Invention Grant
- Patent Title: Focal-plane shutter and optical apparatus
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Application No.: US15227478Application Date: 2016-08-03
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Publication No.: US09671678B2Publication Date: 2017-06-06
- Inventor: Shoichi Tokura , Seiichi Oishi
- Applicant: SEIKO Precision Inc.
- Applicant Address: JP Matsudo-Shi
- Assignee: SEIKO PRECISION INC.
- Current Assignee: SEIKO PRECISION INC.
- Current Assignee Address: JP Matsudo-Shi
- Agency: Brinks Gilson & Lione
- Priority: JP2015-163730 20150821
- Main IPC: G03B9/40
- IPC: G03B9/40 ; G02B27/00

Abstract:
A focal-plane shutter capable of suppressing production of foreign matter is provided. The focal-plane shutter includes a base plate, rear curtain drive arms, a blade that is driven by the rear curtain drive arms, and an elastically deformable cushioning member that comes into contact with the blade that moves from a retracted position to an unfolded position. The blade extends in a first direction. The rear curtain drive arms are swingable around the centers of swing motion provided on one side of the blade in the first direction. The cushioning member has a contact section that comes into contact with a side edge of the blade, a holding section that is arranged on the side opposite the blade with the contact section therebetween, and a connecting section that connects the contact section and the holding section to each other. The connecting section inclines with respect to a second direction perpendicular to the first direction and extends toward the centers of swing motion.
Public/Granted literature
- US20170052428A1 FOCAL-PLANE SHUTTER AND OPTICAL APPARATUS Public/Granted day:2017-02-23
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