Abstract: A correction optical device comprises an OIS frame, and an OIS lock ring that restricts a movement of the OIS frame. The OIS lock ring rotates so that a position of a first protrusion reciprocates between a lock position and an unlock position. The first protrusion and the second protrusion are formed into such shapes that generate a component force acting on the first protrusion in a direction from the unlock position toward the lock position when a force causing the first protrusion and the second protrusion to push against each other is generated between the first protrusion and the second protrusion.

Abstract: A correction optical device comprises an OIS frame, and an OIS lock ring that restricts a movement of the OIS frame. The OIS lock ring rotates so that a position of a first protrusion reciprocates between a lock position and an unlock position. The first protrusion and the second protrusion are formed into such shapes that generate a component force acting on the first protrusion in a direction from the unlock position toward the lock position when a force causing the first protrusion and the second protrusion to push against each other is generated between the first protrusion and the second protrusion.

Abstract: An object is to realize further size reduction in a lens barrel in which a barrel unit is rotatable in three axis directions. The lens barrel includes a support portion for supporting the barrel unit, a part of the support portion being fixed to an external member, an actuator including a drive base movable in a direction parallel to a surface passing through an optical axis of the barrel unit, and a universal joint mechanism portion for linking the barrel unit and the drive base of the actuator. The support portion supports the barrel unit rotatably about a pitch axis, a roll axis, and a yaw axis with respect to the optical axis direction, and the actuator drives the barrel unit about the pitch axis, the roll axis, and the yaw axis by moving the drive base.

Abstract: An object is to realize further size reduction in a lens barrel in which a barrel unit is rotatable in three axis directions. The lens barrel includes a support portion for supporting the barrel unit, a part of the support portion being fixed to an external member, an actuator including a drive base movable in a direction parallel to a surface passing through an optical axis of the barrel unit, and a universal joint mechanism portion for linking the barrel unit and the drive base of the actuator. The support portion supports the barrel unit rotatably about a pitch axis, a roll axis, and a yaw axis with respect to the optical axis direction, and the actuator drives the barrel unit about the pitch axis, the roll axis, and the yaw axis by moving the drive base.