BE488115A - - Google Patents

Info

Publication number
BE488115A
BE488115A BE488115DA BE488115A BE 488115 A BE488115 A BE 488115A BE 488115D A BE488115D A BE 488115DA BE 488115 A BE488115 A BE 488115A
Authority
BE
Belgium
Prior art keywords
screen
less
group
variant
held together
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE488115A publication Critical patent/BE488115A/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
    • G03B21/606Projection screens characterised by the nature of the surface for relief projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Woven Fabrics (AREA)
BE488115D BE488115A (OSRAM)

Publications (1)

Publication Number Publication Date
BE488115A true BE488115A (OSRAM)

Family

ID=133390

Family Applications (1)

Application Number Title Priority Date Filing Date
BE488115D BE488115A (OSRAM)

Country Status (1)

Country Link
BE (1) BE488115A (OSRAM)

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