BE419313A - - Google Patents

Info

Publication number
BE419313A
BE419313A BE419313DA BE419313A BE 419313 A BE419313 A BE 419313A BE 419313D A BE419313D A BE 419313DA BE 419313 A BE419313 A BE 419313A
Authority
BE
Belgium
Prior art keywords
screen
units
faces
image
contrasts
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE419313A publication Critical patent/BE419313A/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)
  • Overhead Projectors And Projection Screens (AREA)
BE419313D BE419313A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE419313A true BE419313A (enrdf_load_stackoverflow)

Family

ID=81630

Family Applications (1)

Application Number Title Priority Date Filing Date
BE419313D BE419313A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE419313A (enrdf_load_stackoverflow)

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