FR712306A - shadow-producing screen for light projections and other applications and method of manufacture thereof - Google Patents

shadow-producing screen for light projections and other applications and method of manufacture thereof

Info

Publication number
FR712306A
FR712306A FR712306DA FR712306A FR 712306 A FR712306 A FR 712306A FR 712306D A FR712306D A FR 712306DA FR 712306 A FR712306 A FR 712306A
Authority
FR
France
Prior art keywords
shadow
manufacture
applications
light projections
producing 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
Other languages
French (fr)
Inventor
Eugene Astima
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 FR712306A publication Critical patent/FR712306A/en
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)
FR712306D 1930-05-14 1930-05-14 shadow-producing screen for light projections and other applications and method of manufacture thereof Expired FR712306A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR712306T 1930-05-14

Publications (1)

Publication Number Publication Date
FR712306A true FR712306A (en) 1931-09-30

Family

ID=9079229

Family Applications (1)

Application Number Title Priority Date Filing Date
FR712306D Expired FR712306A (en) 1930-05-14 1930-05-14 shadow-producing screen for light projections and other applications and method of manufacture thereof

Country Status (1)

Country Link
FR (1) FR712306A (en)

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