GB2236854B - Optical sensors - Google Patents

Optical sensors

Info

Publication number
GB2236854B
GB2236854B GB8923214A GB8923214A GB2236854B GB 2236854 B GB2236854 B GB 2236854B GB 8923214 A GB8923214 A GB 8923214A GB 8923214 A GB8923214 A GB 8923214A GB 2236854 B GB2236854 B GB 2236854B
Authority
GB
United Kingdom
Prior art keywords
optical sensors
sensors
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.)
Expired - Fee Related
Application number
GB8923214A
Other versions
GB8923214D0 (en
GB2236854A (en
Inventor
Colin Dougal Mcewen
James Mark Naden
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.)
STC PLC
Nortel Networks Optical Components Ltd
Original Assignee
STC PLC
Northern Telecom Europe 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 STC PLC, Northern Telecom Europe Ltd filed Critical STC PLC
Priority to GB8923214A priority Critical patent/GB2236854B/en
Publication of GB8923214D0 publication Critical patent/GB8923214D0/en
Publication of GB2236854A publication Critical patent/GB2236854A/en
Application granted granted Critical
Publication of GB2236854B publication Critical patent/GB2236854B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Transform (AREA)
GB8923214A 1989-10-14 1989-10-14 Optical sensors Expired - Fee Related GB2236854B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8923214A GB2236854B (en) 1989-10-14 1989-10-14 Optical sensors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8923214A GB2236854B (en) 1989-10-14 1989-10-14 Optical sensors

Publications (3)

Publication Number Publication Date
GB8923214D0 GB8923214D0 (en) 1989-11-29
GB2236854A GB2236854A (en) 1991-04-17
GB2236854B true GB2236854B (en) 1993-05-26

Family

ID=10664617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8923214A Expired - Fee Related GB2236854B (en) 1989-10-14 1989-10-14 Optical sensors

Country Status (1)

Country Link
GB (1) GB2236854B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697910B1 (en) * 1992-11-09 1995-01-13 Onera (Off Nat Aerospatiale) Device for measuring a physical quantity by time coding.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161931A (en) * 1984-07-17 1986-01-22 Stc Plc Remote sensor systems
GB2194054A (en) * 1986-08-15 1988-02-24 Gen Electric Co Plc Magnetometer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161931A (en) * 1984-07-17 1986-01-22 Stc Plc Remote sensor systems
GB2194054A (en) * 1986-08-15 1988-02-24 Gen Electric Co Plc Magnetometer

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
APPL.PHYS.LETT.31 (10) 675-6 (1977) *
ELECT. LETT. 24 (14) 833-4 (1988) *

Also Published As

Publication number Publication date
GB8923214D0 (en) 1989-11-29
GB2236854A (en) 1991-04-17

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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: 19931014