Line width testing device for multi-line laser module
By designing a rotatable connection between the rotating part and the support part, and a glass bead set screw structure, the problem of complex operation of the multi-line laser module linewidth testing device was solved, and fast and accurate linewidth measurement was achieved.
Patent Information
- Application Number
- CN202520565647.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing multi-line laser module linewidth testing devices are complex to operate.
A multi-line laser module linewidth testing device is provided. Through the rotatable connection between the rotating part and the support part, combined with structures such as glass bead set screws and rotary bearings, the device enables rapid positioning and accurate measurement of multi-line laser modules.
It enables rapid and accurate measurement of the linewidth of multi-line laser modules, simplifying the operation process.
Smart Images
Figure CN223826998U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser diode technology, and specifically to a multi-line laser module linewidth testing device. Background Technology
[0002] A multi-line laser module is a modular device integrating multiple lasers, typically composed of multiple laser diodes or laser elements, each generating an independent laser beam. This type of module can simultaneously output multiple laser beams of different wavelengths, and has wide applications in 3D measurement. The linewidth of a laser refers to the bandwidth of the emitted laser beam across its frequency range; this parameter is crucial for determining the measurement resolution and accuracy of a multi-line laser module. Existing methods for testing the linewidth of multi-line laser modules are complex to implement. Utility Model Content
[0003] In view of the above-mentioned prior art, this utility model provides a multi-line laser module linewidth testing device to solve the problem of complex operation of existing multi-line laser module linewidth testing devices.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a multi-line laser module linewidth testing device, comprising:
[0005] The rotating part is fixedly connected to the multi-line laser module, and the rotating part is provided with multiple positioning holes;
[0006] A support portion is rotatably connected to the rotating portion. A glass bead set screw is provided on the support portion. When the rotating portion rotates to a set position, the glass bead set screw is positioned in the corresponding positioning hole.
[0007] A light-emitting plate is disposed on the side of the rotating part away from the supporting part, and the laser emitted by the multi-line laser module can be projected onto the light-emitting plate;
[0008] The imaging component is positioned opposite the light-emitting plate and can capture the laser light projected onto the light-emitting plate.
[0009] The beneficial effects of the above-mentioned technical solution in this utility model are as follows: by fixing the multi-line laser module to the rotating part and then rotatably connecting the rotating part to the support part, the multi-line laser module can be rotated by rotating the rotating part, and multiple sets of lasers at different angles can be captured. By setting glass bead set screws on the support part, when the multi-line laser module is rotated to the required position, the glass bead set screws match the corresponding positioning holes on the rotating part at that position, thereby realizing the rapid positioning of the rotating part, and thus realizing the rapid and accurate measurement of the line width of the multi-line laser module.
[0010] Based on the above technical solution, the present invention can be further improved as follows.
[0011] Furthermore, a rotating shaft is inserted into the rotating part and the supporting part, and a thrust bearing is sleeved on the rotating shaft. The thrust bearing is disposed inside the rotating part and the supporting part.
[0012] The beneficial effect of adopting the above-mentioned further technical solution in this utility model is that the rotating part and the supporting part can be connected through the rotating shaft and the thrust bearing, and the rotating part can rotate relative to the supporting part.
[0013] Furthermore, the rotating shaft includes a first connecting section and a second connecting section, the diameter of the second connecting section being larger than the diameter of the first connecting section. The first connecting section passes through the support portion, and the second connecting section passes through the rotating portion and abuts against the side of the support portion near the rotating portion.
[0014] The beneficial effect of adopting the above-mentioned further technical solution in this utility model is that by having the second connecting section pass through the rotating part and abut against the side of the supporting part close to the rotating part, the position of the rotating shaft can be defined, thereby facilitating the rapid positioning of the rotating part.
[0015] Furthermore, the rotating shaft also includes a third connecting section, the diameter of which is larger than that of the second connecting section. The third connecting section is disposed on the side of the rotating part away from the support part. A spring is also sleeved on the second connecting section, with both ends of the spring abutting against the rotating part and the third connecting section respectively. When the spring is compressed, the side of the third connecting section away from the second connecting section is configured to abut against the multi-line laser module.
[0016] The beneficial effect of the above-mentioned further technical solution adopted in this utility model is that by abutting the two ends of the spring against the rotating part and the third connecting section respectively, when the spring is compressed, it will give pressure to the rotating part, thereby limiting the distance between the rotating part and the support part, and thus realizing the positioning of the rotating part.
[0017] Furthermore, the rotating part includes an L-shaped first extension and a second extension. The first extension is fixedly connected to the multi-line laser module. The rotating shaft passes through the second extension and the support. The thrust bearing is disposed in the second extension and the support. The third connecting section is disposed on the side of the second extension away from the support. A rotary bearing is sleeved on the spring. The rotary bearing is disposed in the second extension.
[0018] The beneficial effect of adopting the above-mentioned further technical solution in this utility model is that by fitting a rotary bearing on the spring and placing the rotary bearing inside the second extension, the rotating part can rotate better relative to the support part.
[0019] Furthermore, the support portion includes an L-shaped third extension and a fourth extension, with the first extension and the third extension being opposite to each other, and the second extension and the fourth extension being opposite to each other. The rotating shaft passes through the second extension and the fourth extension. A rotating block is provided on the second extension, and an auxiliary rotating bearing is provided on the fourth extension. The central axis of the auxiliary rotating bearing is parallel to the central axis of the rotating shaft. The auxiliary rotating bearing can rotate relative to the fourth extension. When the rotating portion rotates, the rotating block abuts against the outer surface of the auxiliary rotating bearing.
[0020] The beneficial effect of adopting the above-mentioned further technical solution in this utility model is that by setting an auxiliary rotary bearing on the fourth extension and a rotating block on the second extension, and making the rotating block abut against the outer surface of the auxiliary rotary bearing when the rotating part rotates, the fourth extension can provide support to the second extension, thereby keeping the second extension and the fourth extension parallel at all times, and thus making the rotation angle of the multi-line laser module more accurate.
[0021] Furthermore, the rotating part is provided with a rotating handle.
[0022] The beneficial effect of adopting the above-mentioned further technical solution in this utility model is that by providing a rotating handle on the rotating part, the rotating part can be driven to rotate by rotating the handle, thereby facilitating operation.
[0023] Furthermore, a fixing member is provided on the rotating part, and the fixing member has a laser module receiving cavity, in which the multi-line laser module is fixed.
[0024] The beneficial effect of adopting the above-mentioned further technical solution in this utility model is that by fixing the multi-line laser module in the laser module receiving cavity on the fixing member, and then setting the fixing member on the rotating part, it is convenient to replace the fixing member for testing the line width of multi-line laser modules of different specifications.
[0025] Furthermore, the imaging component includes an industrial camera, an angle displacement stage, and a three-axis displacement stage, with the angle displacement stage disposed on the three-axis displacement stage and the industrial camera disposed on the angle displacement stage.
[0026] The beneficial effect of adopting the above-mentioned further technical solution in this utility model is that by setting the industrial camera on the angle displacement stage, and then setting the angle displacement stage on the three-axis displacement stage, it is convenient to adjust the height and angle of the industrial camera, thereby facilitating the industrial imaging of the laser projected onto the light-emitting plate.
[0027] Furthermore, it also includes an optical breadboard, on which the rotating part, the supporting part, the lighting plate and the shooting component are all disposed.
[0028] The beneficial effects of adopting the above-mentioned further technical solutions in this utility model are: the optical breadboard has the characteristics of high rigidity and low mass ratio, which can improve the adjustment accuracy. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the multi-line laser module linewidth testing device of this utility model;
[0030] Figure 2 This is a partial structural schematic diagram of the multi-line laser module linewidth testing device of this utility model;
[0031] Figure 3 for Figure 2 An explosion diagram;
[0032] Among them, 1. Rotating part, 11. Positioning hole, 12. First extension part, 13. Second extension part, 14. Rotating handle, 2. Support part, 21. Glass bead set screw, 22. Third extension part, 23. Fourth extension part, 3. Rotating shaft, 31. First connecting section, 32. Second connecting section, 33. Third connecting section, 4. Thrust bearing, 5. Spring, 6. Rotary bearing, 7. Auxiliary rotary bearing, 8. Rotating block, 9. Fixing part, 91. Laser module receiving cavity, 100. Lighting plate, 110. Imaging assembly, 111. Industrial camera, 112. Angle displacement stage, 113. Three-axis displacement stage, 120. Optical breadboard. Detailed Implementation
[0033] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0034] In embodiments of this utility model, such as Figure 1-3 As shown, a multi-line laser module linewidth testing device is provided, including a rotating part 1, a supporting part 2, a lighting plate 100, an imaging component 110, and an optical breadboard 120. The rotating part 1, the supporting part 2, the lighting plate 100, and the imaging component 110 are all mounted on the optical breadboard 120. The imaging component 110 includes an industrial camera 111, an angle displacement stage 112, and a three-axis displacement stage 113. The angle displacement stage 112 is fixed on the three-axis displacement stage 113, and the industrial camera 111 is fixed on the angle displacement stage 112, so that the industrial camera 111 can move and adjust its angle in the XYZ directions.
[0035] The rotating part 1 includes an L-shaped first extension 12 and a second extension 13. The first extension 12 and the second extension 13 can be integrally formed or fixedly connected by bolts or welding. A fixing member 9 is provided on the first extension 12, and the two are connected by a positioning post. The fixing member 9 is replaceable. The fixing member 9 has a laser module receiving cavity 91, and the multi-line laser module is fixed in the laser module receiving cavity 91, thereby fixing the multi-line laser module to the rotating part 1.
[0036] The support portion 2 includes an L-shaped third extension 22 and a fourth extension 23. The third extension 22 and the fourth extension 23 can be integrally formed or fixedly connected by bolts or welding. The first extension 12 is disposed opposite to the third extension 22, and the second extension 13 is disposed opposite to the fourth extension 23.
[0037] A rotating shaft 3 is disposed within the second extension 13 and the fourth extension 23. The rotating shaft 3 includes a first connecting section 31, a second connecting section 32, and a third connecting section 33. The diameter of the second connecting section 32 is larger than the diameter of the first connecting section 31, and the diameter of the third connecting section 33 is larger than the diameter of the second connecting section 32. The first connecting section 31 passes through the fourth extension 23, and the second connecting section 32 passes through the rotating part 13 and abuts against the side of the fourth extension 23 closest to the second extension 13, thereby preventing the second connecting section 32 from passing through the fourth extension 23. The third connecting section 33 is disposed on the side of the second extension 13 opposite to the fourth extension 23.
[0038] A thrust bearing 4 is fitted onto the second connecting section 32. The thrust bearing 4 is disposed within the second extension 13 and the fourth extension 23. A receiving cavity matching the thrust bearing 4 is opened on the opposite side of the second extension 13 and the fourth extension 23, and the thrust bearing 4 is disposed within the receiving cavity.
[0039] A spring 5 is also fitted onto the second connecting section 32. The two ends of the spring 5 abut against the second extension 13 and the third connecting section 33, respectively, thereby confining the spring 5 between the second extension 13 and the third connecting section 33. When the spring 5 is compressed, the side of the third connecting section 33 facing away from the second connecting section 32 is configured to abut against the multi-line laser module. A rotary bearing 6 is fitted onto the spring 5. The rotary bearing 6 is disposed within the second extension 13. A receiving cavity matching the rotary bearing 6 is formed on the surface of the second extension 13 facing away from the fourth extension 23, and the rotary bearing 6 is disposed within this receiving cavity.
[0040] A rotating block 8 is provided on the second extension 13. The rotating block 8 and the second extension 13 can be integrally formed or fixedly connected by bolts or welding. The rotating block 8 is located on the side of the second extension 13 opposite to the fourth extension 23. An auxiliary rotary bearing 7 is provided on the fourth extension 23. The central axis of the auxiliary rotary bearing 7 is parallel to the central axis of the rotating shaft 3. A through hole is provided on the fourth extension 23, and the auxiliary rotary bearing 7 is disposed in the through hole and fixed to the fourth extension 23 by a rotating shaft. The auxiliary rotary bearing 7 can rotate within the through hole. Multiple auxiliary rotary bearings 7 can be provided. When the rotating part 1 rotates, the rotating block 8 abuts against the outer surface of the auxiliary rotary bearing 7. The side of the rotating block 8 that abuts against the auxiliary rotary bearing 7 is an arc-shaped surface.
[0041] The second extension 13 and the fourth extension 23 are provided with a plurality of positioning holes 11 on the side opposite to each other. The fourth extension 23 and the second extension 13 are provided with a glass bead set screw 21. When the rotating part 1 is rotated to different positions, the glass bead set screw 21 is positioned in the positioning hole 11 corresponding to that position, thereby achieving precise rotation of the rotating part 1.
[0042] A rotating handle 14 is provided on the second extension 13 by means of integral forming or threaded connection.
[0043] The light-emitting plate 100 is disposed on the side of the rotating part 1 away from the support part 2, and the laser emitted by the multi-line laser module can be projected onto the light-emitting plate 100. The imaging component 110 is disposed opposite to the light-emitting plate 100 and can capture the laser projected onto the light-emitting plate 100.
[0044] In use, the multi-line laser module is placed in the fixing part 9. The rotating part 1 is rotated by holding the rotating handle 14 until the positioning hole 11 corresponding to the first set position aligns with the glass bead setter 21. The rotating part 1 is then rotated to the first set position corresponding to the positioning hole 11. The multi-line laser module is powered on, causing its emitted laser to strike the illumination plate 100. The laser image on the illumination plate 100 is captured by the industrial camera 111. The rotating part 1 is rotated again until the positioning hole 11 corresponding to the second set position aligns with the glass bead setter 21, obtaining the laser image at the second set position. This process is repeated to obtain the laser image at the third set position. The linewidth of the obtained laser image is then analyzed and tested using software to determine the linewidth of the multi-line laser module. The angles between the first, second, and third set positions can be 15° sequentially.
[0045] Although specific embodiments of this utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.
Claims
1. A linewidth testing device for a multi-line laser module, characterized in that, include: The rotating part (1) is fixedly connected to the multi-line laser module, and the rotating part (1) is provided with multiple positioning holes (11). The support part (2) is rotatably connected to the rotating part (1). A glass bead set screw (21) is provided on the support part (2). When the rotating part (1) rotates to a set position, the glass bead set screw (21) is arranged in the corresponding positioning hole (11). A light-emitting plate (100) is disposed on the side of the rotating part (1) away from the supporting part (2), and the laser emitted by the multi-line laser module can be projected onto the light-emitting plate (100). The imaging component (110) is positioned opposite to the light-emitting plate (100) and can capture the laser beam projected onto the light-emitting plate (100).
2. The multi-line laser module linewidth testing device according to claim 1, characterized in that: A rotating shaft (3) is inserted inside the rotating part (1) and the supporting part (2), and a thrust bearing (4) is sleeved on the rotating shaft (3). The thrust bearing (4) is located inside the rotating part (1) and the supporting part (2).
3. The multi-line laser module linewidth testing device according to claim 2, characterized in that: The rotating shaft (3) includes a first connecting section (31) and a second connecting section (32). The diameter of the second connecting section (32) is larger than the diameter of the first connecting section (31). The first connecting section (31) passes through the support part (2), and the second connecting section (32) passes through the rotating part (1) and abuts against the side of the support part (2) near the rotating part (1).
4. The multi-line laser module linewidth testing device according to claim 3, characterized in that: The rotating shaft (3) further includes a third connecting section (33), the diameter of which is larger than that of the second connecting section (32). The third connecting section (33) is located on the side of the rotating part (1) away from the support part (2). A spring (5) is also sleeved on the second connecting section (32). The two ends of the spring (5) abut against the rotating part (1) and the third connecting section (33) respectively. When the spring (5) is compressed, the side of the third connecting section (33) away from the second connecting section (32) is configured to abut against the multi-line laser module.
5. The multi-line laser module linewidth testing device according to claim 4, characterized in that: The rotating part (1) includes an L-shaped first extension (12) and a second extension (13). The first extension (12) is fixedly connected to the multi-line laser module. The rotating shaft (3) passes through the second extension (13) and the support part (2). The thrust bearing (4) is disposed in the second extension (13) and the support part (2). The third connecting section (33) is disposed on the side of the second extension (13) away from the support part (2). A rotating bearing (6) is sleeved on the spring (5). The rotating bearing (6) is disposed in the second extension (13).
6. The multi-line laser module linewidth testing device according to claim 5, characterized in that: The support part (2) includes an L-shaped third extension (22) and a fourth extension (23). The first extension (12) is disposed opposite to the third extension (22), and the second extension (13) is disposed opposite to the fourth extension (23). The rotating shaft (3) passes through the second extension (13) and the fourth extension (23). A rotating block (8) is disposed on the second extension (13), and an auxiliary rotating bearing (7) is disposed on the fourth extension (23). The central axis of the auxiliary rotating bearing (7) is parallel to the central axis of the rotating shaft (3). The auxiliary rotating bearing (7) can rotate relative to the fourth extension (23). When the rotating part (1) rotates, the rotating block (8) abuts against the outer surface of the auxiliary rotating bearing (7).
7. The multi-line laser module linewidth testing device according to claim 1, characterized in that: The rotating part (1) is provided with a rotating handle (14).
8. The multi-line laser module linewidth testing device according to claim 1, characterized in that: The rotating part (1) is provided with a fixing member (9), the fixing member (9) has a laser module receiving cavity (91), and the multi-line laser module is fixed in the laser module receiving cavity (91).
9. The multi-line laser module linewidth testing device according to claim 1, characterized in that: The shooting assembly (110) includes an industrial camera (111), an angle displacement stage (112), and a three-axis displacement stage (113). The angle displacement stage (112) is mounted on the three-axis displacement stage (113), and the industrial camera (111) is mounted on the angle displacement stage (112).
10. The multi-line laser module linewidth testing device according to claim 1, characterized in that: It also includes an optical breadboard (120), on which the rotating part (1), the supporting part (2), the lighting plate (100) and the shooting component (110) are all disposed.