EP 0014825 A2 19800903 - Optical apparatus for passive infrared movement detector.
Title (en)
Optical apparatus for passive infrared movement detector.
Title (de)
Optische Anordnung für einen passiven Infrarot-Bewegungsmelder.
Title (fr)
Dispositif optique pour la détection passive à rayonnement infrarouge de mouvement.
Publication
Application
Priority
DE 2904654 A 19790207
Abstract (en)
[origin: US4268752A] An optical arrangement for a passive infrared motion detector which has an infrared detector unit and a system for directing infrared radiation from at least two separate directions to be monitored onto the detector unit characterized by the system including a single focusing device and separate, flat reflecting surfaces or directing mirrors, which are arranged with at least one flat reflecting surface associated with each direction to be monitored to reflect a beam or solid angle of radiation from the direction onto the single focusing device which device will focus the radiation along a folded beam path to the detector unit.
Abstract (de)
Bei einer optischen Anordung für einen passiven Infrarot-Bewegungsmelder wird vorgeschlagen, funktionell die Strahlenaufteilung (4 bis 10) für mehrere Sichtfelder und die Fokussierung (2,3) auf einen Detektor (1) zu trennen. Dadurch vermeidet die Strahlenaufteilung Überschneidungen der Strahlenbündel.
IPC 1-7
IPC 8 full level
G08B 13/193 (2006.01)
CPC (source: EP US)
G08B 13/193 (2013.01 - EP US); Y10S 250/01 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0014825 A2 19800903; EP 0014825 A3 19810107; BR 8000724 A 19801021; DE 2904654 A1 19800814; DK 51380 A 19800808; NO 794145 L 19800808; US 4268752 A 19810519
DOCDB simple family (application)
EP 80100101 A 19800109; BR 8000724 A 19800206; DE 2904654 A 19790207; DK 51380 A 19800206; NO 794145 A 19791218; US 4065279 A 19790521