Test fixture

Abstract

The utility model discloses a test fixture. The test fixture comprises a lamp box, a clamp and a bracket, a lamp source is arranged in the lamp box, and a light emitting area is arranged on the top surface of the lamp box; the lamp box is provided with a light outlet area, the clamp is installed on the support and located above the light outlet area, and the support is movably connected with the top of the lamp box so that the relative position of the clamp and the light outlet area can be changed. The test fixture can be used for testing a camera, especially for testing a short-distance camera, and the test quality of the short-distance camera can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing, in particular to a test fixture for a camera. BACKGROUND

[0002] In the related art, camera test equipment is mostly built for medium and long distance camera testing and cannot be compatible with short distance camera testing.

[0003] The test distance required by a macro camera is generally about 1-5 cm. If a test device built for medium and long distance camera testing is used for testing, the test product itself will block the test environment light, affecting the shooting, and thus causing test errors. UTILITARIAN CONTENT

[0004] The purpose of the present application is to provide a test fixture which can be used for testing a camera, in particular a short distance camera, and can improve the test quality of a short distance camera.

[0005] To solve the above technical problems, the present application provides a test fixture comprising a light box, a clamp and a bracket.

[0006] The inside of the light box is provided with a light source, and the top surface of the light box is provided with a light emitting area.

[0007] The clamp is installed on the bracket, and the clamp is located above the light emitting area. The bracket is movably connected with the top of the light box to change the relative position of the clamp and the light emitting area.

[0008] When the above test fixture is used for testing, the test product can be fixed by the clamp, the relative position of the test product fixed by the clamp and the light emitting area can be adjusted by moving the bracket relative to the light box, the test card used for testing can be placed on the top surface of the light box, the light emitted by the light source in the light box can be emitted through the light emitting area, the environment light required for testing can be simulated, and the camera of the test product can shoot the test card to test the camera quality. The test fixture sets the light box below the clamp, so that the light emitted by the light source is emitted upward, so that the test product fixed by the clamp will not block the test light, and the test quality and test effect of the camera, in particular the short distance camera, can be improved.

[0009] In an implementable scheme, the bracket comprises a first bracket assembly and a second bracket assembly, the first bracket assembly is slidably connected with the light box in a first direction, the second bracket assembly is slidably connected with the first bracket assembly in a second direction, the clamp is installed on the second bracket assembly, the first direction is parallel to the top surface of the light box, and the second direction is perpendicular to the top surface of the light box.

[0010] In an embodiment, the top of the light box is provided with a slide rail extending along the first direction, the first frame assembly comprises a first frame rod and a sliding block connected to the bottom of the first frame rod, and the sliding block is in sliding connection with the slide rail.

[0011] In an embodiment, the second frame assembly comprises a sliding sleeve and a second frame rod, the first frame rod extends along the second direction, the sliding sleeve is sleeved on the first frame rod, one end of the second frame rod is connected with the sliding sleeve, and the other end of the second frame rod is connected with the clamp.

[0012] In an embodiment, the test fixture comprises a first positioning component capable of limiting the relative position of the first frame assembly and the light box, and / or the test fixture comprises a second positioning component capable of limiting the relative position of the second frame assembly and the first frame assembly.

[0013] In an embodiment, the clamp and the second frame assembly are connected through a spherical hinge.

[0014] In an embodiment, the test fixture comprises a third positioning component capable of limiting the relative position of the clamp and the second frame assembly.

[0015] In an embodiment, the top surface of the light box is provided with a limiting groove corresponding to the position of the light emitting area.

[0016] In an embodiment, the test fixture comprises a uniform light plate arranged in the light emitting area, and the outer surface of the uniform light plate is arranged below the top surface of the light box to form the limiting groove.

[0017] In an embodiment, the test fixture further comprises a control board arranged in the light box, the control board being in electrical connection with the light source, and an operation panel in communication connection with the control board, the operation panel being used to transmit a signal for controlling the working parameters of the light source to the control board. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic diagram of a test fixture according to an embodiment of the present application.

[0019] REFERENCE SIGNS:

[0020] Light box 10, top surface 11, light emitting area 111, uniform light plate 12, slide rail 13;

[0021] Clamp 20;

[0022] Support 30, first bracket assembly 31, first bracket rod 311, sliding block 312, second bracket assembly 32, second bracket rod 321, sliding sleeve 322;

[0023] First positioning component 41, spherical hinge 50, operation panel 60. DETAILED DESCRIPTION

[0024] In order to make the person skilled in the art better understand the scheme of the present application, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0025] The ordinal numbers first, second, etc. used herein are used to distinguish different components with the same name, and do not represent a specific order or primary and secondary relationship.

[0026] The orientation words top (up), bottom (down), etc. used herein are defined according to the positions of the components in the drawings and the mutual positional relationship between the components, and the use of the orientation words is only to express the clarity and convenience of the technical scheme. It should be understood that the orientation words used herein should not limit the protection scope of the present application.

[0027] Please refer to Figure 1 , Figure 1 The structure schematic diagram of a test fixture provided in an embodiment of the present application is shown.

[0028] The test fixture provided in the present embodiment is used for testing a camera, in particular, for testing a short-distance camera, to test the quality influencing factors such as resolving power, visual angle, distortion, dynamic range of the camera. The short-distance camera can be a macro camera. For example, the test distance required by the macro camera is about 1-5 cm. The test distance required by the short-distance camera can be set according to the actual application needs, for example, it can be about 1-10 cm, or about 1-20 cm.

[0029] As shown in Figure 1 , the test fixture for the camera includes a light box 10, a clamp 20 and a support 30.

[0030] The inside of the light box 10 is provided with a light source (not shown in the figure), and the top surface 11 of the light box 10 is provided with a light emitting area 111. The light emitted by the light source can be emitted through the light emitting area 111, which is used to provide the light environment required for testing. It can be understood that the top surface 11 of the light box 10 has light transmittance in the light emitting area 111.

[0031] The clamp 20 is mounted on the support 30, and the clamp 20 is located above the light emitting area 111. The support 30 is movably connected to the top of the light box 10, so as to change the relative position of the clamp 20 and the light emitting area 111. Here, the top of the light box 10 refers to the area close to the top surface 11 of the light box 10, including but not limited to the top surface 11, and can include the side wall area close to the top surface 11, etc.

[0032] The clamp 20 is used to fix the test product, and the test product is provided with a camera to be tested. For example, the test product can be a mobile phone prototype provided with a camera to be tested.

[0033] When the test jig is used for testing, the test product can be fixed by the clamp 20, the relative position of the test product fixed by the clamp 20 and the light emitting area 111 can be adjusted by moving the support 30 relative to the light box 10, and the test card for testing can be placed on the top surface 11 of the light box 10. The light emitted by the light source in the light box 10 can be emitted through the light emitting area 111 to simulate the ambient light required for testing, and the camera of the test product can take pictures of the test card to test the camera quality. The test jig is provided with the light box 10 below the clamp 20, so that the light emitted by the light source is emitted upward, and the test product fixed by the clamp 20 will not block the test light, which can improve the test quality and test effect of the camera, especially the short distance camera.

[0034] In some embodiments, the support 30 can include a first frame assembly 31 and a second frame assembly 32. The first frame assembly 31 is slidably connected to the light box 10 in a first direction D1, the second frame assembly 32 is slidably connected to the first frame assembly 31 in a second direction D2, and the clamp 20 is mounted on the second frame assembly 32. The first direction D1 is parallel to the top surface 11 of the light box 10, and the second direction D2 is perpendicular to the top surface 11 of the light box 10.

[0035] In this way, the first frame assembly 31 can drive the second frame assembly 32 and the clamp 20 connected to the second frame assembly 32 to move in the first direction D1, that is, to drive the clamp 20 to move in a plane parallel to the top surface 11 of the light box 10, so as to adjust the position of the clamp 20 in the plane parallel to the top surface 11. The second frame assembly 32 can drive the clamp 20 to move in the second direction D2 perpendicular to the top surface 11, so as to adjust the distance between the clamp 20 and the top surface 11. Through the movement of the first frame assembly 31 and the second frame assembly 32, the relative position between the clamp 20 and the light emitting area 111 can be adjusted, so that the relative position between the test product fixed by the clamp 20 and the test card can be adjusted to meet the different position requirements between the test product and the test card during testing.

[0036] In actual application, after placing the light box 10, the top surface 11 of the light box 10 is generally parallel to the horizontal plane, and the second direction D2 perpendicular to the top surface 11 can be understood as the vertical direction.

[0037] In specific implementation, the shape of the light box 10 can be flexibly set as needed, for example, can be set as Figure 1 the cuboid structure shown in the figure, can also be a cylindrical structure, or a multi-prism structure, etc.

[0038] Taking the cuboid structure of the light box 10 shown in the figure as an example, the first direction D1 in which the first frame assembly 31 slides relative to the light box 10 is the length direction of the light box 10, and the second direction D2 in which the second frame assembly 32 slides relative to the first frame assembly 32 is the height direction of the light box 10. Figure 1

[0039] In other implementation examples, the first direction D1 in which the first frame assembly 31 slides relative to the light box 10 can also be the width direction of the light box 10, and the second direction D2 in which the second frame assembly 32 slides relative to the first frame assembly 32 can have a certain angle with the height direction of the light box 10, as long as it can meet the requirements of adjusting the position of the clamp 20 in the plane parallel to the top surface 11 and adjusting the distance between the clamp 20 and the top surface 11.

[0040] In specific implementation, a slide 13 is arranged at the top of the light box 10, the slide 13 extends along the first direction D1, the first frame assembly 31 includes a first frame rod 311 and a sliding block 312, the sliding block 312 is connected to the bottom of the first frame rod 311, and the sliding block 312 is in sliding connection with the slide 13. In this way, through the sliding cooperation of the sliding block 312 and the slide 13, the movement of the first frame rod 311 along the first direction D1 is realized.

[0041] In some embodiments, the slide 13 can be arranged on the top surface 11 of the light box 10. In other embodiments, the slide 13 can also be arranged on the side wall surface of the light box 10, close to the top surface 11.

[0042] In some embodiments, the slide 13 is in the form of a sliding rail, as shown in the figure. Figure 1

[0043] The sliding rail as the slide 13 can be fixedly connected with the light box 10, and the sliding rail and the light box 10 can be connected by bonding, or fasteners such as bolts, or welding, or clamping, etc.

[0044] ​​In other embodiments, the slide 13 may also be a groove structure. For example, the slide 13 is still provided on the top surface 11 of the light box 10, and the slide 13 is a groove structure formed by recessing from the top surface 11 to the bottom. In this way, the slide 13 and the light box 10 are an integral structure, which helps to simplify the assembly process; or, the slide 13 may be a component with a groove that is independent of the light box 10 and is connected to the light box 10 by means of bonding, welding or riveting.

[0045] In practice, the slider 312 and the first support rod 311 can be two relatively independent components that are then connected together; or the slider 312 and the first support rod 311 can be an integral structural component.

[0046] In some implementations, the test fixture also includes a first positioning component 41, which is capable of limiting the relative position of the first frame assembly 31 and the light box 10.

[0047] As set up above, after adjusting the positions of the second component 32 and the fixture 20 by moving the first component 31 relative to the light box 10, the relative position of the first component 31 and the light box 10 can be limited by the first positioning component 41, so as to avoid the first component 31 from affecting the test due to movement, which is conducive to improving the reliability and effectiveness of the test results.

[0048] In a specific implementation, the first positioning component 41 can be a screw or a set screw, and the slider 312 can be provided with a threaded hole that matches the screw or set screw. The screw or set screw is threadedly connected to the threaded hole of the slider 312. By rotating the screw or set screw, the screw or set screw can move closer to or away from the slide rail 13.

[0049] like Figure 1 As shown, after adjusting the position of the first support rod 311 by moving the slider 312 relative to the slide rail 13, the screw or set screw can be screwed in towards the slide rail 13 to press against the slide rail 13, thereby limiting the relative position of the slider 312 and the slide rail 13, and thus limiting the relative position of the first support rod 311 and the light box 10. When it is necessary to readjust the position of the first support rod 311, the screw or set screw can be screwed out away from the slide rail 13 to disengage the screw or set screw from the slide rail 13, thereby releasing the position restriction on the slider 312, allowing the slider 312 to move along the slide rail 13 with the first support rod 311.

[0050] In a specific implementation, the second frame assembly 32 includes a second frame rod 321 and a sliding sleeve 322. The first frame rod 311 extends along the second direction D2, and the sliding sleeve 322 is slidably sleeved outside the first frame rod 311. One end of the second frame rod 321 is connected to the sliding sleeve 322, and the other end of the second frame rod 321 is connected to the clamp 20.

[0051] In this way, the second frame 321 and the clamp 20 are moved along the second direction D2 by the sliding of the sliding sleeve 322 along the first frame 311. The cooperation structure of the second frame assembly 32 and the first frame assembly 31 is simple and easy to implement, and has high reliability.

[0052] The first frame 311 can have a cylindrical structure, facilitating the sliding of the sliding sleeve 322 along the first frame 311.

[0053] In some embodiments, the sliding sleeve 322 can include two sleeve portions arranged at an angle, for example, the axes of the two sleeve portions can be arranged vertically, one sleeve portion is sleeved on the outside of the first frame 311, and the other sleeve portion is used for plug-in cooperation with the second frame 321. In this way, the sliding sleeve 322 has a roughly three-way joint structure, as shown in Figure 1

[0054] In other embodiments, the sliding sleeve 322 can only have one sleeve portion for sliding cooperation with the first frame 311, and the sliding sleeve 322 and the second frame 321 can be connected by screwing, welding, clamping or the like. In other embodiments, the sliding sleeve 322 and the second frame 321 can also be provided as an integral structure.

[0055] In a specific implementation, the extension direction of the second frame 321 is parallel to the top surface 11 of the light box 10 and is arranged at an angle to the first frame 311. For example, the second frame 321 can be arranged vertically to the first frame 311, and one end of the second frame 321 for connecting the clamp 20 is located above the light emitting area 111.

[0056] In other implementations, the second frame 321 can have a telescopic rod structure, so that the relative position of the clamp 20 and the light emitting area 111 can be further adjusted by the extension and retraction of the second frame 321.

[0057] In some embodiments, the test fixture further includes a second positioning component (not shown in the figure), which can limit the relative position of the second frame assembly 32 and the first frame assembly 31.

[0058] As described above, after the second frame assembly 32 is moved to the required position relative to the first frame assembly 31 along the second direction D2, the relative position of the second frame assembly 32 and the first frame assembly 31 can be limited by the second positioning component, avoiding the influence of the movement of the second frame assembly 32 on the test, and facilitating to improve the reliability and effectiveness of the test results.

[0059] ​In a specific implementation, the second positioning component can also be a screw or a jackscrew. A threaded hole matched with the screw or the jackscrew can be arranged on the sliding sleeve 322 of the second frame assembly 32. The screw or the jackscrew is threadedly connected to the threaded hole of the sliding sleeve 322. By rotating, the screw or the jackscrew can be close to or away from the first frame rod 311. After adjusting the position of the second frame rod 321 in the second direction D2 by moving the sliding sleeve 322, the screw or the jackscrew can be screwed in the direction close to the first frame rod 311, so that the screw or the jackscrew abuts against the first frame rod 311, thereby limiting the relative position of the sliding sleeve 322 and the first frame rod 311, and further limiting the position of the second frame rod 321. When it is necessary to adjust the position of the second frame rod 321 again, the screw or the jackscrew is rotated in the reverse direction, so that the screw or the jackscrew is separated from the first frame rod 311, and the position limitation on the sliding sleeve 322 is released.

[0060] In some embodiments, the clamp 20 and the second frame assembly 32 can be connected through the ball hinge 50. In this way, the clamp 20 can be adjusted in position by rotating, facilitating the angle adjustment between the fixed test product and the test chart, facilitating the simulation of the shooting of the camera under different use angles, and adapting to the test requirements under different conditions to perform more comprehensive image quality tests.

[0061] The ball hinge 50 can adopt a mature ball hinge connection structure, which is not described herein again. The outer surface of the ball hinge 50 structure can be provided with a scale to facilitate the test personnel to know the rotation angle of the clamp 20.

[0062] In a specific implementation, the test fixture can further be provided with a third positioning component capable of limiting the relative position of the clamp 20 and the second frame assembly 32. In this way, after the angle of the clamp 20 is adjusted, the position of the clamp 20 can be limited by the third positioning component, so as to ensure the reliability and effectiveness of the test results.

[0063] The third positioning component can be the screw or the jackscrew structure as the first positioning component 41 or the second positioning component.

[0064] In some embodiments, the top surface 11 of the light box 10 has a limiting groove corresponding to the position of the light emitting area 111. The limiting groove can facilitate the positioning of the test chart. During the test, the test chart can be placed in the limiting groove without the need of other additional structures for positioning the test chart. The combination of the test chart and the light box 10 can avoid the position of the test product from blocking or interfering with the light source, and can avoid the problem of the close shooting distance between the test product and the test chart affecting the shooting results.

[0065] In a specific implementation, the test fixture includes the uniform light plate 12 arranged in the light emitting area. The outer surface of the uniform light plate 12 is arranged lower than the top surface 11 of the light box 10 to form the limiting groove.

[0066] The light rays emitted by the light source in the light box 10 can be uniformly processed by the uniform light plate 12 to achieve the required uniformity of the test. At the same time, the use of the uniform light plate 12 arranged below the top surface 11 can directly form a limiting groove for placing the test card, and the structure is simple.

[0067] In a specific implementation, the light source in the light box 10 can include a plurality of lamp beads, and the plurality of lamp beads are uniformly arranged in the light box 10. In combination with the uniform light plate 12, a light environment with uniformity meeting the test requirements can be provided.

[0068] In some embodiments, the test fixture further includes a control board and an operation panel 60. The control board is arranged in the light box 10, and the control board is electrically connected with the light source in the light box 10. The operation panel 60 is in communication connection with the control board, and the operation panel 60 is used to transmit a signal for controlling the working parameters of the light source to the control board. In this way, the working parameters of the light source in the light box 10 can be adjusted through the operation panel 60 to simulate different test light environments.

[0069] The working parameters of the light source can include color temperature, illumination intensity, etc.

[0070] The operation panel 60 can be arranged on the outer side wall of the light box 10 to facilitate the operation of the tester.

[0071] The principles and implementation modes of the present application are described by applying specific examples in this paper, and the above examples are only used to help understand the method and its core idea of the present application. It should be noted that for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A test fixture, characterized by, The test fixture comprises a light box, a clamp and a support; The light box is internally provided with a light source, and a top surface of the light box is provided with a light emitting area; The clamp is mounted on the support, and the clamp is located above the light emitting area. The support is movably connected with the top of the light box to change the relative position of the clamp and the light emitting area.

2. The test fixture of claim 1, wherein, The support comprises a first frame assembly and a second frame assembly. The first frame assembly is slidably connected with the light box in a first direction. The second frame assembly is slidably connected with the first frame assembly in a second direction. The clamp is mounted on the second frame assembly. The first direction is parallel to the top surface of the light box. The second direction is perpendicular to the top surface of the light box.

3. The test fixture of claim 2, wherein, The top of the light box is provided with a slide rail extending in the first direction. The first frame assembly comprises a first frame rod and a sliding block. The sliding block is connected to the bottom of the first frame rod and slidably connected with the slide rail.

4. The test fixture of claim 3, wherein, The second frame assembly comprises a sliding sleeve and a second frame rod. The first frame rod extends in the second direction. The sliding sleeve is slidably sleeved on the first frame rod. One end of the second frame rod is connected with the sliding sleeve, and the other end of the second frame rod is connected with the clamp.

5. The test fixture of claim 2, wherein, The test fixture comprises a first positioning component capable of limiting the relative position of the first frame assembly and the light box; and / or the test fixture comprises a second positioning component capable of limiting the relative position of the second frame assembly and the first frame assembly.

6. The test fixture of claim 2, wherein, The clamp and the second frame assembly are connected through a spherical hinge.

7. The test fixture of claim 6, wherein, The test fixture comprises a third positioning component capable of limiting the relative position of the clamp and the second frame assembly.

8. The test fixture of any of claims 1-7, wherein, The top surface of the light box is provided with a limiting groove corresponding to the position of the light emitting area.

9. The test fixture of claim 8, wherein, The test fixture comprises a uniform light plate arranged in the light emitting area. An outer surface of the uniform light plate is arranged below the top surface of the light box to form the limiting groove.

10. The test fixture of any one of claims 1-7, wherein, The test fixture further comprises a control board and an operation panel. The control board is arranged in the light box and electrically connected with the light source. The operation panel is communicatively connected with the control board and used to transmit a signal for controlling the working parameters of the light source to the control board.

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