FR1107591A - Focusing device for cameras or the like - Google Patents

Focusing device for cameras or the like

Info

Publication number
FR1107591A
FR1107591A FR1107591DA FR1107591A FR 1107591 A FR1107591 A FR 1107591A FR 1107591D A FR1107591D A FR 1107591DA FR 1107591 A FR1107591 A FR 1107591A
Authority
FR
France
Prior art keywords
cameras
focusing device
focusing
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
Marcel Tourret
Rene Royer
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 FR1107591A publication Critical patent/FR1107591A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/40—Optical focusing aids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR1107591D 1954-06-18 1954-06-18 Focusing device for cameras or the like Expired FR1107591A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1107591T 1954-06-18

Publications (1)

Publication Number Publication Date
FR1107591A true FR1107591A (en) 1956-01-03

Family

ID=9624503

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1107591D Expired FR1107591A (en) 1954-06-18 1954-06-18 Focusing device for cameras or the like

Country Status (1)

Country Link
FR (1) FR1107591A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3149547A (en) * 1961-01-05 1964-09-22 Kamera & Kinowerke Dresden Veb Focusing plate for a photographic camera viewfinder
US3182576A (en) * 1960-07-07 1965-05-11 Voigtlaender Ag Reflex camera viewfinder including composite setting disk with fresnel lens surfaces and focusing wedges
US3188931A (en) * 1961-07-25 1965-06-15 Agfa Ag Viewfinder structures
US3218948A (en) * 1961-08-04 1965-11-23 Zeiss Stiftung Viewfinder-rangefinder device for mirror reflex cameras, particularly for motion picture cameras
DE1207786B (en) * 1960-06-16 1965-12-23 Elbe Kamera Gmbh Reflex viewfinder arrangement for photographic cameras
US4771304A (en) * 1979-03-05 1988-09-13 Canon Kabushiki Kaisha Focusing screen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1207786B (en) * 1960-06-16 1965-12-23 Elbe Kamera Gmbh Reflex viewfinder arrangement for photographic cameras
US3182576A (en) * 1960-07-07 1965-05-11 Voigtlaender Ag Reflex camera viewfinder including composite setting disk with fresnel lens surfaces and focusing wedges
US3149547A (en) * 1961-01-05 1964-09-22 Kamera & Kinowerke Dresden Veb Focusing plate for a photographic camera viewfinder
US3188931A (en) * 1961-07-25 1965-06-15 Agfa Ag Viewfinder structures
US3218948A (en) * 1961-08-04 1965-11-23 Zeiss Stiftung Viewfinder-rangefinder device for mirror reflex cameras, particularly for motion picture cameras
US4771304A (en) * 1979-03-05 1988-09-13 Canon Kabushiki Kaisha Focusing screen

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