FR1188821A - Nouvel écran de projection - Google Patents

Nouvel écran de projection

Info

Publication number
FR1188821A
FR1188821A FR1188821DA FR1188821A FR 1188821 A FR1188821 A FR 1188821A FR 1188821D A FR1188821D A FR 1188821DA FR 1188821 A FR1188821 A FR 1188821A
Authority
FR
France
Prior art keywords
projection screen
new projection
new
screen
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
English (en)
Inventor
Robert Piat
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 FR1188821A publication Critical patent/FR1188821A/fr
Expired legal-status Critical Current

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
    • G03B21/54—Accessories
    • G03B21/56—Projection screens
    • G03B21/58—Projection screens collapsible, e.g. foldable; of variable area

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1188821D 1957-12-19 1957-12-19 Nouvel écran de projection Expired FR1188821A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1188821T 1957-12-19

Publications (1)

Publication Number Publication Date
FR1188821A true FR1188821A (fr) 1959-09-25

Family

ID=9665497

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1188821D Expired FR1188821A (fr) 1957-12-19 1957-12-19 Nouvel écran de projection

Country Status (1)

Country Link
FR (1) FR1188821A (fr)

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