CN101975953A - Hand-held round-the-clock laser imaging distance measurer - Google Patents
Hand-held round-the-clock laser imaging distance measurer Download PDFInfo
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- CN101975953A CN101975953A CN2010102934332A CN201010293433A CN101975953A CN 101975953 A CN101975953 A CN 101975953A CN 2010102934332 A CN2010102934332 A CN 2010102934332A CN 201010293433 A CN201010293433 A CN 201010293433A CN 101975953 A CN101975953 A CN 101975953A
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Abstract
The invention discloses a hand-held round-the-clock laser imaging distance measurer, which consists of a laser emission subsystem, a laser receiving subsystem and an information processing and display subsystem, wherein position connection relationships among the laser emission subsystem, the laser receiving subsystem and the information processing and display subsystem are that: the laser emission subsystem and the laser receiving subsystem are positioned at the front end of a system, while the information processing and display subsystem is positioned at the rear end of the system; the laser emission subsystem consists of an illumination laser light source, a distance measurement laser light source, a beam splitter and an emission lens; the laser receiving subsystem consists of a receiving lens, the beam splitter, a charge coupled device (CCD) and an avalanche photo diode (APD) receiver; and the information processing and display subsystem consists of a digital signal processor (DSP)-based information processing unit and a liquid crystal display (LCD). The hand-held round-the-clock laser imaging distance measurer takes laser as the illumination light source, is not limited by an external environment, can perform round-the-clock distance measurement on a target, integrates the two sets of subsystems for laser imaging and laser distance measurement to realize common-aperture emission and reception, is scientific in conception and novel in structure and has vast application prospect in the technical field of laser imaging and distance measurement.
Description
(1) technical field
The present invention relates to a kind of light, mechanical, electrical, calculate incorporate laser imaging system and laser distance measuring system, particularly relate to a kind of hand-held laser imaging stadimeter round the clock, it is integrated laser imaging and laser ranging function.Belong to laser imaging and laser ranging technique field.
(2) background technology
Laser range finder is owing to have non-cpntact measurement, far measuring distance, and it is fast and simple to find range, distance accuracy advantages of higher and being widely adopted.Wherein,, realize being widely adopted easily because simple in structure based on the laser range finder of burst length flight method range finding.It sends laser pulses irradiate to target surface to be measured by pulsed laser, and target surface to be measured is received by the laser signal of target reflection the laser of reflected illumination on it by detector.The launch time of the control circuit recording laser pulse of laser range finder and the time of return of laser pulse calculate and send pulse and received pulse mistiming between the two, multiply by the distance value that comes and goes that the light velocity can obtain laser pulse again.
Laser range finder commonly used mainly is to find range by day.It combines with telescope, and human eye is seen by telescopical eyepiece and taken aim at measured target.Because traditional laser range finder can only just can use when ambient light illumination is fit to human eye observation.And locate in the shade dark when target to be measured, perhaps when night, then human eye is difficult to search out the accurate position of measured target, even can't see target, therefore can't use the common laser stadimeter to implement effectively measurement in this case.And still need need find find range again behind the object based on the stadimeter of infrared imaging by the faint light around the target according to finding that target finds range again by the heat radiation of object self based on the stadimeter of low-light level imaging.The two all is an imaging and passive imaging equipment, and their imaging effect is subjected to the restriction of the infrared signature of surrounding environment illumination situation or target and background.If ambient lighting is extremely weak or object does not have obvious heat radiation, the conventional laser stadimeter will lose the ability of night vision, can't seek target and find range.
The hand-held laser imaging stadimeter round the clock of the present invention integrates laser imaging and laser ranging, and human eye can't observed object and cause the problem that can't find range when dark well to have overcome independent use laser range finder.It need not to rely on the heat radiation of ambient lighting and object itself with laser floodlighting target, can the round-the-clock imaging, therefore can realize finding range round the clock.Simultaneously, laser imaging and laser ranging two cover subsystem aperture emissions altogether, the aperture receives altogether, has dwindled equipment volume and weight.In conjunction with imaging round the clock of this complete equipment and range finding, volume is little, lightweight advantage, and it can be widely used in fields such as security protection, monitoring and measurement
(3) summary of the invention
1, purpose: the purpose of this invention is to provide a kind of hand-held laser imaging stadimeter round the clock, its imaging round the clock and range finding.This equipment overcomes the shortcoming that can't observed object can't find range because of the low human eye of ambient light illumination at laser range finder in the past night, by laser imaging and laser ranging are integrated, laser imaging subsystem and the shared optical transmitting system of laser ranging subsystem, their also shared receiving optics simultaneously.This device structure novelty, volume are little, in light weight, stable performance, strong interference immunity, are easy to carry.
2, technical scheme:
As shown in Figure 1, a kind of hand-held laser imaging stadimeter round the clock of the present invention, it is made up of Laser emission subsystem, laser pick-off subsystem, information processing and demonstration subsystem.Position annexation between them is: Laser emission subsystem and laser pick-off subsystem are positioned at system front end, and information processing and demonstration subsystem are positioned at the system rear end.
Described Laser emission subsystem is that the semiconductor laser of 808nm, the semiconductor laser that optical maser wavelength is 905nm, the diversing lens that focal length is f1, diversing lens and the light splitting piece that focal length is f2 constitute by optical maser wavelength.
Position annexation therebetween is: optical maser wavelength is that the light shaft coaxle of the semiconductor laser of 808nm and the diversing lens that focal length is f1 is placed, and focal length is that to make wavelength be that the laser of 808nm is to shine out than the Vernonia parishii Hook angle to the diversing lens of f1.Optical maser wavelength is that the light shaft coaxle of the semiconductor laser of 905nm and the diversing lens that focal length is f2 is placed, and focal length is that the diversing lens of f2 is placed on semiconductor laser the place ahead that optical maser wavelength is 905nm, and laser emission angle is diminished.Focal length is that the optical axis of the optical axis of diversing lens of f1 and the diversing lens that focal length is f2 is orthogonal.Place at light splitting piece and two lens axis angles all at 45, and being placed on semiconductor laser and the focal length that optical maser wavelength is 808nm is between the diversing lens of f1, and is placed on the diversing lens front end that focal length is f2.Light splitting piece is that the laser of 808nm carries out transmission with wavelength, is that the laser of 905nm reflects with wavelength, and the light after the reflection is to become the 2mrad collimated light beam after the diversing lens of f1 is launched through focal length;
Described laser pick-off subsystem is made of receiver lens, light splitting piece, avalanche photodide APD receiver, charge coupled device ccd.Position annexation therebetween is: this charge coupled device ccd and receiver lens light shaft coaxle are placed, and this avalanche photodide APD receiver is placed with the receiver lens optical axis is vertical, and this light splitting piece is placed between charge coupled device ccd and the receiver lens.Place at light splitting piece and receiver lens optical axis angle at 45.Light splitting piece is that the laser of 808nm carries out transmission with the incident light medium wavelength, is that the laser of 905nm reflects with wavelength.The light that sees through is received by charge coupled device ccd, and the light of reflection is received by avalanche photodide APD receiver.
Described information processing and demonstration subsystem are made of information process unit and LCD LCD based on digital signal processor DSP.Position annexation between them is: LCD LCD is placed on the rear side based on the information process unit of digital signal processor DSP.The light signal that avalanche photodide APD receiver and charge coupled device ccd receive is shown image information and ranging data by LCD LCD after passing to real-time processing and control element (PCE) treatment conversion based on digital signal processing DSP.
Wherein, the focal length of this receiver lens is 80mm, and effective aperture is 54.0mm;
Wherein, this avalanche photodide APD receiver is the Silicon APD of PerkinElmer company, and model is C30737LH-500-92;
Wherein, this charge coupled device ccd is the 1/3-inch B/W Sony CCD of Sony company, and model is BS-568, minimal illumination 0.01Lux/F1.2, specification (mm) 49 (L) * 29 (W) * 54 (H);
What wherein, should adopt based on the information process unit of digital signal processor DSP is the DM642 chip of Ti company;
Wherein, the specification of this LCD LCD is 126.5 (w) * 100 (H) * 84.672 (V) mm, and model is JD50MLXDRD001-A056N52.
Principle of work of the present invention and flow process are: during this equipment work, optical maser wavelength is that the semiconductor laser emitted laser transmission of 808nm is crossed behind the diversing lens that light splitting piece and focal length are f1 to shine the observation area than the Vernonia parishii Hook angle, and this laser is the lighting source of Active Imaging; The laser that returns from the observation area is crossed the charge coupled device ccd that projects behind the light splitting piece with light shaft coaxle through receiver lens, transmission, and charge coupled device ccd is passed to disposal system with image information and carried out Flame Image Process and demonstrate realtime graphic by display screen then; When in display screen, observing target to be measured, the electronics cross groove on the display screen is aimed at target to be measured, find range.
During range finding, optical maser wavelength is the semiconductor laser emission laser pulse of 905nm, through focal length is that laser emission angle diminishes behind the diversing lens of f2, reflect through light splitting piece then, be the diversing lens of f1 through focal length again, make illumination beam become the accurate straight light beam irradiates of 2mrad on target to be measured; The light beam that returns from target to be measured passes through receiver lens, by projecting on the avalanche photodide APD receiver after the spectroscope reflection, pass to the processes and displays subsystem by avalanche photodide APD receiver then and just can obtain the range information of target to be measured again.
3, advantage and effect:
(1) this equipment imaging round the clock range finding, round-the-clock monitors the observation area;
(2) laser imaging and laser ranging aperture emission altogether, the aperture receives altogether.Equipment volume and weight have been reduced;
(3) laser night vision function and laser ranging function height are integrated;
(4) can accurately obtain target range information.
(4) description of drawings
Fig. 1 is the hand-held structural representation of laser imaging stadimeter round the clock
Symbol description is as follows among the figure:
1 optical maser wavelength is the semiconductor laser of 808nm; 2 optical maser wavelengths are the semiconductor laser of 905nm; 3 focal lengths are the diversing lens of f2; 4 light splitting pieces; 5 focal lengths are the diversing lens of f1; 6 charge coupled device ccds; 7 light splitting pieces; 8 avalanche photodide APD receivers; 9 receiver lenss; 10 information process units based on digital signal processor DSP; 11 LCD LCD.
(5) embodiment
See Fig. 1, a kind of hand-held laser imaging stadimeter round the clock of the present invention, it is the laser transmitting system that the diversing lens 5 of f1 is formed by optical maser wavelength is the semiconductor laser 1 of 808nm, semiconductor laser 2 that optical maser wavelength is 905nm, focal length is f2 diversing lens 3, light splitting piece 4 and focal length, the laser receiver system that charge coupled device ccd 6, light splitting piece 7, avalanche photodide APD receiver 8 and receiver lens 9 are formed and constitute based on the information process unit 10 and the LCD LCD 11 of digital signal processor DSP.Position annexation between them is: Laser emission subsystem and laser pick-off subsystem are positioned at system front end, and information processing and demonstration subsystem are positioned at the system rear end.
Described Laser emission subsystem is that the semiconductor laser 1 of 808nm, the laser instrument 2 that optical maser wavelength is 905nm, the diversing lens 5 that focal length is f1, diversing lens 3 and the light splitting piece 4 that focal length is f2 constitute by optical maser wavelength.
Wherein, lasing light emitter is to be made of semiconductor laser, and it is the laser of 808nm that semiconductor laser 1 produces wavelength, and it is the laser of 905nm that semiconductor laser 2 produces wavelength, and two semiconductor lasers 1,2 are vertically placed;
Wherein, optical maser wavelength is that semiconductor laser 1 and the focal length of 808nm is that the light shaft coaxle of the diversing lens 5 of f1 is placed, and focal length is that to make wavelength be that the laser of 808nm is to shine out than the Vernonia parishii Hook angle to the diversing lens 5 of f1.Optical maser wavelength is that semiconductor laser 2 and the focal length of 905nm is that the light shaft coaxle of the diversing lens 3 of f2 is placed, and focal length is that the diversing lens 3 of f2 is placed on that to produce optical maser wavelength be semiconductor laser 2 the place aheads of 905nm, and laser emission angle is diminished.Focal length is that the optical axis of the optical axis of diversing lens 5 of f1 and the diversing lens 3 that focal length is f2 is orthogonal;
Wherein, place at light splitting piece 4 and two lens axis angles all at 45, is placed on optical maser wavelength and is between the semiconductor laser 1 of 808nm and the diversing lens 5 that focal length is f1, and be placed on diversing lens 3 front ends that focal length is f2.Light splitting piece 4 is that the laser-transmitting of 808nm is gone over wavelength, is that the laser of 905nm reflects with wavelength, and the light after the reflection is to become the 2mrad collimated light beam after the diversing lens 5 of f1 is launched through focal length;
Described laser pick-off subsystem is made of receiver lens 9, light splitting piece 7, avalanche photodide APD receiver 8, charge coupled device ccd 6.
Wherein, charge coupled device ccd 6 is placed with receiver lens 9 light shaft coaxles, avalanche photodide APD receiver 8 and vertical placement of receiver lens 9 optical axises, and light splitting piece 7 is placed between charge coupled device ccd 6 and the receiver lens 9.Light splitting piece 7 is placed with receiver lens 9 optical axises angle at 45.Light splitting piece 7 is that the laser of 808nm carries out transmission with wavelength, is that the laser of 905nm reflects with wavelength.The light that sees through is received by charge coupled device ccd 6, and the light of reflection is received by avalanche photodide APD receiver 8.
Described information processing and demonstration subsystem are made of information process unit 10 and LCD LCD11 based on digital signal processor DSP.The light signal that avalanche photodide APD receiver 8 and charge coupled device ccd 6 receive is shown image information and ranging data by LCD LCD 11 after passing to information process unit 10 treatment conversion based on digital signal processor DSP.
Wherein, the focal length of this receiver lens is 80mm, and effective aperture is 54.0mm;
Wherein, this avalanche photodide APD receiver is the Silicon APD of PerkinElmer company, and model is C30737LH-500-92;
Wherein, this charge coupled device ccd is the 1/3-inch B/W Sony CCD of Sony company, and model is BS-568, minimal illumination 0.01Lux/F1.2, specification (mm) 49 (L) * 29 (W) * 54 (H);
What wherein, should adopt based on the information process unit of digital signal processor DSP is the DM642 chip of Ti company;
Wherein, the specification of this LCD LCD is 126.5 (w) * 100 (H) * 84.672 (V) mm, and model is JD50MLXDRD001-A056N52.
Figure 1 shows that hand-held laser imaging stadimeter structural representation round the clock, optical maser wavelength is that to cross light splitting piece 4 and focal length be that diversing lens 5 backs of f1 are to shine the observation area than the Vernonia parishii Hook angle in the semiconductor laser 1 emitted laser transmission of 808nm; The laser that returns from the observation area is crossed the charge coupled device ccd 6 that projects behind the light splitting piece 7 with light shaft coaxle through receiver lens 9, transmission, charge coupled device ccd 6 is passed to information process unit 10 based on digital signal processor DSP with image information then, according to corresponding algorithm the image that collects is handled, and demonstrated realtime graphic by LCD LCD 11; When in LCD LCD 11, observing target to be measured, electronics cross groove on the LCD LCD 11 is aimed at target to be measured, triggering optical maser wavelength is the semiconductor laser 2 emission laser pulses of 905nm, the process focal length is that the diversing lens 3 back laser emission angles of f2 diminish, reflect through light splitting piece 4 then, be the diversing lens 5 of f1 through focal length again, make illumination beam become the accurate planar beam of 2mrad and shine on the target to be measured; The light beam that returns from target to be measured passes through receiver lens 9, again by projecting on the avalanche photodide APD receiver 8 after spectroscope 7 reflections, pass to information process unit 10 by avalanche photodide APD receiver 8 then based on digital signal processor DSP, after calculating target range information to be measured, the image that presents with the laser imaging module superposes, and just can obtain the range information of target to be measured then when LCD LCD 11 sees real-time scene.
Claims (6)
1. hand laser imaging stadimeter round the clock for one kind, it is characterized in that: it is made up of Laser emission subsystem, laser pick-off subsystem, information processing and demonstration subsystem, position annexation between them is: Laser emission subsystem and laser pick-off subsystem are positioned at system front end, and information processing and demonstration subsystem are positioned at the system rear end;
Described Laser emission subsystem is that the semiconductor laser of 808nm, the semiconductor laser that optical maser wavelength is 905nm, the diversing lens that focal length is f1, diversing lens and the light splitting piece that focal length is f2 constitute by optical maser wavelength, position annexation therebetween is: this optical maser wavelength is that the light shaft coaxle of the semiconductor laser of 808nm and the diversing lens that focal length is f1 is placed, and this focal length is that to make wavelength be that the laser of 808nm is to shine out than the Vernonia parishii Hook angle to the diversing lens of f1; This optical maser wavelength is that the light shaft coaxle of the semiconductor laser of 905nm and the diversing lens that focal length is f2 is placed, and focal length is that the diversing lens of f2 is placed on semiconductor laser the place ahead that optical maser wavelength is 905nm, and laser emission angle is diminished; This focal length is that the optical axis of the optical axis of diversing lens of f1 and the diversing lens that focal length is f2 is orthogonal; Place at this light splitting piece and two lens axis angles all at 45, and being placed on semiconductor laser and the focal length that optical maser wavelength is 808nm is between the diversing lens of f1, and is placed on the diversing lens front end that focal length is f2; Light splitting piece is that the laser of 808nm carries out transmission with wavelength, is that the laser of 905nm reflects with wavelength, and the light after the reflection is to become the 2mrad collimated light beam after the diversing lens of f1 is launched through focal length;
Described laser pick-off subsystem is made of receiver lens, light splitting piece, avalanche photodide APD receiver, charge coupled device ccd, position annexation therebetween is: this charge coupled device ccd and receiver lens light shaft coaxle are placed, this avalanche photodide APD receiver is placed with the receiver lens optical axis is vertical, this light splitting piece is placed between charge coupled device ccd and the receiver lens, and place at light splitting piece and receiver lens optical axis angle at 45; Light splitting piece is that the laser of 808nm carries out transmission with the incident light medium wavelength, is that the laser of 905nm reflects with wavelength; The light that sees through is received by charge coupled device ccd, and the light of reflection is received by avalanche photodide APD receiver;
Described information processing and demonstration subsystem are made of information process unit and LCD LCD based on digital signal processor DSP, and the position annexation between them is: LCD LCD is placed on the rear side based on the information process unit of digital signal processor DSP; The light signal that avalanche photodide APD receiver and charge coupled device ccd receive is shown image information and ranging data by LCD LCD after passing to information process unit treatment conversion based on digital signal processor DSP.
2. a kind of hand-held laser imaging stadimeter round the clock according to claim 1, it is characterized in that: the focal length of this receiver lens is 80mm, effective aperture is 54.0mm.
3. a kind of hand-held laser imaging stadimeter round the clock according to claim 1, it is characterized in that: this avalanche photodide APD receiver is the Silicon APD of PerkinElmer company, and model is C30737LH-500-92.
4. a kind of hand-held laser imaging stadimeter round the clock according to claim 1, it is characterized in that: this charge coupled device ccd is the 1/3-inch B/W Sony CCD of Sony company, model is BS-568, minimal illumination 0.01Lux/F1.2, and specification is 49 * 29 * 54mm.
5. a kind of hand-held laser imaging stadimeter round the clock according to claim 1 is characterized in that: what should adopt based on the information process unit of digital signal processor DSP is the DM642 chip of Ti company.
6. a kind of hand-held laser imaging stadimeter round the clock according to claim 1, it is characterized in that: the specification of this LCD LCD is 126.5 * 100 * 84.672mm, model is JD50MLXD RD001-A056N52.
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| CN2010102934332A CN101975953A (en) | 2010-09-27 | 2010-09-27 | Hand-held round-the-clock laser imaging distance measurer |
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| CN2010102934332A CN101975953A (en) | 2010-09-27 | 2010-09-27 | Hand-held round-the-clock laser imaging distance measurer |
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| CN103186015A (en) * | 2011-12-28 | 2013-07-03 | 天津市亚安科技股份有限公司 | Camera night vision illuminating system and control method thereof |
| CN103234517A (en) * | 2013-05-03 | 2013-08-07 | 王建岳 | Measuring method and measuring tool of spatial distance |
| CN103308029A (en) * | 2013-05-17 | 2013-09-18 | 北京航空航天大学 | Automatic cat eye effect target distance measurement method |
| CN103412312A (en) * | 2013-07-03 | 2013-11-27 | 王振兴 | Laser ranging method and device |
| CN104849718A (en) * | 2014-04-25 | 2015-08-19 | 常州市新瑞得仪器有限公司 | Laser range finder |
| CN105629255A (en) * | 2014-11-03 | 2016-06-01 | 信泰光学(深圳)有限公司 | Rangefinder |
| CN107632487A (en) * | 2013-04-20 | 2018-01-26 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and relevant source system |
| CN108008399A (en) * | 2016-10-28 | 2018-05-08 | 江苏徕兹测控科技有限公司 | A kind of hand-held laser ranging system and its method |
| CN108594248A (en) * | 2018-03-08 | 2018-09-28 | 北京集光通达科技股份有限公司 | Laser lens and laser ranging system |
| CN110018601A (en) * | 2017-12-14 | 2019-07-16 | 阿诺尔德-里希特电影技术两合公司 | Camera chain with the rangefinder based on laser |
| CN110456371A (en) * | 2019-08-28 | 2019-11-15 | 上海禾赛光电科技有限公司 | A kind of laser radar system and relevant measurement method |
| CN110988892A (en) * | 2019-12-09 | 2020-04-10 | 北京信息科技大学 | Laser active detection system |
| CN111344598A (en) * | 2018-07-26 | 2020-06-26 | 深圳市瑞尔幸电子有限公司 | Common-path digital imaging laser range finder |
| CN112213732A (en) * | 2020-10-09 | 2021-01-12 | 中国人民解放军陆军工程大学 | Day and night reconnaissance ranging device based on InGaAs focal plane detection |
| CN113614566A (en) * | 2019-03-27 | 2021-11-05 | 松下知识产权经营株式会社 | Distance measurement method, distance measurement device, and program |
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| CN103186015A (en) * | 2011-12-28 | 2013-07-03 | 天津市亚安科技股份有限公司 | Camera night vision illuminating system and control method thereof |
| CN103186015B (en) * | 2011-12-28 | 2015-12-16 | 天津市亚安科技股份有限公司 | Video camera night-vision illumination system and control method thereof |
| CN107632487B (en) * | 2013-04-20 | 2020-03-24 | 深圳光峰科技股份有限公司 | Light emitting device and related light source system |
| CN107632487A (en) * | 2013-04-20 | 2018-01-26 | 深圳市绎立锐光科技开发有限公司 | Light-emitting device and relevant source system |
| CN103234517A (en) * | 2013-05-03 | 2013-08-07 | 王建岳 | Measuring method and measuring tool of spatial distance |
| CN103308029A (en) * | 2013-05-17 | 2013-09-18 | 北京航空航天大学 | Automatic cat eye effect target distance measurement method |
| CN103412312A (en) * | 2013-07-03 | 2013-11-27 | 王振兴 | Laser ranging method and device |
| CN104849718A (en) * | 2014-04-25 | 2015-08-19 | 常州市新瑞得仪器有限公司 | Laser range finder |
| CN105629255B (en) * | 2014-11-03 | 2019-02-12 | 信泰光学(深圳)有限公司 | Rangefinder |
| CN105629255A (en) * | 2014-11-03 | 2016-06-01 | 信泰光学(深圳)有限公司 | Rangefinder |
| CN108008399A (en) * | 2016-10-28 | 2018-05-08 | 江苏徕兹测控科技有限公司 | A kind of hand-held laser ranging system and its method |
| CN110018601A (en) * | 2017-12-14 | 2019-07-16 | 阿诺尔德-里希特电影技术两合公司 | Camera chain with the rangefinder based on laser |
| CN110018601B (en) * | 2017-12-14 | 2022-07-22 | 阿诺尔德-里希特电影技术两合公司 | Camera system with laser-based rangefinder |
| CN108594248A (en) * | 2018-03-08 | 2018-09-28 | 北京集光通达科技股份有限公司 | Laser lens and laser ranging system |
| CN111344598A (en) * | 2018-07-26 | 2020-06-26 | 深圳市瑞尔幸电子有限公司 | Common-path digital imaging laser range finder |
| CN111344598B (en) * | 2018-07-26 | 2024-04-16 | 深圳市瑞尔幸电子有限公司 | Laser range finder for common-path digital imaging |
| CN113614566A (en) * | 2019-03-27 | 2021-11-05 | 松下知识产权经营株式会社 | Distance measurement method, distance measurement device, and program |
| CN110456371A (en) * | 2019-08-28 | 2019-11-15 | 上海禾赛光电科技有限公司 | A kind of laser radar system and relevant measurement method |
| CN110988892A (en) * | 2019-12-09 | 2020-04-10 | 北京信息科技大学 | Laser active detection system |
| CN112213732A (en) * | 2020-10-09 | 2021-01-12 | 中国人民解放军陆军工程大学 | Day and night reconnaissance ranging device based on InGaAs focal plane detection |
| CN112213732B (en) * | 2020-10-09 | 2023-07-18 | 中国人民解放军陆军工程大学 | Day and night reconnaissance range unit based on InGaAs focal plane detection |
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Application publication date: 20110216 |