DIAGNOSTIC METHOD OF OPTICAL SYSTEM IN LASER-BEAM SCANNING RANGE FINDER

DIAGNOSTIC METHOD OF OPTICAL SYSTEM IN LASER-BEAM SCANNING RANGE FINDER

PURPOSE:To realize a low-cost and high-reliability radar regarding the self- diagnostic method of an optical system-in a laser-beam scanning pulse radar. CONSTITUTION:A laser-beam scanning range finder is constituted in the following manner: its optical system scans, by using a laser-beam scanning p...

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ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
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description PURPOSE:To realize a low-cost and high-reliability radar regarding the self- diagnostic method of an optical system-in a laser-beam scanning pulse radar. CONSTITUTION:A laser-beam scanning range finder is constituted in the following manner: its optical system scans, by using a laser-beam scanning part 2a, a laser beam LTX which is outputted by a laser-beam transmission part 1a; and a scanning laser beam LS is transmitted via a light-transmitting window 16a. The laser-beam scanning range finder performs a diagnostic operation in the following manner. That is to say, a laser beam LL which has been reflected regularly by the light-transmitting window 16a is detected by means of a photodetection element 20. When its intensity VL is lowered to a prescribed predetermined intensity VTH1 or lower, it is diagnosed that an abnormality which lowers a transmission output exists in the laser-beam transmission part 1a. On the other hand, when the intensity VG of a laser beam LG reflected in a diffused manner by the light-transmitting window 16a is raised to a prescribed predetermined intensity VTH2 or higher, it is diagnosed that a stain 17a exists on the light-transmitting window 16a.
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CONSTITUTION:A laser-beam scanning range finder is constituted in the following manner: its optical system scans, by using a laser-beam scanning part 2a, a laser beam LTX which is outputted by a laser-beam transmission part 1a; and a scanning laser beam LS is transmitted via a light-transmitting window 16a. The laser-beam scanning range finder performs a diagnostic operation in the following manner. That is to say, a laser beam LL which has been reflected regularly by the light-transmitting window 16a is detected by means of a photodetection element 20. When its intensity VL is lowered to a prescribed predetermined intensity VTH1 or lower, it is diagnosed that an abnormality which lowers a transmission output exists in the laser-beam transmission part 1a. On the other hand, when the intensity VG of a laser beam LG reflected in a diffused manner by the light-transmitting window 16a is raised to a prescribed predetermined intensity VTH2 or higher, it is diagnosed that a stain 17a exists on the light-transmitting window 16a.</description><language>eng</language><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; MEASURING ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING</subject><creationdate>1993</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19930903&amp;DB=EPODOC&amp;CC=JP&amp;NR=H05223937A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25562,76317</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19930903&amp;DB=EPODOC&amp;CC=JP&amp;NR=H05223937A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ASAMI HIDEO</creatorcontrib><title>DIAGNOSTIC METHOD OF OPTICAL SYSTEM IN LASER-BEAM SCANNING RANGE FINDER</title><description>PURPOSE:To realize a low-cost and high-reliability radar regarding the self- diagnostic method of an optical system-in a laser-beam scanning pulse radar. CONSTITUTION:A laser-beam scanning range finder is constituted in the following manner: its optical system scans, by using a laser-beam scanning part 2a, a laser beam LTX which is outputted by a laser-beam transmission part 1a; and a scanning laser beam LS is transmitted via a light-transmitting window 16a. The laser-beam scanning range finder performs a diagnostic operation in the following manner. That is to say, a laser beam LL which has been reflected regularly by the light-transmitting window 16a is detected by means of a photodetection element 20. When its intensity VL is lowered to a prescribed predetermined intensity VTH1 or lower, it is diagnosed that an abnormality which lowers a transmission output exists in the laser-beam transmission part 1a. On the other hand, when the intensity VG of a laser beam LG reflected in a diffused manner by the light-transmitting window 16a is raised to a prescribed predetermined intensity VTH2 or higher, it is diagnosed that a stain 17a exists on the light-transmitting window 16a.</description><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</subject><subject>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</subject><subject>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</subject><subject>MEASURING</subject><subject>PHYSICS</subject><subject>RADIO DIRECTION-FINDING</subject><subject>RADIO NAVIGATION</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1993</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHB38XR09_MPDvF0VvB1DfHwd1Hwd1PwDwDyHX0UgiODQ1x9FTz9FHwcg12DdJ1cHX0Vgp0d_fw8_dwVghz93F0V3Dz9XFyDeBhY0xJzilN5oTQ3g6Kba4izh25qQX58anFBYnJqXmpJvFeAh4GpkZGxpbG5ozExagC_DyyA</recordid><startdate>19930903</startdate><enddate>19930903</enddate><creator>ASAMI HIDEO</creator><scope>EVB</scope></search><sort><creationdate>19930903</creationdate><title>DIAGNOSTIC METHOD OF OPTICAL SYSTEM IN LASER-BEAM SCANNING RANGE FINDER</title><author>ASAMI HIDEO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH05223937A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1993</creationdate><topic>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</topic><topic>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</topic><topic>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</topic><topic>MEASURING</topic><topic>PHYSICS</topic><topic>RADIO DIRECTION-FINDING</topic><topic>RADIO NAVIGATION</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>ASAMI HIDEO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>ASAMI HIDEO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>DIAGNOSTIC METHOD OF OPTICAL SYSTEM IN LASER-BEAM SCANNING RANGE FINDER</title><date>1993-09-03</date><risdate>1993</risdate><abstract>PURPOSE:To realize a low-cost and high-reliability radar regarding the self- diagnostic method of an optical system-in a laser-beam scanning pulse radar. CONSTITUTION:A laser-beam scanning range finder is constituted in the following manner: its optical system scans, by using a laser-beam scanning part 2a, a laser beam LTX which is outputted by a laser-beam transmission part 1a; and a scanning laser beam LS is transmitted via a light-transmitting window 16a. The laser-beam scanning range finder performs a diagnostic operation in the following manner. That is to say, a laser beam LL which has been reflected regularly by the light-transmitting window 16a is detected by means of a photodetection element 20. When its intensity VL is lowered to a prescribed predetermined intensity VTH1 or lower, it is diagnosed that an abnormality which lowers a transmission output exists in the laser-beam transmission part 1a. On the other hand, when the intensity VG of a laser beam LG reflected in a diffused manner by the light-transmitting window 16a is raised to a prescribed predetermined intensity VTH2 or higher, it is diagnosed that a stain 17a exists on the light-transmitting window 16a.</abstract><oa>free_for_read</oa></addata></record>
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subjects ANALOGOUS ARRANGEMENTS USING OTHER WAVES
DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES
LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES
MEASURING
PHYSICS
RADIO DIRECTION-FINDING
RADIO NAVIGATION
TESTING
title DIAGNOSTIC METHOD OF OPTICAL SYSTEM IN LASER-BEAM SCANNING RANGE FINDER
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