ATE171549T1 - Verteiler von elektromagnetischer strahlung, insbesondere projektionsschirm - Google Patents

Verteiler von elektromagnetischer strahlung, insbesondere projektionsschirm

Info

Publication number
ATE171549T1
ATE171549T1 AT90403746T AT90403746T ATE171549T1 AT E171549 T1 ATE171549 T1 AT E171549T1 AT 90403746 T AT90403746 T AT 90403746T AT 90403746 T AT90403746 T AT 90403746T AT E171549 T1 ATE171549 T1 AT E171549T1
Authority
AT
Austria
Prior art keywords
mean
radiation
solid angle
distributor
optically
Prior art date
Application number
AT90403746T
Other languages
English (en)
Inventor
Pierre Malifaud
Gerard Marcel Louis Vuillaume
Original Assignee
Pierre Malifaud
Vuillaume Gerard Marcel L
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 Pierre Malifaud, Vuillaume Gerard Marcel L filed Critical Pierre Malifaud
Application granted granted Critical
Publication of ATE171549T1 publication Critical patent/ATE171549T1/de

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
    • G03B21/602—Lenticular screens
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Optical Communication System (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Particle Accelerators (AREA)
AT90403746T 1990-12-21 1990-12-21 Verteiler von elektromagnetischer strahlung, insbesondere projektionsschirm ATE171549T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP90403746A EP0493635B1 (de) 1990-12-21 1990-12-21 Verteiler von elektromagnetischer Strahlung, insbesondere Projektionsschirm
CA002033263A CA2033263C (fr) 1990-12-21 1990-12-27 Repartiteur de rayonnement electromagnetique, notamment ecran de projection

Publications (1)

Publication Number Publication Date
ATE171549T1 true ATE171549T1 (de) 1998-10-15

Family

ID=25674428

Family Applications (1)

Application Number Title Priority Date Filing Date
AT90403746T ATE171549T1 (de) 1990-12-21 1990-12-21 Verteiler von elektromagnetischer strahlung, insbesondere projektionsschirm

Country Status (5)

Country Link
EP (1) EP0493635B1 (de)
AT (1) ATE171549T1 (de)
CA (1) CA2033263C (de)
DE (1) DE69032676T2 (de)
ES (1) ES2121749T3 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2381614A (en) * 1939-03-25 1945-08-07 Moller Rolf Projection screen
US2804801A (en) * 1951-11-23 1957-09-03 William T Snyder Projection screens
US2763184A (en) * 1952-06-23 1956-09-18 Jackson James Gordon Projection screens
US2974565A (en) * 1958-05-12 1961-03-14 Wendell S Miller Projection system using screen with facets
US4241980A (en) * 1978-05-24 1980-12-30 William C. McGeehon Beam emission control means
FR2463427A1 (fr) * 1979-08-10 1981-02-20 Malifaud Pierre Ecran directif pour la projection d'images en haute fidelite optique

Also Published As

Publication number Publication date
CA2033263A1 (fr) 1992-06-28
DE69032676T2 (de) 1999-06-10
DE69032676D1 (de) 1998-10-29
EP0493635B1 (de) 1998-09-23
ES2121749T3 (es) 1998-12-16
EP0493635A1 (de) 1992-07-08
CA2033263C (fr) 1997-05-06

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Legal Events

Date Code Title Description
REN Ceased due to non-payment of the annual fee