Invention Grant
US09304374B2 Focal-plane shutter, optical device, and method for adjusting current for focal-plane shutter
有权
焦平面快门,光学装置以及用于调整焦平面快门电流的方法
- Patent Title: Focal-plane shutter, optical device, and method for adjusting current for focal-plane shutter
- Patent Title (中): 焦平面快门,光学装置以及用于调整焦平面快门电流的方法
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Application No.: US14862420Application Date: 2015-09-23
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Publication No.: US09304374B2Publication Date: 2016-04-05
- Inventor: Seiichi Oishi , Minori Murata , Shoichi Tokura , Hiroshi Takahashi
- Applicant: SEIKO PRECISION INC.
- 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: JP2013-133164 20130625
- Main IPC: G03B9/40
- IPC: G03B9/40

Abstract:
A focal-plane shutter includes: a mechanical portion including: a board including an opening; and a leading blade and a trailing blade capable of opening and closing the opening; and a leading blade actuator and a trailing blade actuator respectively driving the leading blade and the trailing blade, and respectively including a leading blade coil and a trailing blade coil, wherein a current value flowing through at least one of the leading blade coil and the trailing blade coil is adjusted such that one of variations in a leading blade run-up period and a trailing blade run-up period depending on a temperature change corresponds to the other one.
Public/Granted literature
- US20160011491A1 FOCAL-PLANE SHUTTER, OPTICAL DEVICE, AND METHOD FOR ADJUSTING CURRENT FOR FOCAL-PLANE SHUTTER Public/Granted day:2016-01-14
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