Light-free environment test equipment

Abstract

The utility model relates to a light-free environment test device, and the device comprises a housing which is provided with an accommodation cavity; the testing assembly is arranged in the containing cavity and comprises a support and a testing jig arranged on the support, the support is arranged on the shell, and the testing jig is used for installing a module to be tested; the light-proof assembly is arranged in the containing cavity, the light-proof assembly comprises a light-proof cover which is arranged in a lifting mode relative to the support, a first opening is formed in the side, facing the testing jig, of the light-proof cover, a light-emitting part is arranged in the light-proof cover, and the shooting end of the testing module faces the light-emitting part. The light-free environment test equipment has a good shading effect, the test effect of the module in the light-free environment can be ensured, dust ions on the shading curtain can be prevented from polluting the lens surface of the module to be tested due to external force vibration, and the test reliability of the module in the light-free environment is ensured.

Description

Technical Field

[0001] The present application relates to the field of module manufacturing and testing technology, and in particular to a lightless environment testing device. Background Art

[0002] With the advancement of technology, users' requirements for mobile phone camera effects have also increased significantly. After the mobile phone camera module is assembled, various tests will be carried out, including photo tests in different light and dark environments, different temperature spaces and other conditions, to detect whether the camera performance of the mobile phone camera module meets the requirements. Among them, the dark environment photo test specifically refers to controlling the camera module to shoot specific photo reference objects in a dark environment, and finally judging whether the camera performance of the camera module meets the requirements based on the analysis of the software. During the test, because light directly affects the final imaging effect, how to prevent the penetration of external light sources is crucial.

[0003] In the prior art, the shading method currently used in the market is to install a cloth-like blackout curtain on the outer cover of the test equipment, but the density of the blackout curtain is not high enough, and the light-proof effect itself is not ideal. Since the blackout curtain has a certain degree of adhesion, the dust plasma (also known as dust ions) in the air will adhere to the blackout curtain. During the operation of the test equipment, the vibration of the test equipment will drive the dust ions on the blackout curtain. The dust ions float in the internal space of the equipment, which is easy to contaminate the lens surface of the camera module, causing the test effect to be affected. Utility Model Content

[0004] The present application provides a lightless environment testing device to solve the technical problem that dust ions on the existing blackout curtains easily contaminate the lens surface of the camera module, thus affecting the test effect.

[0005] An embodiment of the present application provides a light-free environment testing device, including: a shell, which is provided with a accommodating cavity; a test component, which is arranged in the accommodating cavity, the test component includes a bracket and a test fixture arranged on the bracket, the bracket is arranged on the shell, and the test fixture is used to install a module to be tested; and a light-proof component, which is arranged in the accommodating cavity, the light-proof component includes a light-proof cover that is raised and lowered relative to the bracket, a first opening is provided on the side of the light-proof cover facing the test fixture, a light-emitting component is provided in the light-proof cover, and a shooting end of the test module faces the light-emitting component.

[0006] In one possible implementation, the light protection component also includes a slide rail, a slide table and a driving component. The slide rail is arranged on the outer shell, the slide table is slidably connected to the slide rail, the light protection cover is arranged on the slide table, and the driving component is transmission-connected to the slide table to drive the slide table to perform reciprocating lifting and lowering motion along the slide rail.

[0007] In a possible implementation, a damper is provided at one end of the slide rail close to the test fixture to reduce the impact force on the slide rail when the slide table moves toward the test fixture.

[0008] In one possible implementation, the light shield includes an upper cover plate and a rectangular frame connected to each other, a first opening is provided on a side of the rectangular frame facing the test fixture, the upper cover plate is connected to a side of the rectangular frame facing away from the first opening, and the light-emitting part is connected to a side of the upper cover plate facing the test fixture.

[0009] In one possible implementation, the test fixture includes a support member and a cover plate, the support member is arranged on a bracket, the cover plate has a first end and a second end arranged opposite to each other, the first end of the cover plate is rotatably connected to the support member, and the second end of the cover plate is connected to the support member; a placement groove adapted to the module to be tested is provided on the side of the support member facing the light-emitting member, a through hole corresponding to the placement groove is provided on the cover plate, and a connecting pin electrically connected to the module to be tested is provided in the placement groove of the support member.

[0010] In a possible implementation, the test assembly further includes a circuit board, the circuit board is located between the bracket and the support member, and the connecting pin is electrically connected to the circuit board.

[0011] In a possible implementation, a crosshair is disposed on the cover plate, the center of the crosshair is located in the mounting groove and the center of the crosshair is aligned with the center of the light-emitting element.

[0012] In a possible implementation, a buckle is rotatably provided on the support member, and the second end of the cover plate is snap-connected to the buckle.

[0013] In one possible implementation, the shell includes a main body frame in the shape of a rectangular parallelepiped, and a top plate, a bottom plate, a front plate, a rear plate, a left side plate and a right side plate are arranged on the main body frame. The top plate, the bottom plate, the front plate, the rear plate, the left side plate and the right side plate are arranged around the accommodating cavity, and the side of the top plate, the bottom plate, the front plate, the rear plate, the left side plate and the right side plate facing the accommodating cavity are all set as anti-reflective surfaces.

[0014] In a possible implementation, the test component is disposed on a bottom plate, a control button is disposed on the bottom plate, and a second opening is disposed at one end of the front plate close to the control button.

[0015] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0016] A lightless environment testing device provided by an embodiment of the present application. First, before the test, the module to be tested needs to be installed on the test fixture. Then, control the light shield with the light-emitting component to move towards the bracket, and stop when the distance between the light-emitting component and the surface of the module to be tested reaches the test standard distance (for example, 3 mm). At this time, the module to be tested is completely inside the light shield. Since there is a bracket with a certain height, the module to be tested can enter the light-shielding cover through the first opening, the light shield will not touch the housing, and can completely cover the module to be tested. Then, control the module to be tested to take a photo of the light-emitting component, and transmit the photo data to an external display device (such as a computer). The process of analyzing the photo data using the analysis software of the external display is a prior art and will not be elaborated here. Since both the test component and the light-shielding component are arranged in the accommodation cavity of the housing, a test space relatively isolated from the external environment is formed inside the light-shielding cover, and the housing further plays a role in shading, thus ensuring the test effect of the module in a lightless environment. The housing is made of a hard material and is stationary relative to the test fixture, which can avoid the dust ions on the light-shielding curtain from contaminating the lens surface of the camera module due to external vibration, and ensure the test reliability of the module in a lightless environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with the present application and, together with the specification, are used to explain the principles of the present application.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] One or more embodiments are illustrated by way of example in the accompanying drawings, and these exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the figures in the drawings do not constitute a scale limitation.

[0020] Figure 1 It is a schematic structural diagram of the lightless environment testing device provided by the embodiment of the present application;

[0021] Figure 2 For Figure 1 It is a partial schematic structural diagram of the lightless environment testing device shown, where the front panel is not shown;

[0022] Figure 3 For Figure 2 It is a perspective view of the light-shielding component of the lightless environment testing device shown;

[0023] Figure 4 For Figure 3 The side view of the light-shielding component of the lightless environment testing device shown;

[0024] Figure 5 For Figure 1 The perspective view of the testing component of the lightless environment testing device shown;

[0025] Figure 6 For Figure 5 The partial structural schematic diagram of the test fixture in the testing component shown;

[0026] Figure 7 For Figure 5 The top view of the testing component shown.

[0027] Explanation of reference numerals:

[0028] 100, housing; 101, accommodation cavity; 110, main body frame; 111, foot pad; 120, top plate; 130, bottom plate; 131, start button; 132, stop button; 140, front plate; 141, second opening; 142, handle; 143, hinge; 150, rear plate; 160, left side plate; 170, right side plate; 200, testing component; 210, bracket; 220, test fixture; 221, support member; 221a, placement groove; 222, cover plate; 222a, first end; 222b, second end; 222c, through hole; 222d, crosshair; 223, buckle; 230, circuit board; 300, light-shielding component; 310, light-shielding cover; 311, first opening; 312, upper cover plate; 313, rectangular frame; 320, light-emitting component; 330, slide rail; 340, slide table; 400, module to be tested. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0030] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present application. In addition, the present application may repeat reference numerals and / or letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0031] For ease of description, spatially relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure with respect to another element or feature. These relative relationship terms are, for example, "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such spatially relative relationship terms are intended to include different orientations of the device in use or operation other than the orientations depicted in the figure. For example, if the device in the figure undergoes a position flip or attitude change or motion state change, then these directional indications will change accordingly. For example, an element described as "below" or "beneath" another element or feature will then be oriented as "above" or "over" the other element or feature. Thus, the example term "below" can include both upward and downward orientations. The device may be oriented otherwise (rotated 90 degrees or in other directions) and the spatially relative relationship descriptors used in the text are interpreted accordingly.

[0032] To solve the technical problem that the dust ions on the existing light-shielding curtain are likely to contaminate the lens surface of the camera module, resulting in the influence on the test effect, the present application provides a lightless environment test device, which can avoid the contamination of the lens surface of the module to be tested by the dust ions on the light-shielding curtain due to external vibration, and ensure the test reliability of the module in a lightless environment.

[0033] Figures 1 to 3 A lightless environment test device provided by an embodiment of the present application includes a housing 100, a test component 200, and a light-proof component 300. The housing 100 is provided with a receiving cavity 101. The test component 200 is disposed in the receiving cavity 101. The test component 200 includes a bracket 210 and a test fixture 220 disposed on the bracket 210. The bracket 210 is disposed on the housing 100. The test fixture 220 is used to mount the module 400 to be tested. The light-proof component 300 is disposed in the receiving cavity 101. The light-proof component 300 includes a light-proof cover 310 that is arranged to move up and down relative to the bracket 210. A first opening 311 is provided on the side of the light-proof cover 310 facing the test fixture 220. A light-emitting member 320 is disposed inside the light-proof cover 310. The shooting end of the test module faces the light-emitting member 320.

[0034] It can be understood that, first, before the test, the module 400 to be tested needs to be installed on the test fixture 220. Then, control the light shield 310 to move the light-emitting component 320 towards the bracket 210 until it stops when the distance between the light-emitting component 320 and the surface of the module 400 to be tested reaches the test standard distance (e.g., 3 mm). At this time, the module 400 to be tested is completely inside the light shield 310. Due to the presence of the bracket 210 with a certain height, the module 400 to be tested can enter the light shield through the first opening 311, the light shield 310 will not touch the outer shell 100, and can completely cover the module 400 to be tested. Then, control the module 400 to be tested to take a photo of the light-emitting component 320 for testing, and the photo data is transmitted to an external display device (such as a computer). The process of analyzing the photo data using the analysis software of the external display is prior art and will not be elaborated here. Since both the test component 200 and the light shielding component 300 are arranged in the accommodation cavity 101 of the outer shell 100, a test space relatively isolated from the external environment is formed inside the light shield, and the outer shell 100 further provides a light shielding effect, thus ensuring the test effect of the module in a lightless environment. The outer shell 100 is made of a hard material and is stationary relative to the test fixture 220, which can prevent the dust ions on the light shielding curtain from contaminating the lens surface of the module 400 to be tested due to external vibration, and ensures the test reliability of the module in a lightless environment.

[0035] It should be noted that the first opening 311 can be set in shapes such as circular, square, etc., and no specific limitation is made here. The light shield 310 can be set in shapes such as cylindrical, square cylindrical, etc. The light shield 310 is also made of a hard material to avoid easily adsorbing dust ions in the air and causing pollution to the module 400 to be tested. The light-emitting component 320 can be a light-emitting device that can provide a standard test light source in the prior art, and its structure and working principle can refer to the prior art and will not be elaborated here.

[0036] In some embodiments, such as Figure 3 and Figure 4As shown, the light-proof component 300 also includes a slide rail 330, a slide table 340 and a driving member. The slide rail 330 is arranged on the housing 100, the slide table 340 is slidably connected to the slide rail 330, the light shield 310 is arranged on the slide table 340, and the driving member is transmission-connected to the slide table 340 to drive the slide table 340 to perform reciprocating lifting and lowering motion along the slide rail 330. Specifically, the length direction of the slide rail 330 can be parallel to the vertical direction. When the driving member drives the slide table 340 to move toward the bracket 210 along the slide rail 330, the light shield 310 and the light-emitting member 320 are driven to move toward the test fixture 220 until the light-emitting member 320 reaches the test standard distance from the module surface, and the slide table 340 stops moving. At this time, the test fixture 220 is located inside the light shield 310 to achieve the light-free environment required for the test. After the test is completed, the driving component controls the slide 340 to move away from the bracket 210 and return to the initial position, thereby realizing the lifting control of the light-emitting component 320 and the light-shielding cover 310.

[0037] It should be noted that the slide rail 330, the slide table 340 and the driving member can be combined to form a linear module, the driving member can be driven and controlled by a servo motor, and the model of the linear module can be selected according to actual test requirements. The bracket 210 needs to be anti-reflective to avoid affecting the test effect of the module 400 to be tested.

[0038] In some embodiments, a damper is provided at one end of the slide rail 330 close to the test fixture 220 (not shown in the figure, but can be understood by those skilled in the art) to reduce the impact force generated on the slide rail 330 when the slide table 340 moves toward the test fixture 220. The damper can adopt a damper or a reducer in the prior art, and its specific structure and working principle can refer to the prior art, which will not be described in detail here. Since the test standard distance between the light-emitting component 320 and the surface of the module is relatively close, only 3mm, the provision of a damper can prevent the light-emitting component 320 from damaging the surface of the module under the action of excessive impact force, thereby protecting the module.

[0039] In some embodiments, Figure 3 As shown, the light shield 310 includes an upper cover plate 312 and a rectangular frame 313 connected to each other, a first opening 311 is provided on the side of the rectangular frame 313 facing the test fixture 220, the upper cover plate 312 is connected to the side of the rectangular frame 313 away from the first opening 311, and the light emitting member 320 is connected to the side of the upper cover plate 312 facing the test fixture 220. Specifically, the upper cover plate 312 and the rectangular frame 313 are connected by fasteners such as screws, and the height of the rectangular frame 313 is greater than the height of the test fixture 220, so that when the light shield moves downward, it can completely cover the surroundings of the test fixture 220 to prevent light leakage.

[0040] like Figure 5 and Figure 6As shown, the test fixture 220 includes a support member 221 and a cover plate 222. The support member 221 is disposed on the bracket 210. The cover plate 222 has a first end 222a and a second end 222b which are oppositely arranged. The first end 222a of the cover plate 222 is rotatably connected to the support member 221 through a rotating shaft, and the second end 222b of the cover plate 222 is detachably connected to the support member 221. On one side of the support member 221 facing the light-emitting member 320, there is an accommodation groove 221a adapted to the module 400 to be tested. A through hole 222c corresponding to the accommodation groove 221a is provided on the cover plate 222. A connection pin (PIN pin) electrically connected to the module 400 to be tested is disposed in the support member 221 within the accommodation groove 221a. Before the test, the cover plate 222 is opened, so that the second end 222b of the cover plate 222 rotates relative to its first end 222a, and the module 400 to be tested is installed in the accommodation groove 221a of the support member 221, so that the module 400 to be tested is electrically connected to the connection pin, and the shooting end of the module 400 to be tested passes through the through hole 222c and faces the light-emitting member 320, thereby realizing the installation of the module 400 to be tested and facilitating the tester to control the photographing of the module 400 to be tested.

[0041] The test assembly 200 further includes a circuit board 230. The circuit board 230 is located between the bracket 210 and the support member 221, and the connection pin is electrically connected to the circuit board 230. Specifically, the circuit board 230 can be installed and fixed to the bracket 210 through fasteners such as screws. The circuit board 230 can be connected to an external display device to realize data conversion and transmission.

[0042] As Figure 7 shown, a crosshair 222d is provided on the side of the cover plate 222 facing away from the support member 221. The center of the crosshair 222d is located within the accommodation groove 221a and the center of the crosshair 222d is aligned with the center of the light-emitting member 320. When the module 400 to be tested is installed in the accommodation groove 221a, the center of the module surface is aligned with the center of the light-emitting member 320, thereby realizing the positioning between the module 400 to be tested and the light-emitting member 320.

[0043] As Figure 5 shown, a buckle 223 is rotatably provided on the support member 221. The second end 222b of the cover plate 222 is snap-connected to the buckle 223. Before the test, the buckle 223 is opened, and the second end 222b of the cover plate 222 rotates relative to its first end 222a, so that the second end 222b of the cover plate 222 is away from the support member 221 to facilitate the installation of the module 400 to be tested. Then, the cover plate 222 is rotated so that the cover plate 222 covers the accommodation groove 221a, thereby realizing the positioning and installation of the module 400 to be tested.

[0044] For the convenience of description and understanding, the first horizontal direction may be the X-axis shown in the figure, the second horizontal direction may be the Y-axis shown in the figure, and the vertical direction may be the Z-axis shown in the figure.

[0045] As Figure 1 and Figure 2 shown, the housing 100 includes a main body frame 110 in the shape of a cuboid. A top plate 120, a bottom plate 130, a front plate 140, a rear plate 150, a left side plate 160, and a right side plate 170 are provided on the main body frame 110. The top plate 120, the bottom plate 130, the front plate 140, the rear plate 150, the left side plate 160, and the right side plate 170 surround the accommodation cavity 101. The sides of the top plate 120, the bottom plate 130, the front plate 140, the rear plate 150, the left side plate 160, and the right side plate 170 facing the accommodation cavity 101 are all provided as anti-reflection surfaces. Specifically, the top plate 120 and the bottom plate 130 are oppositely arranged in the vertical direction, the front plate 140 and the rear plate 150 are oppositely arranged in the first horizontal direction, and the left side plate 160 and the right side plate 170 are oppositely arranged in the second horizontal direction. The provision of the anti-reflection surfaces can prevent the inner side walls of the housing 100 from reflecting light and affecting the photographing effect of the module 400 to be tested.

[0046] The test assembly 200 is disposed on the bottom plate 130. A control button is provided on the bottom plate 130, and a second opening 141 is provided at one end of the front plate 140 close to the control button. Specifically, the control button may include a start button 131 and a stop button 132. The start button 131 can control the driving member to drive the slide 340 to act and start the test. The stop button 132 is used in an emergency situation where the test needs to be interrupted, for example. By providing the second opening 141, it is convenient for the tester to operate the control button.

[0047] Optionally, feet 111 are provided on the main body frame 110, which can provide good support for the test assembly 200 and the light-emitting assembly, and can also play a certain shock-absorbing effect. A hinge 143 may be provided between the front plate 140 and the left side plate 160, and a handle 142 is provided on the front plate 140 to facilitate the tester to open or close the front plate 140.

[0048] It should be noted that considering cost savings, this application can be used for camera modules with other different external dimensions, and only the matching test fixture 220 and test circuit board 230 need to be replaced. Secondly, the number of module products to be tested simultaneously can also be increased, that is, multiple sets of test assemblies 200 and corresponding light-emitting assemblies are provided in the housing 100 to improve the test efficiency.

[0049] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an" and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing" and "having" are inclusive and thus specify the presence of stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is expressly stated. It should also be understood that additional or alternative steps may be used.

[0050] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms when used herein do not imply an order or sequence. Thus, a first element, component, region, layer or section discussed below may be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0051] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A lightless environment testing device, characterized in that include: The housing (100) is provided with a receiving cavity (101); A test assembly (200) is arranged in the accommodating cavity (101), the test assembly (200) comprising a bracket (210) and a test fixture (220) arranged on the bracket (210), the bracket (210) being arranged on the housing (100), and the test fixture (220) being used to install the module to be tested (400); and A light-proof component (300) is arranged in the accommodating cavity (101), the light-proof component (300) comprises a light-proof cover (310) which is arranged to be lifted relative to the bracket (210), a first opening (311) is arranged on a side of the light-proof cover (310) facing the test fixture (220), a light-emitting component (320) is arranged in the light-proof cover (310), and a shooting end of the test module faces the light-emitting component (320).

2. The lightless environment testing device according to claim 1, wherein, The light-proof component (300) further comprises a slide rail (330), a slide table (340) and a driving member, wherein the slide rail (330) is arranged on the housing (100), the slide table (340) is slidably connected to the slide rail (330), the light-proof cover (310) is arranged on the slide table (340), and the driving member is transmission-connected to the slide table (340) so as to drive the slide table (340) to perform reciprocating lifting motion along the slide rail (330).

3. The lightless environment testing device according to claim 2, characterized in that, A damper is provided at one end of the slide rail (330) close to the test fixture (220) to reduce the impact force generated on the slide rail (330) when the slide table (340) moves toward the test fixture (220).

4. The lightless environment testing device according to claim 1, characterized in that, The light shield (310) comprises an upper cover plate (312) and a rectangular frame (313) which are connected to each other; the first opening (311) is provided on a side of the rectangular frame (313) facing the test fixture (220); the upper cover plate (312) is connected to a side of the rectangular frame (313) facing away from the first opening (311); and the light emitting element (320) is connected to a side of the upper cover plate (312) facing the test fixture (220).

5. The lightless environment testing device according to claim 1, characterized in that, The test fixture (220) comprises a support member (221) and a cover plate (222), wherein the support member (221) is arranged on the bracket (210), and the cover plate (222) has a first end (222a) and a second end (222b) arranged opposite to each other, the first end (222a) of the cover plate (222) is rotatably connected to the support member (221), and the second end (222b) of the cover plate (222) is connected to the support member (221); The support member (221) is provided with a placement groove (221a) adapted to the module to be tested (400) on one side facing the light-emitting member (320), the cover plate (222) is provided with a through hole (222c) corresponding to the placement groove (221a), and the support member (221) is provided with a connection pin electrically connected to the module to be tested (400) in the placement groove (221a).

6. The lightless environment testing device according to claim 5, wherein, The test component (200) further includes a circuit board (230) which is located between the bracket (210) and the support member (221), and the connection pins are electrically connected to the circuit board (230).

7. The lightless environment testing device according to claim 5, wherein, A crosshair (222d) is provided on the cover plate (222), and the center of the crosshair (222d) is located within the placement groove (221a) and the center of the crosshair (222d) is aligned with the center of the light-emitting component (320).

8. The lightless environment testing device according to claim 5, wherein, A buckle (223) is rotatably provided on the support member (221), and the second end (222b) of the cover plate (222) is snap-connected to the buckle (223).

9. The lightless environment testing device according to claim 1, wherein The housing (100) includes a main body frame (110) in the shape of a cuboid. A top plate (120), a bottom plate (130), a front plate (140), a rear plate (150), a left side plate (160) and a right side plate (170) are provided on the main body frame (110). The top plate (120), the bottom plate (130), the front plate (140), the rear plate (150), the left side plate (160) and the right side plate (170) surround the accommodation cavity (101). The sides of the top plate (120), the bottom plate (130), the front plate (140), the rear plate (150), the left side plate (160) and the right side plate (170) facing the accommodation cavity (101) are all provided as anti-reflection surfaces.

10. The lightless environment testing device according to claim 9, characterized in that, The test component (200) is disposed on the bottom plate (130). A control button is provided on the bottom plate (130), and a second opening (141) is provided at one end of the front plate (140) close to the control button.

Images