GB2223324B - Optical filters - Google Patents

Optical filters

Info

Publication number
GB2223324B
GB2223324B GB8823078A GB8823078A GB2223324B GB 2223324 B GB2223324 B GB 2223324B GB 8823078 A GB8823078 A GB 8823078A GB 8823078 A GB8823078 A GB 8823078A GB 2223324 B GB2223324 B GB 2223324B
Authority
GB
United Kingdom
Prior art keywords
optical filters
filters
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 - Lifetime
Application number
GB8823078A
Other versions
GB8823078D0 (en
GB2223324A (en
Inventor
Stephen Day
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 GB8823078A priority Critical patent/GB2223324B/en
Publication of GB8823078D0 publication Critical patent/GB8823078D0/en
Publication of GB2223324A publication Critical patent/GB2223324A/en
Application granted granted Critical
Publication of GB2223324B publication Critical patent/GB2223324B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
    • G02B27/288—Filters employing polarising elements, e.g. Lyot or Solc filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/284—Interference filters of etalon type comprising a resonant cavity other than a thin solid film, e.g. gas, air, solid plates

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Optical Filters (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
GB8823078A 1988-09-30 1988-09-30 Optical filters Expired - Lifetime GB2223324B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8823078A GB2223324B (en) 1988-09-30 1988-09-30 Optical filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8823078A GB2223324B (en) 1988-09-30 1988-09-30 Optical filters

Publications (3)

Publication Number Publication Date
GB8823078D0 GB8823078D0 (en) 1988-11-09
GB2223324A GB2223324A (en) 1990-04-04
GB2223324B true GB2223324B (en) 1992-06-17

Family

ID=10644577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8823078A Expired - Lifetime GB2223324B (en) 1988-09-30 1988-09-30 Optical filters

Country Status (1)

Country Link
GB (1) GB2223324B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3903019A1 (en) * 1989-02-02 1990-08-09 Hell Rudolf Dr Ing Gmbh OPTICAL COLOR DIVIDER ARRANGEMENT
GB2254710B (en) * 1991-04-12 1994-01-26 Northern Telecom Europ Ltd Fabry-perot optical filters

Also Published As

Publication number Publication date
GB8823078D0 (en) 1988-11-09
GB2223324A (en) 1990-04-04

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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)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
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: 20040930