Patent ID: 8011838
Filing Date: 2011-09-06
Classification: G03B

Abstract:
1. A focal-plane shutter comprising: a leading blade driving member configured to be rotatably fitted onto a first shaft provided on a shutter base plate and to be driven by a biasing force of a leading blade driving spring; a trailing blade driving member configured to be rotatably fitted onto a second shaft provided on the shutter base plate and to be driven by a biasing force of a trailing blade driving spring; a leading blade adjusting member configured to be rotatably fitted onto the first shaft and to adjust the biasing force of the leading blade driving spring; a trailing blade adjusting member configured to be rotatably fitted onto the second shaft and to adjust the biasing force of the trailing blade driving spring; and a tilt adjusting member for adjusting a tilt of the trailing blade adjusting member caused by the trailing blade driving spring to be greater than that of the leading blade adjusting member caused by the leading blade driving spring.