Photosensitive testing device and detection equipment

Abstract

The present disclosure relates to the technical field of detection, and particularly relates to a photosensitive test device and a detection equipment. The photosensitive test device provided by the present disclosure is used for testing a photosensitive unit of a to-be-tested piece, and comprises a light-shield box, a test tool and a test machine. The light-shield box is internally provided with a light source and a clamping assembly, the clamping assembly is used for clamping the to-be-tested piece, the test tool is arranged in the light-shield box, the test tool is installed with a test piece, the test tool is detachably installed on the to-be-tested piece, in the case that the test tool is installed on the to-be-tested piece and located on the light path of the light source, the first sensing surface of the photosensitive unit and the second sensing surface of the test piece are both oriented to the light path direction of the light source, so that the first sensing surface and the second sensing surface synchronously receive the unified light path irradiation of the light source; the test is connected with the test piece, so as to detect whether the performance of the photosensitive unit of the to-be-tested piece meets the standard. During the test, the test tool is installed on the to-be-tested piece, and after the test is completed, the test tool is detached, and different test pieces can be tested.

Description

Technical Field

[0001] This disclosure relates to the field of testing technology, and in particular to a photosensitive testing device and testing equipment. Background Technology

[0002] With the rapid pace of technological iteration and the continuous improvement of people's quality of life, various display devices such as mobile phones, laptops, and smart TVs have become deeply integrated into daily life and production, becoming indispensable interactive terminals. To optimize the user's visual experience, the display panels of current mainstream display devices generally integrate light sensing functions. The core of this is to capture changes in the intensity of ambient light in real time through built-in light sensors (such as ambient light sensors), and then the control system automatically adjusts the brightness and color temperature of the display panel. This avoids visual fatigue caused by an overly dark screen under strong light and prevents eye stimulation caused by an overly bright screen under weak light, fundamentally improving the comfort and adaptability of device use.

[0003] To ensure the quality of display panels, testing the photosensitive components of the display panels is an essential step, hence the urgent need to develop a testing device for the photosensitive components of display panels. Summary of the Invention

[0004] This disclosure provides a photosensitive testing device and detection equipment to at least solve the above-mentioned technical problems existing in the prior art.

[0005] The first aspect of this disclosure provides a photosensitive testing apparatus for testing the photosensitive unit of a device under test, comprising: A light-shielding box, wherein a light source and a clamping assembly are provided inside the light-shielding box, and the clamping assembly is used to clamp the part to be tested; The test fixture is set inside the light-shielding box. The test fixture is equipped with a test piece. The test fixture is detachably installed on the test piece. When the test fixture is installed on the test piece and located in the light path of the light source, the first sensing surface of the photosensitive unit and the second sensing surface of the test piece are both facing the light path direction of the light source, so that the first sensing surface and the second sensing surface (61) synchronously receive the unified light path illumination of the light source. A testing machine is connected to the test piece to detect whether the performance of the photosensitive unit of the test piece meets the standard.

[0006] Furthermore, the testing fixture includes a reflector located in the optical path between the light source and the test piece and the workpiece under test. The reflector is used to change the propagation direction of the light emitted by the light source so that the light enters the first sensing surface of the photosensitive unit and the second sensing surface of the test piece perpendicularly, so that the first sensing surface and the second sensing surface synchronously receive the unified optical path illumination of the light source.

[0007] Furthermore, the test fixture includes a base and a first support and a second support located on both sides of the base; The test piece is disposed on the base; The reflector is mounted on the first support.

[0008] Furthermore, the light-shielding box includes a base plate; The clamping assembly includes a first clamping plate, a second clamping plate, and a torsion spring; The first clamping plate is disposed on the base plate, and the first clamping plate is provided with a rotating shaft. The second clamping plate is rotatably connected to the rotating shaft, and the torsion spring is sleeved on the rotating shaft. The torsion spring includes a first leg and a second leg, the first leg abutting against the first clamping plate, and the second leg abutting against the second clamping plate.

[0009] Furthermore, the light-shielding box includes a top plate, and the light source is disposed on the top plate; The first clamping plate is perpendicular to the base plate; The reflective surface of the mirror forms a 45° angle with the first clamping plate.

[0010] Furthermore, the first support is provided with a clearance hole for avoiding the photosensitive unit.

[0011] Furthermore, the test fixture also includes an adjusting member, at least a portion of which is disposed between the first support and the second support; The adjusting component is provided with an adjusting post, the second support is provided with an adjusting hole, the adjusting post passes through the adjusting hole, and a nut is provided at the end of the adjusting post away from the adjusting component, the nut being threadedly engaged with the adjusting post; The adjusting column is fitted with a spring, and the two ends of the spring abut against the adjusting column and the second support, respectively.

[0012] Furthermore, the first sensing surface of the photosensitive unit and the second sensing surface of the test piece are located on the same plane, so that the first sensing surface and the second sensing surface receive the same light intensity.

[0013] Furthermore, the testing machine includes a data acquisition module and a data analysis module; The data acquisition module is used to acquire the sensing data of the test piece and the sensing data of the photosensitive unit; The data analysis module is used to calculate the deviation value of the sensing data between the photosensitive unit and the test piece based on the sensing data collected by the data acquisition module, so as to determine whether the performance of the photosensitive unit of the test piece meets the standard.

[0014] The second aspect of this disclosure provides a testing device, including the photosensitive testing apparatus described in the first aspect.

[0015] The technical solution provided in this disclosure has the following advantages compared with the prior art: The photosensitive testing device provided in this embodiment includes a light-shielding box, a testing fixture, and a testing machine. The light-shielding box contains a light source and a clamping assembly. The clamping assembly holds the test piece (DPT) to maintain its relatively fixed position, making it suitable for different DPTs. The testing fixture is detachably mounted on the DPT. During testing, the testing fixture is mounted on the DPT; after testing, it is detached to test different DPTs. When the testing fixture is mounted on the DPT and located in the optical path of the light source, the first sensing surface of the photosensitive unit and the second sensing surface of the DPT both face the optical path of the light source. This ensures that the first and second sensing surfaces synchronously receive the same optical path from the light source, allowing light to cover both sensing surfaces at the same angle and intensity. This reduces test data deviation caused by different amounts of light received, ensuring consistent comparison benchmarks between the photosensitive unit and the DPT. The testing machine is connected to the DPT and can synchronously acquire benchmark data of the DPT in real time, eliminating the need for manual reading of the DPT data and comparison with the photosensitive unit data. During testing, the light-shielding box door is closed to ensure no external stray light enters, and the testing machine is started. After receiving light from the light source, the test piece transmits data such as light intensity and color temperature to the testing machine in real time; after receiving the same light, the photosensitive unit of the test piece transmits the sensed data to the testing machine. The testing machine processes the collected data, which can improve testing efficiency.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0017] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0018] Figure 1 A schematic diagram of the structure of the photosensitive testing device provided in the embodiments of this disclosure is shown; Figure 2 The diagram shows a schematic of the structure of the photosensitive testing device provided in this embodiment of the present disclosure after removing the light-shielding box; Figure 3 The diagram shows a schematic of the structure of the photosensitive testing device provided in this embodiment of the present disclosure after removing the light-shielding box and the light source; Figure 4A partial structural schematic diagram of the photosensitive testing device provided in an embodiment of this disclosure is shown; Figure 5 This illustration shows another partial structural diagram of the photosensitizing testing apparatus provided in an embodiment of the present disclosure; Figure 6 This diagram illustrates the structural process of the photosensitive testing device provided in this embodiment. Figure 1 ; Figure 7 This diagram illustrates the structural process of the photosensitive testing device provided in this embodiment. Figure 2 ; Figure 8 This diagram illustrates the structural process of the photosensitive testing device provided in this embodiment. Figure 3 ; Figure 9 This diagram illustrates the structural process of the photosensitive testing device provided in this embodiment. Figure 4 ; Figure 10 This diagram illustrates the structural process of the photosensitive testing device provided in this embodiment. Figure 5 .

[0019] The following are the labels in the diagram: 1. Light-shielding box; 11. Base plate; 12. Top plate; 2. Light source; 3. Clamping assembly; 31. First clamping plate; 311. Rotating shaft; 32. Second clamping plate; 33. Torsion spring; 331. First support leg; 332. Second support leg; 4. Test piece; 41. Photosensitive unit; 411. First sensing surface; 5. Test fixture; 50. Base; 51. First support; 511. Clearance hole; 52. Second support; 53. Reflector; 531. Reflecting surface; 54. Adjusting component; 55. Adjusting column; 56. Nut; 57. Spring; 6. Test piece; 61. Second sensing surface; 7. Test machine. Detailed Implementation

[0020] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure 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 this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0021] Combination Figure 1 , Figure 2 and Figure 3As shown, this embodiment of the present disclosure provides a photosensitive testing device for testing the photosensitive unit 41 of a device under test (DUT) 4. The photosensitive testing device includes a light-shielding box 1, a testing fixture 5, and a testing machine 7. The light-shielding box 1 can isolate ambient light. A light source 2 and a clamping assembly 3 are provided inside the light-shielding box 1. The clamping assembly 3 is used to clamp the DUT 4, making the position of the DUT 4 relatively fixed, and can be applied to different DUTs 4. The DUT 4 can be a display device, a wearable device, or a home display and interactive device, etc. The testing fixture 5 is disposed inside the light-shielding box 1, and a test piece 6 is mounted on the testing fixture 5. The test piece 6 can be an illuminance meter or a reference photosensitive sensor, etc.

[0022] The test fixture 5 is detachably mounted on the test piece 4. During testing, the test fixture 5 is mounted on the test piece 4. After testing, the test fixture 5 is detached, and different test pieces 6 can be tested.

[0023] When the test fixture 5 is installed on the test piece 4 and located in the optical path of the light source 2, the first sensing surface 411 of the photosensitive unit 41 of the test piece 4 and the second sensing surface 61 of the test piece 6 are both facing the optical path direction of the light source 2, so that the first sensing surface (411) and the second sensing surface (61) receive the unified optical path illumination of the light source (2) synchronously, thereby allowing the light to cover the two sensing surfaces at the same angle and the same intensity, reducing the test data deviation caused by the different light reception amount, and ensuring that the comparison benchmark of the photosensitive unit 41 and the test piece 6 is consistent.

[0024] The photosensitive unit 41 of the device under test 4 can be an ambient light sensor on the top of the B side of a laptop, a CV camera, a brightness or color temperature sensor integrated into a separate test screen, a front-facing camera of an electronic device, an ambient light sensor, etc.

[0025] The testing machine 7 is connected to the test piece 6 to detect whether the performance of the photosensitive unit (41) of the test piece (4) meets the standard. The testing machine 7 can synchronously collect the reference data of the test piece 6 in real time, without the need for manual reading of the test piece 6 data and comparison with the data of the photosensitive unit 41. During the test, the door of the light shield 1 is closed to ensure that no external stray light enters, and the testing machine 7 is started. After the test piece 6 receives the light from the light source 2, it transmits the data such as light intensity and color temperature to the testing machine 7 in real time; after the photosensitive unit 41 of the test piece 4 receives the same light, it transmits the sensed data to the testing machine 7. The testing machine 7 processes the collected data.

[0026] The tester 7 can perform signal acquisition, data processing and test result output, including acquiring and analyzing the reference signal of the test piece 6, providing a reference benchmark for the performance determination of the test piece 4, and assisting in the determination of the photosensitivity performance of the test piece 4.

[0027] The photosensitive testing device provided in this disclosure can avoid the influence of differences in human operation, making the test results of different batches and different personnel comparable and reproducible, and adapting to the quality control needs of large-scale production.

[0028] In some specific implementation methods, such as Figure 2 , Figure 3 and Figure 4 As shown, the test fixture 5 includes a reflector 53, which is located in the optical path between the light source 2 and the test piece 6 and the test piece 4. The reflector 53 is used to change the propagation direction of the light emitted by the light source 2, so that the light enters the first sensing surface 411 of the photosensitive unit 41 and the second sensing surface 61 of the test piece 6 perpendicularly, so that the first sensing surface (411) and the second sensing surface (61) synchronously receive the unified optical path illumination of the light source (2). By changing the direction of the optical path (such as changing the "downward light" of the light source 2 of the top plate 12 to "horizontal light"), the reflector 53 can force the light to enter the first sensing surface 511 of the photosensitive unit 41 and the second sensing surface 61 of the test piece 4 at a vertical angle, ensuring that the test environment is consistent with the calibration standard of the photosensitive unit 41, so that the test results can truly reflect the inherent performance of the photosensitive unit 41.

[0029] In some specific embodiments, the test fixture 5 includes a base 50 and a first support 51 and a second support 52 located on both sides of the base 50; the test piece 6 is disposed on the base 50; and the reflector 53 is disposed on the first support 51.

[0030] The base 50 serves as the fixed carrier for the test piece 6, and its positioning groove, snap-fit, and other structures ensure that the test piece 6 (such as a standard lux meter) is uniquely and stably positioned on the base 50. Optionally, the test piece 6 is embedded in the positioning groove of the base 50.

[0031] Meanwhile, the first support 51 is rigidly connected to the base 50. Optionally, the first support 51 and the base 50 are integrally formed or fixed by bolts. After the reflector 53 is installed on the first support 51, the distance and angle relationship between it and the test piece 6 on the base 50 are precisely locked, avoiding the displacement of the reflector 53 or the offset of the test piece 6 due to loose parts during the test. This ensures that the light reflected by the reflector 53 can stably hit the sensing surface of the test piece 6, providing a constant reference position for subsequent "same optical path comparison" with the photosensitive unit 41 of the test piece 4.

[0032] In some specific implementation methods, such as Figure 2As shown, the light-shielding box 1 includes a base plate 11; the clamping assembly 3 includes a first clamping plate 31, a second clamping plate 32, and a torsion spring 33; the first clamping plate 31 is disposed on the base plate 11, and the first clamping plate 31 is provided with a rotating shaft 311, the second clamping plate 32 is rotatably connected to the rotating shaft 311, and the torsion spring 33 is sleeved on the rotating shaft 311; the torsion spring 33 includes a first leg 331 and a second leg 332, the first leg 331 abuts against the first clamping plate 31, and the second leg 332 abuts against the second clamping plate 32. The torsion spring 33 is sleeved on the rotating shaft 311 and the two legs abut against the first clamping plate 31 and the second clamping plate 32 respectively. When the second clamping plate 32 rotates around the rotating shaft 311, the torsion spring 33 generates a reverse elastic force due to deformation. After the second clamping plate 32 is released, the elastic force will continue to push the second clamping plate 32 toward the first clamping plate 31, forming a constant clamping force. When loading and unloading the test piece 4, simply overcome the elastic force of the torsion spring 33 and move the second clamping plate 32 away from the first clamping plate 31 to open the clamping space for inserting or removing the test piece 4. After releasing the second clamping plate 32, the torsion spring 33 automatically resets and drives the clamping plate to tighten, eliminating the need for complex operations such as manually tightening screws or adjusting clips. The elastic deformation of the torsion spring 33 has a certain range, which, combined with the rotation angle of the second clamping plate 32 around the pivot 311, can accommodate test pieces 4 of different thicknesses. On the one hand, the constant clamping force ensures that the test piece 4 remains in contact with the clamping plate during testing, preventing the photosensitive unit 41 from deviating from the optical path due to loosening, thus avoiding test data distortion. On the other hand, the elastic force has a buffering effect, so even if there are slight differences in the thickness of the test piece 4, the clamping force can be adaptively adjusted by the deformation of the torsion spring 33, avoiding surface damage and frame deformation of the test piece 4 caused by rigid clamping, which is especially suitable for the testing needs of thin and light display panels.

[0033] In some specific implementation methods, such as Figure 4 As shown, the light-shielding box 1 includes a top plate 12, and a light source 2 is disposed on the top plate 12; the first clamping plate 31 is perpendicular to the bottom plate 11; the reflective surface 531 of the reflector 53 forms an angle of 45° with the first clamping plate 31. The light source 2 is disposed on the top plate 12 of the light-shielding box 1, forming an initial light path from top to bottom. The first clamping plate 31 is perpendicular to the bottom plate 11, so that the clamped test piece 4 (such as a display panel) is in a vertical state, and its photosensitive unit 41 has its sensing surface facing the horizontal direction; while the reflective surface 531 of the reflector 53 forms an angle of 45° with the first clamping plate 31 (vertical surface), which can just convert the vertical downward light from the light source 2 of the top plate 12 into horizontal forward light, ensuring that the light enters the sensing surface at a 90° vertical angle, thus ensuring the test accuracy.

[0034] like Figure 4 As shown, the incident light source 2 shines in and is reflected by the reflector 53 to the test piece 6 and the photosensitive element. Based on the optical path shown above, since a 45° reflecting plane is used, the total length of the optical path at each point is L = A1 + B1 = A2 + B2 = A3 + B3. This ensures that the distance from the test point to the light source 2 is the same.

[0035] In some specific embodiments, the first support 51 is provided with a clearance hole 511 for avoiding the photosensitive unit 41. The clearance hole 511 is set to allow the first support 51 to avoid the area where the photosensitive unit 41 is located by partially hollowing out, so that the first support 51 only contacts the non-photosensitive area of ​​the test piece 4. This avoids mechanical damage to the photosensitive unit 41 and ensures that the fixture can be stably attached to the test piece 4, laying a foundation for subsequent optical path calibration and test data acquisition without physical interference.

[0036] In some specific implementation methods, such as Figure 5 As shown, the test fixture 5 also includes an adjusting component 54, at least partially disposed between the first support 51 and the second support 52. The adjusting component 54 has an adjusting post 55, and the second support 52 has an adjusting hole. The adjusting post 55 passes through the adjusting hole, and a nut 56 is provided at the end of the adjusting post 55 away from the adjusting component 54. The nut 56 is threadedly engaged with the adjusting post 55. A spring 57 is fitted onto the adjusting post 55, and both ends of the spring 57 abut against the adjusting post 55 and the second support 52, respectively. By rotating the nut 56, the adjusting post 55 can be driven to move axially, thereby changing the distance between the first support 51 and the adjusting component 54. For test pieces 4 with different dimensions (such as the bezels of tablets and smart TVs), the distance adjustment can ensure that the positioning reference of the test fixture 5 and the test piece 4 is consistent. The adjusting component 54 can be plate-shaped and can be made of rubber material.

[0037] In some specific implementation methods, such as Figure 5 As shown, the first sensing surface 411 of the photosensitive unit 41 and the second sensing surface 61 of the test piece 6 are located on the same plane, so that the first sensing surface (411) and the second sensing surface (61) receive the same light intensity. The coplanar design ensures that the sum of the vertical distance and the horizontal distance between the two sensing surfaces and the light source 2 is exactly the same, and there is no difference in the intensity of the received light, thus improving the authenticity of the test results.

[0038] In some specific implementations, the testing machine 7 includes a data acquisition module and a data analysis module; the data acquisition module is used to acquire the sensing data of the test piece 6 and the sensing data of the photosensitive unit 41; the data analysis module is used to calculate the deviation value of the sensing data of the photosensitive unit 41 and the test piece 6 based on the sensing data acquired by the data acquisition module, so as to determine whether the performance of the photosensitive unit (41) of the test piece (4) meets the standard. The data acquisition module can be equipped with a high-precision data acquisition card, which has a multi-channel synchronous sampling function and can simultaneously connect the test piece 6 (such as a standard illuminance meter, a reference photosensitive sensor, etc., to provide standard sensing data) and the photosensitive unit 41 under test (such as an ambient light sensor of a display device, a camera photosensitive module, etc.). The data analysis module can be composed of a high-performance processor, a storage unit, etc., and can quickly process a large amount of data. During testing, the test piece 6 is installed on the testing fixture 5, the test piece 4 is installed on the clamping assembly 3, and the testing fixture 5 is installed on the test piece 4, ensuring that the test piece 6 and the test piece 4 are in the same testing environment (such as the same light, temperature, etc.) and the test-related conditions such as the optical path are consistent. The data acquisition module of the testing machine 7 is activated to simultaneously acquire the sensing data of the test piece 6 and the photosensitive unit 41, and transmits the acquired data to the data analysis module. After receiving the data, the data analysis module calculates the deviation value of the sensing data between the photosensitive unit 41 and the test piece 6 according to a preset algorithm, determines whether the photosensitive unit 41 is qualified according to a preset pass threshold, and displays and stores the results for subsequent traceability and quality analysis.

[0039] The data acquisition module can be a data acquisition card or a USB data acquisition device, etc.; the data acquisition module can convert the analog electrical signals (such as voltage or current) output by test piece 6, photosensitive unit 41, and test piece 6 into digital signals that can be processed by a computer. The data acquisition module can be a data acquisition card, MCU development board, dedicated ADC chip, or +MCU / FPGA or dedicated integrated circuit, etc.

[0040] The data analysis module can be a software program running on a PC or embedded processor. This program can be written in languages ​​such as LabVIEW, Python, C++, and C#, and includes multiple functional modules such as data reception, calculation and analysis, result judgment, and interactive output. The data analysis module can perform calculations, analysis, judgment, and output on the collected digital data. The data analysis module can be implemented based on a chip.

[0041] The testing process can be combined Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown. Among them, as Figure 6As shown, place the device under test (DUT) 4 on the test platform (base plate 11) of the light-shielding box 1 to provide a basic support for subsequent testing operations. Figure 7 As shown, the screen is fixed by using the A side (second clamp 32) and B side (first clamp 31) of the retaining assembly to fix the laptop screen at a position perpendicular to the base plate 11 of the light shield 1 at a 90° angle, ensuring that the screen remains stable and at a suitable angle during testing. Figure 8 As shown, install test fixture 5 and place it onto the image sensor (camera) of the laptop computer. Use the spring force to clamp it in place, ensuring that the test piece 6 of test fixture 5 is precisely fitted and securely fixed to the image sensor. Figure 9 As shown, adjust test fixture 5 to ensure that the computer's photosensitive element (camera) is completely unobstructed and remains stable without shaking, so that the photosensitive element (camera) can properly collect data. Figure 10 As shown, light source 2 provides a stable lighting environment for the test.

[0042] The detection device provided in this disclosure includes the photosensitive testing device provided in this disclosure. Since the detection device provided in this disclosure has the same advantages as the photosensitive testing device provided in this disclosure, it will not be described again here.

[0043] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this invention disclosure can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this disclosure can be achieved, and this is not limited herein.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] The above are merely specific embodiments of this disclosure, but the scope of protection of this patent is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A photosensitive testing device for testing the photosensitive unit (41) of a test piece (4), characterized in that, include: A light-shielding box (1) is provided with a light source (2) and a clamping assembly (3) inside the light-shielding box (1). The clamping assembly (3) is used to clamp the test piece (4). A test fixture (5) is set inside the light-shielding box (1). The test fixture (5) is equipped with a test piece (6). The test fixture (5) is detachably installed on the test piece (4). When the test fixture (5) is installed on the test piece (4) and located in the light path of the light source (2), the first sensing surface (411) of the photosensitive unit (41) and the second sensing surface (61) of the test piece (6) are both facing the light path direction of the light source (2), so that the first sensing surface (411) and the second sensing surface (61) synchronously receive the unified light path illumination of the light source (2). The tester (7) is connected to the test piece (6) to detect whether the performance of the photosensitive unit (41) of the test piece (4) meets the standard.

2. The photosensitive testing device according to claim 1, characterized in that, The test fixture (5) includes a reflector (53), which is located in the optical path between the light source (2) and the test piece (6) and the test piece (4). The reflector (53) is used to change the propagation direction of the light emitted by the light source (2) so that the light enters the first sensing surface (411) of the photosensitive unit (41) and the second sensing surface (61) of the test piece (6) perpendicularly, so that the first sensing surface (411) and the second sensing surface (61) synchronously receive the unified optical path illumination of the light source (2).

3. The photosensitive testing device according to claim 2, characterized in that, The test fixture (5) includes a base (50) and a first support (51) and a second support (52) located on both sides of the base (50); The test piece (6) is disposed on the base (50); The reflector (53) is disposed on the first support (51).

4. The photosensitive testing device according to claim 3, characterized in that, The light-shielding box (1) includes a base plate (11); The clamping assembly (3) includes a first clamping plate (31), a second clamping plate (32), and a torsion spring (33); The first clamping plate (31) is disposed on the base plate (11), the first clamping plate (31) is provided with a rotating shaft (311), the second clamping plate (32) is rotatably connected to the rotating shaft (311), and the torsion spring (33) is sleeved on the rotating shaft (311); The torsion spring (33) includes a first leg (331) and a second leg (332), the first leg (331) abutting against the first clamping plate (31), and the second leg (332) abutting against the second clamping plate (32).

5. The photosensitive testing device according to claim 4, characterized in that, The light-shielding box (1) includes a top plate (12), and the light source (2) is disposed on the top plate (12); The first clamping plate (31) is perpendicular to the base plate (11); The reflective surface (531) of the reflector (53) forms an angle of 45° with the first clamping plate (31).

6. The photosensitive testing device according to claim 3, characterized in that, The first support (51) is provided with a clearance hole (511) for avoiding the photosensitive unit (41).

7. The photosensitive testing device according to claim 3, characterized in that, The test fixture (5) also includes an adjusting member (54), at least a portion of which is disposed between the first support (51) and the second support (52); The adjusting member (54) is provided with an adjusting post (55), the second support (52) is provided with an adjusting hole, the adjusting post (55) passes through the adjusting hole, and a nut (56) is provided at one end of the adjusting post (55) away from the adjusting member (54), and the nut (56) is threadedly engaged with the adjusting post (55). The adjusting column (55) is fitted with a spring (57), and the two ends of the spring (57) abut against the adjusting column (55) and the second support (52) respectively.

8. The photosensitive testing device according to claim 1, characterized in that, The first sensing surface (411) of the photosensitive unit (41) and the second sensing surface (61) of the test piece (6) are located on the same plane so that the first sensing surface (411) and the second sensing surface (61) receive the same light intensity.

9. The photosensitive testing device according to claim 1, characterized in that, The testing machine (7) includes a data acquisition module and a data analysis module; The data acquisition module is used to acquire the sensing data of the test piece (6) and the sensing data of the photosensitive unit (41); The data analysis module is used to calculate the deviation value of the sensing data between the photosensitive unit (41) and the test piece (6) based on the sensing data collected by the data acquisition module, so as to determine whether the performance of the photosensitive unit (41) of the test piece (4) meets the standard.

10. A testing device, characterized in that, Includes the photosensitive testing device according to any one of claims 1 to 9.

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