FR1177260A - Indirect vision device for projection rooms - Google Patents

Indirect vision device for projection rooms

Info

Publication number
FR1177260A
FR1177260A FR1177260DA FR1177260A FR 1177260 A FR1177260 A FR 1177260A FR 1177260D A FR1177260D A FR 1177260DA FR 1177260 A FR1177260 A FR 1177260A
Authority
FR
France
Prior art keywords
vision device
indirect vision
projection rooms
rooms
projection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Other languages
French (fr)
Inventor
Rene De Mot
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Application granted granted Critical
Publication of FR1177260A publication Critical patent/FR1177260A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63J—DEVICES FOR THEATRES, CIRCUSES, OR THE LIKE; CONJURING APPLIANCES OR THE LIKE
    • A63J99/00—Subject matter not provided for in other groups of this subclass
    • 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)
FR1177260D 1956-06-20 1957-06-12 Indirect vision device for projection rooms Expired FR1177260A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE1177260X 1956-06-20

Publications (1)

Publication Number Publication Date
FR1177260A true FR1177260A (en) 1959-04-22

Family

ID=3894151

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1177260D Expired FR1177260A (en) 1956-06-20 1957-06-12 Indirect vision device for projection rooms

Country Status (1)

Country Link
FR (1) FR1177260A (en)

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