US 11,703,741 B2
Shutter device and imaging apparatus
Ryusei Fukuoka, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jun. 28, 2022, as Appl. No. 17/851,625.
Claims priority of application No. 2021-108060 (JP), filed on Jun. 29, 2021; and application No. 2021-108061 (JP), filed on Jun. 29, 2021.
Prior Publication US 2022/0413358 A1, Dec. 29, 2022
Int. Cl. G03B 7/26 (2021.01); G03B 9/36 (2021.01)
CPC G03B 7/26 (2013.01) [G03B 9/36 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A shutter device comprising:
a base plate including an opening;
a blade unit configured to switch a state of the opening between a closed state and an opened state;
a driving member attached to the blade unit and configured to drive the blade unit;
a motor;
a decelerator configured to decelerate power from the motor;
a first connector engaged with the decelerator;
a second connector having one end attached to the driving member and another end attached to the first connector;
a first position detector configured to detect passage through a predetermined position in a moving locus of the driving member or the first connector; and
a second position detector configured to detect a relative difference from the first position detector,
wherein the blade unit switches the state of the opening from the closed state to the opened state by continuous rotation of the first connector in a first direction, and
wherein driving of the motor is controlled based on results of the detection by the first position detector and the second position detector.