GB8811152D0 - Optical detector - Google Patents

Optical detector

Info

Publication number
GB8811152D0
GB8811152D0 GB888811152A GB8811152A GB8811152D0 GB 8811152 D0 GB8811152 D0 GB 8811152D0 GB 888811152 A GB888811152 A GB 888811152A GB 8811152 A GB8811152 A GB 8811152A GB 8811152 D0 GB8811152 D0 GB 8811152D0
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.)
Withdrawn
Application number
GB888811152A
Other versions
GB2221984A (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.)
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 GB8811152A priority Critical patent/GB2221984A/en
Publication of GB8811152D0 publication Critical patent/GB8811152D0/en
Publication of GB2221984A publication Critical patent/GB2221984A/en
Withdrawn legal-status Critical Current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
    • G08B13/189—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems
    • G08B13/19—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems
    • G08B13/193—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using passive radiation detection systems using infrared-radiation detection systems using focusing means
GB8811152A 1988-05-11 1988-05-11 Optical detector Withdrawn GB2221984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8811152A GB2221984A (en) 1988-05-11 1988-05-11 Optical detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8811152A GB2221984A (en) 1988-05-11 1988-05-11 Optical detector

Publications (2)

Publication Number Publication Date
GB8811152D0 true GB8811152D0 (en) 1988-06-15
GB2221984A GB2221984A (en) 1990-02-21

Family

ID=10636726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8811152A Withdrawn GB2221984A (en) 1988-05-11 1988-05-11 Optical detector

Country Status (1)

Country Link
GB (1) GB2221984A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9215757D0 (en) * 1992-07-24 1992-09-09 Bridisco Ltd A pir sensor device
GB2345130A (en) * 1998-12-22 2000-06-28 Pyronix Ltd Intruder sensor housing
GB2352106A (en) * 1999-07-14 2001-01-17 David John Matthews Direction-sensitive warning panel
GB2402532B (en) * 2004-04-15 2005-06-01 Mark Anthony Wheatley Sensor cover

Family Cites Families (9)

* 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
US4442359A (en) * 1982-03-01 1984-04-10 Detection Systems, Inc. Multiple field-of-view optical system
US4604524A (en) * 1984-10-11 1986-08-05 Yaacov Kotlicki Passive infra-red sensor
US4625115A (en) * 1984-12-11 1986-11-25 American District Telegraph Company Ceiling mountable passive infrared intrusion detection system
CH667744A5 (en) * 1985-05-24 1988-10-31 Cerberus Ag INFRARED INTRUSION DETECTOR.
GB8522086D0 (en) * 1985-09-05 1985-10-09 Maximal Security Products Ltd Infra-red detector system
US4703171A (en) * 1985-11-05 1987-10-27 Target Concepts Inc. Lighting control system with infrared occupancy detector
AU580898B2 (en) * 1986-02-25 1989-02-02 Matsushita Electric Works Ltd. Infrared detector
US4772797A (en) * 1986-09-08 1988-09-20 Cerberus Ag Ceiling mounted passive infrared intrusion detector with prismatic window

Also Published As

Publication number Publication date
GB2221984A (en) 1990-02-21

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)