FR1052349A - Autofocus device of a camera based on distance - Google Patents

Autofocus device of a camera based on distance

Info

Publication number
FR1052349A
FR1052349A FR1052349DA FR1052349A FR 1052349 A FR1052349 A FR 1052349A FR 1052349D A FR1052349D A FR 1052349DA FR 1052349 A FR1052349 A FR 1052349A
Authority
FR
France
Prior art keywords
distance
camera based
autofocus device
autofocus
camera
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
Pierre De Chateaumorand
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 FR1052349A publication Critical patent/FR1052349A/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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/18—Focusing aids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1052349D 1952-03-12 1952-03-12 Autofocus device of a camera based on distance Expired FR1052349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1052349T 1952-03-12

Publications (1)

Publication Number Publication Date
FR1052349A true FR1052349A (en) 1954-01-22

Family

ID=9595235

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1052349D Expired FR1052349A (en) 1952-03-12 1952-03-12 Autofocus device of a camera based on distance

Country Status (1)

Country Link
FR (1) FR1052349A (en)

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