Device for the measurement of a displacement of an object using a self-mixing technique
A device for the measurement of a displacement of an object (2) uses a self-mixing technique. A laser (1) such as a laser diode having a laser cavity and allowing mode hopping to occur is used in conduction with an external cavity (12) encompassing the laser cavity (11) and being linked to said obje...
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| creator | BUEHLER, STEEVE MEIER, CHRISTOPH |
| description | A device for the measurement of a displacement of an object (2) uses a self-mixing technique. A laser (1) such as a laser diode having a laser cavity and allowing mode hopping to occur is used in conduction with an external cavity (12) encompassing the laser cavity (11) and being linked to said object (2). A first photo detector (31) is provided to measure the AM variation of the laser signal of the laser (1). The device further comprises an optical-frequency-to-intensity-converter (3) receiving a laser signal of the laser (1). This converter can be a Fabry-Perot resonator eg. in the form of a PMMA film. A second photo detector (4) is provided receiving the converted signal (24) transmitted through the optical-fequency-to-intensity-converter (3) to generate a frequency modulated output signal representing the displacement or velocity to be measured. |
| format | Patent |
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A laser (1) such as a laser diode having a laser cavity and allowing mode hopping to occur is used in conduction with an external cavity (12) encompassing the laser cavity (11) and being linked to said object (2). A first photo detector (31) is provided to measure the AM variation of the laser signal of the laser (1). The device further comprises an optical-frequency-to-intensity-converter (3) receiving a laser signal of the laser (1). This converter can be a Fabry-Perot resonator eg. in the form of a PMMA film. A second photo detector (4) is provided receiving the converted signal (24) transmitted through the optical-fequency-to-intensity-converter (3) to generate a frequency modulated output signal representing the displacement or velocity to be measured.</description><language>eng ; fre ; ger</language><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES ; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT ; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES ; MEASURING ; MEASURING ANGLES ; MEASURING AREAS ; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS ; MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK ; PHYSICS ; RADIO DIRECTION-FINDING ; RADIO NAVIGATION ; TESTING</subject><creationdate>2006</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&date=20060412&DB=EPODOC&CC=EP&NR=1645837A1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,778,883,25547,76298</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20060412&DB=EPODOC&CC=EP&NR=1645837A1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>BUEHLER, STEEVE</creatorcontrib><creatorcontrib>MEIER, CHRISTOPH</creatorcontrib><title>Device for the measurement of a displacement of an object using a self-mixing technique</title><description>A device for the measurement of a displacement of an object (2) uses a self-mixing technique. A laser (1) such as a laser diode having a laser cavity and allowing mode hopping to occur is used in conduction with an external cavity (12) encompassing the laser cavity (11) and being linked to said object (2). A first photo detector (31) is provided to measure the AM variation of the laser signal of the laser (1). The device further comprises an optical-frequency-to-intensity-converter (3) receiving a laser signal of the laser (1). This converter can be a Fabry-Perot resonator eg. in the form of a PMMA film. A second photo detector (4) is provided receiving the converted signal (24) transmitted through the optical-fequency-to-intensity-converter (3) to generate a frequency modulated output signal representing the displacement or velocity to be measured.</description><subject>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</subject><subject>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</subject><subject>INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT</subject><subject>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</subject><subject>MEASURING</subject><subject>MEASURING ANGLES</subject><subject>MEASURING AREAS</subject><subject>MEASURING IRREGULARITIES OF SURFACES OR CONTOURS</subject><subject>MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS</subject><subject>MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK</subject><subject>PHYSICS</subject><subject>RADIO DIRECTION-FINDING</subject><subject>RADIO NAVIGATION</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2006</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZAh3SS3LTE5VSMsvUijJSFXITU0sLi1KzU3NK1HIT1NIVEjJLC7ISUxGiOQp5CdlpSaXKJQWZ-alA1UUp-ak6eZmVoB4JanJGXmZhaWpPAysaYk5xam8UJqbQcHNNcTZQze1ID8-tbgAaGJeakm8a4ChmYmphbG5o6ExEUoAmGE5Ag</recordid><startdate>20060412</startdate><enddate>20060412</enddate><creator>BUEHLER, STEEVE</creator><creator>MEIER, CHRISTOPH</creator><scope>EVB</scope></search><sort><creationdate>20060412</creationdate><title>Device for the measurement of a displacement of an object using a self-mixing technique</title><author>BUEHLER, STEEVE ; MEIER, CHRISTOPH</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_EP1645837A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre ; ger</language><creationdate>2006</creationdate><topic>ANALOGOUS ARRANGEMENTS USING OTHER WAVES</topic><topic>DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES</topic><topic>INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT</topic><topic>LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES</topic><topic>MEASURING</topic><topic>MEASURING ANGLES</topic><topic>MEASURING AREAS</topic><topic>MEASURING IRREGULARITIES OF SURFACES OR CONTOURS</topic><topic>MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS</topic><topic>MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK</topic><topic>PHYSICS</topic><topic>RADIO DIRECTION-FINDING</topic><topic>RADIO NAVIGATION</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>BUEHLER, STEEVE</creatorcontrib><creatorcontrib>MEIER, CHRISTOPH</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>BUEHLER, STEEVE</au><au>MEIER, CHRISTOPH</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Device for the measurement of a displacement of an object using a self-mixing technique</title><date>2006-04-12</date><risdate>2006</risdate><abstract>A device for the measurement of a displacement of an object (2) uses a self-mixing technique. A laser (1) such as a laser diode having a laser cavity and allowing mode hopping to occur is used in conduction with an external cavity (12) encompassing the laser cavity (11) and being linked to said object (2). A first photo detector (31) is provided to measure the AM variation of the laser signal of the laser (1). The device further comprises an optical-frequency-to-intensity-converter (3) receiving a laser signal of the laser (1). This converter can be a Fabry-Perot resonator eg. in the form of a PMMA film. A second photo detector (4) is provided receiving the converted signal (24) transmitted through the optical-fequency-to-intensity-converter (3) to generate a frequency modulated output signal representing the displacement or velocity to be measured.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng ; fre ; ger |
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| subjects | ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING |
| title | Device for the measurement of a displacement of an object using a self-mixing technique |
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