WO2004088362A3 - MEANS OF COMPENSATION TO INCREASE THE CONTRAST RATIO OF LCoS BASED VIDEO PROJECTION SYSTEMS - Google Patents

MEANS OF COMPENSATION TO INCREASE THE CONTRAST RATIO OF LCoS BASED VIDEO PROJECTION SYSTEMS Download PDF

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Publication number
WO2004088362A3
WO2004088362A3 PCT/US2004/009693 US2004009693W WO2004088362A3 WO 2004088362 A3 WO2004088362 A3 WO 2004088362A3 US 2004009693 W US2004009693 W US 2004009693W WO 2004088362 A3 WO2004088362 A3 WO 2004088362A3
Authority
WO
WIPO (PCT)
Prior art keywords
oriented
compensation
axis
quarter waveplate
microdisplay
Prior art date
Application number
PCT/US2004/009693
Other languages
French (fr)
Other versions
WO2004088362A2 (en
WO2004088362A9 (en
Inventor
Arthur Berman
Original Assignee
Lightmaster Systems Inc
Arthur Berman
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 Lightmaster Systems Inc, Arthur Berman filed Critical Lightmaster Systems Inc
Priority to TW093109615A priority Critical patent/TW200532319A/en
Publication of WO2004088362A2 publication Critical patent/WO2004088362A2/en
Publication of WO2004088362A9 publication Critical patent/WO2004088362A9/en
Publication of WO2004088362A3 publication Critical patent/WO2004088362A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/12—Picture reproducers
    • H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
    • H04N9/3102—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators
    • H04N9/3105—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM] using two-dimensional electronic spatial light modulators for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators
    • 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
    • G02F1/13363—Birefringent elements, e.g. for optical compensation
    • G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
    • 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
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136277—Active matrix addressed cells formed on a semiconductor substrate, e.g. of silicon
    • 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
    • G02F2413/02—Number of plates being 2
    • 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
    • G02F2413/07—All plates on one side of the LC cell
    • 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

Abstract

An arrangement of optical components and orientation thereof that performs both skew ray compensation and reduction of residual retardation in LCoS based display devices. A principle axis of a quater waveplate (500) oriented is aligned parallel to reference axis, and a microdisplay device (550) is coupled to the quarter waveplate and oriented at an angle θo such that an optical 'axis' of the microdisplay is optimally oriented for residual retardation compensation with respect to the linearly polarized light input to the microdisplay from the quarter waveplate when the reference axis is parallel to an axis of linear polarization of light incident to the quarter waveplate. A quarter waveplate and a half wavplate are oriented at 1/2 theta and a microdsiplay is oriented at theta. A prism assembly contructed using microdsiplay packages that simultaneously perform skew ray and residual retardation compensation.
PCT/US2004/009693 2003-03-28 2004-03-29 MEANS OF COMPENSATION TO INCREASE THE CONTRAST RATIO OF LCoS BASED VIDEO PROJECTION SYSTEMS WO2004088362A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW093109615A TW200532319A (en) 2004-03-29 2004-04-07 Means of compensation to increase the contrast ratio of LCoS based video projection systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45891703P 2003-03-28 2003-03-28
US60/458,917 2003-03-28

Publications (3)

Publication Number Publication Date
WO2004088362A2 WO2004088362A2 (en) 2004-10-14
WO2004088362A9 WO2004088362A9 (en) 2005-07-28
WO2004088362A3 true WO2004088362A3 (en) 2005-09-09

Family

ID=33131843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/009693 WO2004088362A2 (en) 2003-03-28 2004-03-29 MEANS OF COMPENSATION TO INCREASE THE CONTRAST RATIO OF LCoS BASED VIDEO PROJECTION SYSTEMS

Country Status (1)

Country Link
WO (1) WO2004088362A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020001135A1 (en) * 2000-03-27 2002-01-03 Berman Arthur L. High efficiency prism assembly for image projection
US20030103171A1 (en) * 2001-12-03 2003-06-05 Hall Estill Thone Light valve projector architecture
US6717706B2 (en) * 2000-08-31 2004-04-06 Cambridge Research And Instrumentation, Inc. State of polarization detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020001135A1 (en) * 2000-03-27 2002-01-03 Berman Arthur L. High efficiency prism assembly for image projection
US6717706B2 (en) * 2000-08-31 2004-04-06 Cambridge Research And Instrumentation, Inc. State of polarization detector
US20030103171A1 (en) * 2001-12-03 2003-06-05 Hall Estill Thone Light valve projector architecture

Also Published As

Publication number Publication date
WO2004088362A2 (en) 2004-10-14
WO2004088362A9 (en) 2005-07-28

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