CN203535219U - Coaxial laser delay and attenuation simulation device - Google Patents
Coaxial laser delay and attenuation simulation device Download PDFInfo
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- CN203535219U CN203535219U CN201320623546.3U CN201320623546U CN203535219U CN 203535219 U CN203535219 U CN 203535219U CN 201320623546 U CN201320623546 U CN 201320623546U CN 203535219 U CN203535219 U CN 203535219U
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- optical fiber
- attenuator
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- camera lens
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- 238000004088 simulation Methods 0.000 title abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 15
- 238000010168 coupling process Methods 0.000 claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 claims abstract description 13
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 239000013307 optical fiber Substances 0.000 claims description 28
- 230000002457 bidirectional effect Effects 0.000 claims description 5
- 230000008054 signal transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000011002 quantification Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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Abstract
The patent discloses a coaxial laser delay and attenuation simulation device. The device is composed of an attenuator, a fiber coupling lens, a fiber circulator, an adjustable attenuator, and a laser signal delay fiber. The device can be used for indoor simulation of outdoor range finding performance of a coaxial laser radar and for quantitative detection. The structure of the device is easy to implement, quantification is accurate, and simulation is large in dynamic range.
Description
Technical field:
This patent relates to a kind of laser and postpones and attenuating device, is specifically related to a kind of coaxial laser delay and decay analogue means, and it is for the quantitative detection of Ranging Performance of Laser Scanner.
Background technology:
The operating distance of laser radar extends to tens kilometers from several meters at present, kilometers even up to a hundred, directly adopt actual distance to test, need place larger, conventionally can only arrive the place that field is comparatively spacious and test, if can design a kind of analogue means of laser ranging performance, can be in the outdoor performance test of carrying out true range finding of lab simulation, can greatly reduce the demand to place, reduce experimentation cost simultaneously.
The laser that transmits and receives of traditional laser radar is two cover camera lenses, and its range performance simulation only need to adopt optical fiber to receive the laser that laser radar sends, and after recycling optical fiber delay, is transmitted into and receives camera lens.The Laser emission of coaxial laser radar system and reception adopt same set of camera lens, need to design coaxial analogue means.
This patent has designed a kind of coaxial laser delay and decay analogue means, can be used for the quantitative detection of coaxial laser radar range performance.
Summary of the invention:
The object of this patent is that a kind of coaxial laser of design postpones and decay analogue means, is used in the outdoor range performance of lab simulation coaxial laser radar, and can quantitatively detects.
The technical scheme of this patent is as follows:
According to a kind of coaxial laser of this patent, postpone and decay analogue means, comprise that attenuator 1, coupling fiber camera lens 2, optical fiber circulator 3, adjustable attenuator 4, laser signal postpone optical fiber 5.The laser signal that coaxial laser radar sends incides coupling fiber camera lens 2 after decaying by attenuator 1, camera lens is coupled to laser signal 1 bidirectional port of optical fiber circulator 3,3 ports through optical fiber circulator 3 enter adjustable attenuator 4, attenuation ratio as requested postpones optical fiber 5 by laser signal transmission to laser signal after adjusting attenuator, laser signal transmission after optical fiber delay is to 2 ports of optical fiber circulator 3, then after entering 1 bidirectional port of optical fiber circulator 3, by coupling fiber camera lens 2, be transmitted into attenuator 1, then send after attenuator 1.
The advantage of this patent is: realize simply, quantitatively accurate, simulation dynamic range is large.
Accompanying drawing explanation:
Fig. 1 is the schematic diagram of this patent, in figure: 1-attenuator, 2-coupling fiber camera lens, 3-optical fiber circulator, 4-adjustable attenuator, 5-laser signal postpones optical fiber.
Embodiment:
According to Fig. 1, provide better embodiment of this patent below, to further provide the ins and outs of this patent, enable to illustrate better architectural feature and the functional characteristics of this patent, but be not for limiting the scope of this patent.
Consult Fig. 1, coaxial laser radar range finding imaging system for 100 meters of operating distances, as follows by the programmable range performance simulator of this patent workflow: selecting attenuator 1 attenuation ratio is 60%, become 30 degree angles to place with incident laser, coaxial laser radar sends laser pulse signal, by the rear outgoing energy of attenuator 1, be projectile energy 60%, coupling fiber camera lens 2 is set for lens, bore is 10mm, focal length is 17mm, the core diameter of coupled fiber is 0.6mm, Optical Fiber Numerical Aperture NA is 0.37, the design of coupling fiber camera lens 2 guarantees that laser beam energy efficient coupling is in optical fiber, make return laser light have the enough large angle of divergence simultaneously, coupled into optical fibres loop after coupling fiber camera lens 2, in optical fiber loop, first the bidirectional port 1 through optical fiber circulator 3 is inputted, then through the port 3 of circulator, export, after adjustable attenuator 4, enter laser signal and postpone optical fiber 5, postponing optical fiber 5 is the optical fiber of 200 meters of length, laser signal after postponing is again by optical fiber circulator 3, coupling fiber camera lens 2 and the rear transmitting of attenuator 1.Because the loss of each several part in device can quantitatively calibrating, therefore by the echo laser that returns after this device and the energy relationship of Emission Lasers, can measure by accurate quantification, thereby can carry out quantification simulation to the distance measuring signal of laser radar.
Claims (1)
1. coaxial laser postpones and a decay analogue means, comprises that attenuator (1), coupling fiber camera lens (2), optical fiber circulator (3), adjustable attenuator (4), laser signal postpone optical fiber (5), is characterized in that:
The laser signal that coaxial laser radar sends incides coupling fiber camera lens (2) after decaying by attenuator (1), camera lens is coupled to laser signal 1 bidirectional port of optical fiber circulator (3), 3 ports through optical fiber circulator (3) enter adjustable attenuator (4), attenuation ratio as requested postpones optical fiber (5) by laser signal transmission to laser signal after adjusting attenuator, laser signal transmission after optical fiber delay is to 2 ports of optical fiber circulator (3), then after entering 1 bidirectional port of optical fiber circulator (3), by coupling fiber camera lens (2), be transmitted into attenuator (1), after attenuator (1), send again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623546.3U CN203535219U (en) | 2013-10-10 | 2013-10-10 | Coaxial laser delay and attenuation simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320623546.3U CN203535219U (en) | 2013-10-10 | 2013-10-10 | Coaxial laser delay and attenuation simulation device |
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| Publication Number | Publication Date |
|---|---|
| CN203535219U true CN203535219U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320623546.3U Expired - Lifetime CN203535219U (en) | 2013-10-10 | 2013-10-10 | Coaxial laser delay and attenuation simulation device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203535219U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499816A (en) * | 2013-10-10 | 2014-01-08 | 中国科学院上海技术物理研究所 | Coaxial laser delay and attenuation simulating device |
| JP2020122655A (en) * | 2019-01-29 | 2020-08-13 | 株式会社ジェイメック | Distance detector inspection device |
-
2013
- 2013-10-10 CN CN201320623546.3U patent/CN203535219U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499816A (en) * | 2013-10-10 | 2014-01-08 | 中国科学院上海技术物理研究所 | Coaxial laser delay and attenuation simulating device |
| JP2020122655A (en) * | 2019-01-29 | 2020-08-13 | 株式会社ジェイメック | Distance detector inspection device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |