CA2041926A1 - Polarization converting apparatus and optical instrument having the same - Google Patents

Polarization converting apparatus and optical instrument having the same

Info

Publication number
CA2041926A1
CA2041926A1 CA2041926A CA2041926A CA2041926A1 CA 2041926 A1 CA2041926 A1 CA 2041926A1 CA 2041926 A CA2041926 A CA 2041926A CA 2041926 A CA2041926 A CA 2041926A CA 2041926 A1 CA2041926 A1 CA 2041926A1
Authority
CA
Canada
Prior art keywords
light
optical instrument
converting apparatus
polarization converting
same
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
CA2041926A
Other languages
French (fr)
Other versions
CA2041926C (en
Inventor
Sadahiko Tsuji
Hidetoshi Suzuki
Hideaki Mitsutake
Katsumi Kurematsu
Noritaka Mochizuki
Nobuo Minoura
Shigeru Kawasaki
Kazumi Kimura
Junko Shingaki
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
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
Priority claimed from JP2116728A external-priority patent/JPH0414032A/en
Priority claimed from JP2174442A external-priority patent/JPH0463321A/en
Priority claimed from JP31359790A external-priority patent/JP2888624B2/en
Application filed by Individual filed Critical Individual
Publication of CA2041926A1 publication Critical patent/CA2041926A1/en
Application granted granted Critical
Publication of CA2041926C publication Critical patent/CA2041926C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G02B27/28—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

Abstract

This specification discloses a polarization converting apparatus having means emitting non-polarized light, and polarizing means having a light incidence surface and a light emergence surface, the polarizing means receiving the non-polarized light by the light incidence surface and causing polarized light to emerge from the light emergence surface, the size and shape of the light incidence surface being similar to the size and cross-sectional shape of the non-polarized light.
The specification also discloses an optical instrument having such apparatus.
CA002041926A 1990-05-08 1991-05-06 Polarization converting apparatus and optical instrument having the same Expired - Fee Related CA2041926C (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2116728A JPH0414032A (en) 1990-05-08 1990-05-08 Illuminating device and image display device provided therewith
JP2-116728 1990-05-08
JP2-174442 1990-07-03
JP2174442A JPH0463321A (en) 1990-07-03 1990-07-03 Lighting system and image display device provided with the lighting system
JP31359790A JP2888624B2 (en) 1990-11-19 1990-11-19 Polarized illumination device and projection display device having the polarized illumination device
JP2-313597 1990-11-19

Publications (2)

Publication Number Publication Date
CA2041926A1 true CA2041926A1 (en) 1991-11-09
CA2041926C CA2041926C (en) 1995-12-12

Family

ID=27313215

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002041926A Expired - Fee Related CA2041926C (en) 1990-05-08 1991-05-06 Polarization converting apparatus and optical instrument having the same

Country Status (5)

Country Link
US (1) US5461500A (en)
EP (1) EP0456427B1 (en)
AT (1) ATE162921T1 (en)
CA (1) CA2041926C (en)
DE (1) DE69128810T2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05150191A (en) * 1991-12-02 1993-06-18 Nippon Avionics Co Ltd Linear polarized light conversion device
JPH05264904A (en) * 1992-03-18 1993-10-15 Canon Inc Illuminating optical system and projection type image display device using the 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
JPH07294850A (en) * 1994-04-22 1995-11-10 Canon Inc Illuminator and projector using the same
EP0765491B1 (en) * 1994-06-01 2006-08-02 Koninklijke Philips Electronics N.V. High-efficiency illumination device and image projection apparatus comprising such a device
KR0164463B1 (en) * 1994-11-25 1999-03-20 이헌조 Optical apparatus of liquid crystal projector
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
US5995284A (en) * 1996-03-29 1999-11-30 3M Innovative Properties Company Polarized illumination system for LCD projector
US6104536A (en) * 1998-09-18 2000-08-15 3M Innovative Properties Company High efficiency polarization converter including input and output lenslet arrays
IT1313117B1 (en) * 1999-08-25 2002-06-17 Morton Int Inc VACUUM APPLICATION EQUIPMENT EQUIPPED WITH CONVEYING VEHICLES PROCEDURE FOR APPLYING A DRY FILM RESIST TO A PANEL OF
KR100534575B1 (en) * 2001-04-24 2005-12-07 삼성에스디아이 주식회사 Light Converting Apparatus of Projection System
JP2004185781A (en) * 2002-12-06 2004-07-02 Pioneer Electronic Corp Optical device and optical pickup
KR100520604B1 (en) * 2003-01-15 2005-10-10 삼성전자주식회사 Wavelength division multiplexed light source and system for passive optical network wsing the same
US20070211471A1 (en) * 2003-10-27 2007-09-13 Wimberly Randal L Dual Reflector System
KR100694117B1 (en) * 2005-03-30 2007-03-12 삼성전자주식회사 Illuminating unit and image projection apparatus employing the same
DE102005032934A1 (en) * 2005-07-12 2007-01-25 Philipps-Universität Marburg Invention concerning reflector systems
CN101236305B (en) * 2007-02-02 2011-06-01 上海飞锐光电科技有限公司 Polarization converting device
US11619826B2 (en) * 2018-04-17 2023-04-04 Samsung Electronics Co., Ltd. Augmented reality (AR) display apparatus and method

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DE554927C (en) * 1932-07-15 Wilhelm Volkmann Dr Illumination mirror arrangement
US1223752A (en) * 1915-01-14 1917-04-24 Western Electric Co Apparatus for reflecting light-rays.
US1503766A (en) * 1923-12-05 1924-08-05 Pictet Lucien Device for projecting and viewing stereoscopic pictures
US1717360A (en) * 1926-05-01 1929-06-18 Apparatus jfor polarizing ultra-violet radiations
FR711306A (en) * 1930-02-18 1931-09-07 Lighting device
US2272186A (en) * 1939-07-19 1942-02-10 Edward P Creehan Radiant energy projector
GB690467A (en) * 1950-12-11 1953-04-22 Brush Dev Co Device for controlling light intensity
FR1058232A (en) * 1952-03-13 1954-03-15 Reflection device
US2887566A (en) * 1952-11-14 1959-05-19 Marks Polarized Corp Glare-eliminating optical system
US3508809A (en) * 1967-12-29 1970-04-28 Rca Corp High efficiency light polarization system
US3588493A (en) * 1968-04-29 1971-06-28 Grimes Manufacturing Co Projecting lamps having reflector which form rectangular patterns of light
US3566099A (en) * 1968-09-16 1971-02-23 Polaroid Corp Light projection assembly
CA1127867A (en) * 1978-03-20 1982-07-20 Albert Brunsting Ellipsoid radiation collector and method
FR2440667A1 (en) * 1978-10-31 1980-05-30 Thomson Csf OPTICAL IMAGE REPRODUCING DEVICE USING A LIQUID CRYSTAL CELL AND FACSIMILE COMPRISING SUCH A DEVICE
US4525413A (en) * 1981-03-02 1985-06-25 Polaroid Corporation Optical device including birefringent polymer
JPS5866909A (en) * 1981-10-16 1983-04-21 Fujitsu Ten Ltd Illuminating device
JPS59127019A (en) * 1983-01-11 1984-07-21 Canon Inc Printer head
GB8600022D0 (en) * 1986-01-02 1986-02-12 Rca Corp Arrangement to minimize reflected ambient light
US4864390A (en) * 1986-08-22 1989-09-05 North American Philips Corporation Display system with equal path lengths
US4989076A (en) * 1987-01-27 1991-01-29 Canon Kabushiki Kaisha Video projection apparatus
US5146248A (en) * 1987-12-23 1992-09-08 North American Philips Corporation Light valve projection system with improved illumination
US4912614A (en) * 1987-12-23 1990-03-27 North American Philips Corporation Light valve projection system with non imaging optics for illumination
US5042921A (en) * 1988-10-25 1991-08-27 Casio Computer Co., Ltd. Liquid crystal display apparatus
US4936659A (en) * 1989-01-26 1990-06-26 Rockwell International Corporation Liquid crystal display brightness enhancer
US4973139A (en) * 1989-04-07 1990-11-27 Hughes Aircraft Company Automotive head-up display
JPH03175412A (en) * 1989-12-05 1991-07-30 Victor Co Of Japan Ltd Polarization converting element
US5142387A (en) * 1990-04-11 1992-08-25 Mitsubishi Denki Kabushiki Kaisha Projection-type display device having light source means including a first and second concave mirrors
JP2961807B2 (en) * 1990-04-20 1999-10-12 三菱電機株式会社 Projection display device
JPH04218015A (en) * 1990-07-27 1992-08-07 Victor Co Of Japan Ltd Polarization conversion element and dislay device

Also Published As

Publication number Publication date
EP0456427A2 (en) 1991-11-13
ATE162921T1 (en) 1998-02-15
US5461500A (en) 1995-10-24
DE69128810T2 (en) 1998-05-28
EP0456427B1 (en) 1998-01-28
DE69128810D1 (en) 1998-03-05
EP0456427A3 (en) 1992-10-14
CA2041926C (en) 1995-12-12

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Legal Events

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EEER Examination request
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