| 摘要 |
<p>A voice coil type actuator comprising a guide shaft (14) formed of a material having at least a portion which is permeable in the radial direction in cross-section, a movable member (13) slidably supported on the guide shaft (14), a movable coil (27) supported on the guide shaft (14) on the movable member (13), a generally tubular yoke (17) surrounding the movable coil (27) and covering the range of the movement thereof, and a magnetic field generating magnet (20) being in contact with the yoke (17). An axially extending cutout (18a) is formed in the yoke (17). A portion of the movable member (13) projects through the cutout (18a) and supports thereon a displaceable member. <IMAGE></p> |
