Title:
A focal-plane shutter, an imaging device, and a digital camera
Document Type and Number:
Japanese Patent JP5991780
Kind Code:
B2
Abstract:
A focal plane shutter includes: a board including an opening; a leading shutter and a trailing shutter opening and closing the opening; first and second biasing members respectively biasing the leading shutter and the trailing shutter to move away from the opening; a first actuator causing the leading shutter to move from a position to close the opening to a position to recede from the opening while the leading shutter is assisted by a biasing force of the first biasing member in an exposure operation; and a second actuator causing the trailing shutter to move from a position to recede from the opening to a position to close the opening against a biasing force of the second biasing member in the exposure operation, wherein drive torque of the first actuator is smaller than that of the second actuator.
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Inventors:
Hiroshi Takahashi
Murata
Seiichi Oishi
Mitsuru Suzuki
Murata
Seiichi Oishi
Mitsuru Suzuki
Application Number:
JP2012136062A
Publication Date:
September 14, 2016
Filing Date:
June 15, 2012
Export Citation:
Assignee:
Seiko Precision Co., Ltd.
International Classes:
G03B9/36
Domestic Patent References:
| JP11258656A | ||||
| JP2005304221A | ||||
| JP10068982A | ||||
| JP2001264846A | ||||
| JP2004138690A | ||||
| JP6069944U | ||||
| JP2008225140A | ||||
| JP7020523A | ||||
| JP2003005252A |
Attorney, Agent or Firm:
Shuhei Katayama
Kikuchi
Kikuchi