CN111398932A - Reflector mounting structure and laser radar - Google Patents
Reflector mounting structure and laser radar Download PDFInfo
- Publication number
- CN111398932A CN111398932A CN202010326468.5A CN202010326468A CN111398932A CN 111398932 A CN111398932 A CN 111398932A CN 202010326468 A CN202010326468 A CN 202010326468A CN 111398932 A CN111398932 A CN 111398932A
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- CN
- China
- Prior art keywords
- laser
- mounting
- reflector
- side wall
- mirror
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Classifications
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- 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
-
- 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
Abstract
The invention discloses a reflector mounting structure and a laser radar, wherein the reflector mounting structure comprises a mounting shell and a reflector assembly, the mounting shell is provided with a containing cavity, a laser passing path is formed in the containing cavity, a mounting hole communicated with the containing cavity is formed in the outer side wall of the mounting shell in a penetrating manner, the mounting hole is positioned on the laser passing path, the reflector assembly comprises two first reflectors with reflecting surfaces oppositely arranged, one of the two first reflectors is arranged on the outer side wall of the mounting shell, the reflecting surface of the reflector is exposed into the mounting hole, and the other reflector is arranged in the containing cavity and positioned on the laser passing path. The distance between the two reflectors can be increased to the maximum extent on the premise of ensuring the structural strength, so that the transmission path of the laser beam between the reflectors is increased, and a larger space is provided for subsequent assembly and debugging of the emission point.
Description
Technical Field
The invention relates to the technical field of laser radars, in particular to a reflector mounting structure and a laser radar.
Background
The optical system path of the lidar can be simply expressed in order as: laser beam emission, laser beam transmission and laser beam reception. Once the focal length and the clear aperture of the optical system are determined, the linear distance of the laser beam transmission path is determined, and in order to restrict the linear distance within a certain size of space, a mirror is disposed at a suitable position to perform reflective bending on the linear beam, and the angle and the position of the mirror determine the bending path of the laser beam.
The mechanical laser radar is developed towards miniaturization and light weight, the integration level is higher and smaller, and the miniaturization design requires that the space inside the radar is fully and reasonably utilized. The common reflector mounting structure occupies a large space, so that the mounting and adjusting space is very limited, and great difficulty is increased for the optical mounting and adjusting process.
Disclosure of Invention
The invention mainly aims to provide a reflector mounting structure and a laser radar, aiming at increasing the transmission path of laser beams between reflectors and providing a larger space for the subsequent assembly and debugging of an emission point.
In order to achieve the above object, the present invention provides a mirror mounting structure for a laser radar, the mirror mounting structure including:
the laser beam laser device comprises a mounting shell, a laser beam and a laser beam, wherein a containing cavity is formed in the mounting shell, a laser passing path is formed in the containing cavity, a mounting hole communicated with the containing cavity is formed in the outer side wall of the mounting shell in a penetrating mode, and the mounting hole is formed in the laser passing path; and the number of the first and second groups,
the reflector assembly comprises two first reflectors with opposite reflecting surfaces, wherein one of the first reflectors is arranged on the outer side wall of the mounting shell, the reflecting surfaces of the reflectors are exposed to the inside of the mounting hole, and the other reflector is arranged in the accommodating cavity and is positioned on the laser passing path.
Optionally, the laser passing path includes a laser emitting path and a laser receiving path;
the mounting holes and the two first reflectors are correspondingly arranged to form two reflecting groups, and the two reflecting groups are respectively arranged on the laser emitting path and the laser receiving path.
Optionally, a placement groove is formed in the inner side wall of the accommodating cavity;
the first reflector in the accommodating cavity is arranged in the placing groove.
Optionally, one side wall of the mounting housing is a mounting side wall;
the placing groove penetrates through the mounting side wall;
and installing the first reflector into the accommodating cavity from the side of the installation side wall.
Optionally, the first reflector is adhered to the placing groove;
the wall surface of the inner side wall of the placement groove, which is attached to the first reflector, is a mounting wall surface, and the region, corresponding to the first reflector, on the mounting wall surface is a first mounting region;
the mounting side wall is provided with a first glue containing groove communicated with the placing groove, and at least part of the first glue containing groove is positioned in the first mounting area.
Optionally, the first mirror is adhered to an inner sidewall of the receiving cavity.
Optionally, the mounting hole is arranged in a stepped manner to form a stepped surface deviating from the accommodating cavity;
and the first reflector arranged on the outer side wall of the mounting shell is adhered to the step surface.
Optionally, an area of the step surface corresponding to the first reflector is a second mounting area;
and a second glue containing groove is arranged on the step surface, and at least part of the second glue containing groove is positioned on the second mounting area.
The invention also provides a laser radar which comprises the reflector mounting structure.
Optionally, the laser radar further includes:
the transmitting device comprises a laser transmitter arranged in the accommodating cavity, and the laser transmitter is positioned on the laser transmitting path and is used for transmitting laser; and the number of the first and second groups,
and the receiving device comprises a laser receiver arranged in the accommodating cavity, and the laser receiver is positioned on the laser receiving path and is used for receiving the laser reflected by the object and emitted by the emitting device.
In the technical scheme provided by the invention, the two first reflectors are positioned on the laser passing path, the reflector surfaces are oppositely arranged, when laser rays are emitted to the reflector surface of one of the first reflectors, the laser rays are transmitted to the reflector surface of the other first reflector through the reflection principle and irradiate on an object through re-reflection, one of the two first reflectors is arranged in the accommodating cavity, and the other reflector reflects the laser rays through the mounting hole on the outer side surface of the mounting shell, so that the distance between the two reflectors can be increased to the maximum extent on the premise of ensuring the structural strength, the transmission path of the laser beams between the reflectors is increased, and a larger space is provided for subsequent assembly and debugging of an emission point.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic top view of a mirror mounting structure according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of an embodiment of the mirror mounting structure in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Reflecting |
13 | Placing groove |
| 1 | |
131 | |
| 11 | Containing |
2 | |
| 12 | |
21 | |
| 121 | Step surface |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Mechanical type lidar promotes in more and more application scenes, and especially airborne lidar, unmanned aerial vehicle have strict restriction to lidar's size and weight, just so require lidar must be compacter, and the space size of each part compresses to extremely.
In a common design of the mechanical lidar, two mirrors are arranged between a laser beam emission point and a laser emission main lens barrel, and similarly, two mirrors are arranged between a laser reception main lens barrel and a laser beam reception point. Thus, the structure can be roughly divided into two zones: a transmitting zone and a receiving zone. In addition, the transmitting area is arranged with a transmitting circuit board assembly, and the receiving area is arranged with a receiving circuit board assembly. The transmitting circuit assembly and the receiving circuit assembly need to perform spatial position adjustment in respective areas in the mechanical laser radar optical adjustment process, such as adjustment of front and back, left and right, up and down, angle swing and the like. Thereby enabling the laser radar to achieve optimal optical performance.
The present volume of the product of the same type is all great, and common speculum mounted position all pastes on the face of leaning on of main structure inner chamber, and launching point, receiving point have increased very big degree of difficulty for optics assembly and adjustment process owing to the assembly and adjustment space is very limited moreover, seriously influence the assembly and adjustment efficiency of whole laser radar product. Market competition in the future can be replaced by compact radar gradually, and the design of the more scientific, reasonable and compact bending path of the optical system path can further improve the structural compactness of the laser radar and simultaneously lead the installation and debugging of products to be more convenient and faster.
The invention provides a reflector mounting structure and a laser radar, which can further increase the distance between two reflectors, further increase the transmission path of a laser beam between the reflectors, and reduce the transmission path of the laser beam between a laser beam emitting point and the reflectors on the premise of a certain focal length. Thus, the emission point can be closer to the reflector, a larger space is provided for subsequent assembly and debugging of the emission point, and fig. 1 to 2 are schematic diagrams of an embodiment of the reflector mounting structure and the laser radar provided by the invention.
Referring to fig. 1, the reflector mounting structure 100 includes a mounting housing 1 and a reflector assembly 2, the mounting housing 1 is formed with a receiving cavity 11, a laser passing path is formed in the receiving cavity 11, a mounting hole 12 communicating with the receiving cavity 11 is penetratingly formed on an outer side wall of the mounting housing 1, the mounting hole 12 is located on the laser passing path, the reflector assembly 2 includes two first reflectors 21 having reflecting surfaces arranged oppositely, one of the two first reflectors 21 is disposed on an outer side wall of the mounting housing 1, and the reflecting surface of the reflector is exposed to the mounting hole 12, and the other is disposed in the receiving cavity 11 and located on the laser passing path.
In the technical scheme provided by the invention, the two first reflectors 21 are both positioned on the laser passing path, the reflector surfaces are arranged oppositely, when laser light is emitted to the reflector surface of one of the first reflectors 21, the laser light is transmitted to the reflector surface of the other first reflector 21 through the reflection principle, and is irradiated to an object through re-reflection, one of the two first reflectors 21 is arranged in the accommodating cavity 11, and the other one of the two first reflectors 21 reflects the laser light through the mounting hole 12 on the outer side surface of the mounting shell 1, so that the distance between the two reflectors can be increased to the maximum on the premise of ensuring the structural strength, the transmission path of the laser beam between the reflectors is increased, and a larger space is provided for subsequent assembly and debugging of an emission point.
Further, in this embodiment, the laser passing path includes a laser emitting path and a laser receiving path, the mounting hole 12 and the two first reflecting mirrors 21 are correspondingly disposed as two reflecting groups, and the two reflecting groups are disposed on the laser emitting path and the laser receiving path respectively. Two reflection group for laser is reflected to the object by the laser emission route, and the light rethread laser receiving path that the object was reflected is back, makes launching point and catch point all possess bigger dress and transfer space, and radar detection effect is better.
Further, the first reflecting mirror 21 is adhered to an inner sidewall of the accommodating chamber 11. The fixing mode is simple in structure and quick to install.
In order to facilitate the installation of the first reflecting mirror 21 in the accommodating cavity 11, in this example, referring to fig. 2, an inner side wall of the accommodating cavity 11 is provided with a placement groove 13, and the first reflecting mirror 21 in the accommodating cavity 11 is disposed in the placement groove 13. So set up, the shape of the said installation slot 13 matches with said first reflector 21, so set up and facilitate the installation and location.
Further, in order to facilitate installation and disassembly, in this example, a side wall of the installation shell 1 is an installation side wall, the installation groove 13 is formed to penetrate through the installation side wall, and the first reflector 21 is installed on the side of the installation side wall to the inside of the accommodating cavity 11. Taking the position and orientation shown in fig. 2 as an example, the mounting side wall is the upper wall surface of the mounting housing 1, the installation groove 13 penetrates through the upper end of the mounting housing 1, the first reflector 21 extends into the installation groove 13 from the opening at the upper end, and the open structure is convenient for mounting and dismounting.
In order to fixedly mount the first reflector 21 in the mounting groove 13, in this example, the first reflector 21 is adhered to the mounting groove 13, a wall surface of the inner side wall of the mounting groove 13, which is attached to the first reflector 21, is a mounting wall surface 131, an area on the mounting wall surface 131, which corresponds to the first reflector 21, is a first mounting area, the mounting side wall is provided with a first glue accommodating groove communicated with the mounting groove 13, and at least part of the first glue accommodating groove is located in the first mounting area. Through first appearance gluey groove carries out the injecting glue, the trilateral ring of first speculum 21 is glued, so fixed mode simple structure, and the installation is swift.
The reflecting mirror surface of the first reflecting mirror 21 disposed on the outer side wall of the mounting housing 1 penetrates through the mounting hole 12, and further, in order to facilitate the mounting of the first reflecting mirror 21 on the mounting housing 1, please refer to fig. 2, in this embodiment, the mounting hole 12 is arranged in a step shape to form a step surface 121 deviating from the accommodating cavity 11, and the first reflecting mirror 21 disposed on the outer side wall of the mounting housing 1 is adhered to the step surface 121. So arranged, the installation and positioning of the first reflector 21 are facilitated.
Specifically, the first reflector 21 is adhered to the step surface 121, in this embodiment, an area of the step surface 121 corresponding to the first reflector 21 is a second installation area, and a second glue containing groove is formed in the step surface 121, and at least a part of the second glue containing groove is located in the second installation area. Through the second holds gluey groove and carries out the injecting glue, first speculum 21 four sides ring is glued, so fixed mode simple structure, and the installation is swift.
The present invention further provides a laser radar including all the technical features of the above-mentioned reflector mounting structure 100, and therefore, the present invention also has the technical effects brought by all the technical features, which are not described herein again.
Further, laser radar still includes emitter and receiving arrangement, emitter is including locating hold the laser emitter in the chamber 11, laser emitter is in on the laser emission route for the transmission of laser, receiving arrangement is including locating hold the laser receiver in the chamber 11, laser receiver is in on the laser receiving route, be used for receiving by emitter sends the laser that reflects back through the object. The laser transmitter transmits laser with a certain specific wavelength and short-wave near-infrared laser, the laser is emitted to irradiate an object, the object is reflected back and received by the laser receiver, and a complete radar detection path is formed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A mirror mounting structure for use in a lidar, comprising:
the laser beam laser device comprises a mounting shell, a laser beam and a laser beam, wherein a containing cavity is formed in the mounting shell, a laser passing path is formed in the containing cavity, a mounting hole communicated with the containing cavity is formed in the outer side wall of the mounting shell in a penetrating mode, and the mounting hole is formed in the laser passing path; and the number of the first and second groups,
the reflector assembly comprises two first reflectors with opposite reflecting surfaces, wherein one of the first reflectors is arranged on the outer side wall of the mounting shell, the reflecting surfaces of the reflectors are exposed to the inside of the mounting hole, and the other reflector is arranged in the accommodating cavity and is positioned on the laser passing path.
2. The mirror mounting structure according to claim 1, wherein the laser light passing path includes a laser light emitting path and a laser light receiving path;
the mounting holes and the two first reflectors are correspondingly arranged to form two reflecting groups, and the two reflecting groups are respectively arranged on the laser emitting path and the laser receiving path.
3. The mirror mounting structure according to claim 1, wherein an inner side wall of the accommodating chamber is provided with a seating groove;
the first reflector in the accommodating cavity is arranged in the placing groove.
4. The mirror mounting structure according to claim 3, wherein one side wall of the mounting case is a mounting side wall;
the placing groove penetrates through the mounting side wall;
and installing the first reflector into the accommodating cavity from the side of the installation side wall.
5. The mirror mounting structure according to claim 4, wherein the first mirror is adhered in the seating groove;
the wall surface of the inner side wall of the placement groove, which is attached to the first reflector, is a mounting wall surface, and the region, corresponding to the first reflector, on the mounting wall surface is a first mounting region;
the mounting side wall is provided with a first glue containing groove communicated with the placing groove, and at least part of the first glue containing groove is positioned in the first mounting area.
6. The mirror mounting structure according to claim 1, wherein the first mirror is adhered to an inner side wall of the accommodating chamber.
7. The mirror mounting structure according to claim 1, wherein the mounting hole is stepped to form a stepped surface facing away from the accommodating chamber;
and the first reflector arranged on the outer side wall of the mounting shell is adhered to the step surface.
8. The mirror mounting structure according to claim 7, wherein an area of the step face corresponding to the first mirror is a second mounting area;
and a second glue containing groove is arranged on the step surface, and at least part of the second glue containing groove is positioned on the second mounting area.
9. A lidar comprising the mirror mounting structure of any one of claims 1 to 8.
10. The lidar of claim 9, further comprising:
the transmitting device comprises a laser transmitter arranged in the accommodating cavity, and the laser transmitter is positioned on the laser transmitting path and is used for transmitting laser; and the number of the first and second groups,
and the receiving device comprises a laser receiver arranged in the accommodating cavity, and the laser receiver is positioned on the laser receiving path and is used for receiving the laser reflected by the object and emitted by the emitting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010326468.5A CN111398932A (en) | 2020-04-23 | 2020-04-23 | Reflector mounting structure and laser radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010326468.5A CN111398932A (en) | 2020-04-23 | 2020-04-23 | Reflector mounting structure and laser radar |
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| Publication Number | Publication Date |
|---|---|
| CN111398932A true CN111398932A (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010326468.5A Pending CN111398932A (en) | 2020-04-23 | 2020-04-23 | Reflector mounting structure and laser radar |
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| CN (1) | CN111398932A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112558081A (en) * | 2020-11-18 | 2021-03-26 | 国网智能科技股份有限公司 | Laser radar system based on wireless communication network and working method thereof |
-
2020
- 2020-04-23 CN CN202010326468.5A patent/CN111398932A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112558081A (en) * | 2020-11-18 | 2021-03-26 | 国网智能科技股份有限公司 | Laser radar system based on wireless communication network and working method thereof |
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