BE546173A - - Google Patents

Info

Publication number
BE546173A
BE546173A BE546173DA BE546173A BE 546173 A BE546173 A BE 546173A BE 546173D A BE546173D A BE 546173DA BE 546173 A BE546173 A BE 546173A
Authority
BE
Belgium
Prior art keywords
screen
light
translucent
opaque
absorbing layer
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE546173A publication Critical patent/BE546173A/fr

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories
    • G03B21/56Projection screens
    • G03B21/60Projection screens characterised by the nature of the surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)
BE546173D BE546173A (esLanguage)

Publications (1)

Publication Number Publication Date
BE546173A true BE546173A (esLanguage)

Family

ID=173567

Family Applications (1)

Application Number Title Priority Date Filing Date
BE546173D BE546173A (esLanguage)

Country Status (1)

Country Link
BE (1) BE546173A (esLanguage)

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