Patent ID: 7312541
Filing Date: 2007-12-25
Classification: H01L,H02K

Abstract:
1. An actuator comprising: a rotating body which can rotate and advance linearly along a specified linear-advance axis, a movable element side magnetism generating element which is disposed on the rotating body, a supporting carrier which supports the rotating body so that the rotating body is free to rotate, said supporting carrier being movable along the linear-advance axis together with the rotating body, a fixed element side magnetism generating element which is disposed along a direction of the linear-advance axis on an outside of the supporting carrier, and a magnetic path member which is disposed on the supporting carrier and has a plurality of magnetic paths that are formed between a circumferential magnetic field that is created by the movable element side magnetism generating element and a rectilinear magnetic field of the fixed element side magnetism generating element; and wherein said rotating body is caused to make a movement combining a linear advance and rotation by a cooperative action of a magnetic field created by said movable element side magnetism generating element and magnetic field created by said fixed element side magnetism generating element.