WO2004090631A3 - Ecran de retroprojection - Google Patents

Ecran de retroprojection Download PDF

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Publication number
WO2004090631A3
WO2004090631A3 PCT/FR2004/000839 FR2004000839W WO2004090631A3 WO 2004090631 A3 WO2004090631 A3 WO 2004090631A3 FR 2004000839 W FR2004000839 W FR 2004000839W WO 2004090631 A3 WO2004090631 A3 WO 2004090631A3
Authority
WO
WIPO (PCT)
Prior art keywords
diffuser
light
focussing elements
longitudinal axis
screen
Prior art date
Application number
PCT/FR2004/000839
Other languages
English (en)
Other versions
WO2004090631A2 (fr
Inventor
Daniel Gibilin
Original Assignee
Synelec Telecom Multimedia
Daniel Gibilin
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 Synelec Telecom Multimedia, Daniel Gibilin filed Critical Synelec Telecom Multimedia
Priority to EP04742433A priority Critical patent/EP1613999A2/fr
Priority to US10/551,787 priority patent/US20060126174A1/en
Publication of WO2004090631A2 publication Critical patent/WO2004090631A2/fr
Publication of WO2004090631A3 publication Critical patent/WO2004090631A3/fr

Links

Classifications

    • 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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens
    • G03B21/625—Lenticular translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

Un écran de rétroprojecteur présente successivement du côté projecteur vers l'extérieur, une lentille de Fresnel (6), un diffuseur surfacique (8), un support (10)1 fin collé sur un substrat 1 (24) épais muni d'une couche anti-reflet (26) externe. La lumière émise par le projecteur (2) est collimatée par la lentille de Fresnel (6). Elle traverse un diffuseur (8) ayant un diagramme de rayonnement allongé avec un grand axe horizontal. Ce diffuseur assure l'étalement de la lumière dans le plan horizontal, de sorte à assurer un large angle de vision horizontal. La lumière sortant du diffuseur est reçue sur un support (10) avec des éléments de focalisation cylindriques (18) sensiblement parallèles au grand axe du diagramme de rayonnement du diffuseur et une couche opaque (20) avec des ouvertures (22) adaptées à laisser passer la lumière focalisée par les éléments de focalisation. Comme les éléments de focalisation sont parallèles au grand axe du diffuseur, quasiment toute la lumière projetée est transmise. Du fait des éléments de focalisation, l'écran présente un angle de vision vertical adapté. La présence de la couche opaque assure un contraste optimisé du fait de la position arrière du diffuseur (8) par rapport au support (10).
PCT/FR2004/000839 2003-04-02 2004-04-02 Ecran de retroprojection WO2004090631A2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP04742433A EP1613999A2 (fr) 2003-04-02 2004-04-02 Ecran de retroprojection
US10/551,787 US20060126174A1 (en) 2003-04-02 2004-04-02 Retroprojection screen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR03/04125 2003-04-02
FR0304125A FR2853419B1 (fr) 2003-04-02 2003-04-02 Ecran de retroprojection

Publications (2)

Publication Number Publication Date
WO2004090631A2 WO2004090631A2 (fr) 2004-10-21
WO2004090631A3 true WO2004090631A3 (fr) 2005-03-03

Family

ID=32982197

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2004/000839 WO2004090631A2 (fr) 2003-04-02 2004-04-02 Ecran de retroprojection

Country Status (4)

Country Link
US (1) US20060126174A1 (fr)
EP (1) EP1613999A2 (fr)
FR (1) FR2853419B1 (fr)
WO (1) WO2004090631A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070171376A1 (en) * 2006-01-26 2007-07-26 Motorola, Inc. Projection display system
FR2930051A1 (fr) * 2008-04-09 2009-10-16 Franck Andre Marie Guigan Paroi optique asymetrique
KR101481181B1 (ko) * 2009-07-29 2015-01-12 코오롱인더스트리 주식회사 집광형 광학 시트
US9535313B2 (en) * 2012-09-14 2017-01-03 Scienstry, Inc. Underwater projection
TWI572906B (zh) * 2015-02-25 2017-03-01 台達電子工業股份有限公司 立體光場建立裝置
KR102398549B1 (ko) * 2015-08-31 2022-05-17 엘지디스플레이 주식회사 입체 영상 표시 장치
CN115086525B (zh) * 2022-06-21 2024-01-02 广东省傲来科技有限公司 摄像头模组组装方法、装置、设备及计算机可读存储介质

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928131A (en) * 1957-04-23 1960-03-15 American Optical Corp Light diffusing means and method of making same
US4432010A (en) * 1981-10-05 1984-02-14 Hitachi, Ltd. Rear projection apparatus
US4566756A (en) * 1983-03-07 1986-01-28 U.S. Philips Corporation Projection screen
EP0752613A2 (fr) * 1995-07-03 1997-01-08 Matsushita Electric Industrial Co., Ltd. Ecran de rétroprojection
EP0775935A1 (fr) * 1995-11-27 1997-05-28 Nashua Corporation Matériau diffusant la lumière et sa méthode de fabrication
US5889612A (en) * 1994-09-06 1999-03-30 U.S. Phillips Corporation Rear pojection screen
US20010050811A1 (en) * 1996-07-23 2001-12-13 Dai Nippon Printing Co., Ltd. Rear projection screen having reduced scintillation

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928131A (en) * 1957-04-23 1960-03-15 American Optical Corp Light diffusing means and method of making same
US4432010A (en) * 1981-10-05 1984-02-14 Hitachi, Ltd. Rear projection apparatus
US4566756A (en) * 1983-03-07 1986-01-28 U.S. Philips Corporation Projection screen
US5889612A (en) * 1994-09-06 1999-03-30 U.S. Phillips Corporation Rear pojection screen
EP0752613A2 (fr) * 1995-07-03 1997-01-08 Matsushita Electric Industrial Co., Ltd. Ecran de rétroprojection
EP0775935A1 (fr) * 1995-11-27 1997-05-28 Nashua Corporation Matériau diffusant la lumière et sa méthode de fabrication
US20010050811A1 (en) * 1996-07-23 2001-12-13 Dai Nippon Printing Co., Ltd. Rear projection screen having reduced scintillation

Also Published As

Publication number Publication date
WO2004090631A2 (fr) 2004-10-21
US20060126174A1 (en) 2006-06-15
EP1613999A2 (fr) 2006-01-11
FR2853419B1 (fr) 2005-07-01
FR2853419A1 (fr) 2004-10-08

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