GB2354834B - Read/Write optical structure - Google Patents

Read/Write optical structure

Info

Publication number
GB2354834B
GB2354834B GB9923167A GB9923167A GB2354834B GB 2354834 B GB2354834 B GB 2354834B GB 9923167 A GB9923167 A GB 9923167A GB 9923167 A GB9923167 A GB 9923167A GB 2354834 B GB2354834 B GB 2354834B
Authority
GB
United Kingdom
Prior art keywords
read
optical structure
write optical
write
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
GB9923167A
Other versions
GB9923167D0 (en
GB2354834A (en
Inventor
Ian James Forster
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.)
Marconi Caswell Ltd
AB Dick Holdings Ltd
Marconi Data Systems Ltd
Marconi UK Intellectual Property Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconi Caswell Ltd
Marconi Electronic Systems Ltd
AB Dick Holdings Ltd
Marconi Data Systems Ltd
Marconi UK Intellectual Property 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 Marconi Caswell Ltd, Marconi Electronic Systems Ltd, AB Dick Holdings Ltd, Marconi Data Systems Ltd, Marconi UK Intellectual Property Ltd filed Critical Marconi Caswell Ltd
Priority to GB9923167A priority Critical patent/GB2354834B/en
Publication of GB9923167D0 publication Critical patent/GB9923167D0/en
Publication of GB2354834A publication Critical patent/GB2354834A/en
Application granted granted Critical
Publication of GB2354834B publication Critical patent/GB2354834B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G02F1/132—Thermal activation of liquid crystals exhibiting a thermo-optic effect
    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G02F1/13318—Circuits comprising a photodetector
    • 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
    • G02F1/133362—Optically addressed liquid crystal cells
    • 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
    • G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/02—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3603—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals with thermally addressed liquid crystals

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Liquid Crystal (AREA)
GB9923167A 1999-09-30 1999-09-30 Read/Write optical structure Expired - Fee Related GB2354834B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9923167A GB2354834B (en) 1999-09-30 1999-09-30 Read/Write optical structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9923167A GB2354834B (en) 1999-09-30 1999-09-30 Read/Write optical structure

Publications (3)

Publication Number Publication Date
GB9923167D0 GB9923167D0 (en) 1999-12-01
GB2354834A GB2354834A (en) 2001-04-04
GB2354834B true GB2354834B (en) 2004-02-11

Family

ID=10861902

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9923167A Expired - Fee Related GB2354834B (en) 1999-09-30 1999-09-30 Read/Write optical structure

Country Status (1)

Country Link
GB (1) GB2354834B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8488428B2 (en) 2008-05-14 2013-07-16 Nbcuniversal Media, Llc Enhanced security of optical article
CN109932850A (en) * 2018-03-29 2019-06-25 京东方科技集团股份有限公司 Electronic switch and remote-control key
CN111247480A (en) * 2017-11-06 2020-06-05 苹果公司 Electronic device with switchable diffuser

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7275040B2 (en) 2002-09-12 2007-09-25 Mineral Lassen Llc RFID security device for optical disc
JP2007526590A (en) 2003-06-23 2007-09-13 ケストレル ワイヤレス，インク． Optical media operating method and apparatus
US7653919B2 (en) * 2005-11-21 2010-01-26 General Electric Company Optical article having anti-theft feature and a system and method for inhibiting theft of same
US20070116988A1 (en) 2005-11-21 2007-05-24 Wisnudel Marc B Optical article having anti-theft feature and a system and method for inhibiting theft of same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210703A (en) * 1987-10-06 1989-06-14 Gen Electric Co Plc Optical storage device
EP0395113A2 (en) * 1989-04-27 1990-10-31 Seiko Instruments Inc. Laser writing type liquid crystal light valve
US5805330A (en) * 1996-03-15 1998-09-08 Gentex Corporation Electro-optic window incorporating a discrete photovoltaic device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2210703A (en) * 1987-10-06 1989-06-14 Gen Electric Co Plc Optical storage device
EP0395113A2 (en) * 1989-04-27 1990-10-31 Seiko Instruments Inc. Laser writing type liquid crystal light valve
US5805330A (en) * 1996-03-15 1998-09-08 Gentex Corporation Electro-optic window incorporating a discrete photovoltaic device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8488428B2 (en) 2008-05-14 2013-07-16 Nbcuniversal Media, Llc Enhanced security of optical article
CN111247480A (en) * 2017-11-06 2020-06-05 苹果公司 Electronic device with switchable diffuser
CN111247480B (en) * 2017-11-06 2022-12-20 苹果公司 Electronic device with switchable diffuser
CN109932850A (en) * 2018-03-29 2019-06-25 京东方科技集团股份有限公司 Electronic switch and remote-control key
CN109932850B (en) * 2018-03-29 2022-06-03 京东方科技集团股份有限公司 Electronic switch and remote control key

Also Published As

Publication number Publication date
GB9923167D0 (en) 1999-12-01
GB2354834A (en) 2001-04-04

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Legal Events

Date Code Title Description
COOA Change in applicant's name or ownership of the application
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: 20040511