US 12,105,409 B2
Shutter unit and image pickup apparatus
Kei Sato, Tokyo (JP); Yuki Niwamae, Kanagawa (JP); and Kazuya Karibe, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 12, 2022, as Appl. No. 17/862,490.
Claims priority of application No. 2021-117551 (JP), filed on Jul. 16, 2021.
Prior Publication US 2023/0024529 A1, Jan. 26, 2023
Int. Cl. G03B 9/20 (2021.01)
CPC G03B 9/20 (2013.01) 6 Claims
OG exemplary drawing
 
1. A shutter unit comprising:
a base plate on which an opening is formed;
at least one blade member;
a driving member configured to be rotatably supported by the base plate and to drive, in imaging, the blade member from a standby position to a traveling completion position by using a biasing force of a biasing member;
a braking member configured to cause the driving member to decelerate by coming into contact with the driving member; and
a charging member configured to:
cause the driving member to operate to the standby position after causing the driving member to operate from the traveling completion position to a set position against the biasing force of the biasing member; and
cause the braking member to operate from the traveling completion position to the standby position while causing the driving member to operate from the set position to the standby position.