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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kamera und Kinowerke Dresden VEB
Original Assignee
Kamera und Kinowerke Dresden VEB
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Filing date
Publication date
Application filed by Kamera und Kinowerke Dresden VEBfiledCriticalKamera und Kinowerke Dresden VEB
Priority to FR845972ApriorityCriticalpatent/FR1278244A/fr
Application grantedgrantedCritical
Publication of FR1278244ApublicationCriticalpatent/FR1278244A/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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/53—Means for automatic focusing, e.g. to compensate thermal effects
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR845972A1960-12-051960-12-05Dispositif de réglage de l'objectif pour projecteurs de diapositives
ExpiredFR1278244A
(fr)