WO1999053376A3 - Ensembles ecrans de projection - Google Patents

Ensembles ecrans de projection Download PDF

Info

Publication number
WO1999053376A3
WO1999053376A3 PCT/US1999/007785 US9907785W WO9953376A3 WO 1999053376 A3 WO1999053376 A3 WO 1999053376A3 US 9907785 W US9907785 W US 9907785W WO 9953376 A3 WO9953376 A3 WO 9953376A3
Authority
WO
WIPO (PCT)
Prior art keywords
projection screen
rear projection
matrix
fresnel
fresnel layer
Prior art date
Application number
PCT/US1999/007785
Other languages
English (en)
Other versions
WO1999053376A2 (fr
Inventor
Terence Edward Yeo
Original Assignee
Nashua Corp
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 Nashua Corp filed Critical Nashua Corp
Publication of WO1999053376A2 publication Critical patent/WO1999053376A2/fr
Publication of WO1999053376A3 publication Critical patent/WO1999053376A3/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)

Abstract

L'invention concerne un ensemble écran de projection arrière comprenant une couche de Fresnel monoface. La couche de Fresnel comprend une structure de Fresnel sur une face de la couche de Fresnel, une matrice et une pluralité de particules noyées dans la matrice, la pluralité de particules ayant un indice de réfraction différent de celui de la matrice et conférant des caractéristiques de diffusion de lumière à la couche de Fresnel.
PCT/US1999/007785 1998-04-09 1999-04-09 Ensembles ecrans de projection WO1999053376A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8121798P 1998-04-09 1998-04-09
US60/081,217 1998-04-09

Publications (2)

Publication Number Publication Date
WO1999053376A2 WO1999053376A2 (fr) 1999-10-21
WO1999053376A3 true WO1999053376A3 (fr) 2000-02-10

Family

ID=22162817

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/007785 WO1999053376A2 (fr) 1998-04-09 1999-04-09 Ensembles ecrans de projection

Country Status (1)

Country Link
WO (1) WO1999053376A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6710919B1 (en) 1999-09-29 2004-03-23 Scan Vision Screen Aps Translucent screen comprising a lens system
US7234817B2 (en) 2003-07-17 2007-06-26 Nitto Denko Corporation Liquid crystal projection system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712707A (en) * 1970-02-27 1973-01-23 Gen Electric Composite back projection screen and method of forming
US4083626A (en) * 1975-04-04 1978-04-11 Fuji Photo Film Co., Ltd. Rear projection screens
US4309073A (en) * 1979-01-17 1982-01-05 Sanyo Electric Co., Ltd. Translucent screen assembly
US5621486A (en) * 1995-06-22 1997-04-15 International Business Machines Corporation Efficient optical system for a high resolution projection display employing reflection light valves
EP0859270A1 (fr) * 1996-07-23 1998-08-19 Dai Nippon Printing Co., Ltd. Ecran de projection arriere

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3712707A (en) * 1970-02-27 1973-01-23 Gen Electric Composite back projection screen and method of forming
US4083626A (en) * 1975-04-04 1978-04-11 Fuji Photo Film Co., Ltd. Rear projection screens
US4309073A (en) * 1979-01-17 1982-01-05 Sanyo Electric Co., Ltd. Translucent screen assembly
US5621486A (en) * 1995-06-22 1997-04-15 International Business Machines Corporation Efficient optical system for a high resolution projection display employing reflection light valves
EP0859270A1 (fr) * 1996-07-23 1998-08-19 Dai Nippon Printing Co., Ltd. Ecran de projection arriere

Also Published As

Publication number Publication date
WO1999053376A2 (fr) 1999-10-21

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