VCSEL (Vertical Cavity Surface Emitting Laser) far-field test equipment

Abstract

The utility model provides a VCSEL far field test device, comprising a front box body assembly, a rear box body assembly, a Holder assembly, a camera assembly and a projection assembly, the Holder assembly and the projection assembly are both arranged in the front box body assembly, the camera assembly is arranged in the rear box body assembly, and the projection assembly is located between the Holder assembly and the camera assembly; the Holder assembly comprises a rotating motor mechanism and a clamping mechanism, and the rotating motor mechanism is used for driving the clamping mechanism to clamp the VCSEL projection module and enable the VCSEL projection module to rotate, so that the projection end of the VCSEL projection module faces the projection assembly and emits infrared laser line patterns; and the camera assembly is used for capturing a pattern projected by the VCSEL projection module on the projection assembly, and is in electric signal connection with a computer arranged at the front end of the front box body assembly. The utility model relates to the technical field of VCSEL far field testing.

Description

Technical Field

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

[0002] With the rapid development of optoelectronic technology, vertical cavity surface emitting lasers (VCSELs) have been widely used in the fields of data communication, optical sensing, 3D sensing, etc. due to their unique performance advantages. However, the performance of VCSEL devices, especially their far-field optoelectronic characteristics, is directly related to the quality and reliability of end products. Therefore, efficient and accurate far-field testing technology has become an indispensable part of the production process.

[0003] At present, there is no device on the market that can directly measure the far-field performance of VCSEL modules, making it difficult to quickly and effectively judge the far-field optoelectronic performance of VCSELs during the production stage, and it is impossible to achieve quality control of products at the production end. Moreover, the existing testing devices are usually complex to operate and have a long testing cycle, making it difficult to meet the rapid testing requirements of the production line.

[0004] Therefore, it is imperative to redesign a VCSEL far-field testing device. Summary of the Utility Model

[0005] Aiming at the defects of the above-mentioned prior art, the utility model provides a VCSEL far-field testing device, aiming to solve the problem of quickly and effectively testing the far-field optoelectronic performance of VCSELs during the production stage to achieve quality control of products at the production end.

[0006] To achieve the above purpose, the technical solution adopted by the utility model is: a VCSEL far-field testing device, including a front box body assembly, a rear box body assembly, a Holder assembly, a camera assembly, and a projection assembly. The Holder assembly and the projection assembly are both arranged inside the front box body assembly, the camera assembly is arranged inside the rear box body assembly, and the projection assembly is located between the Holder assembly and the camera assembly. The Holder assembly includes a rotating motor mechanism and a clamping mechanism. The rotating motor mechanism is used to drive the clamping mechanism to clamp the VCSEL projection module and rotate it, so that the projection end of the VCSEL projection module faces the projection assembly and emits an infrared laser line pattern. The camera assembly is used to capture the pattern projected by the VCSEL projection module on the projection assembly and is electrically connected to a computer arranged at the front end of the front box body assembly.

[0007] Based on the above, the beneficial effects of a VCSEL far-field test device are as follows: it solves the problem of quickly and effectively testing the far-field optoelectronic performance of VCSELs during the production stage to achieve product quality control at the production end; specifically manifested in: the present utility model captures the pattern emitted by the VCSEL projection module through a camera and uses a computer for analysis, enabling rapid evaluation of the performance of the VCSEL projection module, thereby effectively controlling product quality during the production stage; the beneficial effect of the front cabinet assembly is to install the Holder assembly and the projection assembly; the beneficial effect of the rear cabinet assembly is to install the camera assembly; the beneficial effect of the Holder assembly is to fix and adjust the VCSEL projection module to ensure its correct position and angle during testing; the beneficial effect of the camera assembly is to capture and record the pattern emitted by the VCSEL projection module, providing data for performance analysis; the beneficial effect of the projection assembly is to display the pattern emitted by the VCSEL projection module, facilitating shooting by the camera assembly and ensuring the intuitiveness and accuracy of the test; the beneficial effect of the rotary motor mechanism is to drive the VCSEL projection module to rotate from the module installation position to the module test position; the beneficial effect of the clamping mechanism is to fix the VCSEL projection module to ensure its stability and accuracy during the test.

[0008] Further, the clamping mechanism includes a first five-axis slide table component and a flip-type clamping component. The flip-type clamping component is disposed at the upper end of the first five-axis slide table component. The first five-axis slide table component is used to adjust the precise positions of the flip-type clamping component along the X-axis, Y-axis, Z-axis, and two rotation axes around the X-axis and Y-axis. The flip-type clamping component includes a fixture bottom plate and a fixture cover plate. A projection module installation groove block and a module test output component are arranged inside the fixture bottom plate. The VCSEL projection module is disposed inside the projection module installation groove block. A signal transmission component is arranged on the fixture cover plate. One end of the signal transmission component is connected to the pin end of the VCSEL projection module, and the other end is connected to the module test output component.

[0009] Based on the above, the beneficial effect of the first five-axis slide table component is to precisely adjust the position of the clamping mechanism to achieve precise positioning of the VCSEL projection module; the beneficial effect of the flip-type clamping component is to provide a convenient way for installing and replacing the VCSEL projection module, improving operation efficiency; the beneficial effect of the fixture bottom plate is to provide an installation foundation for the VCSEL projection module to ensure its stability and safety; the beneficial effect of the fixture cover plate is to protect the VCSEL projection module and provide an installation position for the signal transmission component; the beneficial effect of the projection module installation groove block is to ensure the correct installation and positioning of the VCSEL projection module for easy testing; the beneficial effect of the module test output component is to provide a signal output interface for the VCSEL projection module to facilitate the VCSEL projection module to emit an infrared laser line pattern.

[0010] Further, the camera assembly includes a camera mount, a second five-axis slide table component, and a camera. The second five-axis slide table component is disposed on the camera mount, and the camera is disposed on the second five-axis slide table component. The second five-axis slide table component is used to adjust the precise positions of the X-axis, Y-axis, Z-axis of the camera, and two rotation axes around the X-axis and Y-axis. A straight line is formed among the centers of the camera, the VCSEL projection module, and the projection component.

[0011] Based on the above, the beneficial effect of the camera mount is to provide a stable installation position for the camera; the beneficial effect of the second five-axis slide table component is to precisely adjust the position of the camera to achieve the optimal shooting angle and distance; the beneficial effect of the camera is to capture the emission pattern of the VCSEL projection module and provide clear image data for performance analysis.

[0012] Further, sliding tracks are provided on both sides of the inner bottom end and the top end of the front box assembly. The projection component includes a projection screen, a projection frame, and eight frame sliders. The projection screen is flatly installed in the projection frame. Four of the frame sliders are respectively arranged in pairs at the bottom ends of both sides of the projection frame, and the other four frame sliders are respectively arranged in pairs at the top ends of both sides of the projection frame. The frame sliders are slidably connected to the sliding tracks.

[0013] Based on the above, the beneficial effect of the sliding track is to enable the projection component to slide along the track to adapt to different test requirements; the beneficial effect of the projection screen is to display the pattern of the VCSEL projection module to facilitate the analysis and evaluation of the far-field performance; the beneficial effect of the projection frame is to provide support for the projection screen to ensure its flatness and stability during the test; the beneficial effect of the frame sliders is to enable the projection component to move on the sliding track to achieve a flexible test configuration.

[0014] Further, the Holder assembly further includes a temperature control component. The temperature control component includes a heating module, a cooling fan, a refrigeration module, and a control module. The heating module and the refrigeration module are respectively disposed on both sides of the bottom end of the projection module mounting groove block. The cooling fan is disposed at the lower end of the heating module to assist the heating module in dissipating heat. The control module is disposed at the bottom end of the first five-axis slide table component and is electrically connected to the heating module, the cooling fan, and the refrigeration module respectively.

[0015] Based on the above, the beneficial effect of the temperature control component is to maintain the stable temperature of the VCSEL projection module and ensure the accuracy of the test results; the beneficial effect of the heating module is to provide a heating function and simulate the temperature environment under actual working conditions; the beneficial effect of the cooling fan is to assist the heating module in heat dissipation and maintain the stability and efficiency of the temperature control system; the beneficial effect of the refrigeration module is to provide a cooling function and ensure that the VCSEL projection module is tested at a constant temperature; the beneficial effect of the control module is to control the operation of the temperature control component and maintain the stable temperature of the VCSEL projection module.

[0016] Furthermore, an automatic door module is provided at the front end of the front cabinet assembly, and the automatic door module is used to facilitate the installation of the VCSEL projection module by the staff onto the Holder assembly.

[0017] Based on the above, the beneficial effect of the automatic door module is to facilitate the installation and replacement of the VCSEL projection module by the operator and improve the usability of the device.

[0018] Furthermore, double doors are provided on both sides of the front cabinet assembly and the rear cabinet assembly, which are used to facilitate the maintenance of the VCSEL far-field test device by the staff.

[0019] Based on the above, the beneficial effect of the double doors is to facilitate the maintenance and repair of the device and reduce the maintenance cost.

[0020] To more clearly elaborate the above features of the present invention and the purposes to be achieved, the following further describes the present invention in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : is a perspective view of the present invention;

[0022] Figure 2 : is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 : is a schematic diagram of the Holder assembly of the present invention;

[0024] Figure 4 : is a schematic diagram of the structure of the fixture bottom plate of the present invention;

[0025] Figure 5 : is a schematic diagram of the structure of the temperature control component of the present invention;

[0026] Figure 6 : is a schematic diagram of the camera assembly of the present invention.

[0027] Description of the attached reference numerals: 1 - front cabinet assembly, 11 - sliding track, 12 - automatic door module, 13 - computer, 14 - double doors, 2 - Holder assembly, 21 - rotating motor mechanism, 22 - clamping mechanism, 221 - first five-axis slide unit, 222 - flip-type clamping unit, 2221 - fixture base plate, 2222 - fixture cover plate, 2223 - projection module mounting groove block, 2224 - signal transmission component, 2225 - module test output component, 23 - temperature control component, 231 - heating module, 232 - cooling fan, 233 - refrigeration module, 234 - control module, 3 - rear cabinet assembly, 4 - camera assembly, 41 - camera mount, 42 - second five-axis slide unit, 43 - camera, 5 - projection assembly, 51 - projection screen, 52 - projection mount, 53 - frame slider, 10 - VCSEL projection module. Detailed implementation

[0028] As Figures 1-6 shown, a VCSEL far-field test device includes a front cabinet assembly 1, a rear cabinet assembly 3, a Holder assembly 2, a camera assembly 4, and a projection assembly 5. The Holder assembly 2 and the projection assembly 5 are both disposed within the front cabinet assembly 1. The camera assembly 4 is disposed within the rear cabinet assembly 3, and the projection assembly 5 is located between the Holder assembly 2 and the camera assembly 4. The Holder assembly 2 includes a rotating motor mechanism 21 and a clamping mechanism 22. The rotating motor mechanism 21 is used to drive the clamping mechanism 22 to clamp the VCSEL projection module 10 and rotate it, so that the projection end of the VCSEL projection module 10 faces the projection assembly 5 and emits an infrared laser line pattern. The camera assembly 4 is used to capture the pattern projected by the VCSEL projection module 10 on the projection assembly 5 and is electrically connected to the computer 13 disposed at the front end of the front cabinet assembly 1.

[0029] The clamping mechanism 22 includes a first five-axis slide unit 221 and a flip-type clamping unit 222. The flip-type clamping unit 222 is disposed at the upper end of the first five-axis slide unit 221. The first five-axis slide unit 221 is used to adjust the precise positions of the flip-type clamping unit 222 in the X-axis, Y-axis, Z-axis, and two rotation axes around the X-axis and Y-axis. The flip-type clamping unit 222 includes a fixture base plate 2221 and a fixture cover plate 2222. A projection module mounting groove block 2223 and a module test output component 2225 are disposed within the fixture base plate 2221. The VCSEL projection module 10 is disposed within the projection module mounting groove block 2223. A signal transmission component 2224 is disposed on the fixture cover plate 2222. One end of the signal transmission component 2224 is connected to the pin end of the VCSEL projection module 10, and the other end is connected to the module test output component 2225.

[0030] The camera assembly 4 includes a camera mount 41, a second five-axis slide member 42, and a camera 43. The second five-axis slide member 42 is disposed on the camera mount 41, and the camera 43 is disposed on the second five-axis slide member 42. The second five-axis slide member 42 is used to adjust the precise positions of the X-axis, Y-axis, Z-axis, and two rotation axes around the X-axis and Y-axis of the camera 43. A straight line is formed among the centers of the camera 43, the VCSEL projection module 10, and the projection assembly 5.

[0031] Sliding tracks 11 are provided on both sides of the inner bottom end and the top end of the front cabinet assembly 1. The projection assembly 5 includes a projection screen 51, a projection frame 52, and eight frame sliders 53. The projection screen 51 is flatly installed in the projection frame 52. Four of the frame sliders 53 are respectively arranged in pairs at the bottom ends of both sides of the projection frame 52, and the other four frame sliders 53 are respectively arranged in pairs at the top ends of both sides of the projection frame 52. The frame sliders 53 are slidably connected to the sliding tracks 11.

[0032] The Holder assembly 2 further includes a temperature control component 23. The temperature control component 23 includes a heating module 231, a cooling fan 232, a refrigeration module 233, and a control module 234. The heating module 231 and the refrigeration module 233 are respectively disposed on both sides of the bottom end of the projection module mounting groove block 2223. The cooling fan 232 is disposed at the lower end of the heating module 231 for assisting the heating module 231 in heat dissipation. The control module 234 is disposed at the bottom end of the first five-axis slide member 221 and is electrically connected to the heating module 231, the cooling fan 232, and the refrigeration module 233 respectively.

[0033] An automatic door module 12 is provided at the front end of the front cabinet assembly 1. The automatic door module 12 is used to facilitate the installation of the VCSEL projection module 10 by the staff onto the Holder assembly 2.

[0034] Double doors 14 are provided on both sides of the front cabinet assembly 1 and the rear cabinet assembly 3 for facilitating the maintenance of the VCSEL far-field test equipment by the staff.

[0035] In summary, the specific implementation of the present utility model is as follows: Open the automatic door module 12 of the front box assembly 1, place the VCSEL projection module 10 in the projection module installation groove block 2223 of the flip-type clamping component 222 of the Holder component 2, and cover the fixture cover plate 2222 to ensure that the VCSEL projection module 10 is clamped behind the fixture bottom plate 2221; close the automatic door module 12; start the rotation motor mechanism 21 of the Holder component 2 to drive the clamping mechanism 22 to rotate the VCSEL projection module 10 so that its projection end faces the projection component 5, ensure that the projection end of the VCSEL projection module 10 is aligned with the projection component 5, adjust the position of the frame slider 53 to keep the projection screen 51 at an appropriate distance from the VCSEL projection module 10; adjust the position of the camera component 4 through the second five-axis slide table component 42 to ensure that the centers of the camera 43, the VCSEL projection module 10, and the projection component 5 are on a straight line, adjust the focal length and exposure parameters of the camera 43 to obtain clear image data, start the camera 43 to capture the pattern projected by the VCSEL projection module 10 on the projection component 5, and transmit the pattern data to the computer 13, and use computer software for analysis to evaluate the performance of the VCSEL projection module 10. According to the test results, adjust or replace the VCSEL projection module 10 to meet the product quality requirements.

[0036] The above is only the optimal solution embodiment of the present utility model and is not used to limit the present utility model. Various modifications or replacements made by those skilled in the art to the present utility model without departing from the essence and protection scope of the present utility model should also be within the protection scope of the present utility model.

Claims

1. A VCSEL far-field test device, characterized in that: The invention comprises a front box assembly (1), a rear box assembly (3), a holder assembly (2), a camera assembly (4) and a projection assembly (5), wherein the holder assembly (2) and the projection assembly (5) are both arranged in the front box assembly (1), the camera assembly (4) is arranged in the rear box assembly (3), and the projection assembly (5) is located between the holder assembly (2) and the camera assembly (4); the holder assembly (2) comprises a rotating motor mechanism (21) and a clamping mechanism (22), the rotating motor mechanism (21) is used to drive the clamping mechanism (22) to clamp a VCSEL projection module (10) and rotate it, so that the projection end of the VCSEL projection module (10) faces the projection assembly (5) and emits an infrared laser ray strip pattern; the camera assembly (4) is used to capture a pattern projected by the VCSEL projection module (10) on the projection assembly (5), and is electrically connected to a computer (13) arranged at the front end of the front box assembly (1).

2. A VCSEL far-field test device according to claim 1, characterized in that: The clamping mechanism (22) comprises a first five-axis slide component (221) and a flip-type clamping component (222), wherein the flip-type clamping component (222) is arranged at the upper end of the first five-axis slide component (221), the first five-axis slide component (221) is used to adjust the precise positions of the X-axis, Y-axis, Z-axis and two rotation axes around the X-axis and Y-axis of the flip-type clamping component (222), and the flip-type clamping component (222) comprises a clamp bottom plate (2221) and a clamp cover plate (2222), A projection module mounting slot block (2223) and a module test output component (2225) are arranged in the fixture bottom plate (2221); the VCSEL projection module (10) is arranged in the projection module mounting slot block (2223); a signal transmission component (2224) is arranged on the fixture cover plate (2222); one end of the signal transmission component (2224) is connected to a pin end of the VCSEL projection module (10), and the other end is connected to the module test output component (2225).

3. A VCSEL far-field test device according to claim 2, characterized in that: The camera assembly (4) comprises a camera frame (41), a second five-axis slide component (42) and a camera (43), wherein the second five-axis slide component (42) is arranged on the camera frame (41), and the camera (43) is arranged on the second five-axis slide component (42), and the second five-axis slide component (42) is used to adjust the precise position of the X-axis, Y-axis, Z-axis and two rotation axes around the X-axis and Y-axis of the camera (43), and the center point of the camera (43), the VCSEL projection module (10) and the projection assembly (5) is connected to form a straight line.

4. A VCSEL far-field test device according to claim 1, characterized in that: Sliding rails (11) are arranged on both sides of the inner bottom and top of the front box assembly (1); the projection assembly (5) comprises a projection screen (51), a projection frame (52) and eight frame sliders (53); the projection screen (51) is flatly installed in the projection frame (52); four frame sliders (53) are arranged in pairs at the bottom ends of both sides of the projection frame (52); another four frame sliders (53) are arranged in pairs at the top ends of both sides of the projection frame (52); and the frame sliders (53) are slidably connected to the sliding rails (11).

5. A VCSEL far-field test device according to claim 2, characterized in that: The Holder component (2) further comprises a temperature control component (23), wherein the temperature control component (23) comprises a heating module (231), a heat dissipation fan (232), a cooling module (233) and a control module (234); the heating module (231) and the cooling module (233) are respectively arranged at two sides of the bottom end of the projection module mounting slot block (2223); the heat dissipation fan (232) is arranged at the lower end of the heating module (231) to assist the heating module (231) in heat dissipation; the control module (234) is arranged at the bottom end of the first five-axis slide component (221) and is respectively connected to the heating module (231), the heat dissipation fan (232) and the cooling module (233) via electrical signals.

6. A VCSEL far-field test device according to claim 1, characterized in that: An automatic door module (12) is provided at the front end of the front box assembly (1), and the automatic door module (12) is used to facilitate a worker to install the VCSEL projection module (10) on the Holder assembly (2).

7. A VCSEL far-field test device according to claim 1, characterized in that: Double doors (14) are provided on both sides of the front box assembly (1) and the rear box assembly (3) to facilitate staff to maintain the VCSEL far-field test equipment.

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