MIRROR-DRIVING APPARATUS AND PHOTOGRAPHING APPARATUS

PROBLEM TO BE SOLVED: To prevent deterioration in the efficiency of a mirror driving mechanism and deterioration in the driving accuracy of the mechanism due to the efficiency deterioration of cam lift angular distribution at the idle traveling of a cam gear, after stopping the drive of a motor, reg...

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Bibliographische Detailangaben
1. Verfasser:	TOMATSU AKIRA
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To prevent deterioration in the efficiency of a mirror driving mechanism and deterioration in the driving accuracy of the mechanism due to the efficiency deterioration of cam lift angular distribution at the idle traveling of a cam gear, after stopping the drive of a motor, regarding a double-lift cam system mirror driving mechanism. SOLUTION: In the mirror-driving mechanism using the double-lift cam, that is, a shutter charge cam (12a) and a holding release cam (12b), the holding release cam is provided with a cam for suppressing the idle traveling of the cam gear, then the driving efficiency of the mirror driving mechanism is enhanced, and also, the control accuracy of the mirror driving mechanism is enhanced. COPYRIGHT: (C)2006,JPO&NCIPI