FR712001A - Autofocus device for photographic or cinematographic cameras - Google Patents

Autofocus device for photographic or cinematographic cameras

Info

Publication number
FR712001A
FR712001A FR712001DA FR712001A FR 712001 A FR712001 A FR 712001A FR 712001D A FR712001D A FR 712001DA FR 712001 A FR712001 A FR 712001A
Authority
FR
France
Prior art keywords
photographic
autofocus device
cinematographic cameras
cinematographic
cameras
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
Robert Alkan
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 FR712001A publication Critical patent/FR712001A/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
    • G03B19/00—Cameras
    • G03B19/18—Motion-picture cameras

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR712001D 1930-06-06 1930-06-06 Autofocus device for photographic or cinematographic cameras Expired FR712001A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR712001T 1930-06-06

Publications (1)

Publication Number Publication Date
FR712001A true FR712001A (en) 1931-09-23

Family

ID=9077998

Family Applications (1)

Application Number Title Priority Date Filing Date
FR712001D Expired FR712001A (en) 1930-06-06 1930-06-06 Autofocus device for photographic or cinematographic cameras

Country Status (1)

Country Link
FR (1) FR712001A (en)

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