Coaxial light path structure of laser ranging module

Abstract

The utility model relates to the technical field of laser ranging, in particular to a coaxial light path structure of a laser ranging module, which comprises a shell and a coaxial light path mechanism, an eyepiece and an objective lens are respectively arranged at two ends of the shell, and the coaxial light path mechanism is arranged in the shell; the beneficial effects are that the connecting cover and the folding cover are limited at the outer side of the objective lens, then the butt joint pipe is rotated, the butt joint pipe pulls the connecting rod through the connecting ring, and the connecting covers are rotated towards the outer side, so that interference to laser signals is reduced, and enough light is kept to enter to support the requirement of laser ranging; the coaxial optical path structure of the laser ranging module is not easily interfered by strong light, the limiting bolt is rotated, the connecting plate can be pulled outwards, the eyepiece and the objective lens can be quickly separated from the shell, the butt joint block and the butt joint groove are in butt joint, the limiting bolt and the limiting groove can be in positioning butt joint conveniently, and the eyepiece and the objective lens of the laser ranging module can be installed and replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of laser ranging, in particular to a coaxial optical path structure of a laser ranging module. Background Technique

[0002] The coaxial optical path structure of the laser ranging module can ensure that the emission and reception of the laser beam are along the same axis, enabling the ranging system to accurately locate the target object, improving the accuracy of ranging. Moreover, the coaxiality of the optical path structure can ensure the stability and consistency of the laser beam, reduce the interference of external factors on the beam transmission, improve the stability and reliability of the ranging system, and the coaxial optical path structure ensures that the receiver can accurately receive the optical signal reflected from the target, realizing the accurate measurement of the target distance;

[0003] In order to achieve the accurate measurement of the target distance, the laser ranging module will adopt a coaxial optical path structure for measurement. Moreover, the laser ranging module is often used in outdoor environments, making the laser ranging module easily in an environment with strong light, and is easily interfered by sunlight, vehicle headlights, or other strong lights. The environment with strong light will interfere with the signal received by the laser sensor, resulting in a decrease in the signal quality, thereby affecting the accuracy and stability of the laser ranging module. Therefore, we propose a coaxial optical path structure of a laser ranging module. Content of the Utility Model

[0004] The purpose of the utility model is to provide a coaxial optical path structure of a laser ranging module to solve the problem that the environment with strong light will interfere with the signal received by the laser sensor, resulting in a decrease in the signal quality, thereby affecting the accuracy and stability of the laser ranging module as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A coaxial optical path structure of a laser ranging module, including a housing and a coaxial optical path mechanism. The two ends of the housing are respectively provided with an eyepiece and an objective lens, and a coaxial optical path mechanism is arranged inside the housing. The coaxial optical path mechanism includes a transmitter, an optical path refraction component, and a receiver. The transmitter, the optical path refraction component, and the receiver are sequentially installed inside the housing.

[0006] Preferably, a docking cover is butted at one end of the housing close to the objective lens, and a first thread groove and a second thread groove are respectively opened on the inner side and the outer side of the docking cover, and a connecting pad is adhered to one side of the docking cover close to the first thread groove.

[0007] Preferably, a docking pipe is butted on the outer side of the second thread groove of the docking cover, and one side of the docking pipe is movably connected with a connecting ring through a bearing.

[0008] Preferably, one side of the connecting ring is movably connected to one end of the connecting rod via a rotating shaft, and one end of the connecting rod away from the connecting ring is movably connected to a support block outside the connecting cover via a rotating shaft.

[0009] Preferably, one side of the connecting cover is movably connected to the docking cover via a rotating shaft, and adjacent sides of the two connecting covers are fixed to the folding cover at the same time.

[0010] Preferably, connecting plates are fixed to the outer sides of the eyepiece and the objective lens respectively, and a docking groove and a limiting groove are respectively provided on one side of the housing close to the connecting plate.

[0011] Preferably, a limiting bolt passes through the interior of the connecting plate, and one end of the limiting bolt is connected to the limiting groove, and the docking groove is connected to the docking block.

[0012] Preferably, the docking block is fixed to the connecting plate, and a first magnetic block is embedded in one end of the docking block, and a second magnetic block is embedded in a side of the docking groove close to the first magnetic block.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The coaxial optical path structure of the laser ranging module proposed by the utility model limits the connection cover and the folding cover to the outside of the objective lens, and then rotates the docking tube to make the docking tube pull the connecting rod through the connecting ring to make each connection cover rotate outward, thereby reducing the interference to the laser signal and keeping enough light entering to support the demand of laser ranging, so that the coaxial optical path structure of the laser ranging module is not easily interfered by strong light, and the limit bolt can be rotated to pull the connecting plate outward, so that the eyepiece and the objective lens can be quickly separated from the shell, and the docking block is docked with the docking groove, so that the limit bolt is easy to be positioned and docked with the limit groove, so that the laser ranging module is easy to install and replace the eyepiece and the objective lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the right side cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of the docking cover and the docking tube of the utility model;

[0018] Figure 4 For this utility model Figure 1 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] In the figure: 1. Outer shell; 101. Eyepiece; 102. Objective lens; 2. Coaxial optical path mechanism; 201. Transmitter; 202. Optical path refraction component; 203. Receiver; 3. Docking cover; 301. First thread groove; 302. Second thread groove; 303. Connection pad; 304. Docking pipe; 305. Connection ring; 306. Connecting rod; 307. Connection cover; 308. Folding cover; 4. Connection plate; 401. Docking groove; 402. Limiting groove; 403. Limiting bolt; 404. Docking block; 405. First magnet; 406. Second magnet. Detailed implementation mode

[0020] In order to clearly and completely describe the purpose, technical solution of the present utility model and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0021] Embodiment 1

[0022] Please refer to Figures 1 to 3 , the present utility model provides a technical solution: a coaxial optical path structure of a laser ranging module, including an outer shell 1 and a coaxial optical path mechanism 2. An eyepiece 101 and an objective lens 102 are respectively arranged at both ends of the outer shell 1, and a coaxial optical path mechanism 2 is arranged inside the outer shell 1. The coaxial optical path mechanism 2 includes a transmitter 201, an optical path refraction component 202 and a receiver 203. The transmitter 201, the optical path refraction component 202 and the receiver 203 are sequentially installed inside the outer shell 1. One end of the outer shell 1 close to the objective lens 102 is docked with a docking cover 3, and a first thread groove 301 and a second thread groove 302 are respectively opened on the inner side and the outer side of the docking cover 3. A connection pad 303 is adhered to one side of the docking cover 3 close to the first thread groove 301. A docking pipe 304 is docked on the outer side of the second thread groove 302 of the docking cover 3. One side of the docking pipe 304 is movably connected with a connection ring 305 through a bearing. One end of the connection ring 305 is movably connected with one end of a connecting rod 306 through a rotating shaft. The end of the connecting rod 306 far from the connection ring 305 is movably connected with a support block on the outer side of a connection cover 307 through a rotating shaft. One side of the connection cover 307 is movably connected with the docking cover 3 through a rotating shaft. The adjacent sides of the two connection covers 307 are simultaneously fixed to a folding cover 308. A limiting thread groove is opened on the outer side of the outer shell 1, and the outer shell 1 is in threaded connection with the first thread groove 301. The second thread groove 302 is in threaded connection with the docking pipe 304. The connection pad 303 is made of rubber material, and the folding cover 308 is made of deformable plastic material.

[0023] In specific implementation, according to Figures 1 to 3 , in order to accurately measure the distance to the target, the laser ranging module uses a coaxial optical path structure for measurement. When the laser ranging module is used in an outdoor environment, the docking cover 3 is rotationally docked with the housing 1. By providing a limiting thread groove on the outer side of the housing 1, and the housing 1 is threadedly connected to the first thread groove 301, the housing 1 and the docking cover 3 are restricted together. Since the connecting pad 303 is made of rubber and has a certain deformation ability, it is convenient for the staff to hold the docking cover 3 and rotate it, so that the connecting cover 307 and the folding cover 308 are restricted outside the objective lens 102. At this time, the staff can rotate the docking tube 304. Since the second thread groove 302 is threadedly connected to the docking tube 304, the docking tube 304 moves along the outer side of the housing 1, causing the docking tube 304 to pull the connecting rod 306 through the connecting ring 305, so that the connecting rod 306 drives the outer side of the connecting cover 307 to move, and each connecting cover 307 rotates outward. Since the folding cover 308 is made of deformable plastic material, the connecting cover 307 drives the folding cover 308 to extend, expanding the light-shielding range of the connecting cover 307 and the folding cover 308, so that the connecting cover 307 and the folding cover 308 can block more light from the surrounding environment, thereby reducing the interference with the laser signal and maintaining sufficient light entering to support the requirements of laser ranging, making the coaxial optical path structure of the laser ranging module not easily affected by strong light interference and not easily causing a decrease in the signal quality, and facilitating maintaining accuracy and stability.

[0024] Embodiment 2

[0025] On the basis of Embodiment 1, please refer to Figure 1 , Figure 2 and Figure 4 , the present utility model provides a technical solution: connecting plates 4 are respectively fixed on the outer sides of the eyepiece 101 and the objective lens 102. Docking grooves 401 and limiting grooves 402 are respectively provided on one side of the housing 1 close to the connecting plates 4. A limiting bolt 403 penetrates through the inside of the connecting plate 4, and one end of the limiting bolt 403 is docked with the limiting groove 402. The docking groove 401 is docked with the docking block 404. The docking block 404 is fixed to the connecting plate 4, and a first magnet 405 is embedded at one end of the docking block 404. A second magnet 406 is embedded on one side of the docking groove 401 close to the first magnet 405. The inner wall spacing of the docking groove 401 matches the diameter of the docking block 404. The limiting groove 402 is threadedly connected to the limiting bolt 403, and the first magnet 405 and the second magnet 406 are magnetically attracted.

[0026] In specific implementation, according to Figure 1 , Figure 2 and Figure 4, when scratches or dirt are found on the eyepiece 101 and the objective lens 102 of the laser ranging module, the ranging effect of the laser ranging module will be affected. At this time, rotate the limit bolt 403. Since the limit slot 402 and the limit bolt 403 are in threaded connection, the limit bolt 403 is disengaged from the limit slot 402. At this time, the connecting plate 4 can be pulled outwards, so that the first magnet 405 and the second magnet 406 are pulled outwards to disengage from the magnetic attraction, and the eyepiece 101 and the objective lens 102 can be quickly detached from the housing 1. Then, install new eyepiece 101 and objective lens 102, and dock the docking block 404 with the docking groove 401. Since the inner wall spacing of the docking groove 401 matches the diameter of the docking block 404, the docking block 404 is not easy to shake inside the docking groove 401, the first magnet 405 and the second magnet 406 are attracted and restricted together, and the limit bolt 403 is convenient for positioning and docking with the limit slot 402, so that the eyepiece 101 and the objective lens 102 are convenient to be installed with the housing 1, and the laser ranging module is convenient to install and replace the eyepiece 101 and the objective lens 102.

[0027] During actual use, the docking cover 3 is restricted with the housing 1, so that the connecting cover 307 and the folding cover 308 are restricted outside the objective lens 102. Then, rotate the docking tube 304, and the docking tube 304 pulls the connecting rod 306 through the connecting ring 305, so that each connecting cover 307 rotates outwards, and the connecting cover 307 and the folding cover 308 expand the light-shielding range, thereby reducing the interference with the laser signal and keeping enough light entering to support the requirements of laser ranging, making the coaxial optical path structure of the laser ranging module not easily affected by strong light interference, and being convenient to maintain accuracy and stability. Rotate the limit bolt 403, the connecting plate 4 can be pulled outwards, the eyepiece 101 and the objective lens 102 can be quickly detached from the housing 1, the docking block 404 is docked with the docking groove 401, and the limit bolt 403 is convenient for positioning and docking with the limit slot 402, so that the eyepiece 101 and the objective lens 102 are convenient to be installed with the housing 1, and the laser ranging module is convenient to install and replace the eyepiece 101 and the objective lens 102.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coaxial optical path structure of a laser ranging module, comprising a housing (1) and a coaxial optical path mechanism (2), characterized in that: An eyepiece (101) and an objective lens (102) are respectively arranged at two ends of the housing (1), and a coaxial optical path mechanism (2) is arranged inside the housing (1), the coaxial optical path mechanism (2) comprising a transmitter (201), an optical path refraction component (202) and a receiver (203), and the transmitter (201), the optical path refraction component (202) and the receiver (203) are sequentially installed inside the housing (1); An end of the housing (1) close to the objective lens (102) is butted against a butt joint cover (3), and a first thread groove (301) and a second thread groove (302) are respectively provided on the inner side and the outer side of the butt joint cover (3), and a connection pad (303) is bonded to a side of the butt joint cover (3) close to the first thread groove (301); The docking cover (3) is docked with a docking pipe (304) on the outer side of the second thread groove (302), and one side of the docking pipe (304) is movably connected to a connecting ring (305) via a bearing; One side of the connecting ring (305) is movably connected to one end of a connecting rod (306) via a rotating shaft, and one end of the connecting rod (306) away from the connecting ring (305) is movably connected to a support block outside the connecting cover (307) via a rotating shaft; One side of the connecting cover (307) is movably connected to the docking cover (3) via a rotating shaft, and adjacent sides of the two connecting covers (307) are simultaneously fixed to the folding cover (308).

2. The coaxial optical path structure of a laser ranging module according to claim 1, characterized in that: A connecting plate (4) is fixed to the outer side of the eyepiece (101) and the outer side of the objective lens (102), respectively, and a docking groove (401) and a limiting groove (402) are respectively provided on a side of the housing (1) close to the connecting plate (4).

3. The coaxial optical path structure of a laser ranging module according to claim 2, characterized in that: A limiting bolt (403) passes through the interior of the connection plate (4), and one end of the limiting bolt (403) is connected to the limiting groove (402), and the docking groove (401) is connected to the docking block (404).

4. The coaxial optical path structure of a laser ranging module according to claim 3, characterized in that: The docking block (404) is fixed to the connecting plate (4), and a first magnetic block (405) is embedded at one end of the docking block (404), and a second magnetic block (406) is embedded at a side of the docking groove (401) close to the first magnetic block (405).

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