Black curtain environment test rack and camera module test equipment

Abstract

The utility model discloses a black curtain environment test rack and camera module test equipment, the black curtain environment test rack comprises a rack main body, the rack main body is internally provided with a first cavity used for installing a camera module test assembly, the first cavity is provided with a material inlet / outlet, and the material inlet / outlet is provided with a material outlet. A lifting shading roller shutter is arranged at the position, corresponding to the feeding and discharging port, of the machine frame body. The lifting shading roller shutter can open or close the feeding and discharging port, so that the first cavity is communicated with the outside or the first cavity forms a closed cavity structure. According to the utility model, a black curtain environment can be provided so as to carry out related testing work, the structure is simple, and the manufacturing, installation and maintenance costs are low.

Description

Technical Field

[0001] The utility model relates to optical testing equipment, in particular to a black screen environment testing rack and camera module testing equipment. Background Art

[0002] During and after the manufacturing process of the camera module, various tests are required to ensure the yield rate of the camera module by screening out defective products. When the yield rate drops, it is also possible to promptly detect the problem, diagnose the problem, identify the cause, and implement improvement measures. Among them, some tests require placing the camera module in a dark environment or a low-light environment to check the performance of the camera module under no light or low-light conditions, such as dark current test, noise test, glare test, etc. Among them, the dark current test refers to measuring the current consumption of the camera module in a dark environment, detecting the current stability of the camera module in the absence of light, and whether there is abnormal current leakage; the noise test refers to checking whether the image output by the camera module has excessive noise in a dark environment or a low-light environment; the glare test refers to rotating the camera module in a dark environment and shooting a strong point light source at different angles. The glare effect of the camera module can be analyzed through the captured images to detect whether the lens will produce "glare" when strong light enters the lens.

[0003] In the prior art, one method is to place the test equipment in a darkroom, with a lighting lamp on the frame of the test equipment. The lighting lamp is turned off during the test and turned on when the material is loaded and unloaded. The construction cost of the darkroom is relatively high. Another method is to set a rotating sealed door and an inner cavity on the frame of the test equipment, and make the inner cavity a dark environment by closing the rotating sealed door. However, the rotating sealed door makes the frame structure complicated and inconvenient to open or close, which affects the efficiency of feeding and unloading the camera module during the test. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a black screen environment test rack and camera module test equipment, which can provide a black screen environment to facilitate related testing work, and is easy to use, simple in structure, and has low manufacturing, installation and maintenance costs.

[0005] The utility model provides a black screen environment test rack, comprising a rack main body, wherein a first cavity for installing a camera module test component is provided inside the rack main body, the first cavity has an inlet and outlet, and a lifting light-shielding roller shutter is provided at a position of the rack main body corresponding to the inlet and outlet; the lifting light-shielding roller shutter can open or close the inlet and outlet, so that the first cavity is connected to the outside or the first cavity forms a closed chamber structure.

[0006] Furthermore, the frame body is enclosed by an upper side panel, a lower side panel, a left side panel, a right side panel, a front side panel and a rear side panel to form the first cavity, and the inlet and outlet and the lifting shading roller blind are both arranged on the front side panel.

[0007] Furthermore, the lifting and lowering light-blocking roller blind includes a roller blind drive element, a roller blind transmission assembly, a roller blind shaft, a light-blocking roller blind cloth, a slide rod and two roller blind guide rails. The roller blind drive element drives the roller blind shaft to rotate through the roller blind transmission assembly. The roller blind shaft is arranged on the upper side of the inlet and outlet, and the two roller blind guide rails are respectively located on the left and right sides of the inlet and outlet. The head and tail ends of the light-blocking roller blind cloth are respectively connected to the roller blind shaft and the slide rod, and the light-blocking roller blind cloth is rolled up on the roller blind shaft, and the left and right sides of the slide rod are respectively slidably matched with the two roller blind guide rails.

[0008] Furthermore, the lifting shading roller blind also includes two fixing seats, both of which are located above the material inlet and outlet, and the left and right sides of the roller blind shaft are respectively rotatably matched with the two fixing seats.

[0009] Furthermore, the roller blind transmission assembly includes a driving wheel, a driven wheel and a transmission belt. The driving wheel is fixedly connected to the output shaft of the roller blind driving element, the driven wheel is fixedly connected to one end of the roller blind shaft, and the transmission belt is externally mounted on the driving wheel and the driven wheel.

[0010] Furthermore, the lifting shading roller blind also includes a limiting pressure rod, which is arranged between the roller blind shaft and the roller blind guide rail, and a gap is formed between the limiting pressure rod and the front side plate, and the shading roller blind fabric passes through the gap.

[0011] Furthermore, the lifting shading roller blind also includes a lower limit member, and the lower limit member is located below the inlet and outlet.

[0012] A camera module testing device in the utility model comprises a camera module testing component and a black screen environment testing rack, wherein the camera module testing component is connected to the black screen environment testing rack.

[0013] Furthermore, the camera module test component is a dark current test component, a noise test component or a glare test component.

[0014] Furthermore, the glare test assembly includes a lifting light source component and a rotating jig, the rotating jig is arranged in the first cavity, and the lifting light source component is located above the rotating jig; the lifting light source component includes a point light source emission box and an adjustment mechanism for driving the point light source emission box to rise and fall, the point light source emission box extends into the first cavity and can emit light toward the rotating jig; the rotating jig includes a first mounting bracket, a second mounting bracket, a third mounting bracket, a first driving element, a second driving element and a module positioning seat, the first mounting bracket is fixedly connected to the rack body, the second mounting bracket is movably connected to the first mounting bracket, and the third mounting bracket is movably connected to the second mounting bracket, the first driving element can drive the second mounting bracket to rotate relative to the first mounting bracket with the first axis as the rotation axis, and the second driving element can drive the third mounting bracket to rotate relative to the second mounting bracket with the second axis as the rotation axis, and the first axis and the second axis are perpendicular to each other.

[0015] The beneficial effects of the utility model are:

[0016] (1) The utility model can open the inlet and outlet of the first cavity by raising and lowering the light-shielding roller curtain, so that the first cavity can be connected to the outside. At this time, the camera module can feed or discharge materials into the first cavity through the inlet and outlet; the utility model can close the inlet and outlet by raising and lowering the light-shielding roller curtain, so that the first cavity can form a closed chamber structure. At this time, external light cannot enter the first cavity, and the interior of the first cavity becomes a black environment. It can be applied to different equipment that needs to perform testing work in a black environment, so that the camera module test component can perform related testing work in a black environment, such as dark current test, noise test, glare test, etc.

[0017] (2) The utility model has a simple structure and low manufacturing, installation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention is described with the following drawings:

[0019] Figure 1 This is one of the structural diagrams of the camera module testing equipment of the present utility model;

[0020] Figure 2 This is the second structural diagram of the camera module testing equipment of the present invention (the left side panel and the rear side panel are omitted);

[0021] Figure 3 This is a front view of the camera module testing device of the present invention;

[0022] Figure 4 for Figure 3AA cross-section diagram;

[0023] Figure 5 for Figure 4 BB cross-section diagram;

[0024] Figure 6 This is a schematic diagram of the structure of the lifting shading roller blind and the front side panel of the utility model;

[0025] Figure 7 This is the third structural diagram of the camera module testing equipment of the present invention (with the mask plate hidden);

[0026] Figure 8 This is a schematic diagram of the structure of the upper side plate and the lifting light source component of the present invention;

[0027] Figure 9 This is a schematic structural diagram of the cooperation between the lower side plate and the rotating fixture of the present invention.

[0028] The following are marked in the accompanying drawings:

[0029] 1-frame body, 101-feeding and discharging port, 102-lifting blackout roller blind, 1021-rolling blind drive element, 1022-rolling blind transmission assembly, 1023-rolling blind shaft, 1024-blackout roller blind fabric, 1025-sliding rod, 1026-rolling blind guide rail, 1027-fixing seat, 1028-limiting pressure rod, 1029-lower limiting member, 103-upper side panel, 104-lower side panel, 105-left side panel, 106-right side panel, 107-front side panel, 108-rear side panel, 109-shield panel, 110-position sensor;

[0030] 2- glare test assembly, 201- lifting light source component, 2011- point light source emission box, 2012- fourth mounting bracket, 2013- guide rod, 2014- lead screw, 2015- handle, 2016- nut seat, 202- rotating fixture, 2021- first mounting bracket, 2022- second mounting bracket, 2023- third mounting bracket, 2024- first driving element, 2025- second driving element, 2026- module positioning seat. DETAILED DESCRIPTION

[0031] The technical solution of the present utility model is described in detail below with reference to the accompanying drawings and embodiments.

[0032] like Figures 1-9As shown, a black screen environment test rack in this embodiment includes a rack body 1, a first cavity for installing a camera module test component is provided inside the rack body 1, the first cavity has an inlet and outlet 101, and the rack body 1 is provided with a lifting light-shielding roller shutter 102 at a position corresponding to the inlet and outlet 101; the lifting light-shielding roller shutter 102 can open or close the inlet and outlet 101, so that the first cavity is connected to the outside or the first cavity forms a closed chamber structure.

[0033] By raising and lowering the light-shielding roller shutter 102 to open the inlet and outlet port 101, the first cavity can be connected to the outside. At this time, the camera module can feed or discharge materials into or out of the first cavity through the inlet and outlet port 101; by raising and lowering the light-shielding roller shutter 102 to close the inlet and outlet port 101, the first cavity can form a closed chamber structure. At this time, external light cannot enter the first cavity, and the interior of the first cavity becomes a black environment. It can be applied to different equipment that needs to perform testing work in a black environment, so that the camera module test component can perform related testing work in a black environment, such as dark current test, noise test, glare test, etc. Among them, the dark current test refers to measuring the current consumption of the camera module in a dark environment, detecting the current stability of the camera module when there is no light, and whether there is abnormal current leakage; the noise test refers to checking whether there is excessive noise in the image output by the camera module in a dark environment or low-light environment; the glare test refers to rotating the camera module and shooting strong point light sources at different angles in a dark environment. The glare effect of the camera module can be analyzed through the captured images, which is used to detect whether the lens will produce "glare" when strong light enters the lens.

[0034] The lifting shading roller blind 102 is easy to use. It is driven by a motor and can be automatically raised and lowered by pressing an operating switch. Compared with a revolving door, the lifting shading roller blind 102 does not occupy external space.

[0035] In this embodiment, the frame body 1 is enclosed by an upper side panel 103, a lower side panel 104, a left side panel 105, a right side panel 106, a front side panel 107 and a rear side panel 108 to form the first cavity, and the inlet and outlet 101 and the lifting shading roller shutter 102 are both arranged on the front side panel 107.

[0036] The upper side panel 103, lower side panel 104, left side panel 105, right side panel 106, front side panel 107, and rear side panel 108 form a hexahedron, the interior of which is a first cavity. The hexahedron encloses the first cavity, and the front side panel 107 is provided with an inlet and outlet port 101 and a lifting light-shielding roller shutter 102, making the black screen environment test rack of this embodiment simple in structure and low in manufacturing, installation, and maintenance costs.

[0037] In this embodiment, the lifting and lowering light-blocking roller blind 102 includes a roller blind drive element 1021, a roller blind transmission assembly 1022, a roller blind shaft 1023, a light-blocking roller blind cloth 1024, a slide rod 1025 and two roller blind guide rails 1026. The roller blind drive element 1021 drives the roller blind shaft 1023 to rotate through the roller blind transmission assembly 1022. The roller blind shaft 1023 is arranged on the upper side of the inlet and outlet 101. The two roller blind guide rails 1026 are respectively located on the left and right sides of the inlet and outlet 101. The head and tail ends of the light-blocking roller blind cloth 1024 are respectively connected to the roller blind shaft 1023 and the slide rod 1025, and the light-blocking roller blind cloth 1024 is rolled up on the roller blind shaft 1023. The left and right sides of the slide rod 1025 are respectively slidably matched with the two roller blind guide rails 1026.

[0038] The roller blind drive element 1021 is a motor. The motor's output shaft drives the roller blind shaft 1023 in forward or reverse rotation through the roller blind transmission assembly 1022, thereby retracting or unretracting the shade roller blind 1024. The left and right sides of the slide rod 1025 slide into the slide grooves of the roller blind guide rail 1026. After the shade roller blind 1024 is retracted onto the roller blind shaft 1023, it no longer blocks the inlet and outlet 101. The slide rod 1025 also moves with the shade roller blind 1024 above the inlet and outlet 101, thereby raising and lowering the shade roller blind 102 and opening the inlet and outlet 101. After the shade roller blind 1024 is unrolled, the slide rod 1025 slides downward along the roller blind guide rail 1026 due to gravity. This movement of the slide rod 1025 simultaneously drives the shade roller blind 1024, thereby raising and lowering the shade roller blind 102 and closing the inlet and outlet 101.

[0039] In this embodiment, the lifting light-blocking roller blind 102 further includes two fixing seats 1027 , both of which are located above the material inlet and outlet 101 , and the left and right sides of the roller blind shaft 1023 are respectively rotatably engaged with the two fixing seats 1027 .

[0040] In this embodiment, the roller blind drive assembly 1022 includes a driving pulley, a driven pulley, and a transmission belt. The driving pulley is fixedly connected to the output shaft of the roller blind drive element 1021, the driven pulley is fixedly connected to one end of the roller blind shaft 1023, and the transmission belt is externally mounted on the driving and driven pulleys. The driving pulley, driven pulley, and transmission belt form a belt drive kinematic pair, which can further simplify the structure of the dark curtain environment test rack and reduce manufacturing, installation, and maintenance costs.

[0041] In this embodiment, the lifting light-shielding roller blind 102 further includes a limiting pressure rod 1028, which is disposed between the roller blind shaft 1023 and the roller blind guide rail 1026. A gap is formed between the limiting pressure rod 1028 and the front side plate 107, through which the light-shielding roller blind fabric 1024 passes. The limiting pressure rod 1028 is a cylindrical rod, and the light-shielding roller blind fabric 1024 is preferably inserted into a sliding groove of the roller blind guide rail 1026 in a sliding fit. The limiting pressure rod 1028 can constrain the position and direction of the light-shielding roller blind fabric 1024, thereby preventing friction damage between the light-shielding roller blind fabric 1024 and the sliding groove of the roller blind guide rail 1026.

[0042] In this embodiment, the liftable light-blocking roller blind 102 further includes a lower stopper 1029, which is located below the inlet / outlet 101. When the slide bar 1025 abuts the lower stopper 1029, it indicates that the slide bar 1025 has moved into position and completely closes the inlet / outlet 101. Furthermore, the lower stopper 1029 blocks the gap between the slide bar 1025 and the inlet / outlet 101, preventing light from entering the first cavity between the inlet / outlet 101 and the slide bar 1025. Position sensors 110 can be provided on both sides of the lower stopper 1029 to detect whether the slide bar 1025 has moved into position.

[0043] In this embodiment, a camera module test device includes a camera module test assembly and a dark screen environment test rack. The camera module test assembly is connected to the dark screen environment test rack. The camera module test assembly is a dark current test assembly, a noise test assembly, or a glare test assembly 2. This embodiment is described using the glare test assembly 2 as an example.

[0044] In this embodiment, the glare testing assembly 2 includes a lifting light source component 201 and a rotating jig 202. The rotating jig 202 is arranged in the first cavity, and the lifting light source component 201 is located above the rotating jig 202. The lifting light source component 201 includes a point light source transmitting box 2011 and an adjustment mechanism for driving the point light source transmitting box 2011 to rise and fall. The point light source transmitting box 2011 extends into the first cavity and can emit light toward the rotating jig 202.

[0045] The rotating jig 202 includes a first mounting bracket 2021, a second mounting bracket 2022, a third mounting bracket 2023, a first drive element 2024, a second drive element 2025, and a module positioning seat 2026. The first mounting bracket 2021 is fixedly connected to the frame body 1, the second mounting bracket 2022 is movably connected to the first mounting bracket 2021, and the third mounting bracket 2023 is movably connected to the second mounting bracket. The first drive element 2024 can drive the second mounting bracket 2022 to rotate relative to the first mounting bracket 2021 about a first axis, and the second drive element 2025 can drive the third mounting bracket 2023 to rotate relative to the second mounting bracket 2022 about a second axis. The first and second axes are perpendicular to each other. The first axis is in the left-right direction, and the second axis is in the front-back direction. The first and second drive elements 2024 and 2025 are both motors. Motor drive eliminates the need for manual angle adjustment, resulting in high efficiency.

[0046] The adjustment mechanism includes a fourth mounting bracket 2012, a guide rod 2013, a screw 2014, a handle 2015 and a nut seat 2016. The guide rod 2013 is fixedly mounted on the fourth mounting bracket 2012, and the screw 2014 is rotatably mounted on the fourth mounting bracket 2012. The axes of the guide rod 2013 and the screw 2014 are both along the up and down directions. The handle 2015 is connected to the screw 2014, the nut seat 2016 is threadedly engaged with the screw 2014, and the nut seat 2016 is slidingly engaged with the guide rod 2013. The guide rod 2013 makes the nut seat 2016 only have the freedom to move in the up and down directions. By rotating the handle 2015, the screw 2014 can be driven to rotate, thereby driving the nut seat 2016 to move in the up and down directions.

[0047] The point light source transmitting box 2011 is fixedly connected to the nut seat 2016, and a through hole that conforms to the point light source transmitting box 2011 is provided on the upper side plate 103. The upper part of the point light source transmitting box 2011 is located above the upper side plate 103, and the lower part of the point light source transmitting box 2011 passes through the through hole and extends into the first cavity. In order to ensure that the black screen environment is lightless, a plurality of mask plates 109 can also be provided above the upper side plate 103. The upper side plate 103 and the plurality of mask plates 109 enclose a second cavity, and one of the mask plates 109 is provided in an openable and closable form. When testing the camera modules of the same batch, after the height position of the point light source transmitting box 2011 is adjusted by the adjustment mechanism, it is generally not changed, so manual adjustment is adopted.

[0048] During the glare test, after opening the inlet and outlet 101 and securing the camera module to the module positioning seat 2026, the inlet and outlet 101 is closed by raising and lowering the light-blocking roller shutter 102, forming a closed chamber structure in the first cavity. At this point, external light cannot enter the first cavity, and the interior of the first cavity becomes a dark environment. Then, the first and second drive elements 2024 and 2025 drive the camera module to rotate about the first and second axes, capturing the strong point light source emitted by the point light source emission box 2011 from different angles. The captured images can be analyzed to obtain the glare effect of the camera module, which is used to detect whether the lens will produce "glare" when strong light enters the lens. After the test is completed, the inlet and outlet 101 is opened to remove the camera module and place the next camera module to be tested.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not limiting. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A dark environment test rack, characterized by: It includes a frame body, a first cavity for installing a camera module test component is provided inside the frame body, the first cavity has an inlet and outlet, and a lifting light-shielding roller shutter is provided at a position of the frame body corresponding to the inlet and outlet; the lifting light-shielding roller shutter can open or close the inlet and outlet, so that the first cavity is connected to the outside or the first cavity forms a closed chamber structure.

2. The black screen environment test rack according to claim 1, characterized in that: The frame body is enclosed by an upper side plate, a lower side plate, a left side plate, a right side plate, a front side plate and a rear side plate to form the first cavity, and the inlet and outlet and the lifting shading roller blind are both arranged on the front side plate.

3. The black screen environment test rack according to claim 2, characterized in that: The lifting light-blocking roller blind includes a roller blind drive element, a roller blind transmission assembly, a roller blind shaft, a light-blocking roller blind cloth, a slide rod and two roller blind guide rails. The roller blind drive element drives the roller blind shaft to rotate through the roller blind transmission assembly. The roller blind shaft is arranged on the upper side of the inlet and outlet. The two roller blind guide rails are respectively located on the left and right sides of the inlet and outlet. The head and tail ends of the light-blocking roller blind cloth are respectively connected to the roller blind shaft and the slide rod, and the light-blocking roller blind cloth is rolled up on the roller blind shaft. The left and right sides of the slide rod are respectively slidably matched with the two roller blind guide rails.

4. The black screen environment test rack according to claim 3, characterized in that: The lifting shading roller blind further comprises two fixing seats, both of which are located above the material inlet and outlet ports, and the left and right sides of the roller blind shaft are respectively rotatably engaged with the two fixing seats.

5. The black screen environment test rack according to claim 3, characterized in that: The roller blind transmission assembly includes a driving wheel, a driven wheel and a transmission belt. The driving wheel is fixedly connected to the output shaft of the roller blind driving element, the driven wheel is fixedly connected to one end of the roller blind shaft, and the transmission belt is externally mounted on the driving wheel and the driven wheel.

6. The black screen environment test rack according to claim 3, characterized in that: The lifting shading roller blind further includes a limiting pressure rod, which is arranged between the roller blind shaft and the roller blind guide rail, and a gap is formed between the limiting pressure rod and the front side plate, and the shading roller blind fabric passes through the gap.

7. The black screen environment test rack according to claim 3, characterized in that: The lifting shading roller blind also includes a lower limit member, and the lower limit member is located below the inlet and outlet.

8. A camera module testing device, characterized in that: It comprises a camera module test component and a black screen environment test rack as described in any one of claims 1 to 7, and the camera module test component is connected to the black screen environment test rack.

9. The camera module testing device according to claim 8, wherein: The camera module test component is a dark current test component, a noise test component or a glare test component.

10. The camera module testing device according to claim 9, wherein: The glare test assembly includes a lifting light source component and a rotating jig, the rotating jig is arranged in the first cavity, and the lifting light source component is located above the rotating jig; the lifting light source component includes a point light source emission box and an adjustment mechanism for driving the point light source emission box to rise and fall, the point light source emission box extends into the first cavity and can emit light toward the rotating jig; the rotating jig includes a first mounting bracket, a second mounting bracket, a third mounting bracket, a first driving element, a second driving element and a module positioning seat, the first mounting bracket is fixedly connected to the rack body, the second mounting bracket is movably connected to the first mounting bracket, and the third mounting bracket is movably connected to the second mounting bracket, the first driving element can drive the second mounting bracket to rotate relative to the first mounting bracket with the first axis as the rotation axis, and the second driving element can drive the third mounting bracket to rotate relative to the second mounting bracket with the second axis as the rotation axis, and the first axis and the second axis are perpendicular to each other.

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