FR68222E - cinematograph diffuser screen - Google Patents

cinematograph diffuser screen

Info

Publication number
FR68222E
FR68222E FR68222DA FR68222E FR 68222 E FR68222 E FR 68222E FR 68222D A FR68222D A FR 68222DA FR 68222 E FR68222 E FR 68222E
Authority
FR
France
Prior art keywords
cinematograph
diffuser screen
diffuser
screen
cinematograph diffuser
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
Jean David
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 FR68222E publication Critical patent/FR68222E/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
    • G03B21/606—Projection screens characterised by the nature of the surface for relief projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR68222D 1955-10-07 1955-10-07 cinematograph diffuser screen Expired FR68222E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR68222T 1955-10-07

Publications (1)

Publication Number Publication Date
FR68222E true FR68222E (en) 1958-04-09

Family

ID=8700307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR68222D Expired FR68222E (en) 1955-10-07 1955-10-07 cinematograph diffuser screen

Country Status (1)

Country Link
FR (1) FR68222E (en)

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