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.)
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Voigtlander AG
Original Assignee
Voigtlander AG
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Filing date
Publication date
Application filed by Voigtlander AGfiledCriticalVoigtlander AG
Application grantedgrantedCritical
Publication of FR1171174ApublicationCriticalpatent/FR1171174A/fr
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)
FR1171174D1957-04-121957-04-12Télémètre à coïncidence pour appareils photographiques
ExpiredFR1171174A
(fr)