Device for rapidly detecting planeness of multi-surface reflecting mirror

Abstract

A device for rapidly detecting the flatness of a multi-face reflector comprises a base, a sliding rail is transversely arranged on the base, the length of the sliding rail is the same as that of the base, a fixing block is arranged at the position, located above the sliding rail, of one side of the base, the fixing block is provided with a rotating disc used for containing the reflector, and the rotating disc is provided with a sliding block. The turntable is rotationally connected with the fixed block, an aberration elimination lens is arranged on the fixed block and located on one side of the turntable, and a laser emitting assembly capable of moving left and right on the sliding rail is arranged on the sliding rail and located on the other side of the base; a receiving screen used for receiving light spots of the reflecting mirror is further arranged on the base and located on the side of the laser emitting assembly. Through the cooperation of the laser emitter, the spectroscope, the aberration elimination lens and the receiving screen, the planeness of the multi-surface reflector can be rapidly detected without damaging the multi-surface reflector, the detection efficiency is improved, the structure is simple, and the operation is simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of mirror testing technology, and in particular to a device for rapid testing of the flatness of multi-faceted mirrors. Background Technology

[0002] Multifaceted mirrors are a crucial component of lidar systems, and the flatness of their surfaces plays a vital role in the lidar's accuracy. Therefore, flatness testing is required during the production process to meet corresponding flatness and high-precision requirements. Currently used flatness testing equipment includes contact-type coordinate measuring machines (CMMs) and non-contact laser interferometers. CMMs, being contact-type, can damage high-precision surfaces due to contact force, leading to product scrap and hindering full inspection after production. Non-contact laser interferometers, on the other hand, are costly, have stringent environmental requirements, and typically require 2-3 minutes to test a single multifaceted mirror, impacting production efficiency. Therefore, we designed a rapid flatness testing device for multifaceted mirrors that can quickly complete the testing without damaging the mirror's surface. Utility Model Content

[0003] The purpose of this invention is to provide a device for rapid detection of the flatness of multi-faceted mirrors, enabling the rapid detection of the flatness of multi-faceted mirrors.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] This utility model proposes a device for rapid detection of the flatness of a multi-faceted reflector, including a base, a slide rail horizontally arranged on the base with the same length as the base, a fixing block above the slide rail on one side of the base, a turntable for placing the reflector on the fixing block, the turntable being rotatably connected to the fixing block, an anti-aliasing lens on one side of the turntable on the fixing block, a laser emitting component that can move left and right on the slide rail on the other side of the base, and a receiving screen for receiving the light spot from the reflector on the base next to the laser emitting component.

[0006] Furthermore, the bottom of the fixing block is provided with a through hole, and the slide rail passes through the through hole.

[0007] Furthermore, the laser emitting assembly includes a laser emitter and a beam splitter with the emitting end of the laser emitter. A sliding block is provided on the slide rail, and both the laser emitter and the beam splitter are mounted on the sliding block to move left and right.

[0008] Furthermore, the receiving screen is fixed to the movable block via a connecting plate.

[0009] Furthermore, the movable block is also provided with a handle for fixing the position of the movable block.

[0010] The beneficial effects of this utility model are as follows: by combining a laser emitter, a beam splitter, an anti-aliasing lens, and a receiving screen, the flatness of a multi-faceted mirror can be quickly detected without damaging the multi-faceted mirror, thus improving the detection efficiency. Moreover, the structure is simple and the operation is easy, making it suitable for similar multi-faceted mirror products. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a front view of the present invention;

[0013] Figure 3 This is a rear view of the present invention;

[0014] Figure 4 This is a top view of the present invention;

[0015] Figure 5 This is the left view of the present invention;

[0016] Figure 6 This is a schematic diagram of the laser reflection path;

[0017] Figure 7 This is a schematic diagram of a multifaceted mirror.

[0018] In the diagram, 1-base, 2-slide rail, 3-fixed block, 4-reflector, 5-turntable, 6-alteration lens, 7-receiving screen, 8-through hole, 9-laser emitter, 10-beam splitter, 11-moving block, 12-connecting plate, 13-handle, 14-laser. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Please see Figures 1 to 7 This utility model provides an embodiment:

[0021] Please see Figure 1 and Figure 2A device for rapid detection of the flatness of a multi-faceted mirror includes a base 1, a slide rail 2 horizontally arranged on the base 1 with the same length as the base 1, a fixing block 3 above the slide rail 2 on one side of the base 1, a turntable 5 for placing a mirror 4 on the fixing block 3, the turntable 5 being rotatably connected to the fixing block 3, an anti-aliasing lens 6 on one side of the turntable 5 on the fixing block 3, a laser emitting component that can move left and right on the slide rail 2 on the other side of the base 1, and a receiving screen 7 for receiving the light spot of the mirror 4 on the base 1 next to the laser emitting component.

[0022] Please see Figure 1 and Figure 5 The bottom of the fixing block 3 has a through hole 8, and the slide rail 2 passes through the through hole 8. The fixing block 3 is fixed to the base 1, and the slide rail 2 passes through the through hole 8 at the bottom of the fixing block 3 without contacting it.

[0023] Please see Figure 1 and Figure 4 The laser emitting assembly includes a laser emitter 9 and a beam splitter 10 with the emitting end of the laser emitter 9. A sliding block 11 is mounted on the slide rail 2, allowing both the laser emitter 9 and the beam splitter 10 to move left and right on the sliding block 11. Operators can adjust the distance between the laser emitter 9 and the beam splitter 10 and the reflector 4 by moving the sliding block 11, thereby observing the state of the light spot on the receiving screen 7.

[0024] Please see Figure 1 and Figure 3 The receiving screen 7 is fixed to the moving block 11 via a connecting plate 12. When the moving block 11 moves on the slide rail 2, it will drive the receiving screen 7 to move synchronously.

[0025] Please see Figure 1 The movable block 11 is also provided with a handle 13 for fixing the position of the movable block 11. When it is necessary to fix the position of the movable block 11, the movable block 11 can be fixed by pressing down the handle 13.

[0026] Working principle: When the laser emitter 9 is turned on, the laser 14 emitted by the laser emitter 9 first passes through the beam splitter 10 located at the emitting end of the laser emitter 9. When the laser 14 passes through the beam splitter 10, the beam splitter 10 transmits 50% of the laser 14 into the aberration lens 6. The aberration lens 6 then transmits the laser 14 to the highly reflective surface of the reflecting mirror 4. The aberration lens 6 can reduce stray light transmitted by the laser 14, correct imaging aberrations, and make the light spot image clearer. Subsequently, the highly reflective surface of the reflecting mirror 4 reflects the laser 14, and the reflected laser 14 is reflected by the aberration lens 6 back into the beam splitter 10. The beam splitter 10 will reflect 50% of the laser 14 onto the receiving screen 7, creating a light spot on the receiving screen 7. Since the laser 14 is not collimated, the light spot on the receiving screen 7 is currently blurry. Next, the operator moves the moving block 11 slowly along the slide rail 2, observing the state of the light spot on the receiving screen 7 during this movement. When the light spot is clearly visible, it represents the optimal distance. Pressing down the handle 13 fixes the moving block 11 to the slide rail 2, preventing further movement, thus completing the distance adjustment. Rotating the turntable 5, the reflector 4 has four optical surfaces, such as... Figure 7 As shown, the staff can inspect each optical surface step by step and compare it on the receiving screen 7. The flatness of the reflector 4 can be detected. After the inspection is completed, the next reflector 4 to be inspected can be directly replaced on the turntable 5 without moving the moving block 11. The receiving screen 7 can be directly observed for inspection, which improves the inspection efficiency.

Claims

1. A device for rapid detection of flatness of a multi-faceted mirror, characterized by: The device includes a base, on which a horizontal slide rail is arranged, the slide rail being the same length as the base. A fixing block is located on one side of the base above the slide rail, and a turntable for placing the reflector is mounted on the fixing block. The turntable is rotatably connected to the fixing block. An anti-aliasing lens is mounted on the fixing block on one side of the turntable. A laser emitting component that can move left and right on the slide rail is mounted on the other side of the base. A receiving screen for receiving the light spot from the reflector is also mounted on the base next to the laser emitting component.

2. The device for rapid detection of the flatness of a multi-faceted mirror according to claim 1, characterized in that: The bottom of the fixing block has a through hole and the slide rail passes through the through hole.

3. The device for rapid detection of the flatness of a multi-faceted mirror according to claim 1, wherein: The laser emitting assembly includes a laser emitter and a beam splitter with the emitting end of the laser emitter. A sliding block is provided on the slide rail, and both the laser emitter and the beam splitter are mounted on the sliding block to move left and right.

4. The device for rapid detection of the flatness of a multi-faceted mirror according to claim 3, characterized in that: The receiving screen is fixed to the moving block via a connecting plate.

5. The device for rapid detection of the flatness of a multi-faceted mirror according to claim 3, characterized in that: The movable block is also equipped with a handle for fixing its position.

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