BE423197A - - Google Patents

Info

Publication number
BE423197A
BE423197A BE423197DA BE423197A BE 423197 A BE423197 A BE 423197A BE 423197D A BE423197D A BE 423197DA BE 423197 A BE423197 A BE 423197A
Authority
BE
Belgium
Prior art keywords
screen
projection
transparent
relief
images
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE423197A publication Critical patent/BE423197A/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
    • G03B21/60—Projection screens characterised by the nature of the surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
BE423197D BE423197A (enrdf_load_html_response)

Publications (1)

Publication Number Publication Date
BE423197A true BE423197A (enrdf_load_html_response)

Family

ID=84710

Family Applications (1)

Application Number Title Priority Date Filing Date
BE423197D BE423197A (enrdf_load_html_response)

Country Status (1)

Country Link
BE (1) BE423197A (enrdf_load_html_response)

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