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FR1118637A - projection screen - Google Patents

projection screen

Info

Publication number
FR1118637A
FR1118637A FR1118637DA FR1118637A FR 1118637 A FR1118637 A FR 1118637A FR 1118637D A FR1118637D A FR 1118637DA FR 1118637 A FR1118637 A FR 1118637A
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
Other languages
French (fr)
Inventor
Edgar Gretener
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 FR1118637A publication Critical patent/FR1118637A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1118637D 1954-02-10 1955-02-02 projection screen Expired FR1118637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1118637X 1954-02-10

Publications (1)

Publication Number Publication Date
FR1118637A true FR1118637A (en) 1956-06-08

Family

ID=4558521

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1118637D Expired FR1118637A (en) 1954-02-10 1955-02-02 projection screen

Country Status (1)

Country Link
FR (1) FR1118637A (en)

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