Invention Grant
US08167507B2 Focal plane shutter device and imaging device 有权
焦平面快门装置和成像装置

Focal plane shutter device and imaging device
Abstract:
A focal plane shutter device is disclosed that includes a shutter base plate, a front curtain, a first urging member, a rear curtain, a second urging member, and a charge mechanism. The shutter base plate defines an opening. The front curtain is moved between different positions by the first urging member to cover and uncover the opening. The rear curtain is moved between different positions by the second urging member to cover and uncover the opening. The charge mechanism applies a first force to resist an urging force by the first urging member and a second force to resist an urging force by the second urging member. The first force applied by the charge mechanism terminates at a different time than the second force applied by the charge mechanism.
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