DE69420290D1 - Verfahren zur Herstellung einer Maske mit zufallsverteilten Oeffnungen zur Herstellung eines Streuschirms - Google Patents

Verfahren zur Herstellung einer Maske mit zufallsverteilten Oeffnungen zur Herstellung eines Streuschirms

Info

Publication number
DE69420290D1
DE69420290D1 DE69420290T DE69420290T DE69420290D1 DE 69420290 D1 DE69420290 D1 DE 69420290D1 DE 69420290 T DE69420290 T DE 69420290T DE 69420290 T DE69420290 T DE 69420290T DE 69420290 D1 DE69420290 D1 DE 69420290D1
Authority
DE
Germany
Prior art keywords
production
mask
randomly distributed
diffusing screen
distributed openings
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69420290T
Other languages
English (en)
Other versions
DE69420290T2 (de
Inventor
William Johnson
Nicholas Phillips
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microsharp Corp Ltd
Original Assignee
Nashua Photo Ltd
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
Priority claimed from GB939312339A external-priority patent/GB9312339D0/en
Priority claimed from GB939312480A external-priority patent/GB9312480D0/en
Application filed by Nashua Photo Ltd, Nashua Corp filed Critical Nashua Photo Ltd
Publication of DE69420290D1 publication Critical patent/DE69420290D1/de
Application granted granted Critical
Publication of DE69420290T2 publication Critical patent/DE69420290T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
DE69420290T 1993-06-15 1994-06-14 Verfahren zur Herstellung einer Maske mit zufallsverteilten Oeffnungen zur Herstellung eines Streuschirms Expired - Fee Related DE69420290T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939312339A GB9312339D0 (en) 1993-06-15 1993-06-15 Randomised mask for a microlens screen
GB939312480A GB9312480D0 (en) 1993-06-17 1993-06-17 Randomised mask for a microlens screen
PCT/GB1994/001281 WO1994029768A1 (en) 1993-06-15 1994-06-14 Randomised mask for a diffusing screen

Publications (2)

Publication Number Publication Date
DE69420290D1 true DE69420290D1 (de) 1999-09-30
DE69420290T2 DE69420290T2 (de) 1999-12-09

Family

ID=26303076

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69420290T Expired - Fee Related DE69420290T2 (de) 1993-06-15 1994-06-14 Verfahren zur Herstellung einer Maske mit zufallsverteilten Oeffnungen zur Herstellung eines Streuschirms

Country Status (7)

Country Link
US (1) US5695895A (de)
EP (1) EP0801767B1 (de)
JP (1) JPH09504879A (de)
AU (1) AU6974094A (de)
DE (1) DE69420290T2 (de)
TW (1) TW314680B (de)
WO (1) WO1994029768A1 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6788460B2 (en) 1998-04-15 2004-09-07 Duke University Projection screen apparatus
US6483612B2 (en) 1998-04-15 2002-11-19 Duke University Projection screen apparatus including holographic optical element
US20030206342A1 (en) * 1993-05-12 2003-11-06 Bright View Technologies, Inc. Micro-lens array based light transmission screen
GB2287553A (en) * 1994-03-10 1995-09-20 Sharp Kk A method of manufacturing a diffuser
GB9520912D0 (en) * 1995-10-12 1995-12-13 Nashua Corp Improvements in or relating to projection screens and the like
US6525877B1 (en) 1995-10-12 2003-02-25 Nashua Corporation Projection screens and the like
GB9524220D0 (en) 1995-11-27 1996-01-31 Nashua Corp Improvements in or relating to projection screens and the like
US6525750B1 (en) 1996-03-08 2003-02-25 Duke University Projection display for computers
US6816306B2 (en) * 1998-04-15 2004-11-09 Bright View Technologies Inc. Micro-lens array based light transmitting screen with high resolution and low imaging artifacts
US6967779B2 (en) 1998-04-15 2005-11-22 Bright View Technologies, Inc. Micro-lens array with precisely aligned aperture mask and methods of producing same
US6829087B2 (en) 1998-04-15 2004-12-07 Bright View Technologies, Inc. Micro-lens array based light transmitting screen with tunable gain
GB9926315D0 (en) * 1999-11-05 2000-01-12 Microgrin Limited Diffusion or projection screen
GB9928166D0 (en) * 1999-11-29 2000-01-26 Microgrin Limited Reflective diffuser
US7092165B2 (en) * 2000-07-31 2006-08-15 Corning Incorporated Microlens arrays having high focusing efficiency
US7033736B2 (en) 2000-07-31 2006-04-25 Corning Incorporated Structured screens for controlled spreading of light
US6835535B2 (en) 2000-07-31 2004-12-28 Corning Incorporated Microlens arrays having high focusing efficiency
WO2002039185A1 (en) * 2000-11-10 2002-05-16 Durand Technology Limited Optical recording materials
JP2002318311A (ja) * 2001-04-20 2002-10-31 Clariant (Japan) Kk 制御された散乱・透過特性を有する光学フィルム
DE10161200A1 (de) * 2001-12-13 2003-06-26 Clariant Gmbh Kompositmaske zur Herstellung eines Diffusors
JP2003202415A (ja) * 2001-12-28 2003-07-18 Clariant Internatl Ltd 制御された散乱・透過特性を有する光学フィルムおよびそれを用いた液晶表示装置
DE10200760A1 (de) 2002-01-10 2003-07-24 Clariant Gmbh Nanokompositmaterial zur Herstellung von Brechzahlgradientenfolien
US6580560B1 (en) * 2002-02-01 2003-06-17 William R. Benner, Jr. Laser light projector having beam diffuser and associated methods
DE10213036A1 (de) * 2002-03-22 2003-10-02 Clariant Gmbh Kunststofffolie mit Mehrschicht-Interferenzbeschichtung
GB0306058D0 (en) * 2003-03-17 2003-04-23 Microsharp Corp Ltd Optically coded security markings
US20080007635A1 (en) * 2005-12-30 2008-01-10 Eastman Kodak Company System and method for reducing the appearance of inherent random optical patterns in a light-diffusing screen
US20090147651A1 (en) * 2007-12-07 2009-06-11 Vitali Prisacar Single beam system for writing data using energy distribution patterns

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1266522A (de) * 1968-08-21 1972-03-08
US3909111A (en) * 1974-02-27 1975-09-30 Rca Corp Controlled angle viewing screens by interference techniques
US4360372A (en) * 1980-11-10 1982-11-23 Northern Telecom Limited Fiber optic element for reducing speckle noise
US4674834A (en) * 1984-02-17 1987-06-23 Photon Devices, Ltd. Graphic input or output device including a fiber optic bundle with electronic means for providing coherence
ES2039622T3 (es) * 1987-06-01 1993-10-01 Sar Realisation Limited Un sistema de presentacion visual que utiliza una pantalla transmisora de la luz y un metodo para la produccion del mismo.
ATE155897T1 (de) * 1990-05-21 1997-08-15 Nashua Corp Mikrolinsen-bildschirme aus photopolymerisierbaren materialien und verfahren zur ihrer herstellung
EP0479490A3 (en) * 1990-10-02 1992-08-12 Physical Optics Corporation Volume holographic diffuser
ATE147221T1 (de) * 1991-03-08 1997-01-15 Durand Ltd Sichtvorrichtung

Also Published As

Publication number Publication date
US5695895A (en) 1997-12-09
EP0801767B1 (de) 1999-08-25
EP0801767A1 (de) 1997-10-22
WO1994029768A1 (en) 1994-12-22
DE69420290T2 (de) 1999-12-09
AU6974094A (en) 1995-01-03
TW314680B (de) 1997-09-01
JPH09504879A (ja) 1997-05-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MICROSHARP CORP.LTD., SWINDON, GB

8339 Ceased/non-payment of the annual fee