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.: US13311940Application Date: 2011-12-06
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Publication No.: US08376636B2Publication Date: 2013-02-19
- Inventor: Hiroshi Takahashi , Yoichi Nakano
- Applicant: Hiroshi Takahashi , Yoichi Nakano
- 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: JP2010-103647 20100428
- Main IPC: G03B9/08
- IPC: G03B9/08

Abstract:
A focal plane shutter includes: an electromagnet; a board including an opening; blades capable of opening and closing the opening; a drive member holding an iron piece adsorbed to the electromagnet and driving the blades, the drive member being movable such that the iron piece moves toward and away from the electromagnet and being biased by a spring such that the iron piece moves away from the electromagnet; and a holding board facing the board and including a pair of sandwiching portions elastically deformable and holding and sandwiching the electromagnet. The electromagnet includes a restriction portion engaging the board and restricting a movement of the electromagnet in a direction where the iron piece moves away from the electromagnet.
Public/Granted literature
- US20120087646A1 FOCAL-PLANE SHUTTER AND OPTICAL APPARATUS Public/Granted day:2012-04-12
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