BE421546A - - Google Patents

Info

Publication number
BE421546A
BE421546A BE421546DA BE421546A BE 421546 A BE421546 A BE 421546A BE 421546D A BE421546D A BE 421546DA BE 421546 A BE421546 A BE 421546A
Authority
BE
Belgium
Prior art keywords
film
mirror
drum
window
shaft
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE421546A publication Critical patent/BE421546A/fr

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02Viewing or reading apparatus
    • G02B27/06Viewing or reading apparatus with moving picture effect

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Projection Apparatus (AREA)
BE421546D BE421546A (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
BE421546A true BE421546A (enrdf_load_stackoverflow)

Family

ID=83386

Family Applications (1)

Application Number Title Priority Date Filing Date
BE421546D BE421546A (enrdf_load_stackoverflow)

Country Status (1)

Country Link
BE (1) BE421546A (enrdf_load_stackoverflow)

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