FR1246509A - écran de projection - Google Patents

écran de projection

Info

Publication number
FR1246509A
FR1246509A FR816432A FR816432A FR1246509A FR 1246509 A FR1246509 A FR 1246509A FR 816432 A FR816432 A FR 816432A FR 816432 A FR816432 A FR 816432A FR 1246509 A FR1246509 A FR 1246509A
Authority
FR
France
Prior art keywords
projection screen
projection
screen
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
FR816432A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EMEL ETS
Original Assignee
EMEL ETS
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 by EMEL ETS filed Critical EMEL ETS
Priority to FR816432A priority Critical patent/FR1246509A/fr
Application granted granted Critical
Publication of FR1246509A publication Critical patent/FR1246509A/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)
FR816432A 1960-01-22 1960-01-22 écran de projection Expired FR1246509A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR816432A FR1246509A (fr) 1960-01-22 1960-01-22 écran de projection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR816432A FR1246509A (fr) 1960-01-22 1960-01-22 écran de projection

Publications (1)

Publication Number Publication Date
FR1246509A true FR1246509A (fr) 1960-11-18

Family

ID=8724195

Family Applications (1)

Application Number Title Priority Date Filing Date
FR816432A Expired FR1246509A (fr) 1960-01-22 1960-01-22 écran de projection

Country Status (1)

Country Link
FR (1) FR1246509A (fr)

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