FR2160927B1 - - Google Patents

Info

Publication number
FR2160927B1
FR2160927B1 FR7241351A FR7241351A FR2160927B1 FR 2160927 B1 FR2160927 B1 FR 2160927B1 FR 7241351 A FR7241351 A FR 7241351A FR 7241351 A FR7241351 A FR 7241351A FR 2160927 B1 FR2160927 B1 FR 2160927B1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7241351A
Other versions
FR2160927A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of FR2160927A1 publication Critical patent/FR2160927A1/fr
Application granted granted Critical
Publication of FR2160927B1 publication Critical patent/FR2160927B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
    • G01V8/26—Detecting, e.g. by using light barriers using multiple transmitters or receivers using mechanical scanning systems
FR7241351A 1971-11-22 1972-11-21 Expired FR2160927B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2157815A DE2157815C3 (de) 1971-11-22 1971-11-22 Gerät zur Erzeugung eines Lichtvorhanges

Publications (2)

Publication Number Publication Date
FR2160927A1 FR2160927A1 (fr) 1973-07-06
FR2160927B1 true FR2160927B1 (fr) 1976-10-29

Family

ID=5825767

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7241351A Expired FR2160927B1 (fr) 1971-11-22 1972-11-21

Country Status (4)

Country Link
US (1) US3809891A (fr)
DE (1) DE2157815C3 (fr)
FR (1) FR2160927B1 (fr)
IT (1) IT970072B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2818942C2 (de) * 1978-04-28 1986-03-27 Zellweger Uster Ag, Uster Verfahren zur Raumüberwachung und Vorrichtung zur Durchführung des Verfahrens
US4272189A (en) * 1979-08-16 1981-06-09 The United States Of America As Represented By The Secretary Of The Navy Electro-optical projectile analyzer
FR2538567B1 (fr) * 1982-12-24 1986-02-07 Bocquet Expl Bureau Etu Indles Dispositif de balayage photo-electrique par deviation d'un rayon lumineux, et application a la determination des cotes minimales et maximales d'un contour
US5168386A (en) * 1990-10-22 1992-12-01 Tencor Instruments Flat field telecentric scanner
US5565686A (en) * 1993-09-07 1996-10-15 Laser Score, Inc. Method and apparatus for detecting the presence and location of objects in a field via scanned optical beams
WO1995007471A1 (fr) * 1993-09-07 1995-03-16 Laserscore, Inc. Procede et appareil de detection de la presence et de localisation d'un objet dans un champ
EP0825458B1 (fr) * 1996-03-08 2002-10-30 Nihon Shingo Kabushiki Kaisha Barriere optique
US7502126B2 (en) * 2005-11-18 2009-03-10 Pitney Bowes Inc. Optical position/motion tracking system
DE102006022717A1 (de) * 2006-05-12 2007-11-15 Büromat IT Systeme Zwickau GmbH Vorrichtung und Verfahren zum Erkennen von Objekten
US7872746B2 (en) * 2006-12-22 2011-01-18 Alcon, Inc. Single light source uniform parallel light curtain
US8760637B2 (en) 2010-08-30 2014-06-24 Alcon Research, Ltd. Optical sensing system including electronically switched optical magnification

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955209A (en) * 1956-10-15 1960-10-04 Kollsman Instr Corp Photo-electronic triggering device
DE1221927B (de) * 1964-05-06 1966-07-28 Sick Erwin Lichtschranke, insbesondere Unfallschutzvorrichtung
FR1468820A (fr) * 1964-09-28 1967-02-10 Decca Ltd Perfectionnements aux appareils de mesure de vitesse doppler
US3428817A (en) * 1964-11-27 1969-02-18 Jones & Laughlin Steel Corp Length measurer with plurality of photocells which are sequentially gated
US3597755A (en) * 1968-05-28 1971-08-03 Sanders Associates Inc Active electro-optical intrusion alarm system having automatic balancing means

Also Published As

Publication number Publication date
FR2160927A1 (fr) 1973-07-06
US3809891A (en) 1974-05-07
IT970072B (it) 1974-04-10
DE2157815C3 (de) 1978-04-13
DE2157815A1 (de) 1973-07-19
DE2157815B2 (de) 1977-08-11

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse
RC Opposition against decision of lapse
DA Annulment of decision of lapse
ST Notification of lapse