DK129287A - Kompakt bagprojektionssystem med skraat indfaldende lysstraale - Google Patents

Kompakt bagprojektionssystem med skraat indfaldende lysstraale

Info

Publication number
DK129287A
DK129287A DK129287A DK129287A DK129287A DK 129287 A DK129287 A DK 129287A DK 129287 A DK129287 A DK 129287A DK 129287 A DK129287 A DK 129287A DK 129287 A DK129287 A DK 129287A
Authority
DK
Denmark
Prior art keywords
light beam
projection system
rear projection
including light
compact rear
Prior art date
Application number
DK129287A
Other languages
English (en)
Other versions
DK129287D0 (da
Inventor
Werner Adrianus Lam Heijnemans
Gijsbertus Bouwhuis
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of DK129287D0 publication Critical patent/DK129287D0/da
Publication of DK129287A publication Critical patent/DK129287A/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7408—Direct viewing projectors, e.g. an image displayed on a video CRT or LCD display being projected on a screen
    • 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)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Overhead Projectors And Projection Screens (AREA)
DK129287A 1986-03-18 1987-03-13 Kompakt bagprojektionssystem med skraat indfaldende lysstraale DK129287A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8600684A NL8600684A (nl) 1986-03-18 1986-03-18 Kompakt doorzichtprojektiesysteem met scheef invallende lichtbundel.

Publications (2)

Publication Number Publication Date
DK129287D0 DK129287D0 (da) 1987-03-13
DK129287A true DK129287A (da) 1987-09-19

Family

ID=19847730

Family Applications (1)

Application Number Title Priority Date Filing Date
DK129287A DK129287A (da) 1986-03-18 1987-03-13 Kompakt bagprojektionssystem med skraat indfaldende lysstraale

Country Status (5)

Country Link
US (1) US4963016A (da)
EP (1) EP0240045A1 (da)
JP (1) JPS62226778A (da)
DK (1) DK129287A (da)
NL (1) NL8600684A (da)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5208620A (en) * 1988-10-04 1993-05-04 Canon Kabushiki Kaisha Display apparatus
JPH03241983A (ja) * 1990-02-20 1991-10-29 Canon Inc 背面投写型受像機
GB9026151D0 (en) * 1990-11-30 1991-01-16 Emi Plc Thorn Display device
US5442484A (en) * 1992-01-06 1995-08-15 Mitsubishi Denki Kabushiki Kaisha Retro-focus type lens and projection-type display apparatus
US5808811A (en) * 1995-11-08 1998-09-15 Olympus Optical Co., Ltd. Zoom lens system
US5838403A (en) * 1996-02-14 1998-11-17 Physical Optics Corporation Liquid crystal display system with internally reflecting waveguide for backlighting and non-Lambertian diffusing
US6072551A (en) * 1996-02-14 2000-06-06 Physical Optics Corporation Backlight apparatus for illuminating a display with controlled light output characteristics
US5975703A (en) 1996-09-30 1999-11-02 Digital Optics International Image projection system
US5791754A (en) * 1997-01-14 1998-08-11 International Business Machines Corporation Compact desktop projection display using three mirrors
ATE316659T1 (de) * 1998-07-09 2006-02-15 Svyatoslav Ivanovich Arsenich Projektionssystem
AU777830B2 (en) 1999-07-08 2004-11-04 Svyatoslav Ivanovich Arsenich Projection system
US6728032B2 (en) * 2001-10-17 2004-04-27 Infocus Corporation Rear projection display system
JP2004077535A (ja) * 2002-08-09 2004-03-11 Dainippon Printing Co Ltd フレネルレンズシート
JP4411030B2 (ja) * 2003-07-22 2010-02-10 キヤノン株式会社 投射型表示装置
US7095558B2 (en) * 2003-09-01 2006-08-22 Hitachi, Ltd. Image display device, rear projection type screen used in image display device, Fresnel lens sheet, and method of making Fresnel lens sheet
JP4196815B2 (ja) 2003-11-28 2008-12-17 株式会社日立製作所 背面投写型映像表示装置
US20070008498A1 (en) * 2005-07-11 2007-01-11 Shohei Matsuoka Projection display device
JP2007183302A (ja) * 2005-12-29 2007-07-19 Sony Corp リアプロジェクションディスプレイ装置
US8721149B2 (en) 2008-01-30 2014-05-13 Qualcomm Mems Technologies, Inc. Illumination device having a tapered light guide
US8348489B2 (en) 2008-01-30 2013-01-08 Qualcomm Mems Technologies, Inc. Thin illumination system
JP6701681B2 (ja) * 2015-11-16 2020-05-27 セイコーエプソン株式会社 照明装置及びプロジェクター

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580661A (en) * 1969-04-10 1971-05-25 Bell & Howell Co Rear projection viewing screen for close viewing
US3848980A (en) * 1971-08-24 1974-11-19 Polaroid Corp Projector apparatus and system employing unique screen
US4173399A (en) * 1976-09-13 1979-11-06 Izon Corporation Compact optical viewer for microfiche or cassette
JPS5552417Y2 (da) * 1976-11-18 1980-12-05
DE2804704A1 (de) * 1978-02-03 1979-08-09 Soeding Tv Gmbh & Co Bild & To Projektionseinrichtung
JPS57195237A (en) * 1981-05-27 1982-11-30 Mitsubishi Rayon Co Ltd Fresnel lens for screen
JPS58153924A (ja) * 1982-03-10 1983-09-13 Hitachi Ltd 投写用スクリン
JPS58197969A (ja) * 1982-05-14 1983-11-17 Hitachi Ltd 背面投写形プロジエクシヨンテレビ
JPS599649A (ja) * 1982-07-09 1984-01-19 Dainippon Printing Co Ltd 透過型投影スクリ−ン
US4512631A (en) * 1983-04-21 1985-04-23 Rca Corporation Rear projection television screen incorporating a prism lens
US4482206A (en) * 1983-04-21 1984-11-13 Rca Corporation Rear projection television screen having a multi-surface Fresnel lens
JPS59173023U (ja) * 1983-05-09 1984-11-19 パイオニア株式会社 投写形テレビジヨン用レンズ装置
JPS61208041A (ja) * 1985-03-11 1986-09-16 Mitsubishi Rayon Co Ltd 背面投影スクリ−ン

Also Published As

Publication number Publication date
DK129287D0 (da) 1987-03-13
EP0240045A1 (en) 1987-10-07
US4963016A (en) 1990-10-16
JPS62226778A (ja) 1987-10-05
NL8600684A (nl) 1987-10-16

Similar Documents

Publication Publication Date Title
DK129287A (da) Kompakt bagprojektionssystem med skraat indfaldende lysstraale
DK609486A (da) Bagprojektionsskaerm
DK474088D0 (da) Bagprojektionsskaerm
DE68927423D1 (de) Optisches Verkleinerungssystem
DE3771517D1 (de) Rueckprojektionssystem.
GB2199158B (en) Light beam directing system
DE3784963D1 (de) Optisches projektionssystem.
DE3686234D1 (de) Optisches strahlenteilerprisma.
DE3685359D1 (de) Spiegelobjektivanordnung.
DE68916451D1 (de) Optisches Projektionssystem.
KR890005130U (ko) 보조시스템을 갖춘 회중전등
FI894137A7 (fi) Teledioptriskt linssystem.
DK223689D0 (da) Baglys projektionsskaerm
KR890700233A (ko) 광학장치
NL194596B (nl) Lichtbroneenheid.
DE69031366D1 (de) Optisches System
DE69028233D1 (de) Lichtstrahlabtastsystem
FR2622744B3 (fr) Systeme laser
KR900012312A (ko) 레이저 시스템
DE68907612D1 (de) Optisches system.
DE69030221D1 (de) Optisches System
NO178515C (no) Lasersystem
FI872991L (fi) Ljusstraolningsanordning.
FI891907A7 (fi) Linssi
DK78588D0 (da) Optisk system

Legal Events

Date Code Title Description
PUP Patent expired
AHB Application shelved due to non-payment