GB2233470B - Infra-red beacon - Google Patents

Infra-red beacon

Info

Publication number
GB2233470B
GB2233470B GB8914513A GB8914513A GB2233470B GB 2233470 B GB2233470 B GB 2233470B GB 8914513 A GB8914513 A GB 8914513A GB 8914513 A GB8914513 A GB 8914513A GB 2233470 B GB2233470 B GB 2233470B
Authority
GB
United Kingdom
Prior art keywords
infra
red beacon
beacon
red
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 - Fee Related
Application number
GB8914513A
Other versions
GB8914513D0 (en
GB2233470A (en
Inventor
Ian Hunter
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.)
BAE Systems Electronics Ltd
Original Assignee
GEC Marconi Ltd
Marconi Co Ltd
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 GEC Marconi Ltd, Marconi Co Ltd filed Critical GEC Marconi Ltd
Priority to GB8914513A priority Critical patent/GB2233470B/en
Publication of GB8914513D0 publication Critical patent/GB8914513D0/en
Publication of GB2233470A publication Critical patent/GB2233470A/en
Application granted granted Critical
Publication of GB2233470B publication Critical patent/GB2233470B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/12—Reflex reflectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Aerials With Secondary Devices (AREA)
GB8914513A 1989-06-23 1989-06-23 Infra-red beacon Expired - Fee Related GB2233470B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8914513A GB2233470B (en) 1989-06-23 1989-06-23 Infra-red beacon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8914513A GB2233470B (en) 1989-06-23 1989-06-23 Infra-red beacon

Publications (3)

Publication Number Publication Date
GB8914513D0 GB8914513D0 (en) 1989-11-08
GB2233470A GB2233470A (en) 1991-01-09
GB2233470B true GB2233470B (en) 1993-03-24

Family

ID=10658986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8914513A Expired - Fee Related GB2233470B (en) 1989-06-23 1989-06-23 Infra-red beacon

Country Status (1)

Country Link
GB (1) GB2233470B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994006046A1 (en) * 1992-09-04 1994-03-17 The Australian National University Optical reflector arrays and apparatus using such arrays

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014825A2 (en) * 1979-02-07 1980-09-03 Heimann GmbH Optical apparatus for passive infrared movement detector
FR2551586A1 (en) * 1983-09-05 1985-03-08 Plastimo Sa Radar reflector.
GB2145813A (en) * 1983-08-26 1985-04-03 Matsushita Electric Works Ltd Infrared intrusion detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014825A2 (en) * 1979-02-07 1980-09-03 Heimann GmbH Optical apparatus for passive infrared movement detector
GB2145813A (en) * 1983-08-26 1985-04-03 Matsushita Electric Works Ltd Infrared intrusion detector
FR2551586A1 (en) * 1983-09-05 1985-03-08 Plastimo Sa Radar reflector.

Also Published As

Publication number Publication date
GB8914513D0 (en) 1989-11-08
GB2233470A (en) 1991-01-09

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930624