Lens group for laser radar

Abstract

The utility model discloses a lens group for a laser radar, which comprises a carrier plate, a collimating lens clamped on one side of the top of the carrier plate, a lens clamped on the other side of the top of the carrier plate, a spectroscope clamped on one side of the top of the carrier plate close to the collimating lens, and a reflector clamped on one side of the top of the carrier plate close to the lens. The collimating mirror, the spectroscope, the homogenizing mirror, the reflector and the lens all comprise mounting frames and lenses mounted in the middles of the mounting frames, fixing grooves are formed in the two sides of the side faces of the mounting frames, and first reinforcing ribs are embedded in the fixing grooves; according to the lens group used for the laser radar, each lens body of the lens group is effectively reinforced, the lens group is firmer and more durable, the lens group is not prone to collision and damage in the installation and use process, the lens body is not prone to damage, and the service life of the lens group is prolonged. And the service life of the lens group is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of laser radar, in particular to a lens group used for laser radar. Background Art

[0002] LiDAR is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of a target. Its working principle is to transmit a detection signal (laser beam) to the target, and then compare the received signal reflected from the target (target echo) with the transmitted signal. After appropriate processing, relevant information about the target can be obtained, such as target distance, direction, altitude, speed, attitude, shape and other parameters, so as to detect, track and identify targets such as aircraft and missiles. It consists of a laser transmitter, an optical receiver, a turntable and an information processing system. The laser converts electrical pulses into light pulses and transmits them. The optical receiver then converts the light pulses reflected from the target into electrical pulses and sends them to the display. As a key component in LiDAR, the design and manufacturing quality of the lens group have an important impact on the performance of LiDAR.

[0003] The lens group of existing laser radars usually directly installs and uses some individual lenses such as collimators, spectrometers, homogenizers, and reflectors. The mirror body lacks protection. If the mirror body falls or bumps during use and installation, it will cause the mirror body to crack and be damaged, shortening its service life. Utility Model Content

[0004] The purpose of the utility model is to provide a lens group for laser radar, so as to solve the problem mentioned in the above background technology that the lens group of the existing laser radar usually directly installs and uses some single lenses such as collimating mirrors, spectrometers, homogenizing mirrors, and reflectors, and the mirror body lacks protection. If the mirror body falls or bumps during use and installation, it will cause the mirror body to crack and be damaged, thereby shortening the service life.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lens group for laser radar, including a carrier plate, a collimator mirror is clamped on one side of the top of the carrier plate, a lens is clamped on the other side of the top of the carrier plate, a beam splitter is clamped on the side of the top of the carrier plate close to the collimator mirror, a reflector is clamped on the side of the top of the carrier plate close to the lens, a homogenizer is clamped on the top of the carrier plate between the beam splitter and the reflector, the collimator mirror, the beam splitter, the homogenizer, the reflector and the lens all include a mounting frame and a lens mounted in the middle of the mounting frame, fixing grooves are provided on both sides of the side of the mounting frame, a first reinforcing rib is embedded in the inside of the fixing groove, the top of the side of the collimator mirror and the bottom of the side of the collimator mirror are fixedly connected to a second reinforcing rib, and a plurality of reinforcing sheets are connected to the middle of the second reinforcing rib.

[0006] As a preferred technical solution of the utility model, the bottom of the collimator, the bottom of the beam splitter, the bottom of the homogenizer, the bottom of the reflector and the bottom of the lens are all fixedly connected with a card block, and the top of the carrier plate is provided with a card slot matching the card block.

[0007] As a preferred technical solution of the utility model, the corners of the installation frame are provided with positioning grooves, and the corners on one side of the installation frame are fixedly connected with positioning columns corresponding to the positioning grooves. The positioning columns are snap-fitted with the positioning grooves, and the positioning columns and the positioning grooves facilitate stacking the mirror bodies together for installation and use.

[0008] As a preferred technical solution of the utility model, the surface of the installation frame is provided with installation screw holes for facilitating the installation of the installation frame, and the installation screw holes facilitate the positioning and installation of the installation frame.

[0009] As a preferred technical solution of the utility model, the lens includes a substrate layer, a heat-resistant layer and a wear-resistant layer. Both sides of the substrate layer are connected to the heat-resistant layer, and the side of the heat-resistant layer away from the substrate layer is connected to the wear-resistant layer.

[0010] As a preferred technical solution of the utility model, the substrate layer is made of plastic, the heat-resistant layer is made of polycarbonate, and the wear-resistant layer is made of polyvinyl chloride. The heat-resistant layer enhances the high temperature resistance of the lens, and the wear-resistant layer enhances the wear resistance of the lens.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] As needed, the collimating mirror, beam splitter, homogenizing mirror, reflector and lens on the carrier plate are removed and installed on the corresponding positions of the laser radar, and a mounting frame is set on the outside of each mirror body, a first reinforcing rib is installed on one side of the mounting frame, and the top and bottom are connected with a second reinforcing rib and a plurality of reinforcing sheets, and the fixing groove can protect the outside of the lens. The first reinforcing rib, the second reinforcing rib and the reinforcing sheet strengthen and reinforce the mounting frame, so that each mirror body of the lens group is effectively strengthened, more sturdy and durable, not easy to be bumped and damaged during installation and use, and the service life of the lens group is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 It is an enlarged structural diagram of the utility model A;

[0015] Figure 3 This is a top structural diagram of the carrier board of the utility model;

[0016] Figure 4 This is a structural diagram of one side of the collimating lens of the utility model;

[0017] Figure 5 This is a structural diagram of the lens of the utility model.

[0018] In the figure: 1. carrier plate; 2. collimator; 3. beam splitter; 4. homogenizer; 5. reflector; 6. lens; 7. lens; 8. positioning column; 9. positioning slot; 10. mounting screw hole; 11. mounting frame; 12. clamping block; 13. clamping slot; 14. fixing slot; 15. first reinforcing rib; 16. second reinforcing rib; 17. reinforcing sheet; 18. base material layer; 19. heat-resistant layer; 20. wear-resistant layer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5 The utility model provides a lens group for a laser radar, including a carrier plate 1, a collimator 2 is clamped on one side of the top of the carrier plate 1, a lens 6 is clamped on the other side of the top of the carrier plate 1, a beam splitter 3 is clamped on one side of the top of the carrier plate 1 close to the collimator 2, a reflector 5 is clamped on one side of the top of the carrier plate 1 close to the lens 6, a homogenizer 4 is clamped on the top of the carrier plate 1 between the beam splitter 3 and the reflector 5, the collimator 2, the beam splitter 3, the homogenizer 4, the reflector 5 and the lens 6 all include a mounting frame 11 and a lens 7 mounted in the middle of the mounting frame 11,

[0021] In this embodiment, during use, the collimator 2, the beam splitter 3, the homogenizer 4, the reflector 5, and the lens 6 on the carrier plate 1 are removed and installed on the corresponding positions of the laser radar as needed, and they can be fixed through the mounting screw holes 10 on the mounting frame 11.

[0022] Both sides of the side of the mounting frame 11 are provided with fixing grooves 14, and the inside of the fixing grooves 14 is embedded with first reinforcing ribs 15. The top of the side of the collimator 2 and the bottom of the side of the collimator 2 are fixedly connected with second reinforcing ribs 16, and the middle of the second reinforcing ribs 16 is connected with a plurality of reinforcing sheets 17. The bottom of the collimator 2, the bottom of the beam splitter 3, the bottom of the homogenizer 4, the bottom of the reflector 5 and the bottom of the lens 6 are fixedly connected with a card block 12, and the top of the carrier plate 1 is provided with a card slot 13 matching the card block 12;

[0023] In this embodiment, a mounting frame 11 is provided on the outer side of each mirror body, a first reinforcing rib 15 is installed on one side of the mounting frame 11, and a second reinforcing rib 16 is connected to the top and the bottom and a plurality of reinforcing sheets 17 are connected, the fixing groove 14 can protect the outer side of the lens 7, and the first reinforcing rib 15, the second reinforcing rib 16 and the reinforcing sheet 17 strengthen and reinforce the mounting frame 11.

[0024] See also Figure 1-5 The corners of the mounting frame 11 are provided with positioning grooves 9, and the corners on one side of the mounting frame 11 are fixedly connected with positioning columns 8 corresponding to the positioning grooves 9. The positioning columns 8 are snap-fitted with the positioning grooves 9, and the surface of the mounting frame 11 is provided with mounting screw holes 10 for facilitating the installation of the mounting frame 11.

[0025] See also Figure 1-5 The lens 7 includes a substrate layer 18, a heat-resistant layer 19 and a wear-resistant layer 20. Both sides of the substrate layer 18 are connected to the heat-resistant layer 19. The side of the heat-resistant layer 19 away from the substrate layer 18 is connected to the wear-resistant layer 20. The substrate layer 18 is made of plastic, the heat-resistant layer 19 is made of polycarbonate, and the wear-resistant layer 20 is made of polyvinyl chloride.

[0026] In this embodiment, the outer side of the lens 7 is connected to a heat-resistant layer 19 and a wear-resistant layer 20. The heat-resistant layer 19 improves the high temperature resistance of the lens 7, and the wear-resistant layer 20 enhances the surface wear resistance, so that the surface of the lens 7 is protected and more durable.

[0027] During specific use, the utility model is used for a lens group of a laser radar. During use, the collimating mirror 2, the beam splitter 3, the homogenizing mirror 4, the reflector 5, and the lens 6 on the carrier plate 1 are removed separately as needed and installed on the corresponding positions of the laser radar. They can be fixed through the mounting screw holes 10 on the mounting frame 11, and a mounting frame 11 is arranged on the outer side of each mirror body. A first reinforcing rib 15 is installed on one side of the mounting frame 11, and a second reinforcing rib 16 is connected to the top and the bottom and a plurality of reinforcing sheets 17 are connected. The fixing groove 14 can protect the outer side of the lens 7. The first reinforcing rib 15, the second reinforcing rib 16 and the reinforcing sheet 17 strengthen and reinforce the mounting frame 11, so that each mirror body of the lens group is effectively strengthened, more sturdy and durable, not easy to be bumped and damaged during installation and use, and the service life of the lens group is extended.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lens assembly for a laser radar, comprising a carrier plate (1), characterized in that: A collimator (2) is clamped on one side of the top of the carrier (1), a lens (6) is clamped on the other side of the top of the carrier (1), a beam splitter (3) is clamped on the side of the top of the carrier (1) close to the collimator (2), a reflector (5) is clamped on the side of the top of the carrier (1) close to the lens (6), a homogenizer (4) is clamped on the top of the carrier (1) between the beam splitter (3) and the reflector (5), and the collimator (2), the beam splitter (3), and the homogenizer (4) are clamped on the side of the top of the carrier (1) close to the lens (6). ), the reflector (5) and the lens (6) all comprise a mounting frame (11) and a lens (7) mounted in the middle of the mounting frame (11); both sides of the side of the mounting frame (11) are provided with fixing grooves (14); a first reinforcing rib (15) is embedded in the interior of the fixing groove (14); the top of the side of the collimator (2) and the bottom of the side of the collimator (2) are both fixedly connected with a second reinforcing rib (16); and a plurality of reinforcing sheets (17) are connected in the middle of the second reinforcing rib (16).

2. The lens assembly for laser radar according to claim 1, characterized in that: The bottom of the collimator (2), the bottom of the beam splitter (3), the bottom of the homogenizer (4), the bottom of the reflector (5) and the bottom of the lens (6) are all fixedly connected with a card block (12), and the top of the carrier (1) is provided with a card slot (13) matching the card block (12).

3. The lens assembly for laser radar according to claim 1, characterized in that: A positioning groove (9) is provided at a corner of the installation frame (11), and a positioning column (8) corresponding to the positioning groove (9) is fixedly connected to a corner of one side of the installation frame (11), and the positioning column (8) is clamped with the positioning groove (9).

4. The lens assembly for laser radar according to claim 1, characterized in that: The surface of the installation frame (11) is provided with installation screw holes (10) for facilitating installation of the installation frame (11).

5. The lens assembly for laser radar according to claim 1, characterized in that: The lens (7) comprises a substrate layer (18), a heat-resistant layer (19) and a wear-resistant layer (20), wherein both sides of the substrate layer (18) are connected to the heat-resistant layer (19), and the side of the heat-resistant layer (19) away from the substrate layer (18) is connected to the wear-resistant layer (20).

6. The lens assembly for laser radar according to claim 5, characterized in that: The substrate layer (18) is made of plastic, the temperature-resistant layer (19) is made of polycarbonate, and the wear-resistant layer (20) is made of polyvinyl chloride.

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