CN212321831U - Planar array type laser radar light path system and laser radar - Google Patents
Planar array type laser radar light path system and laser radar Download PDFInfo
- Publication number
- CN212321831U CN212321831U CN202020781225.6U CN202020781225U CN212321831U CN 212321831 U CN212321831 U CN 212321831U CN 202020781225 U CN202020781225 U CN 202020781225U CN 212321831 U CN212321831 U CN 212321831U
- Authority
- CN
- China
- Prior art keywords
- array
- transmitting
- module
- receiving
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims description 29
- 239000000758 substrate Substances 0.000 claims description 29
- 230000003287 optical effect Effects 0.000 claims description 23
- 239000002184 metal Substances 0.000 claims description 9
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 150000003071 polychlorinated biphenyls Chemical group 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- YFSLABAYQDPWPF-UHFFFAOYSA-N 1,2,3-trichloro-4-(2,3,5-trichlorophenyl)benzene Chemical compound ClC1=CC(Cl)=C(Cl)C(C=2C(=C(Cl)C(Cl)=CC=2)Cl)=C1 YFSLABAYQDPWPF-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The utility model discloses a planar array laser radar light path system, include: the array type transmitting module comprises a plurality of laser diodes which are arranged according to an array, and laser beams output by the laser diodes form a laser beam area array; an array-type receiving module, the array-type transmitting module comprising a plurality of avalanche photodiodes arranged in an array; and the lens module is arranged between the array type transmitting module and is used for restricting the transmission of the laser beam. According to the technical scheme, the transmitting end and the receiving end are designed into the planar array type transmitting and the planar array type receiving, so that the high integration of the transmitting assembly and the receiving assembly is realized, the production process is simplified, the light modulation efficiency is improved, and the product cost is reduced; and compared with linear array transmission, planar array transmission can greatly improve the scanning resolution of the laser radar and give consideration to the focusing performance in the horizontal and vertical directions, so that the positive focusing effect is better.
Description
Technical Field
The utility model relates to a laser radar field, in particular to area array laser radar light path system and laser radar.
Background
At present, the light path schemes of the rotary laser radar are mainly divided into three types: the first is to use a point-to-point scheme, i.e., one transmission corresponds to one reception; the second adopts a linear array to linear array scheme, and the third adopts a linear array to linear array scheme. The point-to-point scheme has low production efficiency and high light modulation operation requirement, and can not meet the requirement of mass production. The linear array is the mainstream scheme at present, because of the reason of a light source emitting device, an emitting module is more complex, and the energy gathering effect in the vertical direction is weaker, so that the radar ranging is influenced; when the linear array to linear array scheme exceeds 32 lines of laser radar, a plurality of transmitting plates and a plurality of receiving plates are needed, and the light modulation difficulty is increased. The linear array to area array scheme is changed from the linear array to the linear array in that the receiving plate adopts an area array, a plurality of transmitting line plates are adopted to correspond to one receiving panel, but the requirement on the position precision of a receiving end device is high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a surface array formula laser radar light path system and laser radar can simplify production technology, improve the efficiency of adjusting of light.
According to the utility model discloses a planar array laser radar optical path system of first aspect embodiment, include: the array type transmitting module comprises a plurality of laser diodes which are arranged according to an array, and laser beams output by the laser diodes form a laser beam area array; an array-type receiving module, the array-type transmitting module comprising a plurality of avalanche photodiodes arranged in an array; and the lens module is arranged between the array type transmitting module and is used for restricting the transmission of the laser beam.
According to some embodiments of the first aspect of the present invention, the array type emission module further comprises an emission plate and a plurality of emission device bases, a plurality of the emission device bases are disposed on the emission plate, a plurality of the laser diodes are disposed in a plurality of one-to-one correspondence to the emission device bases on the side, and the emission directions of the laser diodes are perpendicular to the emission plate.
According to some embodiments of the first aspect of the present invention, the transmitting board comprises a transmitting end PCB board, a transmitting end ceramic substrate, the transmitting end ceramic substrate is disposed on the transmitting end PCB board, and the transmitting optical device base is disposed on the transmitting end ceramic substrate.
According to some embodiments of the first aspect of the present invention, the light emitting device base is provided with a collimating fiber positioned above the light emitting surface of the laser diode.
According to some embodiments of the first aspect of the present invention, the upper side periphery of the transmitting end ceramic substrate is provided with a transmitting module packaging metal frame.
According to the utility model discloses some embodiments of the first aspect, array receiving module still includes receiving terminal PCB board, receiving terminal ceramic substrate sets up on the receiving terminal PCB board, it is a plurality of avalanche photodiode sets up on the receiving terminal ceramic substrate.
According to some embodiments of the first aspect of the present invention, the receiving end ceramic substrate is provided with a receiving module encapsulation metal frame at its upper side periphery.
According to some embodiments of the first aspect of the present invention, the lens module comprises a transmitting end reflector module, a transmitting end collimating lens module, a receiving end reflector module; the emitting end reflector module is arranged between the light emitting side of the array emitting module and the input side of the emitting end collimating lens module; the output side of the transmitting end collimating lens module is used for outputting laser beams to a measured target, and the input side of the receiving end collimating lens module is used for receiving the laser beams reflected by the measured target; the receiving end reflector module is arranged between the receiving end collimating lens module and the light receiving surface of the array type receiving module.
According to some embodiments of the first aspect of the present invention, an optical filter is disposed between the receiving end mirror module and the illuminated surface of the array receiving module.
According to the utility model discloses laser radar of second aspect embodiment, including the laser radar body with set up in this is internal for the laser radar this internal area array laser radar light path system.
According to the utility model discloses above-mentioned embodiment's area array formula laser radar light path system and laser radar has following beneficial effect at least: according to the technical scheme, the transmitting end and the receiving end are designed into the planar array type transmitting and the planar array type receiving, so that the high integration of the transmitting assembly and the receiving assembly is realized, the production process is simplified, the light modulation efficiency is improved, and the product cost is reduced; and compared with linear array transmission, planar array transmission can greatly improve the scanning resolution of the laser radar and give consideration to the focusing performance in the horizontal and vertical directions, so that the positive focusing effect is better.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a plan view of a planar array lidar optical path system according to a first embodiment of the present invention;
fig. 2 is a perspective view of a planar array lidar optical path system according to a first embodiment of the present invention;
fig. 3 is a perspective view of an array type transmitter module according to a first embodiment of the present invention;
fig. 4 is a perspective view of an array receiving module according to a first embodiment of the present invention.
Reference numerals:
an array type emitting module 100, a laser diode 110, an emitting device base 120, an emitting end PCB 130, an emitting end ceramic substrate 140, a collimating fiber 150, an emitting module packaging metal frame 160, an array type receiving module 200, an avalanche photodiode 210, a receiving end PCB 220, a receiving end ceramic substrate 230, a receiving module packaging metal frame 240, a light emitting device base, a collimating fiber 150, a light emitting device,
The lens module 300, the transmitting end mirror module 310, the transmitting end collimating lens module 320, the receiving end collimating lens module 330, the receiving end mirror module 340, and the optical filter 350.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 and fig. 2, in order to implement the present invention, a planar array laser radar optical path system includes: an array type transmitting module 100, wherein the array type transmitting module 100 comprises a plurality of laser diodes 110 arranged in an array, and laser beams output by the plurality of laser diodes 110 form a laser beam area array, as shown in fig. 3; an array receiving module 200, said array transmitting module 100 comprising a plurality of avalanche photodiodes 210 arranged in an array, see fig. 4; the lens module 300 is disposed between the array type emitting module 100 and the array type emitting module 100 for restricting transmission of the laser beam.
According to the technical scheme, the transmitting end and the receiving end are designed into the planar array type transmitting and the planar array type receiving, so that the high integration of the transmitting assembly and the receiving assembly is realized, the production process is simplified, the light modulation efficiency is improved, and the product cost is reduced; and compared with linear array transmission, planar array transmission can greatly improve the scanning resolution of the laser radar and give consideration to the focusing performance in the horizontal and vertical directions, so that the positive focusing effect is better.
In some embodiments of the first aspect of the present invention, the array is two rows of laser diodes 110 arranged in parallel and staggered manner, and this design increases the number of laser diodes 110 in a unit area, thereby improving the scanning resolution of the laser radar. Of course, the two parallel staggered arrays are only one preferred embodiment in the present invention, and may also be other planar array structures (for example, 16 lines are taken as an example in the figure, and may also be 32 lines, 64 lines, 128 lines, 256 lines, etc.).
In some embodiments of the first aspect of the present invention, the array-type emitting module 100 further comprises an emitting board and a plurality of emitting-light-device bases 120, wherein the plurality of emitting-light-device bases 120 are disposed on the emitting board, the plurality of laser diodes 110 are disposed on the side of the plurality of emitting-light-device bases 120 in a one-to-one correspondence, and the emitting direction of the laser diodes 110 is perpendicular to the emitting board. Through the design of packaging the laser diode 110 on the side surface of the base 120 of the emitting optical device, the emitting direction of the laser diode 110 can be changed from parallel to vertical to the emitting plate, thereby providing a foundation for the rectangular surface array type emitting mode formed by a plurality of laser diodes 110, completely subverting the mode that the laser diode 110 can only emit light in the horizontal linear array on the linear array emitting plate, and getting rid of the limitation of linear array light emitting.
The utility model discloses in some embodiments of the first aspect, the expelling plate includes expelling end PCB board 130, expelling end ceramic substrate 140 sets up on the expelling end PCB board 130, it is a plurality of emitting light device base 120 is located on the expelling end ceramic substrate 140, because ceramic substrate's anti deformability is outstanding, laser diode 110 passes through emitting light device base 120 to be fixed at expelling end ceramic substrate 140, can greatly reduce laser diode 110's position and angle change, reduces the degree of difficulty and the number of times of adjusting of light.
In some embodiments of the first aspect of the present invention, the collimating optical fiber 150 is disposed on the emitting optical device base 120 and located on the upper side of the light emitting surface of the laser diode 110, and the collimating optical fiber 150 can constrain the laser beam, reduce the light emitting angle, and improve the collimation of the laser beam.
In some embodiments of the first aspect of the present invention, the upper periphery of the transmitting end ceramic substrate 140 is provided with a transmitting module packaging metal frame 160, which can assist the ceramic substrate to further improve the deformation resistance.
The utility model discloses in some embodiments of the first aspect, array receiving module 200 still includes receiving terminal PCB board 220, receiving terminal ceramic substrate 230 sets up on the receiving terminal PCB board 220, and is a plurality of avalanche photodiode 210 sets up on the receiving terminal ceramic substrate 230, because ceramic substrate's anti deformability is outstanding, avalanche photodiode 210 fixes at receiving terminal ceramic substrate 230, can greatly reduce avalanche photodiode 210's position and angle variation, reduces the light of receiving terminal and adjusts the degree of difficulty and number of times.
In some embodiments of the first aspect of the present invention, the upper periphery of the receiving end ceramic substrate 230 is provided with a receiving module packaging metal frame 240, and the metal frame can assist the ceramic substrate to further improve the deformation resistance.
In some embodiments of the first aspect of the present invention, the lens module 300 includes a transmitting end mirror module 310, a transmitting end collimating lens module 320, a receiving end collimating lens module 330, and a receiving end mirror module 340; the emitter mirror module 310 is disposed between the light emitting side of the array emitter module 100 and the input side of the emitter collimating lens module 320; the output side of the transmitting end collimating lens module 320 is used for outputting a laser beam to a measured target, and the input side of the receiving end collimating lens module 330 is used for receiving the laser beam reflected by the measured target; the receiving end mirror module 340 is disposed between the receiving end collimating lens module 330 and the light receiving surface of the array receiving module 200. The reflector module can reduce the volume of the laser radar on the basis of ensuring the optical distance, and the collimating lens module is used for improving the collimation of the laser beam.
In some embodiments of the first aspect of the present invention, an optical filter 350 is disposed between the receiving end mirror module 340 and the light receiving surface of the array receiving module 200, and the optical filter 350 is used for gating the laser beam and only allowing the laser beam with a specific wavelength to pass through.
According to the utility model discloses laser radar of second aspect embodiment, including the laser radar body with set up in this is internal for the laser radar this internal area array laser radar light path system.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A planar array type laser radar optical path system is characterized by comprising:
the array type transmitting module comprises a plurality of laser diodes which are arranged according to an array, and laser beams output by the laser diodes form a laser beam area array;
an array-type receiving module, the array-type transmitting module comprising a plurality of avalanche photodiodes arranged in an array;
and the lens module is arranged between the array type transmitting module and is used for restricting the transmission of the laser beam.
2. The optical system according to claim 1, wherein the array-type transmitting module further comprises a transmitting plate and a plurality of transmitting-light device pads, the plurality of transmitting-light device pads are disposed on the transmitting plate, the plurality of laser diodes are disposed on the side surfaces of the plurality of transmitting-light device pads in a one-to-one correspondence, and the transmitting direction of the laser diodes is perpendicular to the transmitting plate.
3. The optical path system according to claim 2, wherein the transmitting board comprises a transmitting end PCB board, a transmitting end ceramic substrate, the transmitting end ceramic substrate is disposed on the transmitting end PCB board, and a plurality of the transmitting optical device pads are disposed on the transmitting end ceramic substrate.
4. The optical system of claim 2, wherein the light emitting device base is provided with a collimating fiber on the upper side of the light emitting surface of the laser diode.
5. The optical path system of the planar array lidar according to claim 3, wherein a metal frame for encapsulating the transmitting module is disposed on the periphery of the upper side of the ceramic substrate of the transmitting end.
6. The optical system of claim 1, wherein the array receiving module further comprises a receiving end PCB board, a receiving end ceramic substrate, the receiving end ceramic substrate is disposed on the receiving end PCB board, and a plurality of the avalanche photodiodes are disposed on the receiving end ceramic substrate.
7. The optical system of claim 6, wherein the receiving end ceramic substrate is provided with a receiving module packaging metal frame at the upper periphery.
8. The area array type lidar optical path system of claim 1, wherein the lens module comprises a transmitting end reflector module, a transmitting end collimating lens module, a receiving end collimating lens module, and a receiving end reflector module; the emitting end reflector module is arranged between the light emitting side of the array emitting module and the input side of the emitting end collimating lens module; the output side of the transmitting end collimating lens module is used for outputting laser beams to a measured target, and the input side of the receiving end collimating lens module is used for receiving the laser beams reflected by the measured target; the receiving end reflector module is arranged between the receiving end collimating lens module and the light receiving surface of the array type receiving module.
9. The optical path system of claim 8, wherein a filter is disposed between the receiving end reflector module and the light receiving surface of the array receiving module.
10. A lidar, characterized by: comprising a lidar body and the area array lidar optical path system of any of claims 1 to 9 disposed within the lidar body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020781225.6U CN212321831U (en) | 2020-05-12 | 2020-05-12 | Planar array type laser radar light path system and laser radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020781225.6U CN212321831U (en) | 2020-05-12 | 2020-05-12 | Planar array type laser radar light path system and laser radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212321831U true CN212321831U (en) | 2021-01-08 |
Family
ID=74023877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020781225.6U Active CN212321831U (en) | 2020-05-12 | 2020-05-12 | Planar array type laser radar light path system and laser radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212321831U (en) |
-
2020
- 2020-05-12 CN CN202020781225.6U patent/CN212321831U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215932142U (en) | Laser radar | |
| US20210349187A1 (en) | Prism and multi-beam lidar system | |
| CN108549085B (en) | Transmitting lens, area array laser radar and mobile platform | |
| CN214795207U (en) | Solid state lidar | |
| CN108594206A (en) | Light delivery module, laser emitting module, laser radar system and vehicle | |
| WO2022227733A1 (en) | Optical detection device, driving vehicle, laser radar and detection method | |
| US20230035528A1 (en) | Lidar and automated driving device | |
| CN211653130U (en) | Laser emission array, scanning device, laser radar, intelligent vehicle and unmanned aerial vehicle | |
| CN110118961B (en) | Light emitting module and laser radar | |
| CN113589256A (en) | Unmanned laser radar for split-view-field multi-surface rotating mirror | |
| CN212321831U (en) | Planar array type laser radar light path system and laser radar | |
| CN108809408B (en) | Optical transmission assembly and device with reflector for realizing backlight monitoring function | |
| WO2022042078A1 (en) | Laser light source, light emission unit, and lidar | |
| CN210376672U (en) | Multi-line laser radar | |
| CN111596280A (en) | Planar array type laser radar light path system and laser radar | |
| CN111413687A (en) | Laser radar optical system and laser radar | |
| CN112098975B (en) | Line scanning light source generating device for SPAD scheme | |
| EP4321903A1 (en) | Solid-state laser radar and method for detecting by using same | |
| CN111562559B (en) | Laser radar device and receiving module thereof | |
| CN115808693A (en) | Laser radar | |
| CN220154640U (en) | Light emitting module for laser radar and laser radar | |
| CN220913347U (en) | Light emitting device for laser radar and laser radar | |
| CN116400325B (en) | Light emitting assembly and laser radar | |
| CN220399650U (en) | Lidar system and vehicle | |
| CN212379567U (en) | Laser radar optical system and laser radar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231007 Address after: Room C285, 3rd Floor, Building 1, No. 1887 Chenqiao Road, Fengxian District, Shanghai, 201400 Patentee after: Shanghai Shaoyu Technology Co.,Ltd. Address before: Room 2112-1, 21 / F, building F2, luguyuyuan, 27 Wenxuan Road, Changsha high tech Development Zone, Changsha City, Hunan Province, 410013 Patentee before: Hunan Raman Technology Co.,Ltd. |