Camera module testing device

Abstract

The utility model discloses a camera module testing device, comprising a light source device and a clamping mechanism, the light source device comprises a bearing frame and a light source assembly, the light source assembly comprises a housing, a control circuit board and a plurality of LED lamp beads, the housing is installed at the top end of the bearing frame, the control circuit board is arranged in the housing, the plurality of LED lamp beads are connected on the control circuit board, and the clamping mechanism is arranged on the bearing frame. The LED lamp beads are arranged to form a matrix, and each LED lamp bead can emit light of various different wave bands; the clamping mechanism comprises a lifting table, a three-axis rotating holder, a fine-tuning cross holder and a clamping frame which are sequentially connected in a stacked mode from bottom to top, and the lifting table is located in front of the shell and located on the same horizontal line with the bearing frame. According to the technical scheme, the LED lamp beads can emit visible light of various different wave bands, so that the camera module can be tested in various different wave bands, the camera module does not need to be transferred to a device emitting different wave bands to be tested, repeated alignment of the camera module to be tested is reduced, operation is more convenient, and the test cost can be reduced.

Description

Technical Field

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

[0002] Camera modules are widely used in mobile terminals such as mobile phones, cameras, and camcorders. For camera modules with single-band filters, it is only necessary to test the image effect of the camera module in a single band, while for camera modules with multi-band filters, it is necessary to test the image effect of the camera module in multiple different bands. Currently, the test of camera modules with multi-band filters needs to be conducted in devices that emit different bands, which will result in long test time and high cost. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a camera module testing device.

[0004] The present application provides a camera module testing device, comprising:

[0005] A light source device, comprising a carrier and a light source assembly mounted on the carrier, the light source assembly comprising a housing, a control circuit board and a plurality of LED lamp beads, the housing being mounted on the top of the carrier, the control circuit board being arranged inside the housing, a plurality of LED lamp beads being connected to the control circuit board and arranged to form a matrix, each of the LED lamp beads being able to emit light of multiple different wavelengths, a through hole being provided on the front surface of the housing for light to pass through, a light guide column being embedded in the through hole;

[0006] The clamping mechanism includes a lifting platform, a three-axis rotating gimbal, a fine-tuning cross gimbal and a clamping frame which are stacked and connected in sequence from bottom to top. The lifting platform is located in front of the shell and is on the same horizontal line as the supporting frame. The clamping frame is used to clamp the camera module to be tested.

[0007] In one embodiment, it further includes an ambient light sensor and a digital tube, wherein the ambient light sensor and the digital tube are both embedded in the front surface of the shell, and the ambient light sensor and the digital tube are both electrically connected to the control circuit board.

[0008] In one embodiment, a buzzer is further included. The buzzer is installed in the shell and is electrically connected to the control circuit board. A buzzer hole is provided on the front surface of the shell corresponding to the position of the buzzer.

[0009] In one embodiment, a touch screen is embedded in the top of the housing, and the touch screen is electrically connected to the control circuit board.

[0010] In one embodiment, it also includes a first linear slide rail, which has a first slide track extending along its length direction, a connecting block is connected to the bottom of the support frame, and a slider is provided on one end of the connecting block facing the linear slide rail, and the slider extends into the first slide track so that the connecting block can drive the support frame to move on the first linear slide rail, and the lifting platform is located on the moving path of the support frame.

[0011] In one embodiment, it further includes a second linear slide rail, which is in the same straight line as the first linear slide rail, and the lifting platform is slidably connected to the second linear slide rail.

[0012] In one embodiment, a fixed block is connected to the bottom of the lifting platform, a mounting hole is provided on the fixed block, and a second slideway extending along its length direction is provided on the second linear slide rail. The fixed block passes through the mounting hole through a locking member and extends into the second slideway to be fixedly connected to the second linear slide rail.

[0013] In one embodiment, a test box is further included, which includes a frame and a plurality of cover plates, the side, back, bottom and top surfaces of the frame are covered with cover plates, the first linear slide rail is fixed to the cover plate on the bottom surface of the frame, and the second linear slide rail is connected to the front end of the frame at one end facing the first linear slide rail.

[0014] In one embodiment, the clamping frame includes a clamping seat and a frame body, the clamping seat is arranged on the top of the fine-tuning cross pan head, the lower end of the frame body is connected to the clamping seat, and the frame body is used to fix the camera module to be tested.

[0015] In one embodiment, the frame includes a connecting bar and a clamp, the lower end of the connecting bar is connected to the clamping seat, the clamp is rotatably connected to the upper end of the connecting bar through the rotating shaft, and the clamp is arranged at a clamping position for clamping the camera module to be tested.

[0016] Compared with the prior art, the camera module testing device provided in the embodiment of the present application has the following beneficial effects:

[0017] The camera module to be tested is clamped on the clamping frame, and then adjusted using a lifting platform, a three-axis rotating pan-tilt head, and a fine-tuning cross pan-tilt head to drive the camera module clamped on the clamping frame to move to horizontal center alignment with the LED lamp beads in the light source assembly. The control circuit board then controls the LED lamp beads to emit light of a band corresponding to the filter of the camera module. Since the LED lamp beads can emit visible light of multiple different bands, the camera module can be tested in multiple different bands without being transferred to a device that emits different bands for testing, which reduces repeated alignment of the camera module to be tested, makes operation more convenient, and helps reduce testing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a camera module testing device of the present application;

[0019] Figure 2 It is a structural schematic diagram of a light source component in a camera module testing device of the present application;

[0020] Figure 3 It is a structural schematic diagram of a clamping mechanism in a camera module testing device of the present application;

[0021] Figure 4 It is a structural schematic diagram of another embodiment of a camera module testing device of the present application.

[0022] Numbers in the figure:

[0023] 10. Light source equipment; 11. Light source assembly; 111. Shell; 112. LED lamp beads; 12. Carrying frame; 20. Clamping mechanism; 21. Lifting platform; 22. Three-axis rotating gimbal; 23. Fine-tuning cross gimbal; 24. Clamping frame; 241. Clamping seat; 242. Frame; 2421. Connecting strip; 2422. Clamp; 2422a. Clamping position; 30. First linear slide rail; 30a. First slideway; 40. Connecting block; 50. Slider; 60. Second linear slide rail; 60a. Second slideway; 70. Fixed block; 70a. Mounting hole; 80. Digital tube; 90. Ambient light sensor; 100. Touch screen; 110. Frame; 120. Closing plate. DETAILED DESCRIPTION

[0024] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0025] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0026] Please refer to Figures 1 to 3 The embodiment of the present application provides a camera module test device, including a light source device 10 and a clamping mechanism 20. The light source device 10 includes a carrier frame 12 and a light source assembly 11 installed on the carrier frame 12. The light source assembly 11 includes a shell 111, a control circuit board and a plurality of LED lamp beads 112. The shell 111 is installed at the top of the carrier frame 12. The control circuit board is arranged inside the shell 111. The plurality of LED lamp beads 112 are connected to the control circuit board and arranged to form a matrix. Each LED lamp bead 112 can emit light of multiple different wavelengths. The front surface of the shell 111 is provided with a through hole for light to pass through, and a light guide column is embedded in the through hole. The clamping mechanism 20 includes a lifting platform 21, a three-axis rotating gimbal 22, a fine-tuning cross gimbal 23 and a clamping frame 24, which are stacked and connected in sequence from bottom to top. The lifting platform 21 is located in front of the shell 111 and is on the same horizontal line as the carrier frame 12. The clamping frame 24 is used to clamp the camera module to be tested.

[0027] Exemplarily, the lifting platform 21, the three-axis rotating gimbal 22 and the fine-tuning cross gimbal 23 are mainly used to adjust the position and angle of the camera module, so that the camera module is adjusted to a position horizontally aligned with the light-emitting surface of the light source assembly 11, to ensure that the problem of inaccurate testing caused by position deviation is avoided. In addition, the fine-tuning cross gimbal 23 can realize the functions of front, back, left and right fine-tuning, and the surface of the fine-tuning cross gimbal 23 is made of aluminum alloy and oxidized, which can greatly enhance the service life of the fine-tuning cross gimbal 23. The three-axis fine-tuning gimbal is conveniently designed and can provide adjustment of three axes, namely: horizontal swing, front and back pitch, and left and right roll. The lifting platform 21 adopts the scissor lifting principle, and its surface is oxidized by aluminum alloy material, which can effectively improve the service life of the lifting platform 21.

[0028] For example, by arranging a light guide column at the perforation, not only can the LED lamp beads be protected from damage by external light sources, but the light emitted by the LED lamp beads can also be guided to ensure that the emitted light is more uniform.

[0029] Exemplarily, the LED lamp bead 112 can emit light of different wavelengths, so that the camera module can be tested in a variety of different wavelengths without transferring the camera module to different test devices for testing. For example: if the camera module only needs to be tested in a single wavelength, the control circuit board controls the LED lamp bead 112 to emit only one wavelength of light to illuminate the camera module; if the camera module only needs to be tested in three wavelengths, the control circuit board controls the LED lamp bead 112 to emit three different wavelengths of light in sequence to test the camera module, without repeated alignment, and the operation is more time-saving and trouble-free.

[0030] In addition, by arranging a plurality of LED lamp beads 112 in an array to form a matrix, it is convenient to conduct tests, and the lamp beads can be controlled to flash at different frequencies, so that the test parameters can be analyzed quickly and conveniently. In addition, the brightness of the LED lamp beads is increased by controlling a separate voltage regulating module group, and the voltage at both ends of the LED lamp beads is changed by the voltage regulating module, thereby achieving a change in the brightness of the LED lamp beads, and at the same time, it can also avoid the light emission of the LED lamp beads 112 being affected by voltage fluctuations when powering other components.

[0031] It should be noted that the control method of the control circuit board to control the LED lamp beads 112 to emit light of different bands is common knowledge to those skilled in the art and will not be elaborated on herein.

[0032] The camera module testing device based on the above technical features clamps the camera module to be tested on the clamping frame 24, and then uses the lifting platform 21, the three-axis rotating gimbal 22, and the fine-tuning cross gimbal 23 to adjust, so as to drive the camera module clamped on the clamping frame 24 to move to the horizontal center alignment with the LED lamp beads 112 in the light source assembly 11, and then the control circuit board controls the LED lamp beads 112 to emit light of the band corresponding to the filter of the camera module. Since the LED lamp beads 112 can emit visible light of multiple different bands, the camera module can be tested in multiple different bands without being transferred to a device that emits different bands for testing, which reduces the repeated alignment of the camera module to be tested, makes the operation more convenient, and helps to reduce the testing cost.

[0033] It should be noted that the camera module testing device provided by the utility model is not limited to the testing of dual-band camera modules; similarly, for the testing of camera modules with three or more bands, the LED lamp beads 112 emit light of multiple bands, and the distance between the LED lamp beads 112 and the camera module is adjusted to be equal to the focal length of the camera module under the light of a specific band. This can be understood by those skilled in the art and will not be elaborated here.

[0034] In one embodiment, an ambient light sensor 90 and a digital tube 80 are also included, and both the ambient light sensor 90 and the digital tube 80 are embedded in the front surface of the housing 111, and both the ambient light sensor 90 and the digital tube 80 are electrically connected to the control circuit board. In this way, the ambient light sensor 90 embedded in the front surface of the housing 111 is used to collect the light intensity of the test environment, and the digital tube 80 is used to display the collected data, so that the tester can understand it in time.

[0035] In one embodiment, a buzzer is further included, which is installed in the housing 111 and electrically connected to the control circuit board. A buzzer hole is provided on the front surface of the housing 111 at a position corresponding to the buzzer. In this way, the buzzer is controlled by the control circuit board so that it can emit a sound, so that the camera module can be tested for light sources of multiple different bands while also being tested for audio and video synchronization, without the need to be transferred to an additional audio test device for testing, which is conducive to improving the efficiency of the test.

[0036] In one embodiment, a touch screen 100 is embedded in the top of the housing 111, and the touch screen 100 is electrically connected to the control circuit board. In this way, the touch screen 100 can be used to control the LED lamp beads 112 to emit light of corresponding wavelengths according to different test requirements without the need for an external control panel.

[0037] In one embodiment, it also includes a first linear slide rail 30, and the first linear slide rail 30 has a first slide track 30a extending along its length direction. The bottom of the support frame 12 is connected to a connecting block 40, and the connecting block 40 is provided with a slider 50 at one end facing the linear slide rail. The slider 50 extends into the first slide track 30a so that the connecting block 40 can drive the support frame 12 to move on the first linear slide rail 30, and the lifting platform 21 is located on the moving path of the support frame 12.

[0038] Exemplarily, by setting a first slide 30a on the first linear slide 30, and slidingly connecting a slider 50 on the first slide 30a, and then connecting the slider 50 through a connecting block 40 connected to the bottom of the carrier 12, the carrier 12 can be slidably arranged on the first linear slide 30; when it is necessary to adjust the distance between the LED lamp bead 112 and the camera module so that it can be suitable for modules with different focal lengths, it is only necessary to push the carrier platform in the direction close to the clamping mechanism 20, so that the light source device 10 installed on the top of the carrier platform continues to approach the camera module clamped on the clamping mechanism 20 until the light source device 10 is moved to the desired position. The structure is simple and the adjustment is convenient.

[0039] In one embodiment, a second linear slide 60 is further included, and the second linear slide 60 is in the same straight line as the first linear slide 30, and the lifting platform 21 is slidably connected to the second linear slide 60. In this way, by slidably connecting the lifting platform 21 to the second linear slide 60, the clamping mechanism 20 can be driven to move, and then the camera module clamped on the clamping mechanism 20 can be driven to move closer to or away from the light source assembly 11, so as to meet different test requirements.

[0040] In one embodiment, a fixed block 70 is connected to the bottom of the lifting platform 21, and a mounting hole 70a is provided on the fixed block 70. The second linear slide rail 60 is provided with a second slideway 60a extending along its length direction. The fixed block 70 passes through the mounting hole 70a through a locking member and extends into the second slideway 60a to be fixedly connected to the second linear slide rail 60.

[0041] Exemplarily, the fixing block 70 and the bottom of the lifting platform 21 can be connected in a detachable manner (for example, fixed by bolts or screws), or can be fixed into one piece (for example, welding or injection molding), which is not limited to this.

[0042] It should be noted that when it is necessary to adjust the distance between the camera module and the light source device 10, the locking piece is pulled out from the second slide 60a so that the fixed block 70 can move on the second linear slide rail 60, thereby driving the clamping mechanism 20 to move until the camera module moves to a suitable position, and then the locking piece is reinserted into the second slide 60a to limit the sliding of the connecting block 40, thereby ensuring that the camera module will not move arbitrarily during the test, thereby ensuring the accuracy of the test, with a simple structure and easy adjustment to meet different test requirements.

[0043] Please refer to Figure 4In one embodiment, a test box is also included, which includes a frame 110 and a plurality of sealing plates 120. The side, back, bottom and top surfaces of the frame 110 are covered with sealing plates 120 to enclose a test space. The first linear slide 30 is fixed on the sealing plate 120 on the bottom surface of the frame and is located in the test space. The second linear slide 60 is connected to the front end of the frame at one end facing the first linear slide 30. In this way, the side, back, bottom and top surfaces of the frame 110 are covered with the sealing plates 120 to enclose a test space inside the frame, and then the light source device 10 can be placed in the test space to prevent the ambient light from affecting the test of the camera module.

[0044] In addition, the frame is mainly made of aluminum profiles, the surface of which is oxidized, and the sealing plate 120 is made of acrylic sealing plate 120. The sealing plate 120 is connected and fixed by bolts and angle pieces, which is convenient for disassembly.

[0045] In one embodiment, the clamping frame 24 includes a clamping seat 241 and a frame 242. The clamping seat 241 is arranged on the top of the fine-tuning cross pan-tilt 23. The lower end of the frame 242 is connected to the clamping seat 241. The frame 242 is used to fix the camera module to be tested. In this way, the position of the frame 242 can be fine-tuned by using the micro-cloud cross pan-tilt, so that the camera module to be tested installed on the frame 242 can be fine-tuned to ensure that the camera module is aligned with the LED lamp bead 112 in the center, thereby improving the accuracy of the test.

[0046] In one embodiment, the frame 242 includes a connecting bar 2421 and a clamp 2422, the lower end of the connecting bar 2421 is connected to the clamping seat 241, the clamp 2422 is rotatably connected to the upper end of the connecting bar 2421 through a rotating shaft, and the clamp 2422 is arranged at a clamping position 2422a for clamping the camera module to be tested.

[0047] For example, the frame 242 is formed by connecting a connecting strip 2421 and a clamp 2422, and the clamp 2422 is rotatably connected to the upper end of the connecting strip 2421 by a rotating shaft, so that the camera module can be controlled to rotate by rotating the clamp 2422 according to the needs of the test, with a simple structure and convenient adjustment. In addition, a bayonet can be provided on the clamp 2422 so that the camera module can be quickly clamped on the clamp 2422.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A camera module testing device, characterized in that: include: A light source device, comprising a carrier and a light source assembly mounted on the carrier, the light source assembly comprising a housing, a control circuit board and a plurality of LED lamp beads, the housing being mounted on the top of the carrier, the control circuit board being arranged inside the housing, a plurality of LED lamp beads being connected to the control circuit board and arranged to form a matrix, each of the LED lamp beads being able to emit light of multiple different wavelengths, a through hole being provided on the front surface of the housing for light to pass through, a light guide column being embedded in the through hole; The clamping mechanism includes a lifting platform, a three-axis rotating gimbal, a fine-tuning cross gimbal and a clamping frame which are stacked and connected in sequence from bottom to top. The lifting platform is located in front of the shell and is on the same horizontal line as the supporting frame. The clamping frame is used to clamp the camera module to be tested.

2. The camera module testing device according to claim 1, characterized in that: It also includes an ambient light sensor and a digital tube, both of which are embedded in the front surface of the shell, and both of which are electrically connected to the control circuit board.

3. The camera module testing device according to claim 2, characterized in that: It also includes a buzzer, which is installed in the shell and electrically connected to the control circuit board. A buzzer hole is provided on the front surface of the shell corresponding to the position of the buzzer.

4. The camera module testing device according to claim 1, characterized in that: A touch screen is embedded in the top of the shell, and the touch screen is electrically connected to the control circuit board.

5. The camera module testing device according to claim 1, characterized in that: It also includes a first linear slide rail, which has a first slide track extending along its length direction, a connecting block is connected to the bottom of the carrier, and a slider is provided at one end of the connecting block facing the linear slide rail, and the slider extends into the first slide track so that the connecting block can drive the carrier to move on the first linear slide rail, and the lifting platform is located on the moving path of the carrier.

6. The camera module testing device according to claim 5, characterized in that: It also includes a second linear slide rail, which is in the same straight line as the first linear slide rail, and the lifting platform is slidably connected to the second linear slide rail.

7. The camera module testing device according to claim 6, characterized in that: A fixed block is connected to the bottom of the lifting platform, and a mounting hole is provided on the fixed block. The second linear slide rail is provided with a second slideway extending along its length direction. The fixed block passes through the mounting hole through a locking member and extends into the second slideway to be fixedly connected to the second linear slide rail.

8. The camera module testing device according to claim 6, characterized in that: It also includes a test box, which includes a frame and multiple covering plates. The side, back, bottom and top surfaces of the frame are covered with covering plates. The first linear slide rail is fixed to the covering plate on the bottom surface of the frame, and the second linear slide rail is connected to the front end of the frame at one end facing the first linear slide rail.

9. The camera module testing device according to claim 1, characterized in that: The clamping frame includes a clamping seat and a frame body, the clamping seat is arranged on the top of the fine-tuning cross pan head, the lower end of the frame body is connected to the clamping seat, and the frame body is used to fix the camera module to be tested.

10. The camera module testing device according to claim 9, characterized in that: The frame includes a connecting bar and a clamp, the lower end of the connecting bar is connected to the clamping seat, the clamp is rotatably connected to the upper end of the connecting bar through a rotating shaft, and the clamp is arranged at a clamping position for clamping the camera module to be tested.

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