FR1063565A - Improvement in projection devices - Google Patents

Improvement in projection devices

Info

Publication number
FR1063565A
FR1063565A FR1063565DA FR1063565A FR 1063565 A FR1063565 A FR 1063565A FR 1063565D A FR1063565D A FR 1063565DA FR 1063565 A FR1063565 A FR 1063565A
Authority
FR
France
Prior art keywords
improvement
projection devices
projection
devices
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
Alberic Plocq
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 FR1063565A publication Critical patent/FR1063565A/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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1063565D 1952-09-23 1952-09-23 Improvement in projection devices Expired FR1063565A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1063565T 1952-09-23

Publications (1)

Publication Number Publication Date
FR1063565A true FR1063565A (en) 1954-05-04

Family

ID=9601222

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1063565D Expired FR1063565A (en) 1952-09-23 1952-09-23 Improvement in projection devices

Country Status (1)

Country Link
FR (1) FR1063565A (en)

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