FR560168A - Perfectionnements aux écrans de projection - Google Patents

Perfectionnements aux écrans de projection

Info

Publication number
FR560168A
FR560168A FR560168DA FR560168A FR 560168 A FR560168 A FR 560168A FR 560168D A FR560168D A FR 560168DA FR 560168 A FR560168 A FR 560168A
Authority
FR
France
Prior art keywords
projection screens
screens
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
Georges Perrin
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 FR560168A publication Critical patent/FR560168A/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
    • G03B21/60—Projection screens characterised by the nature of the surface
    • G03B21/62—Translucent screens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR560168D 1922-03-21 1922-03-21 Perfectionnements aux écrans de projection Expired FR560168A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR560168T 1922-03-21

Publications (1)

Publication Number Publication Date
FR560168A true FR560168A (fr) 1923-09-29

Family

ID=8942731

Family Applications (1)

Application Number Title Priority Date Filing Date
FR560168D Expired FR560168A (fr) 1922-03-21 1922-03-21 Perfectionnements aux écrans de projection

Country Status (1)

Country Link
FR (1) FR560168A (fr)

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