| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electromagnetic actuator capable of effectively improving the intensity of a magnetic field acting on a conductive coil.SOLUTION: The electromagnetic actuator includes: a movable unit 200 located in an opening region of a circuit board 210 and including a movable structure 220 driven using an extension direction of an elastic body coupled on the outside as a rotation axis and a conductive coil 240 for generating a driving force for the movable structure by an interaction, with a magnetic field, of a drive current flowing therein; and a magnetic field generation unit 300 located below the movable unit and generating the magnetic field, and including, in a plan view with respect to a reference line crossing the rotation axis at a sharp angle, first and second regions having mutually opposite magnetic poles configured on the top surface, a third region on the outside of the first region and having a magnetic pole opposite to the first region configured on the top surface, and a fourth region on the outside of the second region and having a magnetic pole opposite to the second region configured on the top surface.</p> |
