FR2459983B1 - - Google Patents

Info

Publication number
FR2459983B1
FR2459983B1 FR7916254A FR7916254A FR2459983B1 FR 2459983 B1 FR2459983 B1 FR 2459983B1 FR 7916254 A FR7916254 A FR 7916254A FR 7916254 A FR7916254 A FR 7916254A FR 2459983 B1 FR2459983 B1 FR 2459983B1
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
FR7916254A
Other languages
French (fr)
Other versions
FR2459983A1 (en
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.)
COMETA SA
Original Assignee
COMETA SA
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 COMETA SA filed Critical COMETA SA
Priority to FR7916254A priority Critical patent/FR2459983A1/en
Publication of FR2459983A1 publication Critical patent/FR2459983A1/en
Application granted granted Critical
Publication of FR2459983B1 publication Critical patent/FR2459983B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G08B13/184—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using radiation reflectors
    • 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
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G01V8/14—Detecting, e.g. by using light barriers using one transmitter and one receiver using reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Burglar Alarm Systems (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
FR7916254A 1979-06-25 1979-06-25 Optical detection of passage of bright object - using detector which operates in reflex mode for positioning adjustment and using IR beam Granted FR2459983A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7916254A FR2459983A1 (en) 1979-06-25 1979-06-25 Optical detection of passage of bright object - using detector which operates in reflex mode for positioning adjustment and using IR beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7916254A FR2459983A1 (en) 1979-06-25 1979-06-25 Optical detection of passage of bright object - using detector which operates in reflex mode for positioning adjustment and using IR beam

Publications (2)

Publication Number Publication Date
FR2459983A1 FR2459983A1 (en) 1981-01-16
FR2459983B1 true FR2459983B1 (en) 1981-12-04

Family

ID=9227045

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7916254A Granted FR2459983A1 (en) 1979-06-25 1979-06-25 Optical detection of passage of bright object - using detector which operates in reflex mode for positioning adjustment and using IR beam

Country Status (1)

Country Link
FR (1) FR2459983A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0466522B1 (en) * 1990-07-11 1997-11-26 Optex Co. Ltd. Infrared intruder-detection system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717873A (en) * 1970-11-05 1973-02-20 Sperry Rand Corp Ship's maneuver assessment system
US3725918A (en) * 1970-11-18 1973-04-03 Sperry Rand Corp Collision avoidance display apparatus for maneuverable craft
FR2134821A5 (en) * 1971-04-21 1972-12-08 Cit Alcatel
US3964064A (en) * 1972-09-21 1976-06-15 Brandao Ruy L Data display system having a multilevel video storage device
GB1498413A (en) * 1974-05-01 1978-01-18 Decca Ltd Pulse radar apparatus
US3971018A (en) * 1974-06-24 1976-07-20 Sperry Rand Corporation Marine traffic conflict assessment system

Also Published As

Publication number Publication date
FR2459983A1 (en) 1981-01-16

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Legal Events

Date Code Title Description
ST Notification of lapse