FR1022825A - Projecteur double symétrique - Google Patents

Projecteur double symétrique

Info

Publication number
FR1022825A
FR1022825A FR1022825DA FR1022825A FR 1022825 A FR1022825 A FR 1022825A FR 1022825D A FR1022825D A FR 1022825DA FR 1022825 A FR1022825 A FR 1022825A
Authority
FR
France
Prior art keywords
projector
double symmetrical
symmetrical
double
symmetrical projector
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
Rene-Henri Denoux
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 FR1022825A publication Critical patent/FR1022825A/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
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • 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
    • G03B23/00—Devices for changing pictures in viewing apparatus or projectors
    • G03B23/18—Devices for changing pictures in viewing apparatus or projectors with fade-in and fade-out effects

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1022825D 1950-04-03 1950-04-03 Projecteur double symétrique Expired FR1022825A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1022825T 1950-04-03

Publications (1)

Publication Number Publication Date
FR1022825A true FR1022825A (fr) 1953-03-10

Family

ID=9577892

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1022825D Expired FR1022825A (fr) 1950-04-03 1950-04-03 Projecteur double symétrique

Country Status (1)

Country Link
FR (1) FR1022825A (fr)

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