GB2218606B - Wavelength selective filter - Google Patents

Wavelength selective filter

Info

Publication number
GB2218606B
GB2218606B GB8718622A GB8718622A GB2218606B GB 2218606 B GB2218606 B GB 2218606B GB 8718622 A GB8718622 A GB 8718622A GB 8718622 A GB8718622 A GB 8718622A GB 2218606 B GB2218606 B GB 2218606B
Authority
GB
United Kingdom
Prior art keywords
wavelength selective
selective filter
filter
wavelength
selective
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
GB8718622A
Other versions
GB2218606A (en
GB8718622D0 (en
Inventor
Stanley William Warren
David Robert Brock
Michael John Taylor
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
Original Assignee
STC PLC
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 filed Critical STC PLC
Priority to GB8718622A priority Critical patent/GB2218606B/en
Publication of GB8718622D0 publication Critical patent/GB8718622D0/en
Publication of GB2218606A publication Critical patent/GB2218606A/en
Application granted granted Critical
Publication of GB2218606B publication Critical patent/GB2218606B/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
    • G02B5/20—Filters
    • G02B5/207—Filters comprising semiconducting materials
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/28—Interference filters
    • G02B5/281—Interference filters designed for the infrared light

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Filters (AREA)
GB8718622A 1987-08-06 1987-08-06 Wavelength selective filter Expired - Fee Related GB2218606B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8718622A GB2218606B (en) 1987-08-06 1987-08-06 Wavelength selective filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8718622A GB2218606B (en) 1987-08-06 1987-08-06 Wavelength selective filter

Publications (3)

Publication Number Publication Date
GB8718622D0 GB8718622D0 (en) 1989-09-20
GB2218606A GB2218606A (en) 1989-11-22
GB2218606B true GB2218606B (en) 1991-01-30

Family

ID=10621901

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8718622A Expired - Fee Related GB2218606B (en) 1987-08-06 1987-08-06 Wavelength selective filter

Country Status (1)

Country Link
GB (1) GB2218606B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT401322B (en) * 1994-08-09 1996-08-26 Siemens Ag Oesterreich TRANSMISSION SYSTEM WITH INDEPENDENT OPTICAL TRANSMISSION LINKS
AT404529B (en) * 1994-08-09 1998-12-28 Siemens Ag Oesterreich TRANSMISSION SYSTEM WITH OPTICAL TRANSMISSION RANGE IN THE SPACE

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB909514A (en) * 1957-11-06 1962-10-31 Philips Electrical Ind Ltd Improvements in devices for measuring and detecting radiation
GB1014230A (en) * 1953-10-26 1965-12-22 Mullard Radio Valve Co Ltd Improvements in or relating to optical filters
GB1014229A (en) * 1955-08-19 1965-12-22 Mullard Radio Valve Co Ltd Improvements in and relating to devices comprising a layer of semi-conductive material
GB1180314A (en) * 1967-04-18 1970-02-04 Siemens Ag Process for the Production of Gallium Arsenide
EP0030792A2 (en) * 1979-11-20 1981-06-24 National Research Development Corporation Infra red reflectors
GB2065916A (en) * 1979-11-30 1981-07-01 Kureha Chemical Ind Co Ltd Infrared condensing lenses
GB2090425A (en) * 1980-12-03 1982-07-07 Cerberus Ag Narrow band ir filter for co2 detector
EP0093672A2 (en) * 1982-05-03 1983-11-09 Saint Gobain Vitrage International Deposition of a doped semiconducteur layer on a substrate in order to form a selective reflexion layer
GB2182165A (en) * 1985-10-23 1987-05-07 Ici Plc Trichromatic colour filter comprising a substituted phthalocyanine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1014230A (en) * 1953-10-26 1965-12-22 Mullard Radio Valve Co Ltd Improvements in or relating to optical filters
GB1014229A (en) * 1955-08-19 1965-12-22 Mullard Radio Valve Co Ltd Improvements in and relating to devices comprising a layer of semi-conductive material
GB909514A (en) * 1957-11-06 1962-10-31 Philips Electrical Ind Ltd Improvements in devices for measuring and detecting radiation
GB1180314A (en) * 1967-04-18 1970-02-04 Siemens Ag Process for the Production of Gallium Arsenide
EP0030792A2 (en) * 1979-11-20 1981-06-24 National Research Development Corporation Infra red reflectors
GB2065916A (en) * 1979-11-30 1981-07-01 Kureha Chemical Ind Co Ltd Infrared condensing lenses
GB2090425A (en) * 1980-12-03 1982-07-07 Cerberus Ag Narrow band ir filter for co2 detector
EP0093672A2 (en) * 1982-05-03 1983-11-09 Saint Gobain Vitrage International Deposition of a doped semiconducteur layer on a substrate in order to form a selective reflexion layer
GB2182165A (en) * 1985-10-23 1987-05-07 Ici Plc Trichromatic colour filter comprising a substituted phthalocyanine

Also Published As

Publication number Publication date
GB2218606A (en) 1989-11-22
GB8718622D0 (en) 1989-09-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee