Quality detection platform for laser beam expander

Abstract

The utility model discloses a quality detection platform for a laser beam expander, which comprises a bottom plate, a sliding rail is arranged at the top of the bottom plate, a laser emitter is arranged on the bottom plate, a first sliding plate and a second sliding plate are respectively arranged on the sliding rail in a sliding manner, a concave lens is arranged at the top of the first sliding plate, and a convex lens is arranged at the bottom of the second sliding plate. A convex lens is mounted at the top of the second sliding plate, two first fixing blocks are symmetrically mounted at the top of the second sliding plate, and an external threaded column is fixedly connected to one side of each first fixing block; during use, the first sliding plate and the second sliding plate are guided to slide through the sliding rail, light beams emitted by the laser emitter are expanded through the concave lens and the convex lens in sequence, the threaded rod can finely adjust the distance between the first sliding plate and the second sliding plate, the driving mechanism can conveniently and synchronously move the two sliding plates, and dynamic adjustment of a laser path is achieved. And the quality detection precision of the beam expander is improved.

Description

Technical Field

[0001] This utility model relates to the field of laser beam expander technology, specifically to a quality inspection platform for laser beam expanders. Background Technology

[0002] A laser beam expander is an optical device used to adjust the diameter and divergence angle of a laser beam. It typically consists of two or more lenses combined to expand the laser beam to a larger diameter, thereby reducing the beam divergence angle and improving beam quality in long-distance transmission or precision machining. Beam expanders are widely used in laser marking, lidar, optical communication, and scientific research, and are a key component of high-performance laser systems.

[0003] However, existing laser beam expanders generally rely on manual adjustment of lens positions during quality inspection, lacking an effective linkage structure. This makes it impossible to achieve synchronous or dynamic adjustment of the spacing between optical elements, resulting in poor laser path control accuracy. Consequently, they are unable to adapt to the testing requirements under different laser parameters, affecting the accuracy of beam expansion quality analysis and the system's application flexibility. Utility Model Content

[0004] This utility model aims to solve at least one of the technical problems existing in the prior art.

[0005] Therefore, one objective of this utility model is to provide a quality inspection platform for laser beam expanders. This platform can use a threaded rod to fine-tune the distance between the first and second sliding plates, and use a drive mechanism to drive the second sliding plate individually or move both sliding plates synchronously, which facilitates dynamic adjustment of the laser path and improves the quality inspection accuracy of the beam expander.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a quality inspection platform for a laser beam expander, comprising a base plate, a slide rail mounted on the top of the base plate, a laser emitter mounted on the base plate, a first slide plate and a second slide plate slidably mounted on the slide rail, a concave lens mounted on the top of the first slide plate, a convex lens mounted on the top of the second slide plate, two first fixing blocks symmetrically mounted on the top of the second slide plate, an external threaded post fixedly connected to one side of each first fixing block, four second fixing blocks symmetrically mounted on the top of the first slide plate, a threaded rod threadedly connected to each pair of adjacent second fixing blocks, an internal threaded cylinder mounted at one end of each threaded rod via a bearing, the internal thread of the internal threaded cylinder matching the external thread of the external threaded post, and a drive mechanism for moving the second slide plate mounted on the top of the base plate.

[0007] Preferably, the drive mechanism includes a motor, which is mounted on the top of the base plate. The rotating shaft of the motor is fixedly connected to a lead screw, one end of which passes through the second slide plate.

[0008] Preferably, a light-shielding plate is fixedly connected to one side of the base plate.

[0009] Preferably, a handle is fixedly connected to the end of the threaded rod away from the internal threaded cylinder.

[0010] Preferably, a fireproof plate is installed on one side of the light-shielding plate.

[0011] Preferably, a stop block is fixedly connected to the top of the base plate, and the end of the lead screw is rotatably mounted on one side of the stop block.

[0012] Compared with the prior art, the beneficial effects of this utility model are: this utility model guides the first and second sliding plates to slide through a slide rail, the laser emitter emits a beam that is expanded by a concave lens and a convex lens in sequence, and the threaded rod can finely adjust the distance between the first and second sliding plates, which facilitates the synchronous movement of the two sliding plates by the drive mechanism, realizes dynamic adjustment of the laser path, and improves the accuracy of beam expander quality detection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a quality inspection platform for a laser beam expander according to an embodiment of the present invention;

[0014] Figure 2 This is a schematic diagram of another perspective of the quality inspection platform for laser beam expanders according to an embodiment of the present invention;

[0015] Figure 3 This is a cross-sectional structural diagram of the first and second sliding plates in the quality inspection platform for a laser beam expander according to an embodiment of the present invention.

[0016] Figure 4 This is an embodiment of the present utility model. Figure 2 A magnified structural diagram of part A in the middle.

[0017] In the diagram: 1. Base plate; 2. Light shield; 3. Slide rail; 4. First slide plate; 5. Second slide plate; 6. Motor; 7. Lead screw; 8. First fixing block; 9. Second fixing block; 10. Threaded rod; 11. Handle; 12. Concave lens; 13. Convex lens; 14. Stop block; 15. Laser emitter; 16. Fireproof plate; 17. External threaded column; 18. Internal threaded cylinder. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1 An embodiment of this utility model provides a quality inspection platform for a laser beam expander, comprising: a base plate 1 and a slide rail 3.

[0020] Among them, such as Figures 1-3 As shown, the slide rail 3 is installed on the top of the base plate 1. A laser emitter 15 is installed on the base plate 1. A first slide plate 4 and a second slide plate 5 are slidably installed on the slide rail 3. A concave lens 12 is installed on the top of the first slide plate 4, and a convex lens 13 is installed on the top of the second slide plate 5. In use, the base plate 1 serves as the overall support, and the slide rail 3 is used to guide the sliding of the first slide plate 4 and the second slide plate 5. The laser emitter 15 emits a laser beam, which passes through the concave lens 12 on the first slide plate 4 and the convex lens 13 on the second slide plate 5 in sequence, thereby expanding the beam and facilitating intuitive detection of the beam quality.

[0021] Furthermore, a light-shielding plate 2 is fixedly connected to one side of the base plate 1, and a fireproof plate 16 is installed on one side of the light-shielding plate 2. The light-shielding plate 2 can block the emitted laser, and the fireproof plate 16 can prevent the high temperature of the laser from damaging the light-shielding plate 2.

[0022] In this embodiment, as Figures 1-4 As shown, two first fixing blocks 8 are symmetrically installed on the top of the second slide plate 5. An external threaded post 17 is fixedly connected to one side of the first fixing block 8. Four second fixing blocks 9 are symmetrically installed on the top of the first slide plate 4. A threaded rod 10 is threadedly connected to each pair of adjacent second fixing blocks 9. An internal threaded cylinder 18 is installed at one end of the threaded rod 10 through a bearing. The internal thread of the internal threaded cylinder 18 matches the external thread of the external threaded post 17. A drive mechanism for driving the second slide plate 5 to move is installed on the top of the base plate 1.

[0023] In use, the second slide plate 5 can be electrically driven to adjust its position on the slide rail 3 through the drive mechanism, controlling the divergence angle of the laser after passing through the lens assembly. In addition, the threaded rod 10 passes through the second fixed block 9 and is connected to the internal threaded cylinder 18 through the bearing. After the first slide plate 4 slides and adjusts its position on the slide rail 3, the internal threaded cylinder 18 at its end is moved closer to the external threaded post 17 by rotating the threaded rod 10, and the internal threaded cylinder 18 is threaded onto the external threaded post 17, thereby establishing a connection between the first slide plate 4 and the second slide plate 5. The distance between the first slide plate 4 and the second slide plate 5 can be changed by adjusting the threaded rod 10.

[0024] like Figure 1 As shown, the drive mechanism includes a motor 6, which is mounted on the top of the base plate 1. The rotating shaft of the motor 6 is fixedly connected to a lead screw 7. One end of the lead screw 7 passes through the second slide plate 5. When the motor 6 is in use, it can drive the lead screw 7 to rotate, thereby causing the second slide plate 5 on the lead screw 7 to move laterally along the slide rail 3.

[0025] Furthermore, a handle 11 is fixedly connected to the end of the threaded rod 10 away from the internal threaded cylinder 18, and the handle 11 can easily rotate the threaded rod 10.

[0026] like Figure 1 and Figure 2 As shown, a stop block 14 is fixedly connected to the top of the base plate 1, and the end of the lead screw 7 is rotatably mounted on one side of the stop block 14. The stop block 14 can provide support and stability for the end of the lead screw 7.

[0027] Based on the above technical solution, the working steps of this solution are summarized as follows: When in use, the base plate 1 serves as the overall support, the slide rail 3 is used to guide the sliding of the first slide plate 4 and the second slide plate 5, and the laser emitter 15 emits a laser beam that passes through the concave lens 12 on the first slide plate 4 and the convex lens 13 on the second slide plate 5 in sequence to expand the beam and facilitate intuitive detection of the beam quality.

[0028] The drive mechanism can be electrically driven to adjust the position of the second slide plate 5 on the slide rail 3, controlling the divergence angle of the laser beam after passing through the lens assembly. In addition, the threaded rod 10 passes through the second fixed block 9 and is connected to the internal threaded cylinder 18 through the bearing. After the first slide plate 4 slides and adjusts its position on the slide rail 3, the internal threaded cylinder 18 at its end is moved closer to the external threaded post 17 by rotating the threaded rod 10, and the internal threaded cylinder 18 is threaded onto the external threaded post 17, thereby establishing a connection between the first slide plate 4 and the second slide plate 5. Under the drive of the drive mechanism, the first slide plate 4 and the second slide plate 5 move simultaneously, changing the distance between the laser beam entering the convex lens 13 and the concave lens 12.

Claims

1. A quality inspection platform for a laser beam expander, comprising a base plate (1), a slide rail (3) mounted on the top of the base plate (1), and a laser emitter (15) mounted on the base plate (1), characterized in that: The slide rail (3) is slidably mounted with a first slide plate (4) and a second slide plate (5). A concave lens (12) is mounted on the top of the first slide plate (4), and a convex lens (13) is mounted on the top of the second slide plate (5). Two first fixing blocks (8) are symmetrically mounted on the top of the second slide plate (5). An external threaded column (17) is fixedly connected to one side of the first fixing block (8). Four second fixing blocks (9) are symmetrically mounted on the top of the first slide plate (4). A threaded rod (10) is threadedly connected to each pair of adjacent second fixing blocks (9). An internal threaded cylinder (18) is mounted on one end of the threaded rod (10) through a bearing. The internal thread of the internal threaded cylinder (18) matches the external thread of the external threaded column (17). A drive mechanism for driving the second slide plate (5) to move is mounted on the top of the base plate (1).

2. The quality inspection platform for laser beam expanders according to claim 1, characterized in that: The driving mechanism includes a motor (6), which is mounted on the top of the base plate (1). The rotating shaft of the motor (6) is fixedly connected to a lead screw (7), and one end of the lead screw (7) passes through the second slide plate (5).

3. The quality inspection platform for laser beam expanders according to claim 1, characterized in that: A light-shielding plate (2) is fixedly connected to one side of the base plate (1).

4. The quality inspection platform for laser beam expanders according to claim 1, characterized in that: A handle (11) is fixedly connected to the end of the threaded rod (10) away from the internal threaded cylinder (18).

5. A quality inspection platform for laser beam expanders according to claim 3, characterized in that: A fireproof plate (16) is installed on one side of the light-shielding plate (2).

6. A quality inspection platform for laser beam expanders according to claim 2, characterized in that: A stop block (14) is fixedly connected to the top of the base plate (1), and the end of the lead screw (7) is rotatably installed on one side of the stop block (14).

Images