CN117008082A - Optical-mechanical system - Google Patents
Optical-mechanical system Download PDFInfo
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- CN117008082A CN117008082A CN202210468839.2A CN202210468839A CN117008082A CN 117008082 A CN117008082 A CN 117008082A CN 202210468839 A CN202210468839 A CN 202210468839A CN 117008082 A CN117008082 A CN 117008082A
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 40
- 230000003287 optical effect Effects 0.000 claims description 207
- 230000008033 biological extinction Effects 0.000 claims description 27
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000004308 accommodation Effects 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 5
- 230000036039 immunity Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 21
- 238000005192 partition Methods 0.000 description 12
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- 238000004519 manufacturing process Methods 0.000 description 3
- 229910052755 nonmetal Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021389 graphene Inorganic materials 0.000 description 2
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- 239000002470 thermal conductor Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
Abstract
The embodiment of the application discloses an optical-mechanical system, which comprises a shell, a light emitting component, a light receiving component and a spacer, wherein the spacer comprises a coaming, a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively positioned on two opposite sides of the coaming and are connected with the coaming to jointly form a second accommodating cavity, a first light inlet, a second light inlet, a first light outlet and a second light outlet which are communicated with the second accommodating cavity are formed in the coaming, the light emitting component is arranged corresponding to the first light inlet, and the light receiving component is arranged corresponding to the second light outlet. The optical-mechanical system of the embodiment of the application can reduce or even avoid the interference of stray light on the emitted light signal and the echo light signal. And because the second holds the chamber and is enclosed by bounding wall, first apron and second apron and form, can make the second hold the shading performance in chamber better, interference immunity is stronger.
Description
Technical Field
The application relates to the technical field of optics, in particular to an optical-mechanical system.
Background
The optical-mechanical system is a device which obtains information such as a target distance and the like by sending an emitted light signal to an external space target and then receiving an echo light signal of the target and analyzing and comparing the emitted light signal and the echo light signal, and the data of the device has the characteristics of instantaneity, stability, richness and the like, so that the device is widely applied. However, in the related art, the shielding performance of the optical-mechanical system is poor.
Disclosure of Invention
The embodiment of the application provides an optical-mechanical system, which is used for solving the problem of poor shielding performance of the optical-mechanical system in the related art. The technical scheme is as follows;
in a first aspect, an embodiment of the present application provides an optical-mechanical system, including:
a housing formed with a first accommodation chamber;
the light emitting assembly is positioned in the first accommodating cavity and is used for emitting an emitted light signal to the shot object;
the light receiving component is positioned in the first accommodating cavity and is used for receiving echo light signals reflected by the shot object;
the isolation piece is positioned in the first accommodating cavity and comprises a surrounding plate, a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively positioned on two opposite sides of the surrounding plate and are connected with the surrounding plate to jointly form a second accommodating cavity, a first light inlet, a second light inlet, a first light outlet and a second light outlet which are communicated with the second accommodating cavity are formed in the surrounding plate, and the light emitting component is arranged corresponding to the first light inlet and is used for emitting the emitted light signals in the second accommodating cavity, and the emitted light signals are emitted through the first light outlet; the light receiving component is arranged corresponding to the second light outlet and is used for receiving echo light signals of the shot object, which are emitted into the second accommodating cavity through the second light inlet.
According to the optical-mechanical system provided by the embodiment of the application, the emitted light signals emitted by the light emitting component can enter the second accommodating cavity from the first light inlet and exit from the first light outlet, so that the interference of stray light on the emitted light signals is reduced or even avoided. The light receiving component can receive the echo light signal of the shot object which is shot into the second accommodating cavity through the second light inlet, so that the interference of stray light on the echo light signal is reduced or even avoided. And because the second holds the chamber and is enclosed by bounding wall, first apron and second apron and form, can make the second hold the shading performance in chamber better, interference immunity is stronger.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of an optical-mechanical system according to a first embodiment of the present application;
FIG. 2 is an exploded schematic view of the opto-mechanical system shown in FIG. 1;
FIG. 3 is a schematic perspective cross-sectional view of a portion of the optical-mechanical system shown in FIG. 1;
FIG. 4 is an exploded schematic view of the isolator in the opto-mechanical system shown in FIG. 1;
FIG. 5 is a schematic diagram of the light emitting assembly, the light receiving assembly, the light scanning assembly and the spacer in the optical-mechanical system shown in FIG. 1;
FIG. 6 is a schematic perspective view of the matting fins of the opto-mechanical system shown in FIG. 1;
FIG. 7 is an exploded view of the light receiving assembly of the opto-mechanical system shown in FIG. 1;
FIG. 8 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 9 is a schematic top view of the light emitting assembly, light receiving assembly, light scanning assembly and housing of the optical-mechanical system shown in FIG. 1;
FIG. 10 is a schematic diagram of an optical-mechanical system according to a second embodiment of the present application;
FIG. 11 is a schematic diagram of an optical-mechanical system according to a third embodiment of the present application;
FIG. 12 is a schematic diagram of an optical-mechanical system according to a fourth embodiment of the present application;
FIG. 13 is a schematic diagram of an optical-mechanical system according to a fifth embodiment of the present application;
FIG. 14 is a schematic diagram of an optical mechanical system according to a sixth embodiment of the present application;
FIG. 15 is a schematic diagram of an optical mechanical system according to a seventh embodiment of the present application;
Fig. 16 is a schematic structural diagram of an optical mechanical system according to an eighth embodiment of the present application.
Description of the drawings: 1. an optical-mechanical system; 10. a light emitting assembly; 12. a transmitting plate; 121. a first panel; 122. a second panel; 13. a launch shield; 131. a second through hole; 20. a light receiving assembly; 21. an optical receiver; 22. a receiving plate; 221. a third panel; 222. a fourth panel; 23. receiving a shield; 231. a first through hole; 232. a first sub-shield; 233. a second sub-shield; 24. a shielding ring; 25. a light filter; 261. a first stray light channel; 262. a second stray light channel; 30. an optical scanning assembly; 31. a first light scanning element; 311. vibrating mirror; 3111. a first reflective surface; 32. a second light scanning element; 321. a turning mirror; 3211. a second reflective surface; 40. a first optical path transition assembly; 41. a first reflective element; 411. one of the first emission mirrors; 412. a further first reflective element; 50. a second optical path changing component; 51. a second reflective element; 511. one of the second reflective elements; 512. a further second reflective element; 60. a light collimation assembly; 61. a fast axis collimator lens; 62. a slow axis collimating mirror; 70. a spacer; 71. an emission light channel; 711. a first light inlet; 712. a first light outlet; 713. a first sub-channel; 714. a third sub-channel; 72. an echo light channel; 721. the second light inlet; 722. the second light outlet; 723. a second sub-channel; 724. a fourth sub-channel; 73. coaming plate; 731. a second accommodation chamber; 732. a first plate body; 7321. a first surface; 7322. a first sub-surface; 7323. a second sub-surface; 7324. an avoidance zone; 733. a second plate body; 734. a third plate body; 735. a fourth plate body; 74. a partition plate; 75. a first cover plate; 76. a second cover plate; 80. a housing; 81. a first accommodation chamber; 82. a first plate; 821. an inner plate surface; 8211. a first region; 8212. a second region; 8213. a third region; 8214. a fourth region; 83. a case body; 84. a cover body; 85. a baffle; 91. a main board; 911. a fifth panel; 912. a sixth panel; 92. an electric control board; 93. an interface board; 941. a first heat conductive member; 942. a second heat conductive member; 9421. a first sub-heat conductive member; 9422. a second sub-heat conductive member; 9423. a third sub-heat conductive member; 943. a light barrier; 944. extinction fins; 9441. a extinction cylinder; 9442. a carrier plate; m, a first straight line direction; n, the second straight line direction; p, a first rotating shaft; q, the second pivot.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the following detailed description of the embodiments of the present application will be given with reference to the accompanying drawings.
When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application as detailed in the accompanying claims.
Referring to fig. 1, an optical-mechanical system 1 is provided in an embodiment of the application. The optical system 1 may be a laser radar, etc., and the optical system 1 may be used for navigation obstacle avoidance of products such as an automobile, a robot, a logistics vehicle, a patrol vehicle, etc., so as to realize functions such as obstacle recognition, ranging, speed measurement, automatic driving, etc., which is not limited by the embodiment of the application.
Specifically, the optical-mechanical system 1 includes a light emitting element 10 for emitting an emitted light signal to a subject, and a light receiving element 20 for receiving an echo light signal reflected by the subject. The echo light signal is compared with the emission light signal, and information such as the distance of the photographed object can be obtained after appropriate processing.
Referring to fig. 1 and 2, the optical mechanical system 1 further includes a spacer 70 and a housing 80, where the housing 80 forms a first accommodating cavity 81, and the light emitting assembly 10, the light receiving assembly 20, and the spacer 70 may be disposed in the first accommodating cavity 81 of the housing 80.
Referring to fig. 3 and 4, the spacer 70 includes a shroud 73, a first cover plate 75 and a second cover plate 76, the first cover plate 75 and the second cover plate 76 being respectively located at opposite sides of the shroud 73 and both being connected to the shroud 73 to form a second receiving chamber 731 together with the shroud 73. The second accommodation chamber 731 is formed by enclosing the enclosing plate 73, the first cover plate 75 and the second cover plate 76, so that the light shielding performance of the second accommodation chamber 731 is better, and the interference resistance is stronger. The connection manner between the first cover plate 75 and the coaming 73 and the connection manner between the second cover plate 76 and the coaming 73 may be any, for example, may be a snap connection, an adhesive connection, or the like, which is not limited in the embodiment of the present application. Alternatively, in the embodiment of the present application, the first cover plate 75 and the coaming 73 may be directly configured as an integrally formed structure, and the second cover plate 76 and the coaming 73 may be connected by a slot, an insert, or the like.
Referring to fig. 5, the shroud 73 is provided with a first light inlet 711 and a first light outlet 712 that are communicated with the second accommodating cavity 731, and the light emitting component 10 is disposed corresponding to the first light inlet 711, so that the emitted light signal emitted by the light emitting component 10 can timely enter the second accommodating cavity 731 and be emitted from the first light outlet 712, thereby reducing or even avoiding the interference of stray light on the emitted light signal. The coaming 73 is further provided with a second light inlet 721 and a second light outlet 722 which are communicated with the second accommodating cavity 731, and the light receiving assembly 20 is arranged corresponding to the second light outlet 722, so that the light receiving assembly 20 can receive an echo light signal of a shot object entering the second accommodating cavity 731 through the second light inlet 722, and interference of stray light on the echo light signal is reduced or even avoided.
Optionally, the spacer 70 further includes a partition 74, the partition 74 is located in the second accommodating cavity 731, and splits the second accommodating cavity 731 to include the emission light channel 71 and the echo light channel 72, the first light inlet 711 and the first light outlet 712 are in communication with the emission light channel 71, and the second light inlet 721 and the second light outlet 722 are in communication with the echo light channel 72. That is, at least part of the emission light channel 71 and at least part of the echo light channel 72 may be separated by the partition 74, so that the independence of the emission light channel 71 and the echo light channel 72 can be improved, and the crosstalk between the emission light signal and the echo light signal can be reduced.
It should be noted that, the emission light channel 71 may be partially separated from the portion of the echo light channel 72 by the partition 74, or the emission light channel 71 may be integrally separated from the whole of the echo light channel 72 by the partition 74, which is not limited in the embodiment of the present application and may be flexibly adjusted according to specific requirements.
Specifically, when the portion of the emission light channel 71 is separated from the portion of the echo light channel 72, optionally, one end of the partition 74 may be connected to a portion of the shroud 73 between the first light inlet 711 and the second light outlet 722, and the other end may be located in the second accommodating cavity 731 and spaced from the shroud 73, so that the first sub-channel 713 of the emission light channel 71, which is close to the light emission component 10, is separated from the second sub-channel 723 of the echo light channel 72, which is close to the light reception component 20, by the partition 74, to avoid interference of the echo light signal received at the light reception component 20 by the emission light signal emitted at the light emission component 10. While a third sub-channel 714 of the transmit light channel 71, which is remote from the light emitting assembly 10, communicates with a fourth sub-channel 724 of the return light channel 72, which is remote from the light receiving assembly 20. In this embodiment, the first light outlet 712 and the second light inlet 721 may be in communication.
Specifically, when the entire emission light channel 71 is spaced apart from the entire echo light channel 72, one end of the partition 74 may be optionally connected to a portion of the shroud 73 between the second light inlet 721 and the first light outlet 712, and the other end may be connected to a portion of the shroud 73 between the first light outlet 712 and the second light inlet 721, so that the entire emission light channel 71 is spaced apart from the entire echo light channel 72 via the partition 74.
Optionally, the shroud 73 may include a first plate 732, a second plate 733, a third plate 734 and a fourth plate 735, where the first plate 732 is formed with a first light outlet 712 and a second light inlet 721, and the second plate 733 is spaced from the first plate 732; the third plate 734 is connected to the first plate 732 and extends in a direction approaching the second plate 733; the fourth plate 735 is connected to the second plate 733 and extends in a direction approaching the first plate 732, the fourth plate 735 encloses the first plate 732, the second plate 733 and the third plate 734 to form a second accommodating cavity 731, the first light inlet 711 is disposed at a position of the second plate 733 approaching the third plate 734, the second light outlet 722 is disposed at a position of the first plate 732 approaching the third plate 734, and the partition 74 is connected to the third plate 734 and is spaced from the second plate 733 and the first plate 732. The coaming 73 of the embodiment of the present application is formed by approximately enclosing four plate bodies, and has a relatively simple structure and convenient production and manufacture.
The shapes of the first plate 732, the second plate 733, the third plate 734, and the fourth plate 735 may be arbitrary, and the embodiment of the present application is not limited thereto.
Optionally, the light emitting assembly 10 is attached to and connected with the surface of the partition 74 facing away from the first plate 732, so as to enhance the connection area between the light emitting assembly 10 and the spacer 70, and enhance the connection stability therebetween.
Optionally, the second light inlet 721 and the first light outlet 712 are both located on the first plate 732 and are in communication with each other, so as to simplify the structural design of the spacer 70. Optionally, the first light outlet 712 may be located at a position of the first plate 732 near the fourth plate 735, and the first light inlet 711 is combined with the second plate 733 near the third plate 734, so that the distance between the first light inlet 711 and the first light outlet 712 can be increased, the transmission path of the emitted light signal can be prolonged, and the reduction of the divergence angle, the improvement of the ranging capability, and the reduction of the optical crosstalk can be realized. Optionally, the second light inlet 721 may be located at a position of the first plate 732 close to the fourth plate 735, and the second light outlet 722 is combined with the first plate 732 and located at a position of the second plate 734 close to the third plate 734, so that the distance between the second light inlet 721 and the second light outlet 722 can be increased, the transmission path of the echo optical signal is prolonged, and the ranging capability is improved.
Optionally, the optical system 1 further includes an optical scanning assembly 30, where the optical scanning assembly 30 is located in the first accommodating cavity 81 and is capable of transmitting the emitted light signals emitted by the light emitting assembly 10 to multiple directions, and the optical scanning assembly 30 is further capable of transmitting the echo light signals in multiple directions to the light receiving assembly 20, so as to improve the detection view angle of the optical system 1 and realize distance detection of the photographed objects in different directions and the optical system 1.
Optionally, the optical scanning assembly 30 may include a first optical scanning element 31 and a second optical scanning element 32, where the emitted optical signal is sequentially transmitted through the first optical scanning element 31 and the second optical scanning element 32 and then emitted to the object, and the echo optical signal is sequentially transmitted through the second optical scanning element 32 and the first optical scanning element 31 and then reaches the optical receiving assembly 20, so that the first optical scanning element 31 and the second optical scanning element 32 cooperate to implement emission of the emitted optical signal to multiple directions and/or reception of the echo optical signal in multiple directions.
The first light scanning element 31 and the second light scanning element 32 can be of a reflective structure; for example, the first optical scanning element 31 may be a galvanometer or a turning mirror, and the second optical scanning element 32 may be a galvanometer or a turning mirror. In the embodiment of the present application, the first optical scanning element 31 includes a galvanometer 311, and the second optical scanning element 32 includes a turning mirror 321. Specifically, the galvanometer 311 has a first reflective surface 3111 for transmitting an emitted light signal and/or an echo light signal, and the electric control board 92 may be electrically connected to the galvanometer 311 and configured to control rotation of the galvanometer 311 about the first rotation axis p, the first reflective surface 3111 facing the second optical scanning element 32. The turning mirror 321 has a plurality of second reflecting surfaces 3211 for transmitting an emitted light signal and/or an echo light signal, the electric control board 92 may be electrically connected to the turning mirror 321 and used for controlling the turning mirror 321 to rotate around a second rotation axis q, and the plurality of second reflecting surfaces 3211 are disposed around the periphery of the second rotation axis q, so that when the turning mirror 321 rotates around the second rotation axis q, at least one second reflecting surface 3211 faces the first reflecting surface 3111 of the first optical scanning element 31.
The light reflecting surfaces (e.g., the first light reflecting surface 3111 and the second light reflecting surface 3211) may reflect the light signals (e.g., the emitted light signals and the echo light signals), and change the transmission direction of the light signals, so that the light signals can be smoothly transmitted backward.
Alternatively, the first rotation axis p may be perpendicular to the second rotation axis q. The oscillating mirror 311 rotates around the first rotation axis p to adjust the angle of view in one direction, the rotating mirror 321 rotates around the second rotation axis q to adjust the angle of view in the other direction, and when the first rotation axis p is perpendicular to the second rotation axis q, the two angles of view can be perpendicular to each other. For example, the galvanometer 311 may be rotated about the first axis of rotation p to adjust the vertical angle of view, and the rotator 321 may be rotated about the second axis of rotation q to adjust the horizontal angle of view. In the embodiment of the present application, the turning mirror 321 can realize scanning at a transverse field angle of 120 ° and the vibrating mirror 311 can realize scanning at a longitudinal field angle of 25 ° to complete scanning at 120 ° x 25 ° of the full field angle space.
Optionally, the first plate 732 is recessed toward the second accommodating cavity 731 to form an avoidance region 7324, and the second optical scanning element 32 is disposed in the avoidance region 7324, so that the optical system 1 is more compact in structure, and a miniaturized design of the optical system 1 is achieved.
Optionally, the first plate 732 has a first surface 7321 facing away from the second plate 733, the first surface 7321 includes a first sub-surface 7322 close to the third plate 734 and a second sub-surface 7323 close to the fourth plate 735, the second sub-surface 7323 is located between the first sub-surface 7322 and the second plate 733, such that an avoidance space 7324 for setting the second optical scanning element 32 is formed between the first sub-surface 7322 and the second sub-surface 7323, the first light outlet 712 and the second light inlet 721 are set corresponding to the second sub-surface 7323, and the second light outlet 722 is set corresponding to the first sub-surface 7322.
Optionally, referring to fig. 1 again, the optical-mechanical system 1 further includes a light barrier 943, where the light barrier 943 is located in the first accommodating cavity 81 and is disposed on a side of the second optical scanning element 32 near the spacer 70, and one end of the light barrier 943 is located between the second optical scanning element 32 and the first optical scanning element 31, and the other end extends toward the direction of the second optical scanning element 32 away from the first optical scanning element 31 and is connected to the housing 80. The light barrier 943, in combination with the spacer 70, may further improve the interference immunity of the emitted light signal and/or the echo light signal during transmission.
Optionally, the optical system 1 further includes a extinction fin 944, where the extinction fin 944 is located in the first accommodating cavity 81 and disposed corresponding to the first light outlet 712 and the second light inlet 721. The extinction fins 944 can reflect the stray light for multiple times, so that the intensity of the stray light is weakened, and the interference of the stray light on the optical signals of the working wave band is further reduced.
Still further alternatively, referring to fig. 3, the extinction fins 944 are located on a side of the first cover plate 75 of the spacer 70 facing away from the second cover plate 76 or on a side of the second cover plate 76 facing away from the first cover plate 75, so that the extinction fins 944 are not easy to enter the second light inlet 721 after multiple reflections of the stray light, and are not easy to interfere with the optical signals of the operating band.
Alternatively, the housing 80 includes a first plate 82 and a baffle 85, the first plate 82 having an inner plate surface 821 forming the first accommodation chamber 81, and the first cover plate 75 being located between the inner plate surface 821 and the second cover plate 76. The baffle 85 is located between the extinction fin 944 and the spacer 70, one end of the baffle is connected to the inner plate surface 821 of the first plate 82, the other end of the baffle extends towards a direction approaching the second cover plate 76, and a surface of the baffle 85 facing away from the inner plate surface 821 is located on a side of the extinction fin 944 facing away from the inner plate surface 821, so that interference of stray light on an optical signal of an operating band transmitted in the spacer 70 is further reduced through the baffle 85. Optionally, a surface of the baffle 85 facing away from the inner plate 821 is located on a side of the first cover plate 75 facing away from the inner plate 821.
Optionally, the extinction fin 944 includes a plurality of extinction cylinders 9441, and extinction holes are provided on the extinction cylinders 9441, and an extension direction of the extinction holes is directed from the first cover plate 75 to the second cover plate 76, so that the stray light can be reflected multiple times in the extinction holes. Alternatively, the plurality of extinction cylinders 9441 may be generally distributed in a honeycomb shape.
Optionally, referring to fig. 6, the extinction fins 944 further includes a carrier plate 9442, where the carrier plate 9442 is located in the first accommodating cavity 81 and on a side of the first cover plate 75 facing away from the second cover plate 76, and the carrier plate 9442 connects the housing 80 and the plurality of extinction cylinders 9441, so as to facilitate assembling the extinction fins 944 with the housing 80.
Alternatively, referring to fig. 7 and 8, the light receiving assembly 20 includes a light receiver 21, a receiving plate 22, and a receiving shield cover 23, the light receiver 21 is mounted on the receiving plate 22 and electrically connected to the receiving plate 22, the receiving shield cover 23 covers the light receiver 21, and the receiving shield cover 23 is provided with a first through hole 231 for passing the echo light signal to reach the light receiver 21. The receiving shield 23 can reduce stray light received by the light receiver 21.
Optionally, the light receiving assembly 20 further includes a shielding ring 24 disposed at the periphery of the light receiver 21 and a filter 25 disposed at the light incident side of the light receiver 21. Since stray light may reach the light receiver 21 from the gap due to the existence of the assembly gap when the product is assembled, the shielding ring 24 can block the stray light at the gap from transmitting toward the light receiver 21; for example, referring to fig. 8, the light receiving assembly 20 further includes a light filter 25 disposed on the light incident side of the light receiver 21, gaps between the light filter 25 and the spacer 70, and gaps between the receiving shield 23 and the receiving plate 22 may form a first stray light channel 261, and gaps between the receiving shield 23 and the receiving plate 22 may form a second stray light channel 262, where the shielding ring 24 may be disposed on the periphery of the light receiver 21 and two ends respectively abut against a surface of the receiving plate 22 on which the light receiver 21 is mounted and a surface of the light filter facing the light receiver 21, so as to block the first stray light channel 261 and the second stray light channel 262.
Optionally, referring to fig. 2 and 3 again, the optical mechanical system 1 further includes a main board 91, where the main board 91 is electrically connected to the light emitting component 10 and is used for controlling the light emitting component 10 to emit an emitted light signal to the object, and the main board 91 is further electrically connected to the light receiving component 20 and is used for controlling the light receiving component 20 to receive an echo light signal reflected by the object.
Alternatively, the main board 91 is disposed between the spacer 70 and the first board 82, and the spacer 70 and the first board 82 are metal pieces. The isolation member 70 and the first plate 82 are both designed to be made of metal pieces, so that an electromagnetic shielding structure of the main board 91 can be formed, the influence of electromagnetic radiation outside the isolation member 70 and the first plate 82 on the main board 91 is shielded, and meanwhile, interference generated during operation of the main board 91 is prevented from being transmitted outside the isolation member 70 and the first plate 82. More specifically, the electromagnetic shielding structure formed by the spacer 70 and the first plate 82 can avoid electromagnetic interference generated between the main board 91 and internal components such as the light emitting component 10 and the light receiving component 20, and ensure normal operation of the main board 91.
It should be noted that, the casing 80 may be made of a metal member instead of the first plate 82, so as to ensure electromagnetic shielding performance of the whole machine.
Alternatively, the first cover plate 75 is disposed between the second cover plate 76 and the first plate 82, and the "spacer 70 is a metal member" described above may be a metal member only for the first cover plate 75 or may be a metal member for the whole spacer 70. When only the first cover plate 75 is a metal member, the spacer 70 may be formed of a combination of a metal member and a non-metal member to reduce the overall weight of the spacer 70 and to reduce the manufacturing cost; for example, the spacer 70 may be formed of a metal member and a non-metal member through a two-shot molding process, or formed of a metal member and a non-metal member through mechanical assembly, or the like.
Alternatively, the main board 91 includes a fifth board 911 facing the first board 82 and a sixth board 912 opposite to the fifth board 911, and the first board 82 may cover the entire fifth board 911, and the spacer 70 may cover a part of the sixth board 912 or may cover the entire sixth board 912. When the spacer 70 covers a portion of the sixth board 912, the spacer 70 may cover an area where the electronic component on the sixth board 912 is located, and expose an area where the electrical interface on the sixth board 912 is located, so as to not only improve electromagnetic shielding performance of the electronic component, but also satisfy normal electrical connection between the motherboard 91 and other components.
Alternatively, the receiving shield 23 on the light receiving module 20 may be designed such that the electromagnetic signal generated by the light receiving module 20 and the electromagnetic signal generated by the motherboard 91 are not prone to crosstalk. Optionally, the receiving board 22 of the light receiving assembly 20 is separately and electrically connected to the main board 91, so as to improve the heat dissipation performance of the optical mechanical system 1, and facilitate the replacement of the receiving board 22.
The light emitting assembly 10 includes a light emitter (not shown in the drawings), a light emitting plate 12 and a light emitting shielding cover 13, the light emitter is mounted on the light emitting plate 12 and electrically connected with the light emitting plate 12, the light emitting plate 12 is electrically connected with the main board 91, the light emitting shielding cover 13 covers the light emitter, and the light emitting shielding cover 13 is provided with a second through hole 131 for passing through a light emitting signal emitted by the light emitter. The emission mask 13 is disposed such that the electromagnetic signal generated by the light emitting assembly 10 and the electromagnetic signal generated by the main board 91 are not easily cross-linked. Optionally, the emitter board 12 is separated from the main board 91, so as to improve the heat dissipation performance of the optical mechanical system 1, and facilitate the operations such as replacement of the emitter board 12.
Optionally, the optical mechanical system 1 further includes an electrical control board 92, where the electrical control board 92 is electrically connected to the main board 91 and the optical scanning assembly 30, and is used to control the optical scanning assembly 30 to move, so as to implement transmitting optical signals to transmit to multiple directions and/or receiving echo optical signals in multiple directions. Optionally, the electric control board 92 is separately arranged with the main board 91 and electrically connected with the main board 91, and the electric control board 92 is separately arranged with the main board 91, so that compared with the integrated arrangement, the heat dissipation performance of the optical mechanical system 1 can be improved, and when the product needs to be replaced or the customer needs are inconsistent, the electric control board 92 can be only disassembled and replaced, the replacement cost is reduced, and the replacement efficiency is improved.
Alternatively, the electric control board 92 and the main board 91 may be respectively disposed on two opposite sides of the optical scanning assembly 30, so as to increase the space between the electric control board 92 and the main board 91 and improve the heat dissipation performance of the optical mechanical system 1.
Alternatively, the electronic control board 92 may be electrically connected to the first optical scanning element 31 for controlling the movement of the first optical scanning element 31, and the electronic control board 92 may be electrically connected to the second optical scanning element 32 for controlling the movement of the second optical scanning element 32. Alternatively, the electronic control board 92 may be provided corresponding to the first light scanning element 31.
Optionally, the optical mechanical system 1 further includes an interface board 93, where the interface board 93 is separately disposed from the main board 91 and electrically connected to the main board 91, and the interface board 93 is configured to provide a power supply signal for at least one of the light emitting component 10, the light receiving component 20, and the light scanning component 30. Because the interface requirements of the users may not be consistent, the interface board 93 and the main board 91 are separately arranged, so that the replacement or maintenance of the interface board 93 can be facilitated, and the heat dissipation performance of the optical-mechanical system 1 can be further improved.
Preferably, the main board 91, the electric control board 92, the transmitting board 12, the receiving board 22 and the interface board 93 are all separately arranged, so that when the product needs to be replaced or the user needs are inconsistent, only part of board paths are replaced and redesigned, the cost and time are saved, and the heat dissipation effect is better.
Optionally, the casing 80 may include a box 83 and a cover 84 connected to the box 83, where the box 83 and the cover 84 together define a first accommodating cavity 81, the electric control board 92 may be disposed near the cover 84, and the main board 91 may be disposed near the bottom of the box 83. Further, a visual window corresponding to the electric control board 92 may be provided on the cover 84, so that a worker can check the operation condition of the electric control board 92 and find out in time when a fault occurs.
In order to facilitate heat dissipation of the light emitting assembly 10, the light receiving assembly 20, the main board 91, the electric control board 92, the interface board 93 and other devices in the first accommodating cavity 81 during use, and ensure normal operation of the optical mechanical system 1, optionally, a first heat conducting member 941 may be disposed between the emitting board 12 of the light emitting assembly 10 and the housing 80; and/or, a second heat conductive member 942 may be disposed between the receiving plate 22 of the light receiving assembly 20 and the housing 80; and/or a fourth heat conductive member (not shown) may be provided between the main board 91 and the case 80; and/or a fifth heat conductive member (not shown) may be provided between the electronic control board 92 and the housing 80; and/or a sixth heat conductive member (not shown) may be provided between the interface board 93 and the housing 80. So that heat generated in the use process of the light emitting assembly 10, the light receiving assembly 20, the main board 91, the electric control board 92 and the interface board 93 can be transferred to the housing 80 via the corresponding heat conducting members, and further be dissipated outwards.
It should be noted that, the transmitting board 12 of the light emitting module 10, the receiving board 22 of the light receiving module 20, the main board 91, the electronic control board 92, and the interface board 93 may be directly connected to the housing 80 through corresponding heat conductive members, or may be connected to the housing 80 through an intermediate member, which is not limited in the present application. In the embodiment of the present application, the main board 91, the electronic control board 92 and the interface board 93 are directly connected to the housing 80 through corresponding heat conductive members, and the transmitting board 12 and the receiving board 22 are connected to the housing 80 through intermediate members, which will be described in more detail below.
Alternatively, both the light emitting assembly 10 and the light receiving assembly 20 may be connected to the spacer 70, and a third heat conductive member (not shown) may be provided between the spacer 70 and the housing 80, and the emitting plate 12 and the receiving plate 22 may be connected to the housing 80 through the spacer 70, so that heat generated from the emitting plate 12 and the receiving plate 22 may be transferred to the spacer 70 and then transferred to the housing 80 by the spacer 70 and then dissipated outwards.
Optionally, the emitter plate 12 has a first plate surface 121 and a second plate surface 122 opposite to the first plate surface 121, the first plate surface 121 is provided with the light emitters, and a first heat conducting member 941 is disposed between the second plate surface 122 and the spacer 70, so that heat generated by the emitter plate 12 can be transferred to the spacer 70 through the first heat conducting member 941, and then transferred to the housing 80 by the spacer 70, and further dissipated outwards. The first heat conductive member 941 may include a graphene layer and a heat conductive gel layer. Optionally, the emitter plate 12 includes a substrate and a conductive layer disposed on the substrate, where the substrate may be a plate body with better heat dissipation performance, for example, a ceramic plate may be used as the substrate.
Optionally, referring to fig. 7, the receiving plate 22 has a third plate surface 221 and a fourth plate surface 222 opposite to the third plate surface 221, the third plate surface 221 is provided with the light receiver 21, a first sub-heat-conducting member 9421 is disposed between the third plate surface 221 and the receiving shield 23, a second sub-heat-conducting member 9422 is disposed between the fourth plate surface 222 and the receiving shield 23, a third sub-heat-conducting member 9423 is disposed between the receiving shield 23 and the spacer 70, and the second heat-conducting member 942 includes the first sub-heat-conducting member 9421, the second sub-heat-conducting member 9422 and the third sub-heat-conducting member 9423, so that heat generated by the receiving plate 22 can be transferred to the receiving shield 23 and the spacer 70, and heat on the spacer 70 can be further transferred to the housing 80, and further dissipated outwards. Alternatively, the first and second sub-thermal conductors 9421, 9422 may each include a layer of thermally conductive gel, and the third sub-thermal conductor 9423 includes a layer of graphene and a layer of thermally conductive gel.
Optionally, the receiving shield 23 may include a first sub-shield 232 and a second sub-shield 233 respectively located on a side of the third board 221 and a side of the fourth board 222, where the first sub-shield 232 and the second sub-shield 233 are connected to the receiving board 22.
Optionally, the third heat conducting member, the fourth heat conducting member, the fifth heat conducting member, and the sixth heat conducting member may each include a heat conducting gel layer.
Alternatively, referring to fig. 9, the first plate 82 has an inner plate surface 821 forming the first accommodating cavity 81, the inner plate surface 821 includes a first region 8211, the main plate 91 is disposed corresponding to the first region 8211, the inner plate surface 821 further includes a second region 8212 connected to the first region 8211, and the light emitting assembly 10 is disposed corresponding to the second region 8212; and/or, the inner plate surface 821 further includes a third region 8213 connecting the first region 8211, and the light receiving element 20 is disposed corresponding to the third region 8213; and/or, the inner plate surface 821 further includes a fourth region 8214 connected to the first region 8211, and the optical scanning assembly 30 is disposed corresponding to the fourth region 8214. The light emitting assembly 10, the light receiving assembly 20, the light scanning assembly 30, the main board 91 and the spacers 70 covering the main board 91 are distributed at different positions on the inner board 821, so that the assembly is more convenient, the overall layout is reasonable, and the space utilization of the optical-mechanical system 1 is improved.
Alternatively, referring to fig. 10 and 11, the second light scanning element 32 is located between the first light scanning element 31 and the light emitting component 10 along the first linear direction m. The emitted light signal is emitted through the second light scanning element 32, and the second light scanning element 32 is located between the first light scanning element 31 and the light emitting component 10, so that the emitting position of the emitted light signal can be located approximately in the middle of the optical system 1, which is beneficial to realizing calibration of the optical system 1 and symmetry of the near-distance point cloud.
Along the first linear direction m, the second optical scanning element 32 is located between the first optical scanning element 31 and the optical emission component 10, so that a transmission path of an emitted optical signal emitted by the optical emission component 10 from the optical emission component 10 to the first optical scanning element 31 can be prolonged, which is favorable for realizing reduction of a divergence angle and improvement of a ranging capability of the optical-mechanical system 1. Specifically, the optical mechanical system 1 satisfies the following conditional expression one:wherein SNR is the signal-to-noise ratio, P, of the echo optical signal t For total outgoing power, A rec Receiving section, A FOV For receiving the angle of view, it can be seen from the above condition that the angle of view A is received FOV The size of the noise in the echo optical signal is determined by the size of the receiving angle A FOV The larger the received noise is, and therefore, the reception angle of view a needs to be reduced FOV . Receiving angle of view A FOV Related to the size of the light receiver 21 in the light receiving assembly 20 and the focal length of the receiving lens; for example, if the divergence angle δθ is 0.2×0.2 °, the size of the light receiver 21 or the focal length of the receiving lens may be customized so that the receiving field angle a is the same as that of the receiving lens FOV Slightly greater than 0.2 ° by 0.2 ° to ensure that all echo optical signals can be received by the optical receiver 21, avoiding loss of optical signals; in combination with the following conditional second of the opto-mechanical system 1: δθ=l/f, where δθ is the divergence angle of the emitted light signal, L is the light emitting area of the light emitting component 10, and f is the focal length of the emission lens in the light emitting component 10, as can be seen from the above two conditions, the tele system can achieve the reduction of the divergence angle δθ, and after the reduction of the divergence angle δθ, the receiving view angle a can be made FOV Is made very small, thereby realizing noise reduction and further improving the detection capability of the optical-mechanical system 1. In addition, the transmission path of the emitted optical signal is prolonged, and the crosstalk between channels can be reduced.
It should be noted that, along the first linear direction m, the second optical scanning element 32 is located between the first optical scanning element 31 and the optical emission component 10, and the emitted light signal emitted by the optical emission component 10 sequentially passes through the first optical scanning element 31 and the second optical scanning element 32, so that the emitted light signal emitted by the optical emission component 10 may be blocked by the second optical scanning element 32 during reaching the first optical scanning element 31, and for this reason, the optical mechanical system 1 of the embodiment of the present application may further include a first optical path conversion component 40, where the first optical path conversion component 40 is disposed between the optical emission component 10 and the first optical scanning element 31 along the transmission path of the emitted light signal. The first optical path conversion component 40 is configured such that the transmission path of the emitted light signal emitted by the light emitting component 10 is converted from sequentially passing through the first optical scanning element 31 and the second optical scanning element 32 to sequentially passing through the first optical path conversion component 40, the first optical scanning element 31 and the second optical scanning element 32, so that the emitted light signal is not blocked by the second optical scanning element 32 in the process of reaching the first optical path conversion component 40 from the light emitting component 10 and the process of reaching the first optical scanning element 31 from the first optical path conversion component 40, and normal transmission of the emitted light signal is ensured.
Optionally, the first optical path conversion component 40 includes at least one first reflecting element 41, and the transmission path of the emitted optical signal may deflect through the reflecting surface of the first reflecting element 41, so as to ensure that the emitted optical signal can be smoothly transmitted to the first optical scanning element 31.
The "second light scanning element 32 is located between the first light scanning element 31 and the light emitting device 10 along the first straight line direction m" described above may be such that the second light scanning element 32, the first light scanning element 31, and the light emitting device 10 are all located on substantially the same straight line, and the second light scanning element 32 is located between the first light scanning element 31 and the light emitting device 10, or such that the projection of the second light scanning element 32, the first light scanning element 31, and the light emitting device 10 on the same straight line satisfies: the second optical scanning element 32 is located between the first optical scanning element 31 and the light emitting component 10, so as to reduce the assembly precision requirement of the second optical scanning element 32, the first optical scanning element 31 and the light emitting component 10 and reduce the assembly difficulty.
Alternatively, the light emitting assembly 10 may be located on a side of the second light scanning element 32 facing away from the subject in the second straight direction n, see fig. 10; the light emitting component 10 may also be located on a side of the second light scanning element 32 close to the object, and referring to fig. 11, the second straight line direction n intersects the first straight line direction m. Referring to fig. 10, when the light emitting assembly 10 is located on a side of the second light scanning element 32 facing away from the subject in the second straight direction n, optionally, one of the first reflective elements 411 of the first light path conversion assembly 40 may be distributed with the first light scanning element 31 along the second straight direction n and located on a side of the first light scanning element 31 facing away from the subject. In the embodiment of the present application, the reference numeral 411 of one of the first reflective elements 411 is denoted as 411, so as to distinguish the first optical path changing component 40 from the reference numerals 41 of the other first reflective elements 41 when the first optical path changing component includes a plurality of first reflective elements 41. In this case, the first light path conversion unit 40 may include only one first reflective element 41.
Referring to fig. 11, when the light emitting assembly 10 is located on a side of the second light scanning element 32 close to the object along the second straight line direction n, optionally, one of the first reflective elements 411 may be distributed along the second straight line direction n with the first light scanning element 31 and located on a side of the first light scanning element 31 facing away from the object, and the other first reflective element 412 may be distributed along the second straight line direction n with the second light scanning element 32 and located on a side of the second light scanning element 32 facing away from the object, and the other first reflective element 412 is located between the light emitting assembly 10 and one of the first reflective elements 411 along the transmission path of the emitted light signal. In the embodiment of the present application, one of the first reflective elements 411 is denoted by 411, and the other first reflective element 412 is denoted by 412 for distinction.
It should be noted that the reflecting element 41 may be replaced by a refractive element, etc., and the specific structural design of the first optical path conversion element 40 is not limited in the embodiment of the present application.
Alternatively, the second light scanning element 32 is located between the first light scanning element 31 and the light receiving element 20 along the first linear direction m. The echo optical signal is emitted into the optical system 1 through the second optical scanning element 32, and the second optical scanning element 32 is located between the first optical scanning element 31 and the optical receiving assembly 20, so that the incident position of the echo optical signal can be located approximately in the middle of the optical system 1, which is beneficial to realizing the calibration of the optical system 1 and the symmetry of the near-distance point cloud.
Along the first linear direction m, the second optical scanning element 32 is located between the first optical scanning element 31 and the optical receiving assembly 20, so that a transmission path of the echo optical signal from the first optical scanning element 31 to the optical receiving assembly 20 can be prolonged, which is beneficial to reducing noise received by the optical receiver 21 and improving the ranging capability of the optical mechanical system 1. Specifically, due to machining tolerance or cost, the photosurface of the optical receiver 21 is generally about 0.5mm, and for a system with a smaller divergence angle, the short focal length design can make the receiving view angle corresponding to the photosurface of 0.5mm have larger redundancy, so that the received noise is increased, while the focal length of the optical mechanical system 1 of the present application can be located above 50mm to reduce the receiving view angle. The arrangement of the second light path conversion component 50 and/or the first light path conversion component 40 can also improve the space utilization rate of the whole machine, and the structure is more compact.
When the optical-mechanical system 1 is applied to automatic driving, the detection capability of 250m@10% and the resolution capability smaller than 0.1 degree can be achieved, and the requirement of high-precision imaging is met.
It should be noted that, in the first linear direction m, the second optical scanning element 32 is located between the first optical scanning element 31 and the optical receiving assembly 20, and the echo optical signal sequentially passes through the second optical scanning element 32 and the first optical scanning element 31 and then reaches the optical receiving assembly 20, so that the echo optical signal may be blocked by the second optical scanning element 32 during the process of reaching the optical receiving assembly 20 from the first optical scanning element 31, and in this regard, the optical mechanical system 1 of the embodiment of the present application may further include a second optical path conversion assembly 50, where the second optical path conversion assembly 50 is disposed between the optical receiving assembly 20 and the first optical scanning element 31 along the transmission path of the echo optical signal. The arrangement of the second optical path conversion assembly 50 makes the transmission path of the echo optical signal reach the optical receiving assembly 20 from passing through the first optical scanning element 31 and then reach the optical receiving assembly 20 after being converted into passing through the first optical scanning element 31 and the second optical path conversion assembly 50, so that the normal transmission of the echo optical signal can be ensured without being blocked by the second optical scanning element 32 in the process of reaching the second optical path conversion assembly 50 from the first optical scanning element 31 and the process of reaching the optical receiving assembly 20 from the second optical path conversion assembly 50.
Optionally, the second optical path conversion assembly 50 includes at least one second reflecting element 51, and the transmission path of the echo optical signal can deflect through the reflecting surface of the second reflecting element 51, so as to ensure that the echo optical signal can be smoothly transmitted to the optical receiving assembly 20.
The "second light scanning element 32 is located between the first light scanning element 31 and the light receiving device 20 along the first straight line direction m" described above may be that the second light scanning element 32, the first light scanning element 31 and the light receiving device 20 are all located on the same straight line, and the second light scanning element 32 is located between the first light scanning element 31 and the light receiving device 20, or that the projection of the second light scanning element 32, the first light scanning element 31 and the light receiving device 20 on the same straight line satisfies: the second optical scanning element 32 is located between the first optical scanning element 31 and the light receiving component 20, so as to reduce the assembly precision requirement of the second optical scanning element 32, the first optical scanning element 31 and the light receiving component 20 and reduce the assembly difficulty.
Alternatively, the light receiving element 20 may be located on a side of the second light scanning element 32 close to the subject in the second straight direction n, as can be seen from fig. 10 and 11; the light receiving element 20 may also be located on a side of the second light scanning element 32 facing away from the subject, as can be seen in fig. 12 and 13. Referring to fig. 10 and 11, when the light receiving assembly 20 is located on a side of the second light scanning element 32 close to the object along the second straight line direction n, optionally, the second light path conversion assembly 50 includes all the second reflecting elements 51, one of the second reflecting elements 511 may be distributed with the first light scanning element 31 along the second straight line direction n and located on a side of the first light scanning element 31 away from the object, and the other second reflecting element 512 may be distributed with the second light scanning element 32 along the second straight line direction n and located on a side of the second light scanning element 32 away from the object, and further another second reflecting element 512 is located between one of the second reflecting elements 511 and the light receiving assembly 20 along the transmission path of the echo light signal. In the embodiment of the present application, one of the second reflective elements 511 is denoted by reference numeral 511, and the other second reflective element 512 is denoted by reference numeral 512 for distinction.
Referring to fig. 12 and 13, when the light receiving assembly 20 is located on a side of the second light scanning element 32 facing away from the subject in the second straight direction n, optionally, one of the second reflecting elements 511 may be distributed with the first light scanning element 31 in the second straight direction n and located on a side of the first light scanning element 31 facing away from the subject, among all the second reflecting elements 51. In the embodiment of the present application, the reference numeral 511 of one of the second reflecting elements 511 is denoted as 511, so that when the second optical path changing component 50 includes a plurality of second reflecting elements 51, it is distinguished from the reference numerals 51 of the other second reflecting elements 51. In this case, the second light path conversion assembly 50 may include only one second reflection element 51.
Alternatively, in the second straight direction n, when one of the second reflecting elements 511 is located between one of the first reflecting elements 411 and the first optical scanning element 31, in order to avoid that one of the second reflecting elements 511 blocks the emitted light signal from reaching the first optical scanning element 31, one of the second reflecting elements 511 may be provided with a second light through hole (not shown in the figure) so that the emitted light signal may reach the first optical scanning element 31 through the second light through hole.
Alternatively, referring to fig. 14, when one of the first reflective elements 411 is located between one of the second reflective elements 511 and the first optical scanning element 31 along the second straight direction n, in order to avoid that one of the first reflective elements 411 blocks the echo optical signal from reaching one of the second reflective elements 511 by the first optical scanning element 31, one of the first reflective elements 411 may be provided with a first light through hole (not shown in the figure), so that the echo optical signal may reach one of the second reflective elements 511 after passing through the first light through hole.
It should be noted that, in an exemplary embodiment, the second optical scanning element 32 may be located between the first optical scanning element 31 and the light emitting component 10 along the first linear direction m, and the second optical scanning element 32 may be located between the first optical scanning element 31 and the light receiving component 20 along the first linear direction m. In another exemplary scenario, referring to fig. 15, the second light scanning element 32 may be located between the first light scanning element 31 and the light emitting component 10 along the first straight line direction m, while the second light scanning element 32 is also located between the light emitting component 10 and the light receiving component 20 along the first straight line direction m. In yet another exemplary aspect, the second light scanning element 32 may be located between the first light scanning element 31 and the light receiving assembly 20 in the first straight line direction m, while the second light scanning element 32 is also located between the light emitting assembly 10 and the light receiving assembly 20 in the first straight line direction m. When the second light scanning element 32 is located between the light emitting component 10 and the light receiving component 20 along the first linear direction m, the distance between the light emitting component 10 and the light receiving component 20 can be made large enough, which is beneficial to heat dissipation.
It should be noted that, as will be understood by those skilled in the art, the positions of the light emitting component 10 and the light receiving component 20 in all the drawings of the embodiments of the present application may be changed.
Optionally, referring to fig. 16, the optical system 1 further includes a light collimation component 60, where the light collimation component 60 is located between the light emission component 10 and the first light scanning element 31 along the transmission path of the emitted light signal. The light collimation assembly 60 is arranged to enable the emitted light signal emitted by the optical system 1 to maintain a higher power density when the emitted light signal irradiates a far-distance object. Further alternatively, the light collimating assembly 60 includes a fast axis collimating mirror 61 and a slow axis collimating mirror 62, the fast axis collimating mirror 61 being located between a first reflecting element 41 and the light emitting assembly 10, and the slow axis collimating mirror 62 being located between a first reflecting element 41 and the first light scanning element 31. The fast axis collimating lens 61 and the slow axis collimating lens 62 can collimate the fast axis and the slow axis, thereby enhancing the collimating effect and improving the output brightness of the emitted light signals.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present application, unless otherwise indicated, "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.
The foregoing disclosure is illustrative of the present application and is not to be construed as limiting the scope of the application, which is defined by the appended claims.
Claims (10)
1. An optical-mechanical system, comprising:
a housing formed with a first accommodation chamber;
the light emitting assembly is positioned in the first accommodating cavity and is used for emitting an emitted light signal to the shot object;
the light receiving component is positioned in the first accommodating cavity and is used for receiving echo light signals reflected by the shot object;
the isolation piece is positioned in the first accommodating cavity and comprises a surrounding plate, a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively positioned on two opposite sides of the surrounding plate and are connected with the surrounding plate to jointly form a second accommodating cavity, a first light inlet, a second light inlet, a first light outlet and a second light outlet which are communicated with the second accommodating cavity are formed in the surrounding plate, and the light emitting component is arranged corresponding to the first light inlet and is used for emitting the emitted light signals in the second accommodating cavity, and the emitted light signals are emitted through the first light outlet; the light receiving component is arranged corresponding to the second light outlet and is used for receiving echo light signals of the shot object, which are emitted into the second accommodating cavity through the second light inlet.
2. The optical-mechanical system of claim 1, wherein the spacer further comprises:
the baffle is located the second holds the chamber, the baffle will the second holds the chamber split and includes the transmission light passageway reaches the echo light passageway, first income light mouth with first light outlet with the transmission light passageway intercommunication, second income light mouth with second light outlet with echo light passageway intercommunication.
3. The optical-mechanical system of claim 1, further comprising:
the optical scanning assembly is positioned in the first accommodating cavity and comprises a first optical scanning element and a second optical scanning element, the first optical scanning element is arranged corresponding to the first light outlet, and the emitted light signals are transmitted to the shot object through the first optical scanning element and the second optical scanning element after being emitted through the first light outlet; the first optical scanning element is also arranged corresponding to the second light inlet, and the echo optical signals enter the second accommodating cavity through the second light inlet after being sequentially transmitted by the second optical scanning element and the first optical scanning element.
4. The optical-mechanical system of claim 3, further comprising:
The light barrier is positioned in the first accommodating cavity and arranged on one side of the second light scanning element, which is close to the isolating piece, one end of the light barrier is positioned between the second light scanning element and the first light scanning element, and the other end extends towards the direction, away from the first light scanning element, of the second light scanning element and is connected with the shell.
5. The optical-mechanical system of claim 3, wherein the shroud comprises:
the first plate body is provided with the first light outlet and the second light inlet, the first plate body is sunken towards the second accommodating cavity to form an avoidance interval, and the second optical scanning element is arranged in the avoidance interval.
6. The optical-mechanical system of claim 1, further comprising:
the extinction fin is positioned in the first accommodating cavity and corresponds to the first light outlet and the second light inlet, and the extinction fin is arranged on one side of the first cover plate, which is away from the second cover plate.
7. The optical-mechanical system of claim 6, wherein the housing comprises:
a first plate having an inner plate surface forming the first accommodation chamber, the first cover plate being located between the inner plate surface and the second cover plate;
The baffle is positioned between the extinction fins and the isolating piece, one end of the baffle is connected with the inner plate surface, the other end of the baffle extends towards the direction close to the second cover plate, and the surface of the baffle, deviating from the inner plate surface, is positioned on one side, away from the inner plate surface, of the extinction fins.
8. The optical-mechanical system of claim 6, wherein the matting fins comprise:
the carrier plate is positioned in the first accommodating cavity and on one side of the first cover plate, which is away from the second cover plate, and the carrier plate is arranged corresponding to the first light outlet and the second light inlet and is connected with the shell;
the extinction cylinders are connected with the carrier plate, extinction holes are formed in the extinction cylinders, and the extending direction of the extinction holes is from the first cover plate to the second cover plate.
9. The optical-mechanical system of claim 1, wherein the light receiving assembly comprises:
an optical receiver;
the light receiver is arranged on the receiving plate and is electrically connected with the receiving plate;
and the receiving shielding cover is provided with a first through hole for enabling the echo optical signal to pass through to reach the optical receiver.
10. The optical-mechanical system of claim 9, wherein the light-receiving assembly further comprises:
the optical filter is arranged on the light incident side of the light receiver and is arranged at intervals with the light receiver;
the shielding ring is arranged around the periphery of the light receiver, and two ends of the shielding ring are respectively abutted against the surface of the light receiver installed by the receiving plate and the surface of the optical filter facing the light receiver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210468839.2A CN117008082A (en) | 2022-04-29 | 2022-04-29 | Optical-mechanical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210468839.2A CN117008082A (en) | 2022-04-29 | 2022-04-29 | Optical-mechanical system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117008082A true CN117008082A (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210468839.2A Pending CN117008082A (en) | 2022-04-29 | 2022-04-29 | Optical-mechanical system |
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| Country | Link |
|---|---|
| CN (1) | CN117008082A (en) |
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2022
- 2022-04-29 CN CN202210468839.2A patent/CN117008082A/en active Pending
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