BE539522A - - Google Patents

Info

Publication number
BE539522A
BE539522A BE539522DA BE539522A BE 539522 A BE539522 A BE 539522A BE 539522D A BE539522D A BE 539522DA BE 539522 A BE539522 A BE 539522A
Authority
BE
Belgium
Prior art keywords
less
powder
essentially
threads
appearance
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE539522A publication Critical patent/BE539522A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Woven Fabrics (AREA)
BE539522D BE539522A (OSRAM)

Publications (1)

Publication Number Publication Date
BE539522A true BE539522A (OSRAM)

Family

ID=169204

Family Applications (1)

Application Number Title Priority Date Filing Date
BE539522D BE539522A (OSRAM)

Country Status (1)

Country Link
BE (1) BE539522A (OSRAM)

Similar Documents

Publication Publication Date Title
US2731749A (en) Means of displaying pictures
FR2795862A1 (fr) Masque perfore tendu et tube a rayons cathodiques couleur utilisant celui-ci
BE539522A (OSRAM)
EP0159594B1 (fr) Appareil d'éclairage à haut pouvoir de diffusion
DE19732852A1 (de) Fahrzeug-Scheinwerfer
US5971544A (en) Color key surface and stage
US10564518B2 (en) Environmental lighting system and method
WO2001031398A1 (fr) Ecran d'image haute definition
US1759777A (en) Projection system
US1846357A (en) Motion picture screen
DE1797207C2 (de) Einrichtung zur photographischen Aufnahme von Modellen vor einem durch Projektion erzeugten Hintergrund
US1216835A (en) Projection apparatus.
US1128867A (en) Screen for moving pictures.
US1686880A (en) Picture screen
FR2477977A1 (fr) Decors lumineux a jeux de miroirs
US1372620A (en) Screen for exhibiting moving pictures
BE546215A (OSRAM)
DE384637C (de) Lichtreflektoren
DE678016C (de) Vorrichtung zum Kontaktkopieren von Linsenrasterfilmen auf Linsenrasterfilme
DE3421521A1 (de) Projektionstraeger (-wand,-scheibe,-folie)
AT128579B (de) Projektionsschirm.
US997899A (en) Projection-screen.
JPS5612630A (en) Irradiating device
US1922636A (en) Motion picture screen
DE409921C (de) Beleuchtungsvorrichtung fuer photographische Wiedergabekammern