Testing device

Abstract

The utility model discloses a testing device, and relates to the field of image sensor testing. The testing device comprises a glass panel, a light source and a bearing part. Wherein the glass panel has light transmittance, the light transmittance of the glass panel is not uniform, and the glass panel can move in the plane where the glass panel is located. The light source is arranged on one side of the glass panel and emits testing light to the glass panel. The bearing part is arranged on the other side of the glass panel, the bearing part is used for bearing equipment to be tested, and the bearing part can move in the direction close to or away from the glass panel.

Description

Technical Field

[0001] The utility model relates to the technical field of image sensor testing, in particular to a testing device. Background Art

[0002] Event camera, or event-based vision sensor (EVS), is a new type of image sensor. Unlike traditional cameras, EVS does not output image frames at a constant rate, but records the brightness change information of pixels in real time. When these pixel-level brightness changes exceed the set threshold (defined as an event), EVS marks its timestamp and outputs an asynchronous event stream. Compared with traditional cameras, EVS has the advantages of low data rate, low power consumption, low latency, and high dynamic range.

[0003] The performance test of EVS is of great significance to ensure its performance in various application scenarios. By performing performance test on EVS, the performance of EVS can be evaluated and optimized to meet the shooting needs of users in high-speed, dynamic and low-light scenes. However, there is a lack of equipment on the market that can test the performance of EVS modules / products. Utility Model Content

[0004] The embodiments of the present application provide a testing device that can test various performances of an event camera to meet the user's shooting needs in different scenarios.

[0005] In a first aspect, the present application provides a testing device, which includes a glass panel, a light source, and a bearing portion. The glass panel is light-transmissive, and the light transmittance of the glass panel is uneven, and the glass panel can move within the plane in which it is located. The light source is arranged on one side of the glass panel, and the light source emits a test light to the glass panel. The bearing portion is arranged on the other side of the glass panel, and the bearing portion is used to carry a device to be tested, and the bearing portion can move in a direction close to or away from the glass panel.

[0006] On this basis, the device to be tested in the present application can be an event camera, or a device including an event camera. By arranging the bearing part and the light source on both sides of the glass panel, the bearing part is used to place the device to be tested, and both the bearing part and the glass panel are movable. When any event of the glass panel movement and the bearing part movement occurs, the light intensity received by the device to be tested will change, that is, an event response will be generated, thereby enabling the test of the device to be tested. The test requirements of the device to be tested in different scenarios are met.

[0007] In a possible design manner of the first aspect, the light source is a surface light source, and the illumination intensity of the test light is adjustable.

[0008] In a possible design of the first aspect, the test light is a flashing light or a static light. On this basis, by setting the light source to a flashing light, the light intensity received by the event camera in the device to be tested will change, that is, an event response will be generated, and the test of the device to be tested can also be achieved.

[0009] In a possible design manner of the first aspect, the glass panel includes a first area and a second area, the first area is light-transmissive, and the second area is light-impermeable.

[0010] In a possible design of the first aspect, the glass panel includes a first panel, a second panel and a pattern layer, wherein the pattern layer is disposed between the first panel and the second panel. The first panel and the second panel are both light-transmissive, and a pattern with uneven light transmittance is disposed on the pattern layer.

[0011] In a possible design manner of the first aspect, a moving direction of the carrying portion is perpendicular to a plane where the glass panel is located.

[0012] In a possible design mode of the first aspect, the device further includes a base and a support frame, wherein the support frame is fixedly connected to the base. The light source is fixedly connected to one side of the support frame. The glass panel is slidably connected to the other side of the support frame via a first sliding assembly. The bearing portion is slidably connected to the base via a second sliding assembly, and the bearing portion is arranged on a side of the glass panel away from the light source.

[0013] In a possible design of the first aspect, the first sliding assembly includes a first slide rail and a second slide rail, the first slide rail is disposed on the support frame, the second slide rail is slidably connected to the first slide rail, and the glass panel is slidably connected to the second slide rail. The second slide rail slides back and forth along a first direction on the first slide rail, and the glass panel slides back and forth along a second direction on the second slide rail, and the first direction is perpendicular to the second direction.

[0014] In a possible design of the first aspect, the second sliding assembly includes a third slide rail, the third slide rail is fixed to the base, and the bearing portion is slidably connected to the third slide rail. The bearing portion slides back and forth along a third direction on the third slide rail, and the third direction is perpendicular to both the first direction and the second direction.

[0015] In a possible design manner of the first aspect, the bearing portion includes a bearing surface, and a thread is provided on the bearing surface.

[0016] The beneficial effects of this application are:

[0017] The test device provided in the present application is configured to be movable on the plane in which the glass panel is located by providing a glass panel with uneven light transmittance. A light source is provided on one side of the glass panel, and the light source is used to emit a flashing light or a static light with adjustable light intensity to the glass panel. A bearing portion is provided on the side of the glass panel away from the light source, and the bearing portion is used to carry the device to be tested (including the event camera). By adjusting the light intensity of the light source and by controlling the movement of the glass panel and / or the bearing portion, the light intensity of the light received by the event camera is adjusted, thereby realizing a subjective and objective performance test of the event camera. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a testing device provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the back structure of a testing device provided in an embodiment of the present application.

[0021] In the figure: 100 - testing device; 110 - light source; 120 - glass panel; 130 - bearing part;

[0022] 140-base; 150-support frame; 160-first sliding assembly; 170-second sliding assembly;

[0023] 161 - first slide rail; 162 - second slide rail; 171 - third slide rail; 131 - bearing surface. DETAILED DESCRIPTION

[0024] The technical solution in this application will be described below in conjunction with the accompanying drawings.

[0025] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0026] In the embodiments of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0027] It should be understood that the terms used in the description of the various examples herein are only for describing specific examples and are not intended to be limiting. As used in the description of the various examples, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0028] In this application, "at least one" means one, two or more, and "more" means more than two. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple.

[0029] It should also be understood that in the present application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a sliding connection, a detachable connection, or an integral connection, etc.; it can be a direct connection or an indirect connection through an intermediate medium.

[0030] It should also be understood that the term “comprise” (also known as “includes,” “including,” “comprises” and / or “comprising”) when used in this specification specifies the presence of stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0031] It should be understood that the "one embodiment", "another embodiment", "a possible design" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment or implementation are included in at least one embodiment of the present application. Therefore, "in one embodiment of the present application" or "in another embodiment of the present application", "a possible design" appearing in various places throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0032] It should also be understood that the specific values ​​mentioned in the embodiments of the present application do not limit the specific dimensions of specific features or structures. The relevant values ​​may be examples for easy understanding, or they may be the theoretically optimal theoretical values ​​of a certain feature. In practice, the relevant dimensions may be a range of the value appended thereto, for example, the range may be ±10% of the optimal theoretical value, or ±20% of the optimal theoretical value, and in practice, the corresponding technical effect can be achieved.

[0033] The vertical in the embodiments of the present application includes some situations similar to vertical, for example, the situation where the angle between lines, lines and planes, and planes is 80° to 100° can also be understood as vertical, rather than strictly limiting the angle between the two to 90° to be vertical. Similarly, the parallel in the embodiments of the present application also includes situations similar to parallel, that is, the situation where the angle between lines, lines and planes, and planes is 0° to 10° can also be understood as parallel.

[0034] Event camera, a new type of image sensor, is an event-based vision sensor (EVS). Event cameras work differently from traditional cameras. EVS does not output image frames at a constant rate, but records the brightness change information of pixels in real time. When these pixel-level brightness changes exceed the set threshold (defined as an event), EVS marks its timestamp and outputs an asynchronous event stream. Compared with traditional cameras, EVS has the advantages of low data rate, low power consumption, low latency, and high dynamic range.

[0035] The performance test of EVS is of great significance to ensure its performance in various application scenarios. By performing performance test on EVS, the performance of EVS can be evaluated and optimized to meet the shooting needs of users in high-speed, dynamic and low-light scenes. However, there is currently no equipment on the market that can test the subjective and objective performance of EVS modules / products.

[0036] In order to test various performances of an event camera and meet users' shooting needs in different scenarios, an embodiment of the present application provides a testing device.

[0037] refer to Figure 1 , Figure 1 A schematic diagram of a test device provided in an embodiment of the present application. Figure 1As shown, the test device 100 in the embodiment of the present application includes a light source 110, a glass panel 120 and a bearing portion 130, wherein the light source 110 is arranged on one side of the glass panel 120, and the bearing portion 130 is arranged on the other side of the glass panel 120. The light source 110 can emit a test light, and the irradiation direction of the test light is the direction in which the glass panel 120 is located. The glass panel 120 is light-transmitting, and the light transmittance of the glass panel 120 is uneven. The bearing portion 130 is used to carry a device to be tested, and the device to be tested can be an event camera, or a device including an event camera. When the light source 110 emits a test light, the test light can pass through the glass panel 120 and be received by the event camera in the device to be tested.

[0038] In the embodiment of the present application, both the glass panel 120 and the carrying device can be moved, wherein when the glass panel 120 is moved, the glass panel 120 can be moved within the plane in which it is located, so that the distance between the light source 110 and the glass panel 120 can be kept constant, thereby ensuring the light intensity of the test when it reaches the glass panel 120. The carrying portion 130 can also be moved, and when the carrying portion 130 is moved, the carrying portion 130 can be moved in a direction close to or away from the glass panel 120. By adjusting the distance between the carrying portion 130 and the glass panel 120, the light intensity of the test light received by the device to be tested on the carrying portion 130 can be adjusted.

[0039] It should be noted that the distance between the light source 110 and the glass panel 120 refers to the straight-line distance from the light source 110 to the plane where the glass panel 120 is located. The distance between the supporting portion 130 and the glass panel 120 refers to the straight-line distance from the supporting portion 130 to the plane where the glass panel 120 is located. Generally speaking, the supporting portion 130 moves along a straight line. Therefore, when the supporting portion 130 is moved so that the supporting portion 130 is close to or away from the glass panel 120, the moving direction of the supporting portion 130 may be perpendicular to the plane where the glass panel 120 is located.

[0040] In one embodiment of the present application, the illumination intensity of the test light emitted by the light source 110 is adjustable so as to adjust the illumination intensity to the required intensity according to the needs of the test. The test light emitted by the light source 110 may be a flickering light or a static light, wherein the flickering light refers to a test light whose illumination intensity varies up and down based on a reference illumination intensity, and the static light refers to a test light whose illumination intensity remains unchanged based on the reference illumination intensity.

[0041] It is understandable that the event camera is a sensor based on visual perception. Unlike traditional cameras, it does not capture the image of the entire scene at fixed time intervals, but outputs data only when changes in the scene are detected. This working principle gives event cameras significant advantages in dynamic scene capture and high-speed motion detection. The working principle of the event camera is based on the photoelectric effect. When the brightness of a pixel exceeds a certain threshold, an event is triggered. This event records the difference between the front and back brightness values ​​of the pixel and the timestamp of the event. Therefore, when any of the events of the light source 110 emitting flashing light, the glass panel 120 moving (the transmittance of the glass panel 120 is uneven), and the bearing part 130 moving occurs, the light intensity of the test light received by the event camera in the device to be tested will change, that is, an event response will be generated.

[0042] The light source 110 can be a surface light source 110. When the surface light source 110 is set, the surface light source 110 can be set parallel to the glass panel 120. It is understandable that the surface light source 110 can provide a more uniform lighting effect, and the thermal effect is low, and can provide a better test environment and test effect. Of course, the embodiment of the present application does not limit the specific type of the light source 110. For example, a point light source 110 or a spherical light source 110 can be used as needed.

[0043] In one embodiment of the present application, the light source 110 may include a light source 110 panel with adjustable light intensity and a signal generator, wherein the signal generator is configured to send a fluctuating signal to the light source 110 panel so that the light source 110 panel generates flickering light, or to send a steady-state signal to the light source 110 panel so that the light source 110 panel generates static light.

[0044] The light source 110 panel can be a thin, uniformly emitting lighting device with uniform illumination and high color reproduction index, and can provide a soft, glare-free lighting effect. The fluctuation signal can be any one or a combination of a sine wave signal, a triangle wave signal, a trapezoidal wave signal, and a square wave signal.

[0045] In one embodiment of the present application, the glass panel 120 may include a first area and a second area, wherein the first area is a light-transmitting area and has light transmittance; and the second area is an opaque area and has no light transmittance. The light transmittance of the first area is uneven. It should be noted that the glass panel 120 may include a plurality of first areas and a plurality of second areas, and the first areas and the second areas are arranged in an alternating manner. For example, the alternating arrangement may mean that the areas adjacent to the first area are all second areas, and the areas adjacent to the second area are all first areas.

[0046] In another embodiment of the present application, the glass panel 120 may include a first panel, a second panel and a pattern layer, wherein the pattern layer is disposed between the first panel and the second panel, and any one of the first panel and the second panel is movable or detachable. The first panel and the second panel are both light-transmitting, for example, the first panel and the second panel are both transparent glass. A pattern with uneven light transmittance is disposed on the pattern layer, and the light transmittance of the entire glass panel 120 can be made uneven based on the pattern on the pattern layer.

[0047] When a complete glass panel 120 needs to be formed, the first panel and the second panel can be fixed, and the pattern layer can be clamped by the first panel and the second panel, so that the pattern layer is firmly between the first panel and the second panel. When the light transmittance of the glass panel 120 needs to be adjusted, the first panel or the second panel can be moved, or the first panel and the second panel can be disassembled to separate the first panel and the second panel. Then, the pattern layer with different light transmittance can be replaced to adjust the light transmittance of the glass panel 120.

[0048] Through the above configuration, the stability of the pattern layer is improved while the convenience of replacing the pattern layer is improved, so that the light transmittance of the glass panel 120 can be adjusted quickly and conveniently. When it is necessary to face different test scenarios and adjust the light transmittance of the glass panel 120, the pattern layer in the glass panel 120 can be replaced to quickly adjust the light transmittance of the glass panel 120.

[0049] By arranging the bearing part 130 and the light source 110 for placing the device to be tested on both sides of the glass panel 120, and arranging that both the bearing part 130 and the glass panel 120 can be moved, when any event of the glass panel 120 moving or the bearing part 130 moving occurs, the light intensity received by the device to be tested will change, that is, an event response will be generated, so that the test of the device to be tested can be achieved. By setting the light source 110 to a flashing light, the test of the device to be tested can also be achieved. The test requirements of the device to be tested in different scenarios are met.

[0050] It should be noted that, generally speaking, the performance test of the event camera in the device to be tested includes subjective performance test and objective performance test, among which the objective performance test mainly includes signal ratio test, contrast sensitivity test and stationary noise test. The following briefly introduces the implementation methods in different test scenarios.

[0051] When the test scenario is to perform a signal ratio test on an event camera, the test device 100 in the above embodiment can be used. The device to be tested (including the event camera) is placed on the bearing portion 130 and fixed, the light source 110 is controlled to output a flickering light, and the event data output by the event camera to be tested is obtained when the illumination intensity of the flickering light is at a rising edge or a falling edge (a jump frame), and the ratio of the event amount in the transparent area of ​​the glass panel 120 to the area of ​​the glass panel 120 is calculated based on the event data to obtain the signal ratio of the event camera to be tested.

[0052] When the test scenario is to perform a contrast sensitivity test on an event camera, the test device 100 in the above embodiment can be used. The device to be tested (including the event camera) is placed on the bearing portion 130 and fixed, the light source 110 is controlled to output flickering light of different reference light intensities, and the event data output by the event camera to be tested when the light intensity of the flickering light is at a rising edge or a falling edge (a jump frame) under each reference light intensity is obtained. Based on the event data, the event response of the event camera to be tested under different reference light intensities can be calculated to complete the contrast sensitivity test.

[0053] When the test scenario is to perform a static noise test on an event camera, the test device 100 in the above embodiment can be used. The device to be tested (including the event camera) is placed on the bearing portion 130 and fixed, the light source 110 is controlled to output static light of different reference light intensities, and the event data output by the event camera to be tested is collected, and the static noise of the event camera to be tested under different reference light intensities can be obtained based on the event data.

[0054] When the test scenario is to perform a subjective performance test on an event camera, the test device 100 in the above embodiment can be used. The device to be tested (including the event camera) is placed on the bearing portion 130 and fixed, the light source 110 is controlled to output flashing light or static light of different reference light intensities, and at least one of the glass panel 120 and the bearing portion 130 is controlled to move back and forth, and the event data (subjective event information) output by the event camera to be tested is collected at the same time.

[0055] It is understandable that the embodiment of the present application provides a performance test scenario for an event camera. The glass panel 120 in the embodiment of the present application can be replaced according to the actual test scenario to meet the requirements of different test scenarios. For example, when the glass panel 120 uses a glass panel 120 with a light-transmitting area and an opaque area, it can be used in the signal ratio test scenario of the above-mentioned event camera to be tested. When the glass panel 120 uses a glass panel 120 with a pattern layer with different light transmittance, it can be used in the contrast sensitivity test, static noise test and subjective performance test scenarios of the event camera to be tested.

[0056] In an embodiment of the present application, a specific structural setting of the testing device 100 is also provided. Figure 2 , Figure 2 A schematic diagram of the specific structure of a testing device provided in an embodiment of the present application.

[0057] like Figure 2 As shown, the testing device 100 in the embodiment of the present application includes a base 140 and a support frame 150, and the support frame 150 is fixedly connected to the base 140. The light source 110 is fixedly connected to one side of the support frame 150, and the glass panel 120 is slidably connected to the other side of the support frame 150 through a first sliding component 160. The bearing part 130 is slidably connected to the base 140 through a second sliding component 170, and the bearing part 130 is arranged on a side of the glass panel 120 away from the light source 110.

[0058] By setting the first moving assembly, the glass panel 120 can be moved, and by setting the second sliding assembly 170, the bearing part 130 can be moved. Since the device to be tested is fixedly placed on the bearing part 130, the device to be tested can be moved.

[0059] In one embodiment of the present application, the first sliding assembly 160 includes a first slide rail 161 and a second slide rail 162, wherein the first slide rail 161 is fixedly connected to the support frame 150, the second slide rail 162 is slidably connected to the first slide rail 161, and the glass panel 120 is slidably connected to the second slide rail 162. The second slide rail 162 can slide back and forth along a first direction on the first slide rail 161, and the glass panel 120 can slide back and forth along a second direction on the second slide rail 162, the first direction is perpendicular to the second direction, and the first direction and the second direction are both located in the plane where the glass panel 120 is located.

[0060] The first slide rail 161 and the second slide rail 162 are provided to form a first sliding assembly 160. The first slide rail 161 is provided on the support frame 150. A slide groove can be provided between the second slide rail 162 and the first slide rail 161 to achieve the sliding of the second slide rail 162 on the first slide rail 161. The glass panel 120 can also be slidably connected in the slide groove on the second slide rail 162 to achieve the sliding of the glass panel 120 on the second slide rail 162. The first direction can be set to be a direction perpendicular to the plane where the base 140 is located, that is, a vertical direction; the second direction can be set to be a direction parallel to the plane where the base 140 is located, that is, a horizontal direction. The first direction and the second direction are both set to be located in the plane where the glass panel 120 is located. When the glass panel 120 is slid, the glass panel 120 can be made to slide in the plane where it is located.

[0061] In one embodiment of the present application, the second sliding assembly 170 includes a third slide rail 171, the third slide rail 171 is fixed on the base 140, and the bearing portion 130 is slidably connected to the third slide rail 171. The bearing portion 130 slides on the third slide rail 171 along a third direction, and the third direction is perpendicular to both the first direction and the second direction.

[0062] By setting the third direction perpendicular to both the first direction and the second direction, that is, the moving direction of the carrying part 130 is perpendicular to the plane where the glass panel 120 is located, when the carrying part 130 is slid back and forth in the third direction, the carrying part 130 can be moved closer to or away from the glass panel 120.

[0063] In one embodiment of the present application, a bearing surface 131 is provided on the bearing portion 130, and a honeycomb thread is provided on the bearing surface 131. By providing the thread, the device to be tested can be better fixed on the bearing portion 130.

[0064] In an embodiment of the present application, the sliding of the second guide rail on the first guide rail, the sliding of the glass panel 120 on the second guide rail, and the sliding of the bearing part 130 on the third guide rail can all be controlled by a servo motor. The sliding stroke of the second guide rail on the first guide rail, the sliding of the glass panel 120 on the second guide rail, and the sliding stroke of the bearing part 130 on the third guide rail can be set to be greater than or equal to 60 cm, and the sliding speed can be set as needed. Generally speaking, the sliding speed can be set as fast as possible.

[0065] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

[0066] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0067] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the protection scope of the present application includes the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present application.

[0068] This article uses specific examples to illustrate the working principle and implementation method of the testing device of the present application. The description of the above embodiments is only used to help understand the specific settings and core ideas of the present application. At the same time, for general technicians in this field, according to the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

[0069] The above contents are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A testing device, characterized in that: include: A glass panel, wherein the glass panel is light-transmissive and the light transmittance of the glass panel is uneven, and the glass panel can move within the plane in which it is located; A light source, the light source is disposed on one side of the glass panel, and the light source emits a test light to the glass panel; A carrying part, which is arranged on the other side of the glass panel, is used to carry the device to be tested, and can move in a direction approaching or moving away from the glass panel.

2. The testing device according to claim 1, characterized in that: The light source is a surface light source, and the illumination intensity of the test light is adjustable.

3. The testing device according to claim 2, characterized in that: The test light is a flashing light or a static light.

4. The testing device according to any one of claims 1 to 3, characterized in that: The glass panel includes a first area and a second area, the first area is light-transmissive, and the second area is light-impermeable.

5. The testing device according to any one of claims 1 to 3, characterized in that: The glass panel comprises a first panel, a second panel and a pattern layer, wherein the pattern layer is arranged between the first panel and the second panel; The first panel and the second panel are both light-transmissive, and a pattern with uneven light transmittance is arranged on the pattern layer.

6. The testing device according to any one of claims 1 to 3, characterized in that: The moving direction of the bearing portion is perpendicular to the plane where the glass panel is located.

7. The testing device according to any one of claims 1 to 3, characterized in that: It also includes a base and a support frame, wherein the support frame is fixedly connected to the base; The light source is fixedly connected to one side of the support frame; The glass panel is slidably connected to the other side of the support frame via a first sliding assembly; The bearing part is slidably connected to the base through a second sliding assembly, and the bearing part is arranged on a side of the glass panel away from the light source.

8. The testing device according to claim 7, characterized in that: The first sliding assembly comprises a first sliding rail and a second sliding rail, the first sliding rail is arranged on the supporting frame, the second sliding rail is slidably connected to the first sliding rail, and the glass panel is slidably connected to the second sliding rail; The second slide rail slides back and forth along a first direction on the first slide rail, and the glass panel slides back and forth along a second direction on the second slide rail, and the first direction is perpendicular to the second direction.

9. The testing device according to claim 8, characterized in that: The second sliding assembly includes a third sliding rail, the third sliding rail is fixed on the base, and the bearing portion is slidably connected to the third sliding rail; The bearing portion slides back and forth on the third slide rail along a third direction, and the third direction is perpendicular to both the first direction and the second direction.

10. The testing device according to any one of claims 1 to 3, characterized in that: The bearing portion comprises a bearing surface, and a thread is arranged on the bearing surface.

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