WO2004077102A3 - Polarization recovery system using redirection - Google Patents

Polarization recovery system using redirection Download PDF

Info

Publication number
WO2004077102A3
WO2004077102A3 PCT/US2004/004866 US2004004866W WO2004077102A3 WO 2004077102 A3 WO2004077102 A3 WO 2004077102A3 US 2004004866 W US2004004866 W US 2004004866W WO 2004077102 A3 WO2004077102 A3 WO 2004077102A3
Authority
WO
WIPO (PCT)
Prior art keywords
light
polarization
useful polarization
recovery system
orthogonal
Prior art date
Application number
PCT/US2004/004866
Other languages
French (fr)
Other versions
WO2004077102A2 (en
Inventor
Kenneth K Li
Seiji Inatsugu
Original Assignee
Wavien Inc
Kenneth K Li
Seiji Inatsugu
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 Wavien Inc, Kenneth K Li, Seiji Inatsugu filed Critical Wavien Inc
Priority to EP04713304A priority Critical patent/EP1597514A4/en
Priority to CA002515141A priority patent/CA2515141A1/en
Priority to JP2006503699A priority patent/JP2006518486A/en
Publication of WO2004077102A2 publication Critical patent/WO2004077102A2/en
Publication of WO2004077102A3 publication Critical patent/WO2004077102A3/en

Links

Classifications

    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/0994—Fibers, light pipes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • 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
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0927—Systems for changing the beam intensity distribution, e.g. Gaussian to top-hat
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal
    • H04N5/7441—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal the modulator being an array of liquid crystal cells
    • 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]
    • H04N9/3141—Constructional details thereof
    • H04N9/315—Modulator illumination systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/04—Prisms

Abstract

A polarization recovery system includes a polarizing beam splitter transmitting light of a useful polarization in an output direction and reflecting light of a non-useful polarization in a first orthogonal direction substantially orthogonal to the output direction. An initial reflector may reflect the non-useful polarization light in a second orthogonal direction substantially orthogonal to the output direction and the first orthogonal direction, and a final reflector may reflect the non-useful polarization light in the output direction. The non-useful polarization light may be rotated substantially to light of the useful polarization by the initial and final reflectors.
PCT/US2004/004866 2003-02-21 2004-02-20 Polarization recovery system using redirection WO2004077102A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04713304A EP1597514A4 (en) 2003-02-21 2004-02-20 Polarization recovery system using redirection
CA002515141A CA2515141A1 (en) 2003-02-21 2004-02-20 Polarization recovery system using redirection
JP2006503699A JP2006518486A (en) 2003-02-21 2004-02-20 Polarization recovery system using redirection

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US44847103P 2003-02-21 2003-02-21
US60/448,471 2003-02-21
US46939303P 2003-05-12 2003-05-12
US60/469,393 2003-05-12

Publications (2)

Publication Number Publication Date
WO2004077102A2 WO2004077102A2 (en) 2004-09-10
WO2004077102A3 true WO2004077102A3 (en) 2005-05-12

Family

ID=32930484

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/004866 WO2004077102A2 (en) 2003-02-21 2004-02-20 Polarization recovery system using redirection

Country Status (6)

Country Link
EP (1) EP1597514A4 (en)
JP (1) JP2006518486A (en)
KR (1) KR20050103500A (en)
CA (1) CA2515141A1 (en)
TW (1) TWI238901B (en)
WO (1) WO2004077102A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4988209B2 (en) * 2006-01-13 2012-08-01 三洋電機株式会社 Rod fixing structure and projection-type image display device
EP3021072B1 (en) * 2014-11-14 2016-09-28 Sick Ag Lighting device and method for projecting an illumination pattern

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197913A (en) * 1987-02-13 1988-08-16 Nec Corp Polarization converting element
JPH0488301A (en) * 1990-08-01 1992-03-23 Canon Inc Polarization conversion module
US5884991A (en) * 1997-02-18 1999-03-23 Torch Technologies Llc LCD projection system with polarization doubler
US6081367A (en) * 1996-12-10 2000-06-27 Nec Corporation Optical filter module and optical amplifier using the same
US6288840B1 (en) * 1999-06-22 2001-09-11 Moxtek Imbedded wire grid polarizer for the visible spectrum

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6587269B2 (en) * 2000-08-24 2003-07-01 Cogent Light Technologies Inc. Polarization recovery system for projection displays

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197913A (en) * 1987-02-13 1988-08-16 Nec Corp Polarization converting element
JPH0488301A (en) * 1990-08-01 1992-03-23 Canon Inc Polarization conversion module
US6081367A (en) * 1996-12-10 2000-06-27 Nec Corporation Optical filter module and optical amplifier using the same
US5884991A (en) * 1997-02-18 1999-03-23 Torch Technologies Llc LCD projection system with polarization doubler
US6288840B1 (en) * 1999-06-22 2001-09-11 Moxtek Imbedded wire grid polarizer for the visible spectrum

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1597514A4 *

Also Published As

Publication number Publication date
TW200422665A (en) 2004-11-01
JP2006518486A (en) 2006-08-10
TWI238901B (en) 2005-09-01
WO2004077102A2 (en) 2004-09-10
EP1597514A4 (en) 2009-08-26
CA2515141A1 (en) 2004-09-10
KR20050103500A (en) 2005-10-31
EP1597514A2 (en) 2005-11-23

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