GB8711609D0 - Optical detector - Google Patents

Optical detector

Info

Publication number
GB8711609D0
GB8711609D0 GB878711609A GB8711609A GB8711609D0 GB 8711609 D0 GB8711609 D0 GB 8711609D0 GB 878711609 A GB878711609 A GB 878711609A GB 8711609 A GB8711609 A GB 8711609A GB 8711609 D0 GB8711609 D0 GB 8711609D0
Authority
GB
United Kingdom
Prior art keywords
optical detector
detector
optical
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.)
Pending
Application number
GB878711609A
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.)
WILD G
Original Assignee
WILD G
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 WILD G filed Critical WILD G
Priority to GB878711609A priority Critical patent/GB8711609D0/en
Publication of GB8711609D0 publication Critical patent/GB8711609D0/en
Priority to GB08811153A priority patent/GB2205156A/en
Pending legal-status Critical Current

Links

GB878711609A 1987-05-16 1987-05-16 Optical detector Pending GB8711609D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB878711609A GB8711609D0 (en) 1987-05-16 1987-05-16 Optical detector
GB08811153A GB2205156A (en) 1987-05-16 1988-05-11 Optical detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878711609A GB8711609D0 (en) 1987-05-16 1987-05-16 Optical detector

Publications (1)

Publication Number Publication Date
GB8711609D0 true GB8711609D0 (en) 1987-06-24

Family

ID=10617462

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878711609A Pending GB8711609D0 (en) 1987-05-16 1987-05-16 Optical detector
GB08811153A Withdrawn GB2205156A (en) 1987-05-16 1988-05-11 Optical detector

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB08811153A Withdrawn GB2205156A (en) 1987-05-16 1988-05-11 Optical detector

Country Status (1)

Country Link
GB (2) GB8711609D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4333707C2 (en) * 1993-10-02 1996-12-05 Insta Elektro Gmbh & Co Kg Passive infrared motion detector
US5414255A (en) * 1993-11-08 1995-05-09 Scantronic Limited Intrusion detector having a generally planar fresnel lens provided on a planar mirror surface
DE19822053B4 (en) * 1998-05-16 2007-01-18 Insta Elektro Gmbh Fresnel lens arrangement for passive infrared motion detectors
US6678097B2 (en) 2001-05-04 2004-01-13 Honeywell International Inc. Non-planar fresnel reflector arrays, mold structures and mold patterns for eliminating negative draft during molding
DE20108545U1 (en) * 2001-05-22 2002-09-26 Merten GmbH & Co. KG, 51674 Wiehl Mask for a motion detector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4321594A (en) * 1979-11-01 1982-03-23 American District Telegraph Company Passive infrared detector
US4275303A (en) * 1979-11-13 1981-06-23 Arrowhead Enterprises, Inc. Passive infrared intrusion detection system
US4460829A (en) * 1982-05-17 1984-07-17 Cerberus Ag Infrared intrusion detector with response indicator light
GB2124363B (en) * 1982-07-27 1985-12-18 I R Systems Ltd Intruder detector
GB2173013A (en) * 1985-03-29 1986-10-01 Philips Electronic Associated Arrays of lenses

Also Published As

Publication number Publication date
GB8811153D0 (en) 1988-06-15
GB2205156A (en) 1988-11-30

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