GB2184746B - Optical filter manufacture - Google Patents

Optical filter manufacture

Info

Publication number
GB2184746B
GB2184746B GB8531289A GB8531289A GB2184746B GB 2184746 B GB2184746 B GB 2184746B GB 8531289 A GB8531289 A GB 8531289A GB 8531289 A GB8531289 A GB 8531289A GB 2184746 B GB2184746 B GB 2184746B
Authority
GB
United Kingdom
Prior art keywords
optical filter
filter manufacture
manufacture
optical
filter
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
Application number
GB8531289A
Other versions
GB8531289D0 (en
GB2184746A (en
Inventor
Barbara Needham
Christopher John Walker
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 GB8531289A priority Critical patent/GB2184746B/en
Publication of GB8531289D0 publication Critical patent/GB8531289D0/en
Publication of GB2184746A publication Critical patent/GB2184746A/en
Application granted granted Critical
Publication of GB2184746B publication Critical patent/GB2184746B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133509—Filters, e.g. light shielding masks
    • G02F1/133514—Colour filters
    • G02F1/133516—Methods for their manufacture, e.g. printing, electro-deposition or photolithography
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing
    • C25D11/24—Chemical after-treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Optical Filters (AREA)
GB8531289A 1985-12-19 1985-12-19 Optical filter manufacture Expired GB2184746B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8531289A GB2184746B (en) 1985-12-19 1985-12-19 Optical filter manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8531289A GB2184746B (en) 1985-12-19 1985-12-19 Optical filter manufacture

Publications (3)

Publication Number Publication Date
GB8531289D0 GB8531289D0 (en) 1986-01-29
GB2184746A GB2184746A (en) 1987-07-01
GB2184746B true GB2184746B (en) 1989-11-01

Family

ID=10590002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8531289A Expired GB2184746B (en) 1985-12-19 1985-12-19 Optical filter manufacture

Country Status (1)

Country Link
GB (1) GB2184746B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5116674A (en) * 1989-01-27 1992-05-26 Ciba-Geigy Corporation Composite structure
GB2250623B (en) * 1990-12-03 1994-06-15 Marconi Gec Ltd Display devices
FR2677142A1 (en) * 1991-05-30 1992-12-04 Giat Ind Sa Process for producing a coloured marking on an anodised aluminium support

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096856A1 (en) * 1982-06-15 1983-12-28 International Standard Electric Corporation Liquid crystal display

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0096856A1 (en) * 1982-06-15 1983-12-28 International Standard Electric Corporation Liquid crystal display

Also Published As

Publication number Publication date
GB8531289D0 (en) 1986-01-29
GB2184746A (en) 1987-07-01

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (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)
PE20 Patent expired after termination of 20 years

Effective date: 20051218