CA2042829A1 - Polarization converting device and polarized-light illuminating system using the device and image display unit using the same - Google Patents

Polarization converting device and polarized-light illuminating system using the device and image display unit using the same

Info

Publication number
CA2042829A1
CA2042829A1 CA2042829A CA2042829A CA2042829A1 CA 2042829 A1 CA2042829 A1 CA 2042829A1 CA 2042829 A CA2042829 A CA 2042829A CA 2042829 A CA2042829 A CA 2042829A CA 2042829 A1 CA2042829 A1 CA 2042829A1
Authority
CA
Canada
Prior art keywords
light
prism
polarized
display unit
image display
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.)
Granted
Application number
CA2042829A
Other languages
French (fr)
Other versions
CA2042829C (en
Inventor
Hideaki Mitsutake
Shigeru Kawasaki
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Publication of CA2042829A1 publication Critical patent/CA2042829A1/en
Application granted granted Critical
Publication of CA2042829C publication Critical patent/CA2042829C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G02F1/133—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
    • G02F1/1336—Illuminating devices
    • G02F1/13362—Illuminating devices providing polarized light, e.g. by converting a polarisation component into another one
    • 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
    • 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
    • G02F1/133536—Reflective polarizers
    • 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
    • G02F1/13355—Polarising beam splitters [PBS]

Abstract

A polarization converting device for converting a light from a light source into a polarized light comprises a first prism having a first slant plane for receiving the light from the light source and dividing it into first and second lights with their polarized planes orthogonal, a first emergent surface from which the first light exits, and a second emergent surface from which the second light exits, a second prism having an incident surface opposed to the second emergent surface of the first prism, a second slant plane for reflecting and deflecting the second light from the incident surface so as to direct it to an optical path almost parallel to that of the first light, and a third emergent surface from which the second light reflected from the second slant plane exits, and a transparent layer carried between the second emergent surface of the first prism and the incident surface of the second prism, the transparent layer having a smaller refractive index than the first prism.
CA002042829A 1990-05-18 1991-05-17 Polarization converting device and polarized-light illuminating system using the device and image display unit using the same Expired - Lifetime CA2042829C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP12675290 1990-05-18
JP2-126752 1990-05-18
JP26634690 1990-10-05
JP2-266346 1990-10-05
JP3136945A JPH04230705A (en) 1990-05-18 1991-05-14 Polarized light conversion device, polarized light illuminating device having this polarized light conversion device and projection type display device having polarized light illuminating device
JP3-136945 1991-05-14

Publications (2)

Publication Number Publication Date
CA2042829A1 true CA2042829A1 (en) 1991-11-19
CA2042829C CA2042829C (en) 1997-12-02

Family

ID=27315390

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002042829A Expired - Lifetime CA2042829C (en) 1990-05-18 1991-05-17 Polarization converting device and polarized-light illuminating system using the device and image display unit using the same

Country Status (5)

Country Link
US (1) US5387991A (en)
EP (1) EP0457605B1 (en)
JP (1) JPH04230705A (en)
CA (1) CA2042829C (en)
DE (1) DE69128979T2 (en)

Families Citing this family (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434041B1 (en) * 1989-12-20 1996-09-11 Canon Kabushiki Kaisha Polarized illuminating device
US5570209A (en) * 1990-09-18 1996-10-29 Mitsubishi Denki Kabushiki Kaisha Color projection type display apparatus having three liquid crystal displays of same structure
FR2685100A1 (en) * 1991-12-17 1993-06-18 Thomson Csf OPTICAL POLARIZATION SEPARATOR AND APPLICATION TO A VISUALIZATION SYSTEM.
US5903388A (en) * 1992-06-11 1999-05-11 Sedlmayr Steven R High efficiency electromagnetic beam projector and systems and method for implementation thereof
JPH0694902A (en) * 1992-09-11 1994-04-08 Canon Inc Optical element, light source, liquid crystal optical element, polarizing illuminator, illuminating optical device, polarized light separating element, polarizer, picture projector and stereoscopic image display method
JP2698521B2 (en) * 1992-12-14 1998-01-19 キヤノン株式会社 Catadioptric optical system and projection exposure apparatus having the optical system
JPH07294850A (en) * 1994-04-22 1995-11-10 Canon Inc Illuminator and projector using the same
JPH07294739A (en) * 1994-04-28 1995-11-10 Olympus Optical Co Ltd Polarized light separating element
JP2725606B2 (en) * 1994-08-25 1998-03-11 日本電気株式会社 LCD projector device
JP2738324B2 (en) * 1995-01-23 1998-04-08 日本電気株式会社 Projection type liquid crystal display
KR0174852B1 (en) * 1995-04-18 1999-03-20 김주용 Advanced optical system using optical deflection prism for panel type lcd
US5608552A (en) * 1995-12-26 1997-03-04 Hughes Electronics Liquid crystal display having an off-axis full-color holographic filter
US5959704A (en) 1996-02-08 1999-09-28 Fujitsu Limited Display device having diffraction grating
TW401530B (en) * 1996-03-12 2000-08-11 Seiko Epson Corp Polarized light separation device, method of fabricating the same and projection display apparatus using the polarized light separation device
TW358890B (en) 1996-06-25 1999-05-21 Seiko Epson Corp Polarizing converter, polarizing lighting, display and projection using these elements
US5975703A (en) 1996-09-30 1999-11-02 Digital Optics International Image projection system
JPH10339011A (en) * 1997-06-06 1998-12-22 Enomoto Kinzoku Kk Joint structure
FR2771186B1 (en) * 1997-11-18 2001-11-02 Thomson Multimedia Sa MIRROR DEVICE TO ROTATE THE POLARIZATION OF AN ELECTROMAGNETIC SIGNAL
US5900976A (en) * 1998-02-20 1999-05-04 Displaytech, Inc. Display system including a polarizing beam splitter
JPH11271533A (en) * 1998-03-24 1999-10-08 Sharp Corp Hologram polarizing and separating element
US5986815A (en) * 1998-05-15 1999-11-16 Optical Coating Laboratory, Inc. Systems, methods and apparatus for improving the contrast ratio in reflective imaging systems utilizing color splitters
US6428198B1 (en) * 1998-07-07 2002-08-06 Alliedsignal Inc. Display system having a light source separate from a display device
US6398364B1 (en) 1999-10-06 2002-06-04 Optical Coating Laboratory, Inc. Off-axis image projection display system
KR100534575B1 (en) * 2001-04-24 2005-12-07 삼성에스디아이 주식회사 Light Converting Apparatus of Projection System
US20030112511A1 (en) * 2001-12-19 2003-06-19 Koninklijke Philips Electronics N.V. Polarization conversion method for liquid crystal displays
TWI289708B (en) * 2002-12-25 2007-11-11 Qualcomm Mems Technologies Inc Optical interference type color display
US7342705B2 (en) 2004-02-03 2008-03-11 Idc, Llc Spatial light modulator with integrated optical compensation structure
US20060066586A1 (en) * 2004-09-27 2006-03-30 Gally Brian J Touchscreens for displays
US20060132383A1 (en) * 2004-09-27 2006-06-22 Idc, Llc System and method for illuminating interferometric modulator display
US7630123B2 (en) * 2004-09-27 2009-12-08 Qualcomm Mems Technologies, Inc. Method and device for compensating for color shift as a function of angle of view
JP4752490B2 (en) * 2005-12-22 2011-08-17 ソニー株式会社 PS polarization separation conversion element and liquid crystal display assembly
US8872085B2 (en) 2006-10-06 2014-10-28 Qualcomm Mems Technologies, Inc. Display device having front illuminator with turning features
KR101628340B1 (en) * 2006-10-06 2016-06-08 퀄컴 엠이엠에스 테크놀로지스, 인크. Display device, and method of forming display
WO2008045463A2 (en) * 2006-10-10 2008-04-17 Qualcomm Mems Technologies, Inc. Display device with diffractive optics
JP5239237B2 (en) * 2007-07-19 2013-07-17 コニカミノルタアドバンストレイヤー株式会社 Image projection device
US8068710B2 (en) 2007-12-07 2011-11-29 Qualcomm Mems Technologies, Inc. Decoupled holographic film and diffuser
US7949213B2 (en) * 2007-12-07 2011-05-24 Qualcomm Mems Technologies, Inc. Light illumination of displays with front light guide and coupling elements
US20090168459A1 (en) * 2007-12-27 2009-07-02 Qualcomm Incorporated Light guide including conjugate film
WO2009099547A2 (en) * 2008-01-30 2009-08-13 Digital Optics International, Llc Thin illumination system
US8721149B2 (en) 2008-01-30 2014-05-13 Qualcomm Mems Technologies, Inc. Illumination device having a tapered light guide
US20100182572A1 (en) * 2009-01-19 2010-07-22 Herb He Huang polarizer assembly and a reflective modulation-imager projection system
WO2010138763A1 (en) * 2009-05-29 2010-12-02 Qualcomm Mems Technologies, Inc. Illumination devices and methods of fabrication thereof
JP5583558B2 (en) * 2010-11-18 2014-09-03 旭化成イーマテリアルズ株式会社 Polarization conversion illumination device and display device using the same
US8902484B2 (en) 2010-12-15 2014-12-02 Qualcomm Mems Technologies, Inc. Holographic brightness enhancement film
JP5747538B2 (en) * 2011-02-04 2015-07-15 セイコーエプソン株式会社 Virtual image display device
JP2015127828A (en) * 2015-03-13 2015-07-09 セイコーエプソン株式会社 Virtual image display device
JP6577797B2 (en) * 2015-09-03 2019-09-18 日本電信電話株式会社 Polarization separator
JP6317050B1 (en) * 2016-06-17 2018-04-25 オリンパス株式会社 Objective optical system and endoscope apparatus including the same
CN106405933B (en) * 2016-10-31 2019-08-13 京东方科技集团股份有限公司 Backlight module and liquid crystal display device
US11579457B2 (en) 2019-09-13 2023-02-14 Meta Platforms Technologies, Llc Short distance illumination of a spatial light modulator using an optical element with an aperture

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE43569C (en) * A. KrOss in Hamburg, Adolphsbrücke 7 Prism combination made of calcite for the purpose of mixing and comparing light bundles
JPS6118481Y2 (en) * 1980-05-09 1986-06-05
US4516837A (en) * 1983-02-22 1985-05-14 Sperry Corporation Electro-optical switch for unpolarized optical signals
JPS6063503A (en) * 1983-09-19 1985-04-11 Fujitsu Ltd Polarization separating element
US4989076A (en) * 1987-01-27 1991-01-29 Canon Kabushiki Kaisha Video projection apparatus
US4824214A (en) * 1987-07-27 1989-04-25 Hughes Aircraft Company Unitary prepolarizing prism assembly for a four color liquid crystal light valve image projector
DE3829598A1 (en) * 1988-08-29 1990-03-01 Hertz Inst Heinrich Projection device
US5042921A (en) * 1988-10-25 1991-08-27 Casio Computer Co., Ltd. Liquid crystal display apparatus
US4913529A (en) * 1988-12-27 1990-04-03 North American Philips Corp. Illumination system for an LCD display system
EP0434041B1 (en) * 1989-12-20 1996-09-11 Canon Kabushiki Kaisha Polarized illuminating device
JP2915467B2 (en) * 1990-02-22 1999-07-05 キヤノン株式会社 LCD projector
FR2658925B1 (en) * 1990-02-23 1993-04-23 Sextant Avionique POLARIZED LIGHT LIGHTING DEVICE AND VISUALIZATION MATERIAL COMPRISING AT LEAST ONE SUCH DEVICE.

Also Published As

Publication number Publication date
EP0457605A3 (en) 1992-05-06
DE69128979T2 (en) 1998-08-06
CA2042829C (en) 1997-12-02
EP0457605A2 (en) 1991-11-21
US5387991A (en) 1995-02-07
DE69128979D1 (en) 1998-04-09
JPH04230705A (en) 1992-08-19
EP0457605B1 (en) 1998-03-04

Similar Documents

Publication Publication Date Title
CA2042829A1 (en) Polarization converting device and polarized-light illuminating system using the device and image display unit using the same
US5729311A (en) Illumination system for a flat-panel picture display device
JP2747349B2 (en) Lighting system for liquid crystal display system
JP2023009084A5 (en)
EP0389240A3 (en) Polarizing beam splitter apparatus and light valve image projection system
WO2018013307A1 (en) An illuminator for a wearable display
CA2258094A1 (en) Compact display system with two stage magnification and immersed beam splitter
KR940701548A (en) Retroreflective polarizer
WO2002061490A3 (en) Low-observability, wide-field-of-view, situation awareness viewing device
EP0395344A3 (en) Planar light-source device and illumination apparatus using the same
WO2001055774A8 (en) Reflective lcd projection system using wide-angle cartesian polarizing beam splitter and color separation and recombination prisms
SG108261A1 (en) Illumination optical system and projector comprising the same
TW354386B (en) Projection type image display apparatus
CA2099067A1 (en) Plane Light Source Unit
KR970703541A (en) High-efficiency illumination device and image projection apparatus comprising such a device
CA2290860A1 (en) Polarizing back-lighting system for direct view liquid crystal displays
JP3080693B2 (en) Polarizing beam splitter array
KR960038458A (en) A polarization splitter device, a system for illuminating a liquid crystal screen
CA2056636A1 (en) Guard holograms
TW372277B (en) Polarized light illuminator and projection type image display apparatus
EP1031872A4 (en) Application of light source including light guide for emanating linearly polarized light to liquid crystal display
KR930013829A (en) Optical polarizer and display system using it
GB2325330A (en) Ambient illuminated electro-optic display device
CA2177934A1 (en) Lighting device transformed in the direction of polarization and projection type image display device using the same
CA2084259A1 (en) Linear, polarization/conversion apparatus

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202