WO2000072079A3 - Electro-optic devices - Google Patents

Electro-optic devices Download PDF

Info

Publication number
WO2000072079A3
WO2000072079A3 PCT/GB2000/001979 GB0001979W WO0072079A3 WO 2000072079 A3 WO2000072079 A3 WO 2000072079A3 GB 0001979 W GB0001979 W GB 0001979W WO 0072079 A3 WO0072079 A3 WO 0072079A3
Authority
WO
WIPO (PCT)
Prior art keywords
electro
cells
path
optic devices
polarised
Prior art date
Application number
PCT/GB2000/001979
Other languages
French (fr)
Other versions
WO2000072079A2 (en
Inventor
Simon Howard Spencer
William Philip Pritchard
Original Assignee
Marconi Applied Techn Ltd
Simon Howard Spencer
William Philip Pritchard
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 Applied Techn Ltd, Simon Howard Spencer, William Philip Pritchard filed Critical Marconi Applied Techn Ltd
Priority to EP00935314A priority Critical patent/EP1185899A2/en
Priority to JP2000620410A priority patent/JP2003500693A/en
Publication of WO2000072079A2 publication Critical patent/WO2000072079A2/en
Publication of WO2000072079A3 publication Critical patent/WO2000072079A3/en

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 
    • G02F1/03—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 ceramics or electro-optical crystals, e.g. exhibiting Pockels effect or Kerr effect
    • G02F1/0305—Constructional arrangements
    • G02F1/0311—Structural association of optical elements, e.g. lenses, polarizers, phase plates, with the crystal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • 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
    • G02B27/283—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising used for beam splitting or combining
    • 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
    • G02F2203/00—Function characteristic
    • G02F2203/48—Variable attenuator

Abstract

An electro-optic device includes a polarising beam splitter (1) wihch sends a polarised component along a first path via birefringent cells (C1 and C2) and a differently polarised component via a second path through cells (C3 and C4). The two components are combined at 8 and the output directed onto a CCD sensor (9). The modulator has high transmission characteristic and allows faster switching. In one embodiment, the device is used to view differently polarised light from a scene.
PCT/GB2000/001979 1999-05-24 2000-05-24 Electro-optic devices WO2000072079A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP00935314A EP1185899A2 (en) 1999-05-24 2000-05-24 Electro-optic devices
JP2000620410A JP2003500693A (en) 1999-05-24 2000-05-24 Electro-optic device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9912072.7A GB9912072D0 (en) 1999-05-24 1999-05-24 Electro-optic devices
GB9912072.7 1999-05-24

Publications (2)

Publication Number Publication Date
WO2000072079A2 WO2000072079A2 (en) 2000-11-30
WO2000072079A3 true WO2000072079A3 (en) 2001-12-13

Family

ID=10854069

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/001979 WO2000072079A2 (en) 1999-05-24 2000-05-24 Electro-optic devices

Country Status (4)

Country Link
EP (1) EP1185899A2 (en)
JP (1) JP2003500693A (en)
GB (2) GB9912072D0 (en)
WO (1) WO2000072079A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9268373B2 (en) 2012-03-02 2016-02-23 Microsoft Technology Licensing, Llc Flexible hinge spine
US9275809B2 (en) 2012-03-02 2016-03-01 Microsoft Technology Licensing, Llc Device camera angle
US9544504B2 (en) 2012-11-02 2017-01-10 Microsoft Technology Licensing, Llc Rapid synchronized lighting and shuttering

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008158535A (en) * 2008-01-10 2008-07-10 Mitsubishi Electric Corp Imaging apparatus
US9870066B2 (en) 2012-03-02 2018-01-16 Microsoft Technology Licensing, Llc Method of manufacturing an input device
US20130300590A1 (en) 2012-05-14 2013-11-14 Paul Henry Dietz Audio Feedback
WO2017174392A1 (en) 2016-04-04 2017-10-12 SMR Patents S.à.r.l. Imaging system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH500501A (en) * 1968-09-11 1970-12-15 Atomic Energy Commission Electro-optical device with a ferroelectric ceramic plate
US4335939A (en) * 1979-04-09 1982-06-22 Crosfield Electronics Limited Optical modulators and apparatus including such modulators
US4439014A (en) * 1981-11-13 1984-03-27 Mcdonnell Douglas Corporation Low voltage electro-optic modulator
US4919522A (en) * 1988-02-25 1990-04-24 Geo-Centers, Inc. Optical switch having birefringent element
US5305136A (en) * 1992-03-31 1994-04-19 Geo-Centers, Inc. Optically bidirectional fast optical switch having reduced light loss
JPH08250692A (en) * 1995-03-10 1996-09-27 Sharp Corp Optical device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3684350A (en) * 1970-08-17 1972-08-15 Westinghouse Electric Corp Light beam polarization modulator
US3719414A (en) * 1970-08-28 1973-03-06 Westinghouse Electric Corp Polarization independent light modulation means using birefringent crystals
GB1409711A (en) * 1971-06-08 1975-10-15 Redifon Ltd Optical systems
JPS6083013A (en) * 1983-10-12 1985-05-11 Yokogawa Hokushin Electric Corp Image switch
JPS61151515A (en) * 1984-12-26 1986-07-10 Agency Of Ind Science & Technol Optical gate device
WO1999067679A2 (en) * 1998-04-08 1999-12-29 Corning Applied Technologies High-speed electro-optic modulator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH500501A (en) * 1968-09-11 1970-12-15 Atomic Energy Commission Electro-optical device with a ferroelectric ceramic plate
US4335939A (en) * 1979-04-09 1982-06-22 Crosfield Electronics Limited Optical modulators and apparatus including such modulators
US4439014A (en) * 1981-11-13 1984-03-27 Mcdonnell Douglas Corporation Low voltage electro-optic modulator
US4919522A (en) * 1988-02-25 1990-04-24 Geo-Centers, Inc. Optical switch having birefringent element
US5305136A (en) * 1992-03-31 1994-04-19 Geo-Centers, Inc. Optically bidirectional fast optical switch having reduced light loss
JPH08250692A (en) * 1995-03-10 1996-09-27 Sharp Corp Optical device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 1 31 January 1997 (1997-01-31) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9268373B2 (en) 2012-03-02 2016-02-23 Microsoft Technology Licensing, Llc Flexible hinge spine
US9275809B2 (en) 2012-03-02 2016-03-01 Microsoft Technology Licensing, Llc Device camera angle
US9465412B2 (en) 2012-03-02 2016-10-11 Microsoft Technology Licensing, Llc Input device layers and nesting
US9544504B2 (en) 2012-11-02 2017-01-10 Microsoft Technology Licensing, Llc Rapid synchronized lighting and shuttering

Also Published As

Publication number Publication date
EP1185899A2 (en) 2002-03-13
GB2351356A (en) 2000-12-27
GB0012655D0 (en) 2000-07-12
WO2000072079A2 (en) 2000-11-30
GB9912072D0 (en) 1999-07-21
JP2003500693A (en) 2003-01-07

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