CA2141238A1 - Optical System for Rear Projection Picture Display Apparatus - Google Patents

Optical System for Rear Projection Picture Display Apparatus

Info

Publication number
CA2141238A1
CA2141238A1 CA2141238A CA2141238A CA2141238A1 CA 2141238 A1 CA2141238 A1 CA 2141238A1 CA 2141238 A CA2141238 A CA 2141238A CA 2141238 A CA2141238 A CA 2141238A CA 2141238 A1 CA2141238 A1 CA 2141238A1
Authority
CA
Canada
Prior art keywords
picture display
plane mirror
screen
optical system
rear projection
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
CA2141238A
Other languages
French (fr)
Other versions
CA2141238C (en
Inventor
Shigekazu Yamagishi
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.)
Panasonic Holdings Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2141238A1 publication Critical patent/CA2141238A1/en
Application granted granted Critical
Publication of CA2141238C publication Critical patent/CA2141238C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • 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
    • H04N5/7408—Direct viewing projectors, e.g. an image displayed on a video CRT or LCD display being projected on a screen

Abstract

An optical system for a rear projection picture display has reduced size while maintaining screen size.
Two plane mirrors are provided along a light path between a picture display unit and a screen. The first plane mirror at a projection lens side is made of a reflecting polarizer and is located along a light path between the second plane mirror and the screen. The two plane mirrors are set in a relative angle so that the incident angle of the light traveling from the projection lens to the first plane mirror is large as compared with the incident angle of the light traveling from the second plane mirror to the first plane mirror. A polarizing plate is attached at the rear side of the screen.
CA002141238A 1994-01-28 1995-01-27 Optical system for rear projection picture display apparatus Expired - Fee Related CA2141238C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP00801394A JP3278521B2 (en) 1994-01-28 1994-01-28 Rear projection type image display
JP6-8013 1994-01-28

Publications (2)

Publication Number Publication Date
CA2141238A1 true CA2141238A1 (en) 1995-07-29
CA2141238C CA2141238C (en) 2000-11-07

Family

ID=11681470

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002141238A Expired - Fee Related CA2141238C (en) 1994-01-28 1995-01-27 Optical system for rear projection picture display apparatus

Country Status (7)

Country Link
US (1) US5557343A (en)
EP (2) EP0665460B1 (en)
JP (1) JP3278521B2 (en)
KR (1) KR0184315B1 (en)
CN (1) CN1074549C (en)
CA (1) CA2141238C (en)
DE (2) DE69528401T2 (en)

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US20030206342A1 (en) * 1993-05-12 2003-11-06 Bright View Technologies, Inc. Micro-lens array based light transmission screen
US6483612B2 (en) 1998-04-15 2002-11-19 Duke University Projection screen apparatus including holographic optical element
US5808704A (en) * 1994-01-17 1998-09-15 Hitachi, Ltd. Rear projection type image display apparatus
DE69632813T2 (en) * 1995-08-23 2005-06-30 Koninklijke Philips Electronics N.V. LIGHTING SYSTEM FOR A FLAT PANEL IMAGE DISPLAY DEVICE
US6181386B1 (en) 1995-12-29 2001-01-30 Duke University Projecting images
KR100515447B1 (en) * 1995-12-29 2005-12-16 듀크 유니버시티 Projecting images
CA2193790C (en) * 1995-12-29 2001-03-13 Duke University Projecting images
US6525750B1 (en) 1996-03-08 2003-02-25 Duke University Projection display for computers
US6390626B2 (en) 1996-10-17 2002-05-21 Duke University Image projection system engine assembly
EP0939333A4 (en) * 1996-10-31 2003-05-14 Sanyo Electric Co Back projection display
FR2764462A1 (en) * 1997-06-10 1998-12-11 Thomson Multimedia Sa IMPROVEMENT IN PROJECTION SYSTEMS
US6204901B1 (en) 1997-07-31 2001-03-20 Duke University Liquid crystal color shutters that include reflective polarizers that pass color components of light of a first polarization and that reflect a majority of color components of light of a second polarization
US6829087B2 (en) * 1998-04-15 2004-12-07 Bright View Technologies, Inc. Micro-lens array based light transmitting screen with tunable gain
US6816306B2 (en) * 1998-04-15 2004-11-09 Bright View Technologies Inc. Micro-lens array based light transmitting screen with high resolution and low imaging artifacts
US6967779B2 (en) * 1998-04-15 2005-11-22 Bright View Technologies, Inc. Micro-lens array with precisely aligned aperture mask and methods of producing same
JPH11305337A (en) * 1998-04-17 1999-11-05 Seiko Epson Corp Rear projection type display device
US6208463B1 (en) 1998-05-14 2001-03-27 Moxtek Polarizer apparatus for producing a generally polarized beam of light
US6108131A (en) * 1998-05-14 2000-08-22 Moxtek Polarizer apparatus for producing a generally polarized beam of light
JPH11352474A (en) * 1998-06-08 1999-12-24 Sharp Corp Back light for liquid crystal display device and liquid crystal display device
US6220713B1 (en) 1998-10-23 2001-04-24 Compaq Computer Corporation Projection lens and system
US6172816B1 (en) 1998-10-23 2001-01-09 Duke University Optical component adjustment for mitigating tolerance sensitivities
US6185041B1 (en) 1998-10-23 2001-02-06 Duke University Projection lens and system
US6217174B1 (en) 1999-01-28 2001-04-17 Richard M. Knox Image projection
US6407862B2 (en) 1999-05-14 2002-06-18 3M Innovative Properties Company Electronic projection system with polymeric film optical components
US6122103A (en) * 1999-06-22 2000-09-19 Moxtech Broadband wire grid polarizer for the visible spectrum
US6288840B1 (en) 1999-06-22 2001-09-11 Moxtek Imbedded wire grid polarizer for the visible spectrum
US6234634B1 (en) 1999-07-28 2001-05-22 Moxtek Image projection system with a polarizing beam splitter
US6447120B2 (en) 1999-07-28 2002-09-10 Moxtex Image projection system with a polarizing beam splitter
US6666556B2 (en) 1999-07-28 2003-12-23 Moxtek, Inc Image projection system with a polarizing beam splitter
US6243199B1 (en) 1999-09-07 2001-06-05 Moxtek Broad band wire grid polarizing beam splitter for use in the visible wavelength region
US7375887B2 (en) 2001-03-27 2008-05-20 Moxtek, Inc. Method and apparatus for correcting a visible light beam using a wire-grid polarizer
US6568812B2 (en) * 2001-06-29 2003-05-27 Koninklijke Philips Electronics N.V. System for mounting infrared receiver behind mirror in rear projection television applications
US20030048391A1 (en) * 2001-09-07 2003-03-13 Myers Kenneth J. Projection television having an improved mirror system
KR20030026112A (en) * 2001-09-24 2003-03-31 엘지전자 주식회사 Device for projection display
AU2003207812B2 (en) * 2002-04-12 2008-02-07 Duke University Projection screen apparatus
US6785050B2 (en) 2002-05-09 2004-08-31 Moxtek, Inc. Corrosion resistant wire-grid polarizer and method of fabrication
US6634756B1 (en) * 2002-06-27 2003-10-21 Koninklijke Philips Electronics N.V. Beam-splitter folded path for rear projection displays
US7113335B2 (en) * 2002-12-30 2006-09-26 Sales Tasso R Grid polarizer with suppressed reflectivity
DE10322790A1 (en) * 2003-05-19 2004-12-16 Kacavenda, Vaso Display device with a wall or column-like housing
JP2006126787A (en) * 2004-09-30 2006-05-18 Victor Co Of Japan Ltd Image display apparatus
US7800823B2 (en) 2004-12-06 2010-09-21 Moxtek, Inc. Polarization device to polarize and further control light
US7961393B2 (en) 2004-12-06 2011-06-14 Moxtek, Inc. Selectively absorptive wire-grid polarizer
US7570424B2 (en) 2004-12-06 2009-08-04 Moxtek, Inc. Multilayer wire-grid polarizer
WO2007029446A1 (en) * 2005-09-01 2007-03-15 Matsushita Electric Industrial Co., Ltd. Image processing method, image processing device, and image processing program
JP2008009201A (en) * 2006-06-30 2008-01-17 Pentax Corp Projection apparatus
US8755113B2 (en) 2006-08-31 2014-06-17 Moxtek, Inc. Durable, inorganic, absorptive, ultra-violet, grid polarizer
JP5191134B2 (en) * 2007-02-02 2013-04-24 三菱電機株式会社 Projection television
US7789515B2 (en) 2007-05-17 2010-09-07 Moxtek, Inc. Projection device with a folded optical path and wire-grid polarizer
CN101738668B (en) 2008-11-19 2011-12-07 上海丽恒光微电子科技有限公司 Polarizing cube and method of fabricating the same
US8248696B2 (en) 2009-06-25 2012-08-21 Moxtek, Inc. Nano fractal diffuser
US8611007B2 (en) 2010-09-21 2013-12-17 Moxtek, Inc. Fine pitch wire grid polarizer
US8913321B2 (en) 2010-09-21 2014-12-16 Moxtek, Inc. Fine pitch grid polarizer
CN102742259B (en) * 2010-12-01 2016-07-06 松下知识产权经营株式会社 Stereo image shooting device and endoscope
US8913320B2 (en) 2011-05-17 2014-12-16 Moxtek, Inc. Wire grid polarizer with bordered sections
US8873144B2 (en) 2011-05-17 2014-10-28 Moxtek, Inc. Wire grid polarizer with multiple functionality sections
US8922890B2 (en) 2012-03-21 2014-12-30 Moxtek, Inc. Polarizer edge rib modification
US9348076B2 (en) 2013-10-24 2016-05-24 Moxtek, Inc. Polarizer with variable inter-wire distance

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2143963A (en) * 1983-07-25 1985-02-20 Philips Electronic Associated Projection lens system
US4556913A (en) * 1984-01-13 1985-12-03 Rca Corporation Apparatus for preventing virtual images in projection television receivers
US4621293A (en) * 1985-07-16 1986-11-04 Zenith Electronics Corporation Integrated lens and CRT mount for projection TV
US5084807A (en) * 1986-08-22 1992-01-28 U.S. Philips Corporation Illumination system for LCD projection television
US5105265A (en) * 1988-01-25 1992-04-14 Casio Computer Co., Ltd. Projector apparatus having three liquid crystal panels
GB8804402D0 (en) * 1988-02-25 1988-03-23 Emi Plc Thorn Display device
JPH04177335A (en) * 1990-11-13 1992-06-24 Hitachi Ltd Projection type liquid crystal display device
JPH052216A (en) * 1991-06-25 1993-01-08 Nec Corp Projection liquid crystal display device
JP2720724B2 (en) * 1992-08-06 1998-03-04 カシオ計算機株式会社 LCD projector

Also Published As

Publication number Publication date
CN1074549C (en) 2001-11-07
DE69532009T2 (en) 2004-05-19
DE69532009D1 (en) 2003-11-27
EP0989449B1 (en) 2003-10-22
CN1116318A (en) 1996-02-07
DE69528401T2 (en) 2003-06-12
US5557343A (en) 1996-09-17
EP0665460A3 (en) 1996-01-17
EP0665460B1 (en) 2002-10-02
KR0184315B1 (en) 1999-05-01
CA2141238C (en) 2000-11-07
EP0989449A3 (en) 2000-04-05
KR950024556A (en) 1995-08-21
JPH07219047A (en) 1995-08-18
JP3278521B2 (en) 2002-04-30
EP0665460A2 (en) 1995-08-02
EP0989449A2 (en) 2000-03-29
DE69528401D1 (en) 2002-11-07

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