CA1254282A - Detecteur anti-effractions a l'infrarouge - Google Patents

Detecteur anti-effractions a l'infrarouge

Info

Publication number
CA1254282A
CA1254282A CA000518430A CA518430A CA1254282A CA 1254282 A CA1254282 A CA 1254282A CA 000518430 A CA000518430 A CA 000518430A CA 518430 A CA518430 A CA 518430A CA 1254282 A CA1254282 A CA 1254282A
Authority
CA
Canada
Prior art keywords
substantially cylindrical
fresnel lens
cylindrical fresnel
infrared
sensor
Prior art date
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
CA000518430A
Other languages
English (en)
Inventor
Alfred Wuthrich
Walter Meier
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.)
Cerberus AG
Original Assignee
Cerberus AG
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 Cerberus AG filed Critical Cerberus AG
Priority to CA000518430A priority Critical patent/CA1254282A/fr
Application granted granted Critical
Publication of CA1254282A publication Critical patent/CA1254282A/fr
Expired legal-status Critical Current

Links

Landscapes

  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)
CA000518430A 1986-09-17 1986-09-17 Detecteur anti-effractions a l'infrarouge Expired CA1254282A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000518430A CA1254282A (fr) 1986-09-17 1986-09-17 Detecteur anti-effractions a l'infrarouge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000518430A CA1254282A (fr) 1986-09-17 1986-09-17 Detecteur anti-effractions a l'infrarouge

Publications (1)

Publication Number Publication Date
CA1254282A true CA1254282A (fr) 1989-05-16

Family

ID=4133958

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000518430A Expired CA1254282A (fr) 1986-09-17 1986-09-17 Detecteur anti-effractions a l'infrarouge

Country Status (1)

Country Link
CA (1) CA1254282A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6933846B2 (en) 2000-04-18 2005-08-23 Visonic Ltd. Displacement sensing system
US9188487B2 (en) 2011-11-16 2015-11-17 Tyco Fire & Security Gmbh Motion detection systems and methodologies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6933846B2 (en) 2000-04-18 2005-08-23 Visonic Ltd. Displacement sensing system
US9188487B2 (en) 2011-11-16 2015-11-17 Tyco Fire & Security Gmbh Motion detection systems and methodologies

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Legal Events

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