DK0819973T3 - Fresnel-linseplade til overheadprojektorskærm - Google Patents

Fresnel-linseplade til overheadprojektorskærm

Info

Publication number
DK0819973T3
DK0819973T3 DK97112076T DK97112076T DK0819973T3 DK 0819973 T3 DK0819973 T3 DK 0819973T3 DK 97112076 T DK97112076 T DK 97112076T DK 97112076 T DK97112076 T DK 97112076T DK 0819973 T3 DK0819973 T3 DK 0819973T3
Authority
DK
Denmark
Prior art keywords
fresnel lens
lens plate
overhead projector
projector screen
screen
Prior art date
Application number
DK97112076T
Other languages
Danish (da)
English (en)
Inventor
Dai Nippon Printing Katsunori
Original Assignee
Dainippon Printing Co Ltd
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 Dainippon Printing Co Ltd filed Critical Dainippon Printing Co Ltd
Application granted granted Critical
Publication of DK0819973T3 publication Critical patent/DK0819973T3/da

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G02B3/08—Simple or compound lenses with non-spherical faces with discontinuous faces, e.g. Fresnel lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0006—Arrays
    • G02B3/0037—Arrays characterized by the distribution or form of lenses
    • G02B3/005—Arrays characterized by the distribution or form of lenses arranged along a single direction only, e.g. lenticular sheets
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/02—Diffusing elements; Afocal elements
    • G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
    • G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
    • 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)
  • Optics & Photonics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
DK97112076T 1996-07-15 1997-07-15 Fresnel-linseplade til overheadprojektorskærm DK0819973T3 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18498796A JP3936412B2 (ja) 1996-07-15 1996-07-15 フレネルレンズシート及び透過型スクリーン

Publications (1)

Publication Number Publication Date
DK0819973T3 true DK0819973T3 (da) 2003-07-07

Family

ID=16162822

Family Applications (1)

Application Number Title Priority Date Filing Date
DK97112076T DK0819973T3 (da) 1996-07-15 1997-07-15 Fresnel-linseplade til overheadprojektorskærm

Country Status (6)

Country Link
US (1) US6052226A (ja)
EP (1) EP0819973B1 (ja)
JP (1) JP3936412B2 (ja)
KR (1) KR100491507B1 (ja)
DE (1) DE69719877T2 (ja)
DK (1) DK0819973T3 (ja)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864853B1 (en) * 1997-03-11 2005-06-01 Nihon Kohden Corporation Particle analyser with composite lens formed by lens elements of different focal point
US6561649B1 (en) 1999-07-09 2003-05-13 Sarnoff Corporation Compact rear projection system using birefringent optics
US6873460B1 (en) 1999-07-09 2005-03-29 Sarnoff Corporation Retractable rear projection display
US6406150B1 (en) 1999-07-09 2002-06-18 Sarnoff Corporation Compact rear projections system
US6511186B1 (en) 1999-07-09 2003-01-28 Sarnoff Corporation Focus and aim device and method for image projection
US7102820B2 (en) 2002-08-16 2006-09-05 Infocus Corporation Flat valley fresnel lens for a display device
US7150537B2 (en) 2002-08-16 2006-12-19 Infocus Corporation Projection television device and screen
US6896375B2 (en) * 2002-08-16 2005-05-24 Infocus Corporation Rear projection display device having multiple mirrors that are substantially parallel to a screen
US7009765B2 (en) * 2002-08-16 2006-03-07 Infocus Corporation Wide angle lens system having a distorted intermediate image
US7175287B2 (en) * 2002-08-16 2007-02-13 Infocus Corporation Wide angle projection lens
US7341353B2 (en) * 2002-08-16 2008-03-11 Infocus Corporation Variable fresnel screen for use in projection device
FR2855273A1 (fr) 2003-05-20 2004-11-26 Thomson Licensing Sa Lentille de fresnel a eclairer sous incidence elevee
US7080910B2 (en) * 2003-08-19 2006-07-25 Infocus Corporation Method and system for a thermal architecture and user adjustable keystone in a display device
US7259912B2 (en) 2004-01-06 2007-08-21 Infocus Corporation Fresnel lens having reduced distortions
US7529042B2 (en) * 2007-01-26 2009-05-05 Losee Paul D Magnifying viewer and projector for portable electronic devices
CN101995593A (zh) * 2009-08-19 2011-03-30 富士迈半导体精密工业（上海）有限公司 非成像聚光透镜及太阳能聚光装置
CN102023327B (zh) * 2009-09-15 2012-08-22 富士迈半导体精密工业（上海）有限公司 非成像聚光透镜及太阳能聚光装置
CN102109622B (zh) * 2009-12-28 2012-09-19 富士迈半导体精密工业（上海）有限公司 聚光透镜
FR3110003A1 (fr) * 2020-05-11 2021-11-12 Institut Mines Telecom Ecran pour l’affichage d’une image projetée comportant un revêtement structuré.
WO2022242304A1 (zh) * 2021-05-19 2022-11-24 成都菲斯特科技有限公司 一种投影屏幕及投影系统

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004470A (en) * 1956-07-28 1961-10-17 Zeiss Ikon A G Stuttgart Multiple focal length lens
DD110366A1 (ja) * 1974-03-05 1974-12-12
JPS56147140A (en) * 1980-04-16 1981-11-14 Matsushita Electric Ind Co Ltd Fresnel lens
US5146342A (en) * 1990-04-20 1992-09-08 Pioneer Electronic Corporation Rear projection television set with lenticular sheet and fresnel lens
JPH04316010A (ja) * 1991-04-16 1992-11-06 Seiko Epson Corp 集光用フレネルレンズ
CA2182932A1 (en) * 1995-08-10 1997-02-11 Koju Watanabe Chromone derivative, process for preparing same and pharmaceutical composition
JP3371654B2 (ja) * 1995-10-30 2003-01-27 ソニー株式会社 投射型ディスプレイ装置

Also Published As

Publication number Publication date
EP0819973B1 (en) 2003-03-19
KR100491507B1 (ko) 2005-08-24
JPH1031102A (ja) 1998-02-03
JP3936412B2 (ja) 2007-06-27
US6052226A (en) 2000-04-18
KR980013366A (ko) 1998-04-30
DE69719877T2 (de) 2003-12-24
EP0819973A1 (en) 1998-01-21
DE69719877D1 (de) 2003-04-24

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