An optical device with an imaging device for forming an image of a subject with
a lens device includes a lens unit, a movable member making the lens unit movable
within a plane orthogonal to the optical axis of the lens unit, an image pickup
device imaging the subject image formed by the lens device, a fixed member limiting
the movement of the movable member in the optical axis direction, at least three
balls rolling between the movable and fixed member, a vibration detecting unit,
and pitch and yaw direction drive units for driving the movable member in the pitch
and yaw directions within the optical axis orthogonal plane, respectively. The
pitch and yaw direction drive units press the movable member toward the fixed member
side by means of magnetic pressing forces caused by magnetic attractive action
between drive magnets and yokes.