Patent ID: 7667373

Claim:
A drive unit comprising: a drive target; a first actuator which is arranged in contact with the drive target, and drives the drive target in a first drive direction parallel to a contact surface of the drive target by generating a vibration in a direction parallel to the contact surface of the drive target and a vibration in a direction intersecting with the contact surface of the drive target; and a second actuator which is arranged in contact with the drive target, and drives the drive target in a second drive direction which is different from the first drive direction and parallel to the contact surface of the drive target by generating a vibration in a direction parallel to the contact surface of the drive target and a vibration in a direction intersecting with the contact surface of the drive target, wherein in driving the drive target in only one of the first and second drive directions, one of the first and second actuators corresponding to the one of the drive directions generates a composite vibration of a vibration in a direction parallel to the contact surface of the drive target and a vibration in a direction intersecting with the contact surface of the drive target, while the other actuator of the first and second actuators generates only a vibration in a direction parallel to the contact surface of the drive target.