FR783916A - Improvements to projection screens - Google Patents

Improvements to projection screens

Info

Publication number
FR783916A
FR783916A FR783916DA FR783916A FR 783916 A FR783916 A FR 783916A FR 783916D A FR783916D A FR 783916DA FR 783916 A FR783916 A FR 783916A
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
French (fr)
Inventor
Mendoza
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 FR783916A publication Critical patent/FR783916A/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)
FR783916D 1934-08-21 1935-01-08 Improvements to projection screens Expired FR783916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
MX783916X 1934-08-21

Publications (1)

Publication Number Publication Date
FR783916A true FR783916A (en) 1935-07-19

Family

ID=19743044

Family Applications (1)

Application Number Title Priority Date Filing Date
FR783916D Expired FR783916A (en) 1934-08-21 1935-01-08 Improvements to projection screens

Country Status (1)

Country Link
FR (1) FR783916A (en)

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