CN207096437U - A kind of small size multi-line laser radar optical system realizes structure - Google Patents
A kind of small size multi-line laser radar optical system realizes structure Download PDFInfo
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- CN207096437U CN207096437U CN201621314678.8U CN201621314678U CN207096437U CN 207096437 U CN207096437 U CN 207096437U CN 201621314678 U CN201621314678 U CN 201621314678U CN 207096437 U CN207096437 U CN 207096437U
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- emission system
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- laser radar
- scanning
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- 230000003287 optical effect Effects 0.000 title claims abstract description 11
- 230000000007 visual effect Effects 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 238000007747 plating Methods 0.000 claims abstract description 3
- 238000005259 measurement Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 210000004209 hair Anatomy 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
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Abstract
The utility model provides a kind of small size multi-line laser radar optical system and realizes structure, including：Emission system, reception system, scanning system.Reception system is made up of lens and linear array APD, and emission system is made up of LASER Light Source and collimation lens, and its number is less than APD pixel number.Scanning system is the speculum for the two-sided plating reflectance coating that can be rotated, and for changing the path of transmitting light beam, realizes the scanning of laser.The laser facula of each group of sub- emission system transmitting can cover the visual field of the multiple pixels of reception system, when the sub- emission system of one of which is luminous for the first time, a part for its hot spot is received by first pixel, when the sub- emission system is luminous for the second time, another part of its hot spot is received by second pixel, by that analogy, realize that one group of sub- emission system matches multiple reception pixels, reduce the number of emission system, so as to reduce volume, realize the miniaturization of multi-line laser radar.
Description
Technical field
Laser radar field is the utility model is related to, more particularly to a kind of small size multi-line laser radar optical system is realized
Structure.
Background technology
At present, application of the laser radar in unmanned, road streetscape mapping is more and more extensive, but due to this species
Laser radar needs to be integrated into other equipment or instrument, therefore the miniaturization of laser optical radar, is just particularly important.
At present, multi-line laser radar product on the market is roughly divided into two ways：The first：Emission system and reception are
System integral-rotation, such a mode load weight is very big, very high to motor and follow-up dynamic balancing commissioning requirements, and ray machine adjustment
Complex process, therefore generally most of multi-line laser radar all uses second of form：Emission system and reception system are fixed, and are led to
Scanning is realized in the rotation for crossing speculum.But such a mode is commonly available to the less laser radar system of number of scanning lines, and for
For the more laser radar of line number then because emission system number is more, equipment size is larger, can not minimize.
The content of the invention
For above-mentioned problem, the utility model provides a kind of small size multi-line laser radar optical system and realized
Structure, the scanning of multi-line laser radar is realized by reducing emission system number.
The utility model provides a kind of small size multi-line laser radar optical system and realizes structure, including：Emission system,
Reception system, scanning system, the structure of the multichannel visual field of reception system is covered by the hot spot of the sub- emission system of single channel, and is reduced
Emission system number, realize small size multi-line laser radar.
Emission system includes LASER Light Source, collimation lens, lens barrel, for launching multichannel to object and often all the way can
Cover the laser of multipath reception system visual field.
Reception system includes receiving lens, receives lens barrel, array APD, for receiving the laser being reflected back by object
Energy.
Emission system includes an at least way emission system.
The array APD of reception system includes at least two pixels.
The scanning system is the speculum for the two-sided plating reflectance coating that can be rotated, for changing the path of transmitting light beam,
Realize the scanning of laser.
The utility model is using reducing emission system number, and emission system is repeatedly launched the mode of laser and connect to match
That receives APD realizes structure, in the case where realizing same number of scanning lines, the volume of laser radar is reduced, for laser radar
It is integrated significant with other equipment or instrument.
Brief description of the drawings
Fig. 1 small size multi-line laser radar optical systems realize the operation principle schematic diagram of structure.
Fig. 2 small size multi-line laser radar optical systems realize specific device and light the propagation path schematic diagram of structure.
Embodiment
The scanning for realizing four line laser radars using two emission systems below illustrates as embodiment.Structure is realized at this
In have two groups of sub- emission systems, including two light sources, two groups of collimating and correcting lens；One group of reception system；One linear array APD, should
Linear array APD includes four pixels.Have in the front end of emission system and reception system it is a piece of being capable of rotating mirror.
Fig. 1 shows the operation principle schematic diagram of one embodiment of the present utility model.For emission system, from laser light
The light that source is sent forms the hot spot that can cover two pixel visual field sizes of linear array APD after collimation lens.First group of son
Emission system sends light beam, and a part for its hot spot returns to speculum by distant target diffusing reflection, saturating into receiving
Mirror and first pixel for converging to linear array APD, form first point distance measurement.First group of son after one very short time is spaced
Emission system launches the second beam light, and another part of emergent light spot returns to receiving lens behind same path and enters line
Battle array APD second pixel, forms second point distance measurement.Similarly, third and fourth of second group of sub- emission system and linear array APD
Pixel forms the 3rd and the 4th point distance measurement.Speculum continuously rotates, and realizes the four lines scanning of laser radar.
Fig. 2 shows the specific schematic diagram of one embodiment of the present utility model.There are two groups of son hairs in this realizes structure
Penetrate system, including two light sources 201 and 202, two groups of collimating and correcting lens 203 and 204, speculum 205, one group of receiving lens
206, a linear array APD, the linear array APD includes four pixels 207,208,209 and 210.Light is sent out from light source 201 (or 202)
Go out, incide speculum 205 after collimating and correcting lens 203 (204) collimating and correcting, after distant target diffusing reflection again
By speculum 205, and enter receiving lens 206, final goal flare is partly into the first pixel 207, is formed
One point distance measurement.The launch spot again of light source 201, passes through the another of same mode target reflecting light spot after certain interval of time
The second pixel 208 is partly into, forms second point distance measurement.Similarly, the pixel 209 of light source 202 and the 3rd and the 4th pixel 210
Form the 3rd and the 4th point distance measurement.The four lines scanning of laser radar is realized when speculum rotates.
The utility model includes but is not limited to the linear array APD that two sub- emission systems match four pixels, for other examples
As a sub- emission system matches the linear array APD of two pixels, a sub- emission system matches the linear array of four pixels
Two sub- emission systems match the linear array APD of eight pixels, two sub- emission systems match 16 pixels three
Situations such as sub- emission system matches the linear array APD of six pixels, three sub- emission systems match the linear array APD of 12 pixels is same
Sample is applicable.
Claims (2)
1. a kind of small size multi-line laser radar optical system realizes structure, it is characterised in that including：Emission system, receive system
System, scanning system, the structure of the multichannel visual field of reception system is covered by the hot spot of the sub- emission system of single channel, realizes that small size is more
Line laser radar；
The emission system position and the reception system are left-right situs；The scanning system is located at emission system and reception system
Front；
The emission system includes：LASER Light Source, collimation lens, lens barrel, and LASER Light Source, collimation lens, lens barrel respectively from
Upper and lower arrangement, emission system are used to launch multichannel and per can cover swashing for multipath reception system visual field all the way to object
Light；
The reception system includes：Receiving lens, lens barrel, array APD are received, for receiving the laser being reflected back by object
Energy；
The scanning system is the speculum for the two-sided plating reflectance coating that can be rotated, and for changing the path of transmitting light beam, is realized
The scanning of laser.
2. small size multi-line laser radar optical system as claimed in claim 1 realizes structure, it is characterised in that the reception
The array APD of system includes at least two pixels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621314678.8U CN207096437U (en) | 2016-12-01 | 2016-12-01 | A kind of small size multi-line laser radar optical system realizes structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621314678.8U CN207096437U (en) | 2016-12-01 | 2016-12-01 | A kind of small size multi-line laser radar optical system realizes structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207096437U true CN207096437U (en) | 2018-03-13 |
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| CN201621314678.8U Active CN207096437U (en) | 2016-12-01 | 2016-12-01 | A kind of small size multi-line laser radar optical system realizes structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239749A (en) * | 2020-02-04 | 2020-06-05 | 成都英飞睿技术有限公司 | Novel high-line-number MEMS laser radar system |
| WO2021159883A1 (en) * | 2020-02-14 | 2021-08-19 | 深圳奥锐达科技有限公司 | Off-axis scanning distance measuring system |
-
2016
- 2016-12-01 CN CN201621314678.8U patent/CN207096437U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111239749A (en) * | 2020-02-04 | 2020-06-05 | 成都英飞睿技术有限公司 | Novel high-line-number MEMS laser radar system |
| WO2021159883A1 (en) * | 2020-02-14 | 2021-08-19 | 深圳奥锐达科技有限公司 | Off-axis scanning distance measuring system |
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Effective date of registration: 20231207 Address after: 430200, 7th floor, Building 3, Phase II, Modern Service Industry Demonstration Base, Huazhong University of Science and Technology Science Park, Guandong Street, Wuhan Donghu New Technology Development Zone, Wuhan City, Hubei Province Patentee after: Wuhan Wanji Photoelectric Technology Co.,Ltd. Address before: 100085 No. 5, building 1, East Road, Haidian District, Beijing, 601 Patentee before: BEIJING WANJI TECHNOLOGY Co.,Ltd. |