BE411997A - - Google Patents

Info

Publication number
BE411997A
BE411997A BE411997DA BE411997A BE 411997 A BE411997 A BE 411997A BE 411997D A BE411997D A BE 411997DA BE 411997 A BE411997 A BE 411997A
Authority
BE
Belgium
Prior art keywords
screen
window
darkroom
mirrors
enlarged
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE411997A publication Critical patent/BE411997A/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
    • G03B21/10—Projectors with built-in or built-on screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Studio Devices (AREA)
  • Projection-Type Copiers In General (AREA)
  • Lenses (AREA)
BE411997D BE411997A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
BE411997A true BE411997A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=75839

Family Applications (1)

Application Number Title Priority Date Filing Date
BE411997D BE411997A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
BE (1) BE411997A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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