test light. The camera device is adjusted so that its field-of-view axis is aligned with the center of the light source. The angle adjustment component is adjusted so that the center of the light source is offset by a preset angle relative to the field-of-view axis.

[0014] Preferably, before controlling the light source to emit light, the method for testing the diffusion of the camera device further includes controlling the laser emitter to emit calibration light and adjusting the camera device so that the field-of-view axis of the camera device is aligned with the center of the laser emitter.

[0015] The aforementioned diffusion test auxiliary mechanism and method dynamically adjust the orientation of the light source holder through an angle adjustment component, ensuring that the light source emission direction forms a precise angle with the camera's field of view axis, thereby improving the accuracy of the diffusion test. Furthermore, the aforementioned diffusion test auxiliary mechanism replaces a complex machine tool by simply combining a base and a light source support component, significantly reducing costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the machine test provided in this application.

[0018] Figure 2 This is a schematic diagram of the overall structure of the diffusion testing auxiliary mechanism provided in the embodiments of this application.

[0019] Figure 3 This is a schematic diagram of a diffusion test scenario provided in an embodiment of this application.

[0020] Figure 4 This is a schematic diagram of the base provided in an embodiment of this application.

[0021] Figure 5 A schematic diagram of the light source bracket provided in an embodiment of this application.

[0022] Figure 6 This is a schematic diagram of the mounting base provided in an embodiment of this application.

[0023] Figure 7 This is a schematic diagram of the light source holder provided in an embodiment of this application.

[0024] Figure 8 This is a cross-sectional schematic diagram of the light source holder provided in an embodiment of this application.

[0025] Figure 9 This is a schematic diagram of the angle adjustment component provided in an embodiment of this application.

[0026] Figure 10 This is a flowchart illustrating a method for testing the diffusion of a camera device, as provided in an embodiment of this application.

[0027] Figure 11 An external path diagram of the camera device provided in the embodiments of this application.

[0028] The following are the labels in the diagram: 100-Diffusion test auxiliary mechanism; 1-Base; 11-Top surface; 12-Bottom surface; 13-Side surface; 130-Groove; 14-Mounting hole; 15-Leveling instrument; 2-Light source bracket; 21-Mounting seat; 211-First side; 212-Second side; 2101-Scale; 2102-Connection hole; 213-Bottom; 2131-Laser emitter; 22-Light source seat; 221-Light source hole; 222-Housing; 23-Angle adjustment component; 231-Rod; 232-Head; 2321-Pointing element; 200-Camera device; 300-Gimbal; 400-Test platform; 500-Machinery; 600-Light source; 700-Host computer; 701-Display.

[0029] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "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 application 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 application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] To provide a clearer and more accurate understanding of the contents of this application, a detailed description will now be provided in conjunction with the accompanying drawings. The accompanying drawings illustrate examples of embodiments of this application, wherein the same reference numerals denote the same elements. It is to be understood that the scale shown in the accompanying drawings is not the actual scale of this application, and is for illustrative purposes only, and is not a drawing based on the original dimensions.

[0034] Please refer to Figure 2 and Figure 3 This application provides a diffusion testing auxiliary mechanism 100 for performing diffusion testing on a Device Under Test (DUT). In this embodiment, the DUT includes a camera device 200, such as a CMS. In this embodiment, the diffusion test of the DUT is a diffusion test performed on the camera device 200. Specifically, when performing a diffusion test on the camera device 200, firstly, a light source 600 is used to simulate external light (such as sunset light), and the angle between the light emitted by the light source 600 and the field of view axis of the camera device 200 is required to be 10°. Then, under such conditions, the camera device 200 acquires an image and performs an evaluation to determine whether the camera device 200 meets the requirements, that is, whether the camera device 200 is a good product or a defective product.

[0035] In this embodiment, the camera device 200 is placed on the test platform 400, and its field of view axis is horizontal. The test platform 400 can support the camera device 200 in positioning, raising and lowering, etc.

[0036] The dispersion testing auxiliary mechanism 100 includes a base 1 and a light source bracket 2 mounted on the base 1. The base 1 is mounted on a pan-tilt unit 300, which is a height-adjustable bracket, thus supporting the entire dispersion testing auxiliary mechanism 100. The pan-tilt unit 300 can be understood as a height-adjustable tripod or support frame. The light source bracket 2 is used to fix the light source 600. Simultaneously, the light source bracket 2 can adjust the angle of the light source 600 to a preset angle. This preset angle is set based on the angle between the light emitted by the light source 600 and the field of view axis of the camera device 200 during the dispersion test. Therefore, the light source bracket 2 can adjust the light emitted by the light source 600 to the required angle. How to precisely adjust the light source 600 to the preset angle will be explained in detail below.

[0037] Please refer to Figure 4The base 1 includes a top surface 11, a bottom surface 12 opposite to the top surface 11, and side surfaces 13 surrounding the top surface 11 and the bottom surface 12. In this embodiment, the base 1 is generally rectangular in shape, including four side surfaces 13 connected end to end, and the top surface 11 and the bottom surface 12 of the base 1 are horizontally arranged. The base 1 is also provided with mounting holes 14 and a level detector 15. The mounting holes 14 allow the base 1 to be connected to the testing gimbal 300. The level detector 15 is located on the side surface 13 and is used to detect whether the dispersion testing auxiliary mechanism 100 is horizontally placed on the gimbal 300.

[0038] Please refer to it again. Figure 4 In this embodiment, side 13 includes four interconnected sides 13a, 13b, 13c, and 13d. Each of the four sides 13a, 13b, 13c, and 13d is equipped with a level detector 15, facilitating user observation. Specifically, each side 13a, 13b, 13c, and 13d has a groove 130, and the level detector 15 is correspondingly embedded in the groove 130. In this embodiment, the level detector 15 is a level bubble level. Two level bubble levels 15 on the front and rear sides of the base 1 are used to detect whether the base 1 is level in the horizontal direction, and two level bubble levels 15 on the left and right sides are used to detect whether the base 1 is level in the front-back direction. When the bubbles in all four level bubble levels 15 are in the centered position, the dispersion test auxiliary mechanism 100 is placed horizontally and can be used to support the light source bracket 2. It is understood that the shape of the base 1 can be other shapes, and the position and number of level detectors 15 will change accordingly.

[0039] In this embodiment, the mounting hole 14 extends from the bottom surface 12 to the top surface 11 and is a 6mm diameter screw hole, adapted to the fixing screw (not shown) of the gimbal 300. In this embodiment, the mounting hole 14 can be a through hole or a blind hole. Understandably, the diameter of the mounting hole 14 can be adjusted according to the type of gimbal 300.

[0040] Please refer to it again. Figure 2 The light source bracket 2 includes a mounting base 21, a light source holder 22, and an angle adjustment component 23. The mounting base 21 is connected to the base 1, fixing the light source bracket 2 to the base 1. The angle adjustment component 23 is rotatably connected to the mounting base 21, allowing the light source holder 22 to be adjusted and fixed to the mounting base 21. The light source holder 22 can rotate with the angle adjustment component 23. The light source holder 22 is used to fix the light source 600. The light emitted by the light source 600 exits the light source bracket 2, and the emission direction of the light source 600 changes as the angle of the light source holder 22 is adjusted.

[0041] Please refer to Figure 5 and Figure 6The mounting base 21 is generally U-shaped and includes a bottom 213 and two opposing and spaced-apart first side portions 211 and second side portions 212 extending upward from the bottom 213. An angle adjustment member 23 passes through the first side portion 211 and is connected to the light source base 22.

[0042] The first side portion 211 is also provided with a scale 2101, which has several graduations to indicate the rotation angle of the angle adjustment component 23. When the user rotates the angle adjustment component 23, he / she can accurately know the specific rotation angle according to the graduations on the scale 2101. In this embodiment, the scale 2101 has several graduation lines to represent the corresponding graduations. The angle adjustment component 23 passes through the first side portion 211 of the mounting base 21 and the light source base 22 in sequence, and the light source base 22 is installed between the first side portion 211 and the second side portion 212.

[0043] Specifically, the first side portion 211 is provided with a connecting hole 2102 through the first side portion 211 at the end away from the bottom 213. The angle adjustment member 23 passes through the connecting hole 2102 to connect to the light source base 22 and locks to one side of the light source base 22.

[0044] In some other embodiments of this application, the scale lines on the dial 2101 are groove structures. Permanent magnets (not shown) are disposed within the grooves of some specific scale lines. Specific scale lines can be set according to testing needs, such as 0°, 10°, 15°, 30°, etc. The mounting base 21 and the angle adjustment component 23 are made of magnetically conductive metal materials, such as iron or low-carbon steel. When the angle adjustment component 23 is rotated to or near a specific scale line, the magnet's magnetism can automatically attract and position the angle adjustment component 23 onto the fixed scale line, generating a clear "sticking point feedback." Operators can quickly position the component by hand, eliminating the need for individual scale calibration, greatly improving adjustment efficiency, and avoiding errors caused by manual reading.

[0045] In some preferred embodiments, a laser emitter 2131 may also be disposed at the center of the bottom 213, so that the laser emitter 2131 faces the camera device 200. The laser emitter 2131 is located directly below the light source 600, and the laser emitter 2131 and the light source 600 are vertically aligned, with the light emitted by the laser emitter 2131 and the emission direction of the light source 600 both facing the camera device 200.

[0046] The laser emitter 2131 located at the bottom 213 allows for rapid calibration of the camera device 200, aligning it with the center of the light source 600. Specifically, the laser emitter 2131 emits calibration light, quickly aligning the field-of-view axis of the camera device 200 with the center of the laser emitter 2131. Since the laser emitter 2131 is located directly below the light source 600, subsequent adjustments to the height of the camera device 200 are sufficient to align its field-of-view axis with the center of the light source 600.

[0047] Please refer to Figure 7 and Figure 8 The light source holder 22 is generally cylindrical and includes a housing 222. A light source hole 221 is provided on the surface of the housing 222. The shape of the housing 222 is adapted to the shape of the light source 600 to accommodate and fix the light source 600. An angle adjustment member 23 extends from the first side portion 211 and locks into the light source hole 221, thereby mounting the light source holder 22 between the first side portion 211 and the second side portion 212 of the mounting base 21. In this embodiment, the centerline of the light source hole 221 is located between the first side portion 211 and the second side portion 212 and is parallel to the first side portion 211 and the second side portion 212. It is understood that in other embodiments of this application, the shape of the light source holder 22 can be other shapes, such as spherical, arc-shaped, etc.

[0048] A light source hole 221 is provided on the surface of the light source holder 22, so that the angle adjustment component 23 can be connected to the light source holder 22 through the light source hole 221. Thus, when the angle adjustment component 23 rotates, it can drive the light source holder 22 to rotate synchronously. Specifically, when it is necessary to adjust the angle of the light, it can be achieved by rotating the angle adjustment component 23 to the corresponding scale. The user can precisely adjust the angle of the light source holder 22 according to the scale of the scale 2101, thereby adjusting the angle of the light source 600, and thus adjusting the angle of the light emitted by the light source 600.

[0049] In this embodiment, the angle adjustment component 23 is a screw. Please refer to... Figure 9 The angle adjustment component 23 includes a rod 231 and a head 232 perpendicularly connected to one end of the rod 231. The rod 231 and the head 232 are integrally formed. The angle adjustment component 23 is locked to the light source hole 221 by the rod 232 passing through the connecting hole 2102. The head 232 is located outside the first side portion 211, allowing the user to rotate the angle adjustment component 23. The rod 231 has external threads, and its diameter is adapted to the diameters of the connecting hole 2102 and the light source hole 221. The head 232 is surrounded by a scale 2101 and has an outwardly protruding pointing element 2321. The pointing element 2321 is plate-shaped and parallel to the axis of the rod 231. When the angle adjustment component 23 rotates, the pointing element 2321 points to the corresponding scale mark to indicate the angle of the angle adjustment component 23.

[0050] In some other embodiments, a Hall sensor (not shown) may also be built into the angle adjustment member 23 to transmit angle signals and precisely control the angle of offset of the angle adjustment member 23.

[0051] The pointing element 2321 on the head 232 can be used in conjunction with the scale on the dial 2101 to accurately determine the rotation angle of the angle adjustment component 23, greatly reducing the difficulty of adjusting the light emitted by the light source 600 to an angle of 10° with the field of view axis of the camera device 200. Understandably, the angle adjustment component 23 can also be other connecting devices such as a pin that can control the angle adjustment of the light source base 22.

[0052] Please refer to Figure 1 , Figure 3 , Figure 10 and Figure 11 This application embodiment also provides a method 1000 for performing a camera device diffusion test based on the above-mentioned diffusion test auxiliary mechanism 100. The method 1000 for performing a camera device diffusion test specifically includes the following steps.

[0053] Step S1001: Place the camera device 200 horizontally on the test platform 400. The test platform 400 can raise and lower the camera device 200.

[0054] The camera device 200 is also communicatively connected to a host computer 700, which can be a computer, tablet computer, etc. The host computer 700 has a display 701. The images captured by the camera device 200 are synchronized to the host computer 700 and displayed on the display 701.

[0055] Step S1002: Install the diffusion test auxiliary mechanism 100 on the gimbal 300, and make the light emission direction of the diffusion test auxiliary mechanism 100 face the camera device 200. The distance between the gimbal 300 and the camera device 200 is a preset distance.

[0056] After placing the camera device 200 on the test platform 400, place the gimbal 300 directly in front of the camera device 200 at a preset distance of 72 cm. Connect the base 1 of the diffusion test auxiliary mechanism 100 to the gimbal 300, and confirm that the bubbles in the four horizontal bubble gauges 15 set on the side 13 of the base 1 are all centered. When the bubbles are all centered, place the light source bracket 2 on the top surface 11 of the base 1. In some other embodiments, the preset distance can be set to other suitable values.

[0057] Step S1003: Control the laser emitter 2131 to emit calibration light.

[0058] Turn on the laser emitter 2131 and emit calibration light toward the camera device 200.

[0059] Step S1004: Adjust the camera device 200 so that the field of view axis of the camera device 200 is aligned with the center of the laser emitter 2131.

[0060] Specifically, after installation, the laser emitter 2131 is turned on, and the height and direction of the camera device 200 are adjusted so that the center of the laser emitter 2131 is aligned with the field of view axis of the camera device 200. At this time, the light spot of the calibration light will hit the lens of the camera, and the area of ​​the light spot image of the laser emitter 2131 on the display 701 will be the largest.

[0061] Step S1005: Control the light source 600 to emit test light.

[0062] After adjusting the direction and height of the camera device 200 using the laser emitter 2131, turn off the laser emitter 2131, and then turn on the light source 600 to emit test light towards the camera device 200.

[0063] Step S1006: Adjust the camera device 200 so that the field of view axis of the camera device 200 is aligned with the center of the light source.

[0064] Raise the height of the camera device 200 so that the field of view axis of the camera device 200 is aligned with the center of the light source 600.

[0065] Step S1007: Adjust the angle adjustment component 23 so that the center of the light source is offset by a preset angle relative to the field of view axis of the camera device 200.

[0066] In this embodiment, the preset angle that the light source 600 needs to be offset is 10°. After aligning the positions of the light source 600 and the camera device 200, the pointing element 2321 on the head 232 of the dispersion test auxiliary mechanism 100 points to the 0 mark on the scale 2101 on the first side 211, and the angle adjustment member 23 is rotated upward to make the pointing element 2321 point to the 10 mark.

[0067] Understandably, during the adjustment of the angle adjustment component 23, the light source 600 may or may not emit test light.

[0068] Step S1008: Adjust the parameters of the light source 600.

[0069] After the center of the light source is offset from the field of view axis of the camera device 200 by a preset angle, the light source 600 adjusts the color temperature, brightness and other parameters of the light source according to the size of the adjusted angle.

[0070] In this embodiment, the light source 600 adjusts parameters such as color temperature and brightness according to the offset angle. When the angle adjustment component 23 causes the light source 600 to offset by a preset angle of 10°, the Hall sensor built into the angle adjustment component 23 transmits the angle signal to the host computer 700. The host computer 700 processes the angle signal information based on the pre-set angle-light source adjustment table and outputs a light source adjustment command. The light source 600 adjusts the color temperature to 2500K and the brightness to 1000lx according to the light source adjustment command.

[0071] In some other embodiments of this application, the offset preset angle information can also be obtained by the camera device 200. After obtaining the corresponding angle information through image processing technology, the host computer 700 processes the angle signal information based on the pre-set angle-light source adjustment table and outputs the light source adjustment command. The light source 600 adjusts the parameters according to the light source adjustment command.

[0072] In some other embodiments of this application, after the position of the light source 600 and the camera device 200 are aligned, the scale of the pointer element 2321 pointing to the scale 2101 may not be the 0 scale but other scales. At this time, the angle adjustment member 23 is rotated in a preset direction until the pointer element 2321 points to the corresponding scale.

[0073] Method 1000 for the diffusion test of camera devices prepares the groundwork for the diffusion test and ensures that the data obtained from the test is accurate.

[0074] In the above embodiments, the dispersion testing auxiliary mechanism uses an angle adjustment component with a pointing element to point to the scale on the mounting base, visually displaying the tilt angle of the light source mount. This significantly reduces the operational difficulty of achieving a 10° angle between the incident light and the field of view axis of the camera device. Furthermore, a laser emitter is additionally provided to calibrate the light emission direction of the light source. While meeting the requirements of the dispersion testing environment, the dispersion testing auxiliary mechanism also saves on testing costs with its simplified structure.

[0075] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

[0076] The above-listed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A diffusion testing auxiliary mechanism for performing diffusion tests on a camera device, characterized in that, The diffusion test auxiliary mechanism includes: A base, comprising a bottom surface and a top surface opposite to the bottom surface, wherein the bottom surface is connected to a gimbal so that the base is supported by the gimbal to a preset height; A light source bracket includes an angle adjustment component, a mounting base, and a light source holder. The mounting base is connected to the base, and the angle adjustment component adjustably fixes the light source holder to the mounting base. The light source holder is used to fix the light source, and the light emitted by the light source exits the light source bracket. The light source changes its emission direction as the angle of the light source holder is adjusted.

2. The diffusion testing auxiliary mechanism as described in claim 1, characterized in that, The mounting base is provided with a dial, which has several graduations to indicate the rotation angle of the angle adjustment component.

3. The dispersion testing auxiliary mechanism as described in claim 2, characterized in that, The dial is arranged around the angle adjustment member, and the angle adjustment member is rotatably connected to the mounting base.

4. The diffusion testing auxiliary mechanism as described in claim 3, characterized in that, The angle adjustment component is a screw, which includes a head and a rod that is perpendicularly connected to one end of the head. The rod has an external thread, and one side of the head has an outwardly protruding pointing element. When the angle adjustment component rotates, the pointing element points to the corresponding scale to indicate the angle of the angle adjustment component.

5. The dispersion testing auxiliary mechanism as described in claim 2, characterized in that, The scales are groove structures, and permanent magnets are arranged in specific grooves.

6. The dispersion testing auxiliary mechanism as described in claim 4, characterized in that, The mounting base includes a bottom and two opposing sides extending upward from the bottom. The light source base is clamped between the two sides, and the rod of the angle adjustment member passes through one side and is locked to one side of the light source base. The light source base has a light source hole that is adapted to the rod, and the center line of the light source hole is parallel to the two sides.

7. The diffusion testing auxiliary mechanism as described in claim 1, characterized in that, The base is equipped with a level detector. The base is a three-dimensional rectangular shape, and each side of the base is equipped with a level detector, which is a bubble level.

8. The diffusion testing auxiliary mechanism as described in claim 6, characterized in that, The bottom is also equipped with a laser emitter, which is located directly below the light source, and the light emitted by the laser emitter is in the same direction as the light emitted by the light source.

9. A method for performing diffusion testing on a camera device based on the diffusion testing auxiliary mechanism according to any one of claims 1-8, characterized in that, The method for testing the diffusion of the camera device includes: The camera device is placed horizontally on the test platform, which allows the camera device to be raised and lowered. The dispersion test auxiliary mechanism is mounted on the gimbal, and the light source emission direction of the dispersion test auxiliary mechanism is directed towards the camera device. The distance between the gimbal and the camera device is a preset distance. Control the light source to emit test light; Adjust the camera device so that the field-of-view axis of the camera device is aligned with the center of the light source; Adjust the angle adjustment component to offset the center of the light source relative to the field of view axis by a preset angle; Adjust the parameters of the light source.

10. The method for diffusion testing of a camera device as described in claim 9, characterized in that, Before controlling the light source to emit test light, the method for performing a diffusion test on the camera device further includes: Control the laser emitter to emit calibration light; and Adjust the camera device so that the field-of-view axis of the camera device is aligned with the center of the laser emitter.

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