BE826025A - Ecran de projection perfectionne - Google Patents

Ecran de projection perfectionne

Info

Publication number
BE826025A
BE826025A BE153782A BE153782A BE826025A BE 826025 A BE826025 A BE 826025A BE 153782 A BE153782 A BE 153782A BE 153782 A BE153782 A BE 153782A BE 826025 A BE826025 A BE 826025A
Authority
BE
Belgium
Prior art keywords
perfected
projection screen
projection
screen
perfected projection
Prior art date
Application number
BE153782A
Other languages
English (en)
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 filed Critical
Publication of BE826025A publication Critical patent/BE826025A/fr

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
    • 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)
  • Overhead Projectors And Projection Screens (AREA)
BE153782A 1974-02-27 1975-02-26 Ecran de projection perfectionne BE826025A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US446417A US3909111A (en) 1974-02-27 1974-02-27 Controlled angle viewing screens by interference techniques

Publications (1)

Publication Number Publication Date
BE826025A true BE826025A (fr) 1975-06-16

Family

ID=23772495

Family Applications (1)

Application Number Title Priority Date Filing Date
BE153782A BE826025A (fr) 1974-02-27 1975-02-26 Ecran de projection perfectionne

Country Status (11)

Country Link
US (1) US3909111A (fr)
JP (1) JPS50122210A (fr)
BE (1) BE826025A (fr)
CA (1) CA1034413A (fr)
CH (1) CH592319A5 (fr)
DE (1) DE2508152A1 (fr)
FR (1) FR2262324B1 (fr)
GB (1) GB1499135A (fr)
IT (1) IT1031148B (fr)
NL (1) NL7502275A (fr)
SE (1) SE7501850L (fr)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1462618A (en) * 1973-05-10 1977-01-26 Secretary Industry Brit Reducing the reflectance of surfaces to radiation
IL50125A (en) * 1976-07-26 1980-11-30 Yeda Res & Dev Holographic focusing screens
US4372639A (en) * 1981-06-03 1983-02-08 Hughes Aircraft Company Directional diffusing screen
US4682841A (en) * 1981-06-15 1987-07-28 Afian Viktor V Light radiation concentrator and method of making the same
JPS6155684A (ja) * 1984-08-27 1986-03-20 三菱レイヨン株式会社 光拡散装置
US4704666A (en) * 1986-08-15 1987-11-03 Davis Charles S Artificial light source utilizing a holographic optical element to control radiant light
US4722037A (en) * 1986-08-15 1988-01-26 Davis Charles S Holographic device for generating multiple beams of light
US4713738A (en) * 1986-08-15 1987-12-15 Davis Charles S Light fixture using a holographic optical reflector
BR8807538A (pt) * 1987-06-01 1990-03-27 Scient Applied Research Sar Sistema de exposicao tridimensional e processo de fabricacao do mesmo
US5322747A (en) * 1989-03-22 1994-06-21 Hugle William B Method of manufacturing an optical disc
US5258863A (en) * 1992-02-21 1993-11-02 Eastman Kodak Company Method for effecting illumination of an arbitrary aperture
FR2699289B1 (fr) * 1992-12-15 1995-01-06 Thomson Csf Ecran de projection holographique et procédé de réalisation.
WO1995034832A1 (fr) * 1992-12-15 1995-12-21 Thomson-Csf Ecran de projection holographique et procede de realisation
AU6974094A (en) * 1993-06-15 1995-01-03 Durand Limited Randomised mask for a diffusing screen
US5706062A (en) * 1993-06-20 1998-01-06 Unic View Ltd. Projector system including keystone correction
US5617152A (en) * 1993-06-20 1997-04-01 Unic View Ltd. Projector system for video and computer generated information
WO1995004303A1 (fr) * 1993-07-27 1995-02-09 Physical Optics Corporation Ecran de visualisation directionnel de grande luminosite
WO1995003935A1 (fr) * 1993-07-27 1995-02-09 Physical Optics Corporation Dispositif de destructuration et de mise en forme d'une source de lumiere
GB2287553A (en) 1994-03-10 1995-09-20 Sharp Kk A method of manufacturing a diffuser
WO1996007953A1 (fr) * 1994-09-06 1996-03-14 Philips Electronics N.V. Ecran de retroprojection
US5721630A (en) * 1996-03-12 1998-02-24 Polaroid Corporation High-efficiency reflective holographic diffuser and method for making thereof
CA2271815C (fr) * 1996-11-15 2010-01-19 Diffraction Ltd. Masque holographique en ligne destine au micro-usinage
EP0849649A3 (fr) * 1996-12-20 1999-05-12 Denso Corporation Hologramme et sa méthode de fabrication
US5796499A (en) * 1997-02-28 1998-08-18 Polaroid Corporation Transmission holographic diffuser made and used to effect lateral color constancy in rear screen projection display systems
US5999281A (en) * 1997-02-28 1999-12-07 Polaroid Corporation Holographic projection screen combining an elliptical holographic diffuser and a cylindrical light-collimator
DE10038749A1 (de) * 2000-08-09 2002-02-28 Fraunhofer Ges Forschung Verfahren und Vorrichtung zur Herstellung einer optisch antireflektierenden Oberfläche
US6934080B2 (en) * 2002-09-20 2005-08-23 Honeywell International, Inc. High efficiency viewing screen
US8004759B2 (en) * 2009-02-02 2011-08-23 Microsoft Corporation Diffusing screen
DE102022129523A1 (de) 2022-11-08 2024-05-08 Temicon Gmbh Optomechanisches Belichtungsverfahren zum Herstellen einer stochastisch strukturierten Oberfläche

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1161824A (en) * 1909-06-24 1915-11-23 Sinpar Company Photographic screen for half-tone work.
US1699224A (en) * 1922-05-23 1929-01-15 Comstock & Wescott Headlight screen or lens
US2364369A (en) * 1942-02-05 1944-12-05 Eastman Kodak Co Diffusing screen
US3802769A (en) * 1972-08-28 1974-04-09 Harris Intertype Corp Method and apparatus for unaided stereo viewing

Also Published As

Publication number Publication date
CH592319A5 (fr) 1977-10-31
FR2262324B1 (fr) 1978-09-29
GB1499135A (en) 1978-01-25
JPS50122210A (fr) 1975-09-25
DE2508152A1 (de) 1975-08-28
NL7502275A (nl) 1975-08-29
US3909111A (en) 1975-09-30
FR2262324A1 (fr) 1975-09-19
SE7501850L (fr) 1975-08-28
AU7843275A (en) 1976-08-26
CA1034413A (fr) 1978-07-11
IT1031148B (it) 1979-04-30

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