Patent ID: 11877067
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A shutter apparatus comprising:
a front blade unit and a rear blade unit configured to open and close an opening for exposure control;
a front drive member and a rear drive member configured to drive the front blade unit and the rear blade unit between an open position and a closed position of the opening, respectively;
a front driving source and a rear driving source configured to rotate the front drive member and the rear drive member, respectively; and
a controller configured to control the front driving source and the rear driving source,
wherein the controller switches between a first mode for energizing the front driving source and the rear driving source with a first time difference, and a second mode for energizing the front driving source and the rear driving source with a second time difference longer than the first time difference based on an imaging condition.