Title:
BLADE DRIVING DEVICE, FOCAL PLANE SHUTTER DEVICE, AND IMAGING APPARATUS
Document Type and Number:
Japanese Patent JP2016095467
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a blade driving device capable of easily stopping the travel of a blade, a focal plane shutter device, and an imaging apparatus.SOLUTION: The blade driving device includes an aperture forming member which includes an aperture through which light passes, a light quantity adjustment blade which adjusts a light quantity in the aperture of the aperture forming member, and a blade driving member which transmits power to the light quantity adjustment blade. A movable side magnetic part made of a magnetic material is provided in at least a part of the blade driving member and a fixed side magnetic part is provided in correspondence to the magnetic part of the blade driving member in the outside area of the aperture of the aperture forming member. In the outside area of the aperture of the aperture forming member, the fixed side magnetic part of the aperture forming member magnetically acts on the movable side magnetic part of a blade driving arm being driven, to restrict the drive of the blade driving arm.SELECTED DRAWING: Figure 1
Inventors:
SEKIYA YOSHINORI
Application Number:
JP2014232840A
Publication Date:
May 26, 2016
Filing Date:
November 17, 2014
Export Citation:
Assignee:
CANON DENSHI KK
International Classes:
G03B9/36
Domestic Patent References:
| JPS5683725A | 1981-07-08 | |||
| JP2004325553A | 2004-11-18 | |||
| JPS4958341U | 1974-05-23 | |||
| JP2015068906A | 2015-04-13 | |||
| JP2008070590A | 2008-03-27 | |||
| JP2006284641A | 2006-10-19 |
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