Patent ID: 8164811
Filing Date: 2012-04-24
Classification: G02B,H02K,H04N

Abstract:
1. An optical scanning actuator that performs scanning with light emitted from an optical element, the optical scanning actuator comprising: a fixing member; a movable unit that supports the optical element and is movable together with the optical element; a plurality of leaf springs which have a thin plate shape and of which one end portion in a longitudinal direction is fixed to the fixing member and another end portion in the longitudinal direction is attached to the movable unit; and an electromagnetic driving unit that includes a magnet that generates a magnetic flux, a yoke that is laminated in part on the magnet and forms a closed magnetic circuit together with the magnet, and a coil that is held by the movable unit, is positioned in a gap between the magnet and the yoke, includes an opening plane being substantially orthogonal to a laminating direction of the magnet and the yoke, and drives the movable unit by an electromagnetic force applied to the coil, wherein the yoke does not pass through the opening plane.