BE345333A - - Google Patents

Info

Publication number
BE345333A
BE345333A BE345333DA BE345333A BE 345333 A BE345333 A BE 345333A BE 345333D A BE345333D A BE 345333DA BE 345333 A BE345333 A BE 345333A
Authority
BE
Belgium
Prior art keywords
order
projection
cloud
display window
light
Prior art date
Application number
Other languages
English (en)
Dutch (nl)
Publication of BE345333A publication Critical patent/BE345333A/nl

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F19/00—Advertising or display means not otherwise provided for
    • G09F19/12—Advertising or display means not otherwise provided for using special optical effects
    • G09F19/18—Advertising or display means not otherwise provided for using special optical effects involving the use of optical projection means, e.g. projection of images on clouds

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Marketing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Projection Apparatus (AREA)
BE345333D BE345333A (pl)

Publications (1)

Publication Number Publication Date
BE345333A true BE345333A (pl)

Family

ID=21383

Family Applications (1)

Application Number Title Priority Date Filing Date
BE345333D BE345333A (pl)

Country Status (1)

Country Link
BE (1) BE345333A (pl)

Similar Documents

Publication Publication Date Title
GB2101767A (en) A display system comprising a screen and two speed projectors for illuminating respective parts thereof
BE345333A (pl)
US2045120A (en) Projection of motion pictures
US2530843A (en) Photographic enlarger
US1750910A (en) Projecting apparatus
US2419216A (en) Illuminated display device having animation effects
US1656110A (en) Photo-electric sign
US2413288A (en) Picture projection apparatus for stills and for moving pictures
US2113194A (en) Projecting apparatus
US1794147A (en) Projecting apparatus
US1621741A (en) Projecting system for cinematographs
US2287345A (en) Optical projection device
US2009816A (en) Optical reversing system
US3176581A (en) Still picture projector
US1027448A (en) Projecting device.
US1626786A (en) Film attachment for motion-picture projectors
DE3009791C2 (de) Laufbildprojektor oder -betrachter mit einer Stillstandsprojektionseinrichtung
US4329045A (en) Illumination system for microfilm printer
US1787595A (en) Luminous sign
US1684304A (en) Cooling and fire-prevention apparatus for motion-picture projectors
SE438212B (sv) Mikrofilmanordning for informationssekring vid automatisk dokumentbehandling med en levande-bild-kamera
US1890168A (en) Dummy rifle
GB320627A (en) Improvements in or relating to television apparatus and the like
Wood Lecture Demonstration of Resonance Radiation of Sodium
US2030812A (en) Projection system