Invention Grant
- Patent Title: Focal plane shutter and optical apparatus
- Patent Title (中): 焦平面快门和光学仪器
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Application No.: US13291215Application Date: 2011-11-08
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Publication No.: US08485742B2Publication Date: 2013-07-16
- Inventor: Yoichi Nakano , Makoto Mikami , Chiaki Nemoto
- Applicant: Yoichi Nakano , Makoto Mikami , Chiaki Nemoto
- Applicant Address: JP Narashino-Shi
- Assignee: Seiko Precision Inc.
- Current Assignee: Seiko Precision Inc.
- Current Assignee Address: JP Narashino-Shi
- Agency: Kratz, Quintos & Hanson, LLP
- Priority: JP2010-265797 20101129
- Main IPC: G03B9/08
- IPC: G03B9/08 ; G03B9/32

Abstract:
A focal plane shutter includes: a board including an opening; blades capable of opening and closing the opening; a drive lever swingably supported, holding a movable iron piece and driving the blades; a self-holding type solenoid capable of adsorbing to the movable iron piece by a given attraction force in a non-energized state, and reducing the given attraction force in an energized state; a biasing member biasing the drive lever to move the drive lever away from the self-holding type solenoid; and a set member moving the drive lever to abut the drive lever with the self-holding type solenoid, wherein the self-holding type solenoid is energized to reduce the given attraction force when the drive lever is swung by the set member to abut the movable iron piece with the self-holding type solenoid.
Public/Granted literature
- US20120134660A1 FOCAL PLANE SHUTTER AND OPTICAL APPARATUS Public/Granted day:2012-05-31
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