FR1008438A - Viseur optique - Google Patents

Viseur optique

Info

Publication number
FR1008438A
FR1008438A FR1008438DA FR1008438A FR 1008438 A FR1008438 A FR 1008438A FR 1008438D A FR1008438D A FR 1008438DA FR 1008438 A FR1008438 A FR 1008438A
Authority
FR
France
Prior art keywords
optical viewfinder
viewfinder
optical
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
Roger-Louis Doyen
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 FR1008438A publication Critical patent/FR1008438A/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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/02—Viewfinders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1008438D 1950-01-17 1950-01-17 Viseur optique Expired FR1008438A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1008438T 1950-01-17

Publications (1)

Publication Number Publication Date
FR1008438A true FR1008438A (fr) 1952-05-19

Family

ID=9567343

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1008438D Expired FR1008438A (fr) 1950-01-17 1950-01-17 Viseur optique

Country Status (1)

Country Link
FR (1) FR1008438A (fr)

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