Patent ID: 7602439

Claim:
A lens unit comprising: a lens barrel in which an imaging optical system is disposed; a movable section including a movable lens and configured to be moved in an optical axis direction relative to the lens barrel; a linear actuator including a drive magnet and a drive coil and configured to move the movable section in the optical axis direction by supplying a current to the drive coil; and a first and second biasing blade springs including holding portions for holding the movable section, a plurality of spring portions capable of being elastically deformed and biasing the movable section in the optical axis direction, and attachment portions to be attached to the lens barrel; wherein the second biasing blade springs is formed with two spring members; wherein a thickness of the second biasing blade spring is thinner than a thickness of the first biasing blade spring such that the spring force of the first biasing blade spring is larger than a spring force of the second biasing blade spring; and wherein the current is supplied to the drive coil via the two spring members.