FR894527A - Improvements to focusing devices for photographic or cinematographic cameras - Google Patents

Improvements to focusing devices for photographic or cinematographic cameras

Info

Publication number
FR894527A
FR894527A FR894527DA FR894527A FR 894527 A FR894527 A FR 894527A FR 894527D A FR894527D A FR 894527DA FR 894527 A FR894527 A FR 894527A
Authority
FR
France
Prior art keywords
photographic
focusing devices
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
Gaetano Ventimiglia
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 FR894527A publication Critical patent/FR894527A/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
    • G03B13/20—Rangefinders coupled with focusing arrangements, e.g. adjustment of rangefinder automatically focusing camera

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR894527D 1942-04-30 1943-05-06 Improvements to focusing devices for photographic or cinematographic cameras Expired FR894527A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT894527X 1942-04-30

Publications (1)

Publication Number Publication Date
FR894527A true FR894527A (en) 1944-12-27

Family

ID=11331532

Family Applications (1)

Application Number Title Priority Date Filing Date
FR894527D Expired FR894527A (en) 1942-04-30 1943-05-06 Improvements to focusing devices for photographic or cinematographic cameras

Country Status (1)

Country Link
FR (1) FR894527A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152214A (en) * 1962-02-19 1964-10-06 Bausch & Lomb Optical system for zoom type telescope having mirror and finder objectives
US3475086A (en) * 1966-02-10 1969-10-28 D 150 Inc Cinema system utilizing a deeply curved screen and a mask for providing an illusion

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152214A (en) * 1962-02-19 1964-10-06 Bausch & Lomb Optical system for zoom type telescope having mirror and finder objectives
US3475086A (en) * 1966-02-10 1969-10-28 D 150 Inc Cinema system utilizing a deeply curved screen and a mask for providing an illusion

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