BG41967A1 - Spot- light screen for optical purposes - Google Patents

Spot- light screen for optical purposes

Info

Publication number
BG41967A1
BG41967A1 BG8154314A BG5431481A BG41967A1 BG 41967 A1 BG41967 A1 BG 41967A1 BG 8154314 A BG8154314 A BG 8154314A BG 5431481 A BG5431481 A BG 5431481A BG 41967 A1 BG41967 A1 BG 41967A1
Authority
BG
Bulgaria
Prior art keywords
spot
light screen
optical purposes
purposes
optical
Prior art date
Application number
BG8154314A
Other languages
English (en)
Inventor
Drechsel
Lasch
Original Assignee
Zeiss Jena Veb Carl
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 Zeiss Jena Veb Carl filed Critical Zeiss Jena Veb Carl
Publication of BG41967A1 publication Critical patent/BG41967A1/xx

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
    • G03B21/608—Fluid screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Projection Apparatus (AREA)
  • Transforming Electric Information Into Light Information (AREA)
BG8154314A 1980-12-23 1981-11-27 Spot- light screen for optical purposes BG41967A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD80226555A DD154401A1 (de) 1980-12-23 1980-12-23 Projektionsschirm fuer optische zwecke

Publications (1)

Publication Number Publication Date
BG41967A1 true BG41967A1 (en) 1987-09-15

Family

ID=5528294

Family Applications (1)

Application Number Title Priority Date Filing Date
BG8154314A BG41967A1 (en) 1980-12-23 1981-11-27 Spot- light screen for optical purposes

Country Status (6)

Country Link
US (1) US4401368A (cs)
JP (1) JPS5833538B2 (cs)
BG (1) BG41967A1 (cs)
CS (1) CS248266B1 (cs)
DD (1) DD154401A1 (cs)
DE (1) DE3149089A1 (cs)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3210361B2 (ja) * 1991-05-30 2001-09-17 ソニー株式会社 プロジェクター
US6426836B2 (en) * 1996-06-11 2002-07-30 Hewlett-Packard Co. Method and apparatus for reducing the formation of spots in laser projection
US6092900A (en) * 1997-06-11 2000-07-25 Hewlett-Packard Company Method and apparatus for reducing the formation of spots in laser projection
US6295162B1 (en) * 1997-01-20 2001-09-25 Dai Nippon Printing Co., Ltd. Rear projection screen with optical sheet having irregularities caused by diffusing material smoothed with a transparent control layer
US6466368B1 (en) 2000-04-26 2002-10-15 3M Innovative Properties Company Rear projection screen with reduced speckle
FI114878B (fi) * 2001-01-15 2005-01-14 Ismo Rakkolainen Menetelmä ja laitteisto projektiopinnan muodostamiseksi
FI117146B (fi) * 2001-06-18 2006-06-30 Karri Tapani Palovuori Suljintoimintoon perustuva laitteisto stereo- tai monikanavakuvan projisoimiseksi
FI117810B (fi) 2001-06-18 2007-02-28 Karri Palovuori Pulssitukseen perustuva laitteisto stereo- tai monikanavakuvan projisoimiseksi
KR100676633B1 (ko) * 2005-01-07 2007-01-31 (주)싸이텍연구소 접합 영상 패널 및 그 제조 방법
US7697201B2 (en) * 2006-05-24 2010-04-13 Seiko Epson Corporation Screen, rear projector, projection system, and image display unit
JP4172502B2 (ja) * 2006-06-14 2008-10-29 セイコーエプソン株式会社 スクリーン、リアプロジェクタ及び画像表示装置
US8016424B2 (en) * 2006-12-20 2011-09-13 Seiko Epson Corporation Rear projector and projection system
KR20110070990A (ko) * 2008-10-23 2011-06-27 니폰 가야꾸 가부시끼가이샤 레이저광용 광확산 셀, 이를 사용한 광원장치 및 화상 표시장치
JP5365453B2 (ja) * 2009-09-30 2013-12-11 カシオ計算機株式会社 背面投影型スクリーン及び背面投影型ディスプレイ装置
KR101178363B1 (ko) * 2010-10-26 2012-08-29 최해용 윈도우 영상 스크린 장치
CN102226866A (zh) * 2011-06-27 2011-10-26 上海源珅多媒体有限公司 一种水影成像的方法
DE102015200929A1 (de) * 2015-01-21 2016-07-21 Robert Bosch Gmbh Projektionsschirmvorrichtung, Projektionsvorrichtung und Projektionsverfahren

Family Cites Families (7)

* 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
US3655262A (en) * 1970-09-04 1972-04-11 Eastman Kodak Co Rear projection screen
US3705757A (en) * 1971-04-05 1972-12-12 Polacoat Inc Rear projection screen
US3751135A (en) * 1971-06-25 1973-08-07 E Clausen Rear projection screen
US4140369A (en) * 1977-04-11 1979-02-20 Massachusetts Institute Of Technology Efficient light diffuser
US4165153A (en) * 1978-04-25 1979-08-21 Polaroid Corporation Translucent screen
US4184762A (en) * 1978-06-16 1980-01-22 Oscar Guzman Variable definition projection systems

Also Published As

Publication number Publication date
US4401368A (en) 1983-08-30
DD154401A1 (de) 1982-03-17
DE3149089A1 (de) 1982-07-08
JPS57124724A (en) 1982-08-03
CS248266B1 (en) 1987-02-12
JPS5833538B2 (ja) 1983-07-20
CS876881A1 (en) 1985-06-13

Similar Documents

Publication Publication Date Title
GB2083218B (en) Optical position location apparatus
GB8317721D0 (en) Light source
GB2081924B (en) Photographic lighting apparatus
GB2168470B (en) Light projector
GB8328399D0 (en) Optical signal projector
BG41967A1 (en) Spot- light screen for optical purposes
GB8314439D0 (en) Optical glass
GB2107447B (en) Light
JPS5717921A (en) Optical system
DE3163853D1 (en) Light scanning apparatus
GB8403403D0 (en) Optical projector
JPS5755002A (en) Lens for lamp
DE3171408D1 (en) Optical system
GB2113670B (en) Optical glass
JPS57138683A (en) Display light
JPS56121012A (en) Optical system
GB2126037B (en) Optical parametrons
GB8306694D0 (en) Light unit
JPS5710123A (en) Optical system
JPS5717920A (en) Optical system
JPS57190921A (en) Optical apparatus
JPS57155530A (en) Optical apparatus
GB2075698B (en) Light filter
GB2090956B (en) Signal light
JPS57118214A (en) Optical branch unit