Patent ID: 9733449
Date: 2017-08-15
CPC Classifications: G02B

Claim:
1. A lens barrel in which a first movable member holding a first lens group and a second movable member holding a second lens group are arranged in a direction of an optical axis and made movable with respect to a fixing frame, said lens barrel comprising: a first actuator including a first coil, a first magnet opposed to the first coil, and a first yoke with a U-shaped cross section, wherein the first actuator is configured to move the first movable member in the direction of the optical axis by a first magnetic circuit formed by the first coil, the first magnet and the first yoke; a second actuator including a second coil, a second magnet opposed to the second coil, and a second yoke with a U-shaped cross section, wherein the second actuator is configured to move the second movable member in the direction of the optical axis by a second magnetic circuit that is formed by the second coil, the second magnet and the second yoke and that is magnetically independent of the first magnetic circuit; and an intermediate member located between the first movable member and the second movable member and including a diaphragm of an optical system, that includes the first lens group and the second lens group, and a collision preventing member that prevents the first movable member and the second movable member from colliding with each other, wherein an opening of the first yoke with the U-shaped cross section is opposed to an opening of the second yoke with the U-shaped cross section, the opening of the first yoke and the opening of the second yoke being provided away from each other by a predetermined distance and being opposed to each other along the direction of the optical axis.