BE440657A - - Google Patents

Info

Publication number
BE440657A
BE440657A BE440657DA BE440657A BE 440657 A BE440657 A BE 440657A BE 440657D A BE440657D A BE 440657DA BE 440657 A BE440657 A BE 440657A
Authority
BE
Belgium
Prior art keywords
lamp
shutter
projection
mercury lamp
cylindrical shutter
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE440657A publication Critical patent/BE440657A/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
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • 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
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2026—Gas discharge type light sources, e.g. arcs

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
BE440657D BE440657A (de)

Publications (1)

Publication Number Publication Date
BE440657A true BE440657A (de)

Family

ID=98364

Family Applications (1)

Application Number Title Priority Date Filing Date
BE440657D BE440657A (de)

Country Status (1)

Country Link
BE (1) BE440657A (de)

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