Patent ID: 8848302

Claim:
A lens barrel, comprising: a first lens unit including a first lens element and a first lens support frame supporting the first lens element; a second lens unit including a second lens element and a second lens support frame supporting the second lens element, and being supported by the first lens unit to be movable in an optical axis direction of the first lens element with respect to the first lens unit; and a drive unit arranged to be used to drive the second lens unit with respect to the first lens unit, and fixed to the first lens unit, the drive unit including a support plate fixed to the first lens unit to face the second lens element and an actuator with a drive shaft arranged to be rotatable around a first rotational axis, wherein, when viewed in the optical axis direction, the drive unit is fixed to the first lens unit so that a first profile line formed by the first lens unit and the drive unit is substantially circular, the support plate includes a flat support plate body extending substantially parallel to the first rotational axis, and an imaginary line perpendicular to the support plate body and intersecting the first rotational axis overlaps the second lens element when viewed in the optical axis direction.