CA2233597C - Dispositif d'affichage de protection extremement efficace possedant des diviseurs de faisceau de polarisation a couche mince - Google Patents

Dispositif d'affichage de protection extremement efficace possedant des diviseurs de faisceau de polarisation a couche mince Download PDF

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Publication number
CA2233597C
CA2233597C CA002233597A CA2233597A CA2233597C CA 2233597 C CA2233597 C CA 2233597C CA 002233597 A CA002233597 A CA 002233597A CA 2233597 A CA2233597 A CA 2233597A CA 2233597 C CA2233597 C CA 2233597C
Authority
CA
Canada
Prior art keywords
light
thin film
polarized
display system
projection 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.)
Expired - Lifetime
Application number
CA002233597A
Other languages
English (en)
Other versions
CA2233597A1 (fr
Inventor
Li Li
Brian Thomas Sullivan
Jerzy A. Dobrowolski
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.)
National Research Council of Canada
Original Assignee
National Research Council of Canada
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 US08/694,415 external-priority patent/US5912762A/en
Priority claimed from CA002183188A external-priority patent/CA2183188A1/fr
Application filed by National Research Council of Canada filed Critical National Research Council of Canada
Priority to CA002233597A priority Critical patent/CA2233597C/fr
Publication of CA2233597A1 publication Critical patent/CA2233597A1/fr
Application granted granted Critical
Publication of CA2233597C publication Critical patent/CA2233597C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • H04N9/3167—Modulator illumination systems for polarizing the light beam

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Polarising Elements (AREA)

Abstract

Dispositif d'affichage de projection comprenant un diviseur/combineur de faisceau de polarisation à couche mince comportant un premier et un deuxième substrats transmettant la lumière sous forme de prismes, ainsi qu'une pluralité de couches minces situées entre les prismes. Ces couches minces possèdent des épaisseurs prédéterminées et des indices de réfraction permettant de séparer la lumière en faisceaux lumineux s-polarisés et p-polarisés. On utilise simultanément à la fois la réflexion intérieure totale frustrée et l'interférence des couches minces, de manière à permettre la transmission de la lumière s-polarisée et la réflexion de la lumière p-polarisée sur une plage importante de longueurs d'ondes et d'angles d'incidence. Ce dispositif comprend, de plus, deux modulateurs de lumière spatiaux servant à coder une image à projeter. On obtient un affichage tridimensionnel en appliquant un signal différent à chaque modulateur spatial.
CA002233597A 1996-08-12 1997-08-13 Dispositif d'affichage de protection extremement efficace possedant des diviseurs de faisceau de polarisation a couche mince Expired - Lifetime CA2233597C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002233597A CA2233597C (fr) 1996-08-12 1997-08-13 Dispositif d'affichage de protection extremement efficace possedant des diviseurs de faisceau de polarisation a couche mince

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US08/694,415 US5912762A (en) 1996-08-12 1996-08-12 Thin film polarizing device
CA002183188A CA2183188A1 (fr) 1996-08-13 1996-08-13 Ecran de projection a rendement eleve comportant un diviseur de faisceau a polarisation en couches minces
CA2,183,188 1996-08-13
US2341296P 1996-08-14 1996-08-14
US08/694,415 1996-08-14
US60/023,412 1996-08-14
PCT/CA1997/000567 WO1998007279A1 (fr) 1996-08-12 1997-08-13 Dispositif d'affichage de projection extremement efficace possedant des diviseurs de faisceau de polarisation a couche mince
CA002233597A CA2233597C (fr) 1996-08-12 1997-08-13 Dispositif d'affichage de protection extremement efficace possedant des diviseurs de faisceau de polarisation a couche mince

Publications (2)

Publication Number Publication Date
CA2233597A1 CA2233597A1 (fr) 1998-02-19
CA2233597C true CA2233597C (fr) 2004-02-24

Family

ID=46203175

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002233597A Expired - Lifetime CA2233597C (fr) 1996-08-12 1997-08-13 Dispositif d'affichage de protection extremement efficace possedant des diviseurs de faisceau de polarisation a couche mince

Country Status (2)

Country Link
CA (1) CA2233597C (fr)
WO (1) WO1998007279A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6310712B1 (en) 1997-10-29 2001-10-30 Teloptics Corporation Discrete element light modulating microstructure devices
JP3622500B2 (ja) * 1998-05-20 2005-02-23 株式会社富士通ゼネラル 液晶プロジェクタ装置
US6394606B1 (en) * 1998-09-29 2002-05-28 Sony Corporation Projection-type display device
FR2793566B1 (fr) * 1999-05-11 2002-07-12 Thomson Csf Separateur de polarisations
US6462873B1 (en) * 2000-07-14 2002-10-08 Univ Hong Kong Science & Techn Polarizing beam splitter
US6634756B1 (en) * 2002-06-27 2003-10-21 Koninklijke Philips Electronics N.V. Beam-splitter folded path for rear projection displays
DE10361915B4 (de) * 2003-12-29 2009-03-05 Bausenwein, Bernhard, Dr. 2-Kanal-Stereo-Bildanzeigevorrichtung mit mikroelektromechanischen Systemen
US10477194B2 (en) 2012-04-25 2019-11-12 3M Innovative Properties Company Two imager projection device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720375A1 (de) * 1987-06-19 1988-12-29 Fraunhofer Ges Forschung Projektionsvorrichtung
NL8802104A (nl) * 1988-08-26 1990-03-16 Philips Nv Beeldprojektie-inrichting.
FR2665773B1 (fr) * 1990-08-10 1993-08-20 Thomson Csf Dispositif de projection d'images utilisant deux composantes orthogonales de polarisation de la lumiere.
JPH05257110A (ja) * 1992-03-13 1993-10-08 Sharp Corp 投射型液晶表示装置
WO1993024857A1 (fr) * 1992-06-01 1993-12-09 Bell Communications Research, Inc. Systeme d'affichage independant de la polarisation
JP3168770B2 (ja) * 1993-06-03 2001-05-21 松下電器産業株式会社 偏光装置および該偏光装置を用いた投写型表示装置
US5517340A (en) * 1995-01-30 1996-05-14 International Business Machines Corporation High performance projection display with two light valves
DE69624489T2 (de) * 1995-08-14 2003-06-26 Nat Res Council Canada Ottawa Polarisatoranordnung mit dünnen schichten

Also Published As

Publication number Publication date
WO1998007279A1 (fr) 1998-02-19
CA2233597A1 (fr) 1998-02-19

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Effective date: 20170814