CN117607831A - Laser scanning structure and adjusting system thereof - Google Patents

Laser scanning structure and adjusting system thereof Download PDF

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Publication number
CN117607831A
CN117607831A CN202311323325.9A CN202311323325A CN117607831A CN 117607831 A CN117607831 A CN 117607831A CN 202311323325 A CN202311323325 A CN 202311323325A CN 117607831 A CN117607831 A CN 117607831A
Authority
CN
China
Prior art keywords
receiving
transmitting
gasket
base
main board
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311323325.9A
Other languages
Chinese (zh)
Inventor
谢斌斌
沈琳峰
胡欣露
郭颖
冯遇春
朱志伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangzhou Imi Bes Technology Co ltd
Original Assignee
Guangzhou Imi Bes Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Imi Bes Technology Co ltd filed Critical Guangzhou Imi Bes Technology Co ltd
Priority to CN202311323325.9A priority Critical patent/CN117607831A/en
Publication of CN117607831A publication Critical patent/CN117607831A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4817—Constructional features, e.g. arrangements of optical elements relating to scanning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/06—Systems determining position data of a target
    • G01S17/08—Systems determining position data of a target for measuring distance only
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4816—Constructional features, e.g. arrangements of optical elements of receivers alone

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

The invention discloses a laser scanning structure and a corresponding adjusting system, wherein the scanning structure mainly comprises: a base; the transmitting assembly is arranged at one side of the base and comprises a transmitting main board, a first gasket, a transmitting lens and a first locking piece, wherein the transmitting lens is used for allowing laser emitted by the transmitting main board to pass through, and the first gasket has elasticity; the receiving assembly is arranged on the other side of the base and is transversely arranged in parallel with the transmitting assembly, the receiving assembly comprises a receiving main plate, a second gasket, a receiving lens and a second locking piece, the second gasket is arranged between the receiving main plate and the base, and the second gasket has elasticity; the reflecting component is arranged in the middle of the base and comprises a polygon mirror, a motor, an adapter seat, a third gasket and a third locking piece. The height is reduced by optimizing the arrangement adjustment of the receiving and transmitting structure, and the longitudinal height of the four prisms is reduced, so that the arrangement of the receiving and transmitting structure is more compact, and the structure cost is reduced.

Description

Laser scanning structure and adjusting system thereof
Technical Field
The invention relates to the technical field of laser scanning, in particular to a laser scanning structure with a transverse parallel structure and a corresponding adjusting system.
Background
The laser radar is an active detection technology of optical mechanical electronic fusion, and is essentially characterized in that a beam of laser is emitted, the laser irradiates the target through the convergence and reflection of an optical lens, the light reflected by the target also reaches the photoelectric sensing position in a detector through the reflection and convergence of the optical lens, the time difference between the emitted light and the light reflected by the received target is calculated through photoelectric conversion, electric amplification and setting, the distance of the target is calculated according to the time difference, and various scanning mechanisms and measured angle data are combined to detect the outline and shape data of a target object or scene.
Due to the influence of shape difference of detected objects, environmental factors and the like, the volume of the laser radar needs to be reduced as much as possible under the condition of meeting test requirements so as to adapt to various scenes.
The laser radar has two paths: the laser radar comprises a transmitting light path and a receiving light path, wherein the transmitting light is a light path formed by transmitting light emitted by the laser radar, and the receiving light path is a light path formed by reflecting light after the transmitting light irradiates a target. The existing two paths of light paths are generally of a longitudinal arrangement structure, and the mode of the receiving and transmitting structure is fixed, so that the whole scanning structure cannot be reduced in size, a certain obstruction is formed for reducing the whole size of the laser radar, and the laser radar is not easy to adjust and use.
Disclosure of Invention
The invention aims to avoid the defects of the prior art, and provides a laser scanning structure which reduces the overall height of the laser radar on the premise of ensuring the performance and the precision of the laser radar, so that the laser scanning structure can be suitable for more working scenes and is convenient to adjust.
The invention solves the technical problems by adopting the following technical scheme: a laser scanning structure comprising:
a base;
the transmitting assembly is arranged on one side of the base and comprises a transmitting main board, a first gasket, a transmitting lens and a first locking piece, wherein the transmitting main board is connected to the base through the first locking piece, the first gasket is arranged between the transmitting main board and the base, the transmitting lens is used for allowing laser emitted by the transmitting main board to pass through, and the first gasket has elasticity;
the receiving assembly is arranged on the other side of the base and is transversely arranged in parallel with the transmitting assembly, the receiving assembly comprises a receiving main board, a second gasket, a receiving lens and a second locking piece, the receiving main board is connected to the base through the second locking piece, the second gasket is arranged between the receiving main board and the base, and the second gasket has elasticity;
the reflection assembly is arranged in the middle of the base and located between the emission assembly and the receiving assembly, the reflection assembly comprises a polygon mirror, a motor, an adapter seat, a third gasket and a third locking piece, the output end of the motor is connected with the adapter seat, the polygon mirror is connected with the adapter seat through the third locking piece, and the third gasket has elasticity.
In several embodiments, the base includes a bottom plate and mounting plates disposed on two sides of the bottom plate, two mounting plates are disposed in parallel, each mounting plate is provided with a mounting hole, and two mounting holes are respectively used for accommodating the transmitting lens and the receiving lens, and positions of the transmitting lens and the receiving lens correspond to each other.
In several embodiments, the first and second washers each have four corners with an aperture for a single first or second locking member to pass through, the center points of the first and second washers coinciding with the center point of the mounting hole.
In several embodiments, the output end of the motor is disposed vertically upward.
In several embodiments, the upper end of the adapter has a downward concave receiving groove for placing the third gasket and the third gasket portion protrudes outside the receiving groove.
In several embodiments, the third washer has three ends with a through hole for a single third locking member to pass through.
In several embodiments, the polygon is a four-prism, the four-prism has four evenly distributed mirror surfaces, and the center point of the four-prism coincides with the center points of the third gasket, the adapter and the output shaft of the motor.
In several embodiments, a protrusion is respectively disposed at four corners below the four prisms, and a photoelectric switch is disposed on the base, where the protrusion can rotate along with the four prisms and pass through the photoelectric switch.
The adjusting system of the laser scanning structure further comprises a concave mirror, target paper, a camera and a reflecting mirror, laser emitted by the emitting main board is reflected to the concave mirror through the reflecting component of the laser scanning structure, parallel light reflected by the reflecting mirror and reflected by the concave mirror is reflected to the target paper and the camera, and the distance between light spots on the target paper with scales is observed and calculated through the camera.
In several embodiments, the adjusting system includes an adjusting step of the emission light path, where the adjusting step includes placing the laser scanning structure at a side rear of the concave mirror, emitting laser by using a visible laser while emitting laser by the main board, after refraction by the concave mirror and reflection by the reflecting mirror, the light spot falls on the target paper with scales, and adjusting four locking pieces of the emission main board, so that the centers of the two light spots coincide, and thus the adjustment of the emission light path is completed.
The invention has the beneficial effects that:
the height is reduced by optimizing the arrangement adjustment of the receiving and transmitting structure, and the longitudinal height of the four prisms is reduced, so that the arrangement of the receiving and transmitting structure is more compact, and the structure cost is reduced.
The invention shortens the overall height of the laser radar on the basis of ensuring the test precision of the laser radar so as to meet the requirement of more test environments.
The invention has no blind spot in the short-distance test, is suitable for the brushless motor with moderate diameter and lower height, and ensures that the height of the four-prism is reduced under the condition of unchanged size.
The four prisms of the invention have four mutually perpendicular reflecting mirror surfaces, can increase the scanning frequency by four times, and the bulges at the bottoms of the four prisms can be matched with the photoelectric switch to accurately calculate the required scanning angle.
The invention can adjust the angles of receiving, transmitting and launching through the bolt and gasket structure, and adjust the parallelism.
Drawings
The drawings described herein are for illustration purposes only of selected embodiments and are not intended to represent all possible implementations and should not be construed as limiting the scope of the present invention.
Fig. 1 schematically shows the overall structure of a laser scanning structure in the present embodiment;
FIG. 2 schematically illustrates the explosive structure of FIG. 1;
FIG. 3 schematically illustrates an enlarged configuration of the first gasket of FIG. 2;
FIG. 4 schematically illustrates an enlarged structure of the third gasket of FIG. 2;
fig. 5 schematically shows an enlarged structure of the adaptor of fig. 2;
FIG. 6 schematically illustrates the top view of FIG. 1;
FIG. 7 schematically illustrates a cross-sectional structure in the direction A-A of FIG. 6;
FIG. 8 schematically shows a cross-sectional structure in the direction B-B in FIG. 6;
FIG. 9 schematically illustrates an adjustment system for a reflective assembly in a laser scanning structure of the present embodiment;
FIG. 10 schematically illustrates an adjustment system for an emission component in a laser scanning structure of the present embodiment;
fig. 11 schematically shows an adjustment system of the receiving component in the laser scanning structure of the present embodiment.
Reference numerals:
a base 10; a bottom plate 11; a mounting plate 12; a mounting hole 121; a photoelectric switch 13;
a launch assembly 20; a transmitting main board 21; a first gasket 22; an emission lens 23; a first locking member 24; a corner 201; an opening 202;
a receiving assembly 30; a receiving main board 31; a second gasket 32; a receiving lens 33; a second locking member 34;
a reflecting assembly 40; a polygon mirror 41; a protrusion 411; a motor 42; an adapter 43; a receiving groove 431; a third gasket 44; an end 441; a through hole 442; a third locking member 45;
a concave mirror 50; target paper 60; a camera 70; a reflecting mirror 80; a laser 90.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and for the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention but not all embodiments of the present invention.
Accordingly, the following detailed description of the embodiments of the invention, provided in connection with the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention, as all other embodiments that may be obtained by one of ordinary skill in the art without making inventive efforts based on the embodiments herein, are within the scope of this invention.
As shown in fig. 1-2, the laser scanning structure in this embodiment mainly includes a base 10, and an emitting component 20, a receiving component 30 and a reflecting component 40 disposed on the base 10, where the emitting component 20 and the receiving component 30 are disposed in parallel in a lateral direction, so as to reduce the overall height.
Specifically, the base 10 includes a bottom plate 11 and mounting plates 12 vertically disposed on two sides of the bottom plate 11, two of the mounting plates 12 are disposed in parallel, and a mounting hole 121 is disposed on each of the mounting plates 12.
The emitting assembly 20 is arranged on the mounting plate 12 and mainly comprises an emitting main plate 21, a first gasket 22, an emitting lens 23 and a first locking piece 24, wherein the emitting main plate 21 is connected to the base 10 through the first locking piece 24, the first gasket 22 is arranged between the emitting main plate 21 and the base 10, the emitting lens 23 is used for allowing laser emitted by the emitting main plate 21 to pass through, and the first gasket 22 has elasticity.
The receiving assembly 30 is disposed on the other mounting plate 12 and is laterally juxtaposed with the transmitting assembly 20, the receiving assembly 30 includes a receiving main plate 31, a second washer 32, a receiving lens 33, and a second locking member 34, the receiving main plate 31 is connected to the base 10 by the second locking member 34, the second washer 32 is disposed between the receiving main plate 31 and the base 10, and the second washer 32 has elasticity.
Here, the two mounting holes 121 are respectively used for accommodating the transmitting lens 23 and the receiving lens 33, and the transmitting lens 23 corresponds to the position of the receiving lens 33.
And the reflecting component 40 is disposed on the base plate 11 and between the transmitting component 20 and the receiving component 30, the reflecting component 40 includes a polygon mirror 41, a motor 42, an adapter 43, a third washer 44, and a third locking member 45, an output end of the motor 42 is disposed vertically upward and connected to the adapter 43, the polygon mirror 41 is connected to the adapter 43 through the third locking member 45, and the third washer 44 has elasticity.
As shown in fig. 3, the first washer 22 and the second washer 32 have identical structures, each having four corners 201, the whole is rectangular, the corners 201 are circular, the corners 201 have an opening 202, the opening 202 is used for passing through a single first locking member 24 or a second locking member 34, the center points of the first washer 22 and the second washer 32 are coincident with the center point of the mounting hole 121, and the first locking member 24 and the second locking member 34 are in a screw structure and screwed into the mounting plate 12 for fixing.
As shown in fig. 4 to 5, the third washer 44 is in a circular ring shape, three circular ring-shaped end portions 441 are uniformly distributed on the third washer 44, the end portions 441 have a through hole 442, the through hole 442 is used for allowing a single third locking member 45 to pass through, the upper end of the adapter 43 has a downward concave accommodating groove 431, the accommodating groove 431 is used for accommodating the third washer 44, part of the third washer 44 protrudes out of the accommodating groove 431, and the third locking member 45 is a screw and is screwed into the adapter for fixing.
As shown in fig. 6-8, the polygon mirror 41 is a four-sided prism having four uniformly distributed mirror surfaces, and the center point of the four-sided prism coincides with the center points of the third washer 44, the adapter 43, and the output shaft of the motor 42.
And, a protrusion 411 is disposed at each of four corners below the four prisms, and a photoelectric switch 13 is disposed on the base 10, and the protrusion 411 can rotate along with the four prisms and pass through the photoelectric switch 13.
Meanwhile, the invention also provides an adjusting system of the laser scanning structure, which comprises a concave mirror 50, a target paper 60, a camera 70, a reflecting mirror 80 and a laser 90, wherein when the reflecting assembly is adjusted, as shown in fig. 9, laser emitted by the laser 90 is reflected to the concave mirror 50 through the reflecting assembly 40 of the laser scanning structure, particularly one mirror surface of a four-prism, parallel light refracted by the concave mirror 50 is reflected to the target paper 60 and the camera 70 by the reflecting mirror 80, and the distance of a light spot on the target paper 60 with scales is observed and calculated through the camera 70, so long as the parallel light is necessarily coincident on the target paper after being refracted by the concave mirror.
That is, the distance between the four prisms and the adapter can be shortened or increased by screwing and unscrewing the screws, so that the adjustment of the spatial and angular relationship between the mirror surface of the four prisms and the motor is realized. By the presence of the elastic third gasket, the fastening screw on one side is screwed down, the fastening screw on one side is unscrewed, the side is lifted up, and the upper half part of the axis of the four prisms is obliquely approaching to the fastening screw due to the parallel relation between the axis of the four prisms and the side; the fastening screw is unscrewed, and the upper half part of the axis of the four-prism is far away from the screw. The horizontal height of the four prisms on the adapter can be adjusted through three screws, so that the axes of the four prisms are parallel to the rotation axis of the motor, or the preset angle relation is achieved, and the parallelism between the four surfaces of the four prisms and the rotation axis of the motor can be within 0.02mm through adjustment.
As shown in fig. 9, the adjustment principle of the emission light path is as follows: the laser is emitted through the emitting main board, and a beam of laser is emitted by matching with the laser, and after being refracted by the four prisms and the concave mirror, the light spots fall on target paper with scales. And adjusting four screws on the transmitting main board to enable the centers of the two light spots to coincide, thus completing the adjustment of the transmitting light path.
That is, the horizontal positional relationship between the emission light path and the bottom plate can be adjusted by tightening and loosening the first locking member 24, such as a screw, and the distance between the emission plate and the emission lens can be shortened or increased by tightening and loosening four screw tightening screws respectively arranged at four corners of the emission plate, so that the adjustment of the two in a spatial relationship is realized, the distance between the emission main plate and the emission lens is reduced by tightening the screw, and the corresponding emission light path is shifted to the corresponding direction; when the screw is unscrewed, the distance between the transmitting main board and the transmitting lens is increased, and the corresponding transmitting light path is shifted towards the corresponding direction.
As shown in fig. 10, after the reflection assembly and the transmitting optical path are adjusted, the adjustment principle of the receiving optical path is as follows: and the transmitting main board and the receiving main board are utilized to simultaneously emit laser, after refraction of the four-prism concave mirror, two light spots fall on target paper with scales, and four screws of the receiving main board are adjusted to enable the centers of the two light spots to coincide, so that the adjustment of a receiving light path is completed.
The receiving light path is consistent with the transmitting light path in a mode of adjusting by screwing the screw, and the second locking piece 34, namely the screwing and unscrewing of the screw can shorten or increase the distance between the receiving main board and the receiving lens, so that the adjustment of the receiving main board and the receiving lens in a space relation is realized, the distance between the receiving main board and the receiving lens is reduced by screwing the screw, and the corresponding receiving light path is offset towards the corresponding direction; when the screw is unscrewed, the distance between the receiving main board and the receiving lens is increased, and the corresponding receiving light path is offset towards the corresponding direction.
In this way, in the transverse parallel laser radar in this embodiment, the transmitting light path and the receiving light path are located at two sides of the same horizontal plane, but the two light paths are divided by the four prisms and are not intersected, so that a spacing component is omitted, the whole height is reduced, meanwhile, the environmental interference is reduced, and because the receiving light path and the light emitting path are located on the same horizontal plane, four reflecting surfaces of the four prisms can be designed into four complete independent surfaces, so that the processing difficulty of the four prisms is reduced, and the production efficiency is improved; and the receiving component is independently placed at the vacant position of the other side of the four prisms, so that the space utilization rate of the whole structure is improved while the height of the radar is reduced and the volume is reduced.
All of the manners described herein may be performed in any suitable order. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the invention.
The present invention describes preferred embodiments, including the best mode known to the inventors for carrying out the invention. Variations of these preferred embodiments will, of course, be apparent to those skilled in the art. The inventors expect skilled artisans to employ such variations as appropriate, and the inventors intend for the invention to be practiced otherwise than as specifically described herein. Accordingly, this invention includes all modifications encompassed within the spirit and scope of the invention as defined by the claims. Moreover, unless indicated otherwise or clearly contradicted by context, the present invention includes any of the above-described factors and all possible variations thereof.

Claims (10)

1. A laser scanning structure, comprising:
a base;
the transmitting assembly is arranged on one side of the base and comprises a transmitting main board, a first gasket, a transmitting lens and a first locking piece, wherein the transmitting main board is connected to the base through the first locking piece, the first gasket is arranged between the transmitting main board and the base, the transmitting lens is used for allowing laser emitted by the transmitting main board to pass through, and the first gasket has elasticity;
the receiving assembly is arranged on the other side of the base and is transversely arranged in parallel with the transmitting assembly, the receiving assembly comprises a receiving main board, a second gasket, a receiving lens and a second locking piece, the receiving main board is connected to the base through the second locking piece, the second gasket is arranged between the receiving main board and the base, and the second gasket has elasticity;
the reflection assembly is arranged in the middle of the base and located between the emission assembly and the receiving assembly, the reflection assembly comprises a polygon mirror, a motor, an adapter seat, a third gasket and a third locking piece, the output end of the motor is connected with the adapter seat, the polygon mirror is connected with the adapter seat through the third locking piece, and the third gasket has elasticity.
2. The laser scanning structure according to claim 1, wherein the base comprises a bottom plate and mounting plates arranged on two sides of the bottom plate, the two mounting plates are arranged in parallel, each mounting plate is provided with a mounting hole, the two mounting holes are respectively used for accommodating the transmitting lens and the receiving lens, and the positions of the transmitting lens and the receiving lens correspond to each other.
3. The laser scanning structure of claim 2, wherein the first washer and the second washer each have four corners, the corners having an opening through which a single first locking member or second locking member passes, and a center point of the first washer and the second washer coincides with a center point of the mounting hole.
4. A laser scanning structure according to claim 1, wherein the output end of the motor is disposed vertically upward.
5. The laser scanning structure of claim 4, wherein the adapter has a downwardly recessed receiving slot at an upper end thereof, the receiving slot being configured to receive a third washer and the third washer portion protruding outside the receiving slot.
6. The laser scanning structure of claim 5, wherein the third washer has three ends, the ends having a through hole for a single third locking member to pass through.
7. The laser scanning structure according to claim 6, wherein the polygon mirror is a four-prism having four uniformly distributed mirror surfaces, and a center point of the four-prism coincides with a center point of the third gasket, the adapter, and an output shaft of the motor.
8. The laser scanning structure according to claim 7, wherein a protrusion is provided at each of four corners below the four prisms, and a photoelectric switch is provided on the base, and the protrusion can rotate with the four prisms and pass through the photoelectric switch.
9. An adjustment system comprising the laser scanning structure according to any one of claims 1-8, further comprising a concave mirror, a target paper, a camera and a reflecting mirror, wherein the reflecting component of the laser scanning structure reflects the laser emitted by the emitting main board to the concave mirror, and the reflecting mirror reflects the parallel light reflected by the concave mirror to the target paper and the camera, and the camera observes and calculates the distance between the light spot and the target paper with scales.
10. The system according to claim 9, wherein the adjusting system comprises an adjusting step of emitting the light path, the adjusting step comprises placing the laser scanning structure at the side rear of the concave mirror, emitting the laser beam from the main board, and simultaneously, using a visible laser to emit a beam of laser beam, after the laser beam is refracted by the concave mirror and reflected by the reflecting mirror, the light spot falls on the target paper with graduation, and adjusting four locking pieces of the main board to make the centers of the two light spots coincide, thereby completing the adjustment of the emitting light path.
CN202311323325.9A 2023-10-12 2023-10-12 Laser scanning structure and adjusting system thereof Pending CN117607831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311323325.9A CN117607831A (en) 2023-10-12 2023-10-12 Laser scanning structure and adjusting system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311323325.9A CN117607831A (en) 2023-10-12 2023-10-12 Laser scanning structure and adjusting system thereof

Publications (1)

Publication Number Publication Date
CN117607831A true CN117607831A (en) 2024-02-27

Family

ID=89948545

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311323325.9A Pending CN117607831A (en) 2023-10-12 2023-10-12 Laser scanning structure and adjusting system thereof

Country Status (1)

Country Link
CN (1) CN117607831A (en)

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