CN208902879U - A device for measuring the performance of laser ranging system with high precision - Google Patents
A device for measuring the performance of laser ranging system with high precision Download PDFInfo
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- CN208902879U CN208902879U CN201821336513.XU CN201821336513U CN208902879U CN 208902879 U CN208902879 U CN 208902879U CN 201821336513 U CN201821336513 U CN 201821336513U CN 208902879 U CN208902879 U CN 208902879U
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Abstract
本专利公开了一种高精度测量激光测距系统性能的装置，该方法是利用分色片的分光功能，将带有刻线的分划板与激光光纤端面等距离的固定到分色片两侧，通过光纤将延时回波发生器组件产生的激光经过平行光管发射至被检设备。该装置可以用于激光测距系统中的激光发散角、光斑能量以及激光测距系统测距能力的检测，还可用于标定被检设备激光收发的光轴偏差。该专利适用于各种激光测距系统性能的实时标定，也适用于主被动结合的光电系统收发同轴检测等领域，该系统焦面模块固定、定标方法简单、价格低廉。
This patent discloses a device for measuring the performance of a laser ranging system with high precision. The method uses the light-splitting function of the color-separator to fix a reticle with a scribed line and the end face of the laser fiber to the two sides of the color-separator at an equal distance. On the side, the laser generated by the delay echo generator assembly is emitted to the device under inspection through the collimator through the optical fiber. The device can be used for the detection of the laser divergence angle, the spot energy and the ranging capability of the laser ranging system in the laser ranging system, and can also be used for calibrating the optical axis deviation of the laser transceiver of the detected equipment. This patent is applicable to the real-time calibration of the performance of various laser ranging systems, and also to the fields of transceiver coaxial detection of photoelectric systems combined with active and passive combination. The system has a fixed focal plane module, simple calibration method and low price.
Description
Technical field
This patent belongs to technical field of optical detection more particularly to a kind of dress of high-acruracy survey laser ranging system performance
It sets, the Patent equipment structure is simple, portable strong.Test software is simple, convenient, quick, especially suitable for by aiming at
The testing requirement for the laser ranging system that device and laser emitting module, laser pick-off module form, various laser masters passively tie
The electro-optical system of conjunction is received and dispatched with fields such as shaft detections.
Background technique
Laser ranging system has become the important component of all arms, ground force observation and aiming device now；Such as armoured unit
Main battle tank, mechanized infantry combat vehicle various gun commander surely as gun sight, vehicle commander's panoramic sight, survey and take aim at guidance instrument etc., laser
Range-measurement system allows to realize quick, accurate, the convenient and fast sophisticated equipment of one kind of search observation, object ranging, azimuthal measurement；
Due to being the technologies such as light harvesting, electricity, sensor in integrated, structure is complicated, failure rate is higher.Especially current high intensity actual combatization is instructed
In white silk, laser ranging system once breaks down, it will influences the purpose of operation of commander.Due to cannot unitized solution step
The Measuring error problem of island portion team laser ranging system is kept in soldier, artilleryman, armored force and coast defence, causes detection to maintain device model numerous
It is more, have a single function, funds resource is more, ensure low efficiency the problem of be difficult to solve for a long time.To solve these problems, pass through integrated side
All indexs of method unified measurement will be increasingly required.For laser ranging system detection technique and means status, there is an urgent need to
Research can swash in the general all arms, ground force that meets of field and indoor universal, individual soldier and vehicle-mounted general, army's grade and Base Level
A kind of generalization performance detection technology and means of ligh-ranging system；It can be built for army material support power and certain branch is provided
Support.For laser optical apparatus, optical axis registration is one of key technical index of instrument, and the variation of optical axis will directly affect
Detection to system is horizontal, and with the raising of the expansion of various optical instrument application ranges and application demand, to optical instrument
Stability, the requirement of optical axis registration accuracy it is also higher and higher, also the ground calibration of optical instrument and performance test are proposed
Higher requirement.The detectivity index of laser remote sensing system mainly include system range accuracy, investigative range (maximum ranging distance,
Minimum ranging), resolution of ranging and detection probability (false alarm rate, false dismissed rate).And the variation of optical axis registration will directly influence
The detectivity of system this requires that can have the instrument of standard or equipment that can test it, and calibrates variation feelings in time
Condition.
Summary of the invention
The purpose of this patent is to provide a kind of device of high-acruracy survey laser ranging system performance.The patent utilizes color separation
The light splitting function of piece, the graticle with groove is equidistant fixed to color separation film two sides with laser fiber end-face, pass through light
The fibre laser that echo gecerator component generates that will be delayed emits to tested equipment by parallel light tube, while in focal surface of collimator tube
The beacon light source of optical fiber output is placed as instruction light.The system can be used for laser beam divergence, light in laser ranging system
The detection of spot energy and laser ranging system range capability, it may also be used for demarcate the optical axis deviation of tested equipment laser transmitting-receiving.
The patent is suitable for the real-time calibration of various laser ranging system performances, and it is same to be also applied for the main electro-optical system transmitting-receiving passively combined
The fields such as shaft detection, system focal plane module is fixed, calibrating method is simple, cheap for this.
The detection device of this patent method is as shown in Fig. 1: the Patent equipment should be controllable by parallel light tube 2, laser energy
Attenuating device 3 processed, delay echo gecerator component 4, attenuating device 5, lighting device 6, the graticle 7 with groove, detection phase
Machine 8,9 corner reflector 10 of color separation film composition.Wherein be delayed echo gecerator component 4 in the output optical fiber end face and with groove
Graticle 7 is respectively placed in the equidistant of 9 two sides of color separation film, is then put into together near the focal plane of parallel light tube 2.First will
The laser emitting module 1-2 of measured laser range-measurement system 1 issues laser, and laser is converged at by parallel light tube 2 with groove
On graticle 7, the crosshair that lighting device 6 illuminates the graticle 7 with groove is opened, detection camera 8 is recycled to observe graduation
Laser light spot intensity on plate is realized being continuously adjusted laser energy attenuation in proper strength for energy using attenuating device 5, led to
Cross laser facula size on the graticle 7 with groove, ratio, that is, measured laser of laser facula size and 2 focal length of parallel light tube
1 laser beam divergence of range-measurement system；Using the acquisition of delay echo gecerator component 4 with scattering laser arteries and veins on the graticle 7 of groove
Signal is rushed, emitting through delay 4 the output optical fiber end face of echo gecerator component for delay echo is generated by pulse signal, by flat
The collimation output of row light pipe 2, judges to receive by the way that whether the laser pick-off module 1-3 of measured laser range-measurement system 1 detects signal
Whether hair coaxially keeps good, while can control attenuating device 3 by laser energy to realize the continuously adjustable of energy
And then output signal size is controlled, to simulate measured laser range-measurement system 1 to the range capability of different distance.
The self-test when corner reflector 10 is placed in measured laser range-measurement system position for measuring device.
For the parallel light tube 2 using the reflective parallel light pipe of common process, aperture of mirror of looking in the distance is 350mm, telescope
Focal length is 2m, and paraboloid surface type requires RMS to be better than 1/20 λ@632.8nm.
The delay echo gecerator component 4 is by high speed detector 4-1, delayed echo generator 4-2 and controllable light
Fine output laser 4-3 composition；Wherein high speed detector 4-1 is wide using respective wavelength range；Delayed echo generator 4-2 can be with
Beam shaping and delay pulse time are carried out, the outgoing of optical fiber output laser 4-3 and measured laser range-measurement system 1 can control to swash
The wavelength of light, pulse match.
The lighting source spectral region of the lighting device 6 needs the detection wavelength of part covering detection camera 8.
The rotating accuracy of the corner reflector 10 is less than 3 ".
Steps are as follows for laser ranging system performance measurement method specific method:
1 places a standard parallel light source, wavelength and the measured laser wavelength phase of source of parallel light first before parallel light tube 2
Together, then the graticle 7 with groove is fixed near the focal plane of parallel light tube 2, has groove using the detection observation of camera 8
Graticle 7 on imaging facula size, the position of graticle 7 of the adjustment with groove makes hot spot minimum, fixed to have groove
Graticle 7.
2 are added color separation film 9 before the graticle 7 with groove, and incident light is classified into two beams, and transmission channels are having groove
It is imaged on differentiation plate 7, reflection channel will generate another focus, in the near focal point constant time lag echo gecerator component 4
Middle light lead optical fiber, the output optical fibre using delay echo gecerator component 4 emit laser, optical maser wavelength and measured laser wavelength phase
Together, before corner reflector 10 being placed in parallel light tube 2, then before the light-coming out optical fiber end face of adjustment delay echo gecerator component 4
Position afterwards is adjusted to no matter corner reflector 10 is placed on any position of transmissive parallel light pipe, with the light at groove graticle
Until spot is motionless, the output optical fibre of constant time lag echo gecerator component 4.
3 keep it minimum in the parallel light tube imaging facula of the standard in the hot spot that delay echo gecerator component 4 issues, together
When be overlapped with the laser facula that delay echo gecerator component 4 issues with the crosshair with groove differentiation plate 7, it is finally fixed to prolong
When echo gecerator component 4 fiber end face.
Before the detection system being completed is placed into system under test (SUT) 1 by 4, orientation, the pitch angle of sighting device 1-1 are adjusted
To be directed at the crosshair with groove differentiation plate 7, the graticle 7 with groove illuminated using lighting device 6, the tested system of unlatching
System 1 in range laser, with detection camera 8 measure hot spot with groove 7 crosshair of graticle relative position, hot spot and
The position difference of crosshair represents the emission system in the sighting device 1-1 and laser ranging module 1-2 of system under test (SUT)
Optical axis deviation；
After 5 illuminated with laser light are with the graticle 7 of groove, partial dispersion pulsed light is detected by high speed detector 4-1, with this
Signal is initial pulse, and control laser issues identical pulse light after generating delayed echo, observes the reception response of system under test (SUT)
To judge to receive and dispatch whether optical axis is registrated.
6 by laser energy can control attenuating device 3 to simulate the laser energy of different location and observe system under test (SUT)
Responding ability.
By testing above, can obtain sighting device 1-1 in measured laser range-measurement system 1, laser emitting module 1-2,
Optical axis matching between laser pick-off module 1-3；Simultaneously can detecte laser emitting module 1-2 laser beam quality and
The ranging range etc. of laser pick-off module 1-3.
The characteristics of patent, is mainly reflected in:
1) self checking method of the patent is simple, can satisfy indoor, vehicle-mounted use.
2) the focal plane module making method of the patent is easy to operate, easy to learn, and cooperation computer software is easy to operate.
Detailed description of the invention
Fig. 1 is the schematic diagram of the patent.
Fig. 2 is the workflow schematic diagram of the patent.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to this patent method.
Main devices employed in this patent are described as follows:
1) parallel light tube 2: using the off-axis reflection parallel light tube of common process, aperture of mirror of looking in the distance is 350mm, telescope
Focal length is 2m, and paraboloid surface type requires RMS to be better than 1/20 λ@632.8nm.
2) laser energy can control attenuating device 3: use Thorlabs company model for NDC-25C-4, extinction efficiency is from 0
~(- 40) db, bore Φ 25mm
3) be delayed echo gecerator component 4: the equipment is home-built equipment, is mainly sent out by high speed detector 4-1, delayed echo
Raw device 4-2 and controllable optical fiber output laser 4-3 composition, after high speed detector 4-1 detects pulse signal, using postponing back
Wave producer 4-2 generates certain time and postpones analog echo signal, so that the laser for triggering optical fiber output laser 4-3 goes out
Light, to generate the laser signal thus the echo that is delayed；
4) attenuating device 5: using Thorlabs company model for NDC-50C-4, and extinction efficiency is from 0~-40dB, total light passing
Bore is Φ 50mm；
5) lighting device 6: using the broad spectrum light source of prosperous four standing grain photoelectricity company, Shenzhen, power 2W, for illuminating band
There is the crosshair of the graticle of groove.
6) graticle 7 of groove is had: using Chengdu credit spectroscopic optics Products Co., Ltd, customization differentiation plate.
7) it detects camera 8: using U.S.'s Spiricon company model for the laser beam analyzer of SP620, main performance ginseng
Number: service band 190nm-1100nm, pixel size 4.4um*4.4um, number of pixels 1600*1200；
8) color separation film 9: use Thorlabs company model for FGL1000 color separation film, Specifeca tion speeification: using 1064
Semi-transparent semi-reflecting, clear aperature 25mm, face type is better than the@of λ/10 632.8nm.
9) corner reflector 10: use Thorlabs company model for the prism of corner cube of PS971, Specifeca tion speeification: thoroughly
Smooth surface surface face type is better than the@of λ/10 632.8nm；Rotating accuracy is less than 3 ", clear aperture 25.4mm, transparency range 400-
1100。
In specific embodiment, the schematic diagram of patent device is as shown in Figure 1, specific step is as follows
1 places a standard parallel light source, wavelength and the measured laser wavelength phase of source of parallel light first before parallel light tube 2
Together, then the graticle 7 with groove is fixed near the focal plane of parallel light tube 2, has groove using the detection observation of camera 8
Graticle 7 on imaging facula size, the position of graticle 7 of the adjustment with groove makes hot spot minimum, fixed to have groove
Graticle 7.
2 are added color separation film 9 before the graticle 7 with groove, and incident light is classified into two beams, and transmission channels are having groove
It is imaged on differentiation plate 7, reflection channel will generate another focus, in the near focal point constant time lag echo gecerator component 4
Middle light lead optical fiber, the output optical fibre using delay echo gecerator component 4 emit laser, optical maser wavelength and measured laser wavelength phase
Together, before corner reflector 10 being placed in parallel light tube 2, then before the light-coming out optical fiber end face of adjustment delay echo gecerator component 4
Position afterwards is adjusted to no matter corner reflector 10 is placed on any position of transmissive parallel light pipe, with the light at groove graticle
Until spot is motionless, the output optical fibre of constant time lag echo gecerator component 4.
3 keep it minimum in the parallel light tube imaging facula of the standard in the hot spot that delay echo gecerator component 4 issues, together
When be overlapped with the laser facula that delay echo gecerator component 4 issues with the crosshair with groove differentiation plate 7, it is finally fixed to prolong
When echo gecerator component 4 fiber end face.
Before the detection system being completed is placed into system under test (SUT) 1 by 4, orientation, the pitch angle of sighting device 1-1 are adjusted
To be directed at the crosshair with groove differentiation plate 7, the graticle 7 with groove illuminated using lighting device 6, the tested system of unlatching
System 1 in range laser, with detection camera 8 measure hot spot with groove 7 crosshair of graticle relative position, hot spot and
The position difference of crosshair represents the emission system in the sighting device 1-1 and laser ranging module 1-2 of system under test (SUT)
Optical axis deviation；
After 5 illuminated with laser light are with the graticle 7 of groove, partial dispersion pulsed light is detected by high speed detector 4-1, with this
Signal is initial pulse, and control laser issues identical pulse light, the reception response of observation system under test (SUT) 1 after generating delayed echo
To judge to receive and dispatch whether optical axis is registrated.
6 by laser energy can control attenuating device 3 to simulate the laser energy of different location and observe system under test (SUT) 1
Responding ability.
By testing above, can obtain sighting device 1-1 in measured laser range-measurement system 1, laser emitting module 1-2,
Optical axis matching between laser pick-off module 1-3；Simultaneously can detecte laser emitting module 1-2 laser beam quality and
The ranging range etc. of laser pick-off module 1-3.
Claims (5)
1. a kind of device of high-acruracy survey laser ranging system performance, including the controllable decaying of parallel light tube (2), laser energy
Device (3), attenuating device (5), lighting device (6), the graticle (7) with groove, is visited delay echo gecerator component (4)
Survey camera (8), color separation film (9) and corner reflector (10), it is characterised in that:
The output optical fiber end face being delayed in echo gecerator component (4) and graticle (7) with groove are respectively placed in point
The equidistant of color chips (9) two sides, is then put into together near the focal plane of parallel light tube (2)；First by measured laser ranging system
The laser emitting module (1-2) of system (1), which is opened, issues laser, and laser converges at the graduation with groove by parallel light tube (2)
On plate (7), the crosshair that lighting device (6) illuminate the graticle (7) with groove is opened, attenuating device (5) Lai Shixian is utilized
Being continuously adjusted laser energy attenuation in proper strength for energy, recycles laser facula on detection camera (8) observation graticle
Intensity passes through laser facula size on the graticle (7) with groove, the ratio of laser facula size and parallel light tube (2) focal length
Value is measured laser range-measurement system (1) laser beam divergence；The graduation of groove is had using delay echo gecerator component (4) acquisition
Laser emitting module scattering laser pulse signal on plate (7) generates sending out through delay echo for delay echo by pulse signal
Raw device assembly (4) the output optical fiber end face transmitting, collimates by parallel light tube (2) and exports, and passes through swashing for measured laser range-measurement system
Whether optical receiver module (1-3) detects signal to judge whether transmitting-receiving coaxially keeps good, while can pass through laser energy
The continuously adjustable and then control output signal size of controllable attenuating device (3) Lai Shixian energy, to simulate measured laser survey
Away from system (1) to the range capability of different distance；
The self-test when corner reflector (10) is placed in measured laser range-measurement system position for measuring device.
2. a kind of device of high-acruracy survey laser ranging system performance according to claim 1, it is characterised in that: described
Parallel light tube (2) use common process reflective parallel light pipe, aperture of mirror of looking in the distance be 350mm, telescope focal length be 2m, throw
Object plane face type requires RMS to be better than 1/20 λ@632.8nm.
3. a kind of device of high-acruracy survey laser ranging system performance according to claim 1, it is characterised in that: described
Delay echo gecerator component (4) by high speed detector (4-1), delayed echo generator (4-2) and controllable optical fiber output
Laser (4-3) composition；Wherein high speed detector (4-1) is wide using respective wavelength range；Delayed echo generator (4-2) can be with
Beam shaping and delay pulse time are carried out, can control going out for optical fiber output laser (4-3) and measured laser range-measurement system (1)
Penetrate the wavelength of laser, pulse matches.
4. a kind of device of high-acruracy survey laser ranging system performance according to claim 1, it is characterised in that: described
Lighting device (6) lighting source spectral region need part covering detection camera (8) detection wavelength.
5. a kind of device of high-acruracy survey laser ranging system performance according to claim 1, it is characterised in that: described
Corner reflector (10) rotating accuracy less than 3 ".
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821336513.XU CN208902879U (en) | 2018-08-20 | 2018-08-20 | A device for measuring the performance of laser ranging system with high precision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821336513.XU CN208902879U (en) | 2018-08-20 | 2018-08-20 | A device for measuring the performance of laser ranging system with high precision |
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| CN208902879U true CN208902879U (en) | 2019-05-24 |
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| CN201821336513.XU Withdrawn - After Issue CN208902879U (en) | 2018-08-20 | 2018-08-20 | A device for measuring the performance of laser ranging system with high precision |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931783A (en) * | 2018-08-20 | 2018-12-04 | 中国科学院上海技术物理研究所 | A kind of device and method of high-acruracy survey laser ranging system performance |
-
2018
- 2018-08-20 CN CN201821336513.XU patent/CN208902879U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108931783A (en) * | 2018-08-20 | 2018-12-04 | 中国科学院上海技术物理研究所 | A kind of device and method of high-acruracy survey laser ranging system performance |
| CN108931783B (en) * | 2018-08-20 | 2023-09-12 | 中国科学院上海技术物理研究所 | A device and method for measuring the performance of a laser ranging system with high precision |
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