AU2001263060A1 - Electronically variable light attenuator - Google Patents

Electronically variable light attenuator

Info

Publication number
AU2001263060A1
AU2001263060A1 AU2001263060A AU6306001A AU2001263060A1 AU 2001263060 A1 AU2001263060 A1 AU 2001263060A1 AU 2001263060 A AU2001263060 A AU 2001263060A AU 6306001 A AU6306001 A AU 6306001A AU 2001263060 A1 AU2001263060 A1 AU 2001263060A1
Authority
AU
Australia
Prior art keywords
variable light
light attenuator
electronically variable
electronically
attenuator
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.)
Abandoned
Application number
AU2001263060A
Inventor
David L. Corkum
Michael Holz
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.)
Raytheon Co
Original Assignee
Raytheon Co
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 Raytheon Co filed Critical Raytheon Co
Publication of AU2001263060A1 publication Critical patent/AU2001263060A1/en
Abandoned 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
    • G02F1/1326—Liquid crystal optical waveguides or liquid crystal cells specially adapted for gating or modulating between optical waveguides
    • 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/292—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 position or the direction of light beams, i.e. deflection by controlled diffraction or phased-array beam steering
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
    • G02F1/133757—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different alignment orientations
    • 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
    • G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
    • G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
    • G02F1/1393—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the birefringence of the liquid crystal being electrically controlled, e.g. ECB-, DAP-, HAN-, PI-LC 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
    • G02F1/29—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 position or the direction of light beams, i.e. deflection
    • G02F1/295—Analog deflection from or in an optical waveguide structure]
    • G02F1/2955—Analog deflection from or in an optical waveguide structure] by controlled diffraction or phased-array beam steering
    • 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
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/30—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating
    • G02F2201/305—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00 grating diffraction grating
    • 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
    • G02F2203/22—Function characteristic diffractive
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
AU2001263060A 2000-05-18 2001-05-11 Electronically variable light attenuator Abandoned AU2001263060A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/574,357 US6525860B1 (en) 2000-05-18 2000-05-18 Electronically variable light attenuator
US09574357 2000-05-18
PCT/US2001/015256 WO2001088606A1 (en) 2000-05-18 2001-05-11 Electronically variable light attenuator

Publications (1)

Publication Number Publication Date
AU2001263060A1 true AU2001263060A1 (en) 2001-11-26

Family

ID=24295759

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2001263060A Abandoned AU2001263060A1 (en) 2000-05-18 2001-05-11 Electronically variable light attenuator

Country Status (5)

Country Link
US (1) US6525860B1 (en)
EP (1) EP1285307A1 (en)
JP (1) JP5236853B2 (en)
AU (1) AU2001263060A1 (en)
WO (1) WO2001088606A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7116862B1 (en) 2000-12-22 2006-10-03 Cheetah Omni, Llc Apparatus and method for providing gain equalization
US6445502B1 (en) 2001-02-02 2002-09-03 Celeste Optics, Inc. Variable blazed grating
US7145704B1 (en) * 2003-11-25 2006-12-05 Cheetah Omni, Llc Optical logic gate based optical router
US7162136B1 (en) 2004-12-22 2007-01-09 West Virginia University Non-circular, mechanically variable optical attenuator
WO2007000713A1 (en) * 2005-06-29 2007-01-04 Koninklijke Philips Electronics, N.V. High resolution interference-based liquid crystal projection/display system
US7429983B2 (en) 2005-11-01 2008-09-30 Cheetah Omni, Llc Packet-based digital display system
US8089677B2 (en) * 2008-06-08 2012-01-03 The United States of America as represented by the Administrator of the National Aeuronautics and Space Administration Dynamic optical grating device and associated method for modulating light
FR3015704B1 (en) * 2013-12-20 2019-09-13 Valeo Etudes Electroniques IMAGE PROJECTION SYSTEM AND METHOD AND DISPLAY USING THE SAME

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2541784B1 (en) * 1983-02-25 1986-05-16 Thomson Csf DEVICE FOR STATIC DEFLECTION OF AN INFRARED BEAM
JPS61193122A (en) * 1985-02-21 1986-08-27 Canon Inc Optical modulating equipment
US4878742A (en) 1986-08-04 1989-11-07 Canon Kabushiki Kaisha Liquid crystal optical modulator
JP2551025B2 (en) * 1987-09-17 1996-11-06 キヤノン株式会社 Liquid crystal light modulator
US5253033A (en) 1990-12-03 1993-10-12 Raytheon Company Laser radar system with phased-array beam steerer
FR2679048B1 (en) 1991-07-12 1994-11-04 Thomson Csf ELECTROOPTIC MODULATOR.
JP3456493B2 (en) * 1992-10-24 2003-10-14 ソニー株式会社 Liquid crystal element
JPH06235943A (en) * 1993-02-08 1994-08-23 Ricoh Co Ltd Light switch
JP3163887B2 (en) * 1993-04-23 2001-05-08 松下電器産業株式会社 Projection display device
JP3412775B2 (en) * 1994-09-13 2003-06-03 富士通ディスプレイテクノロジーズ株式会社 Liquid crystal element
US5825448A (en) 1995-05-19 1998-10-20 Kent State University Reflective optically active diffractive device
US5807498A (en) * 1996-03-29 1998-09-15 Alliant Techsystems Inc. Process and materials for aligning liquid crystals and liquid crystal optical elements
JP3560805B2 (en) * 1998-03-20 2004-09-02 パイオニア株式会社 Optical pickup
US6618104B1 (en) * 1998-07-28 2003-09-09 Nippon Telegraph And Telephone Corporation Optical device having reverse mode holographic PDLC and front light guide

Also Published As

Publication number Publication date
JP2003533735A (en) 2003-11-11
EP1285307A1 (en) 2003-02-26
JP5236853B2 (en) 2013-07-17
WO2001088606A1 (en) 2001-11-22
US6525860B1 (en) 2003-02-25

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