WO2007015730A3 - Digitally-switchable bandpass filter - Google Patents

Digitally-switchable bandpass filter Download PDF

Info

Publication number
WO2007015730A3
WO2007015730A3 PCT/US2006/025487 US2006025487W WO2007015730A3 WO 2007015730 A3 WO2007015730 A3 WO 2007015730A3 US 2006025487 W US2006025487 W US 2006025487W WO 2007015730 A3 WO2007015730 A3 WO 2007015730A3
Authority
WO
WIPO (PCT)
Prior art keywords
digitally
switchable
disclosed
bandpass filter
switchable bandpass
Prior art date
Application number
PCT/US2006/025487
Other languages
French (fr)
Other versions
WO2007015730A2 (en
Inventor
Gary D Sharp
Original Assignee
Colorlink Inc
Gary D Sharp
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 Colorlink Inc, Gary D Sharp filed Critical Colorlink Inc
Priority to JP2008524971A priority Critical patent/JP2009503608A/en
Priority to EP06785915A priority patent/EP1929358A4/en
Publication of WO2007015730A2 publication Critical patent/WO2007015730A2/en
Publication of WO2007015730A3 publication Critical patent/WO2007015730A3/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 
    • G02F1/13—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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • 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
    • G02F1/133528—Polarisers
    • 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
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • G02F1/13473—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells for wavelength filtering or for colour display without the use of colour mosaic filters
    • 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
    • G02F2203/05—Function characteristic wavelength dependent
    • G02F2203/055—Function characteristic wavelength dependent wavelength filtering
    • 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
    • G02F2413/00—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates
    • G02F2413/08—Indexing scheme related to G02F1/13363, i.e. to birefringent elements, e.g. for optical compensation, characterised by the number, position, orientation or value of the compensation plates with a particular optical axis orientation

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Micro-Organisms Or Cultivation Processes Thereof (AREA)

Abstract

Disclosed are digitally-switchable bandpass filters combining non-tunable retarder stacks with switchable liquid crystal cells. The disclosed filter embodiments function like a filter wheel with no moving parts that may provide faster switching, better image registration, compact size, and lower electrical power consumption. These benefits are attractive in portable handheld devices, such as bio-hazard sensors or glucose monitors.
PCT/US2006/025487 2005-08-01 2006-06-28 Digitally-switchable bandpass filter WO2007015730A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008524971A JP2009503608A (en) 2005-08-01 2006-06-28 Digitally switchable bandpass filter
EP06785915A EP1929358A4 (en) 2005-08-01 2006-06-28 Digitally-switchable bandpass filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/161,376 2005-08-01
US11/161,376 US7692746B2 (en) 2005-08-01 2005-08-01 Digitally-switchable bandpass filter

Publications (2)

Publication Number Publication Date
WO2007015730A2 WO2007015730A2 (en) 2007-02-08
WO2007015730A3 true WO2007015730A3 (en) 2008-12-24

Family

ID=37693896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/025487 WO2007015730A2 (en) 2005-08-01 2006-06-28 Digitally-switchable bandpass filter

Country Status (4)

Country Link
US (1) US7692746B2 (en)
EP (1) EP1929358A4 (en)
JP (1) JP2009503608A (en)
WO (1) WO2007015730A2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007038410A2 (en) * 2005-09-27 2007-04-05 Chemimage Corporation Liquid crystal filter with tunable rejection band
US7859753B2 (en) * 2005-12-21 2010-12-28 Chem Image Corporation Optical birefringence filters with interleaved absorptive and zero degree reflective polarizers
US7848000B2 (en) * 2006-01-09 2010-12-07 Chemimage Corporation Birefringent spectral filter with wide field of view and associated communications method and apparatus
US7417796B2 (en) * 2006-09-29 2008-08-26 Chemimage Corporation Wavelength discrimination filter for infrared wavelengths
TWI648561B (en) * 2012-07-16 2019-01-21 美商唯亞威方案公司 Optical filter and sensor system
JP6894909B2 (en) * 2015-10-23 2021-06-30 ディー シャープ、ゲイリー Optical filter with color enhancement
US10965842B2 (en) 2016-05-10 2021-03-30 Raytheon Company Anti-dazzle imaging camera and method
US10866429B2 (en) 2017-01-24 2020-12-15 Gary Sharp Innovations, Llc Tunable color enhancement filter
CN110892309B (en) 2017-03-08 2022-11-22 加里夏普创新有限责任公司 Wide-angle variable neutral density filter
US10761391B2 (en) 2017-05-23 2020-09-01 The United States Of America As Represented By The Secretary Of The Air Force Optical attenuator
US11294113B2 (en) 2017-07-17 2022-04-05 Gary Sharp Innovations, Llc Wide-angle compensation of uniaxial retarder stacks
US11249355B2 (en) 2018-01-29 2022-02-15 Gary Sharp Innovations, Llc Color switch for reduced color cross-talk
AU2019211498A1 (en) 2018-01-29 2020-08-20 Gary Sharp Innovations, Inc. Hollow triple-pass optical elements
CN115685432A (en) 2018-03-02 2023-02-03 加里夏普创新有限责任公司 Retarder stack pair for polarization basis vector conversion
CN110824599B (en) 2018-08-14 2021-09-03 白金科技股份有限公司 Infrared band-pass filter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5751384A (en) * 1995-05-23 1998-05-12 The Board Of Regents Of The University Of Colorado Color polarizers for polarizing an additive color spectrum along a first axis and it's compliment along a second axis

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JPH04116603A (en) 1990-09-07 1992-04-17 Casio Comput Co Ltd Phase difference element
US5365535A (en) * 1992-01-13 1994-11-15 Canon Kabushiki Kaisha Semiconductor laser and beam splitting devices, and optical information recording/reproducing, optical communication, and optomagnetic recording/reproducing apparatuses using semiconductor laser and beam splitting devices
US5764365A (en) * 1993-11-09 1998-06-09 Nova Measuring Instruments, Ltd. Two-dimensional beam deflector
EP0686298B1 (en) * 1993-12-23 2000-05-17 Thomson-Csf Optical method and system for reading/writing data on a recording medium
US5999240A (en) * 1995-05-23 1999-12-07 Colorlink, Inc. Optical retarder stack pair for transforming input light into polarization states having saturated color spectra
US6882384B1 (en) * 1995-05-23 2005-04-19 Colorlink, Inc. Color filters and sequencers using color selective light modulators
US5658490A (en) * 1995-04-07 1997-08-19 Board Of Regents Of The University Of Colorado Liquid crystal achromatic compound retarder
US6417892B1 (en) * 1995-05-23 2002-07-09 Colorlink, Inc. Color filters, sequencers and displays using color selective light modulators
US6141071A (en) * 1995-10-30 2000-10-31 Colorlink, Inc. Switchable achromatic polarization rotator
JPH1068816A (en) 1996-08-29 1998-03-10 Sharp Corp Phase difference plate and circularly polarizing plate
US6222812B1 (en) * 1996-08-29 2001-04-24 Samsung Electronics Co., Ltd. Optical pickup using an optical phase plate
GB2318878A (en) * 1996-10-31 1998-05-06 Sharp Kk Reflective liquid crystal device
US5892559A (en) * 1996-11-25 1999-04-06 Colorlink, Inc. Chromaticity compensating liquid crystal filter
US6304540B1 (en) * 1998-03-30 2001-10-16 Samsung Electronics Co., Ltd. Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
TW342493B (en) * 1997-04-29 1998-10-11 Ind Tech Res Inst Digital video disc (DVD) optical head with dual-wavelength laser
US6134011A (en) * 1997-09-22 2000-10-17 Hdi Instrumentation Optical measurement system using polarized light
US6100944A (en) * 1997-10-10 2000-08-08 Boulder Nonlinear Systems, Inc. Polarizing interferometer using multiorder and zero order birefringence switches
TW336311B (en) * 1997-10-15 1998-07-11 Ind Tech Res Inst Method and device for focusing and tracking of an optical head
GB2335755A (en) * 1998-03-26 1999-09-29 Sharp Kk Liquid crystal device
JP3325560B2 (en) * 1998-10-30 2002-09-17 帝人株式会社 Retardation film and optical device using the same
ATE363122T1 (en) * 1999-01-22 2007-06-15 Konica Minolta Opto Inc OPTICAL SCANNING DEVICE FOR INFORMATION RECORDING AND REPRODUCTION
JP3923689B2 (en) * 1999-09-30 2007-06-06 株式会社東芝 Color shutter and color image display method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5751384A (en) * 1995-05-23 1998-05-12 The Board Of Regents Of The University Of Colorado Color polarizers for polarizing an additive color spectrum along a first axis and it's compliment along a second axis

Also Published As

Publication number Publication date
WO2007015730A2 (en) 2007-02-08
US7692746B2 (en) 2010-04-06
EP1929358A4 (en) 2009-09-02
EP1929358A2 (en) 2008-06-11
US20070024779A1 (en) 2007-02-01
JP2009503608A (en) 2009-01-29

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