| 摘要 |
PROBLEM TO BE SOLVED: To provide an actuator that can rotate a movable plate around each of an X axis and a Y axis orthogonal to the X axis, while reducing the cost and size, and to provide an optical scanner and an image forming apparatus. SOLUTION: The actuator 1 includes: a first oscillation system 21 having a driving member 211; a second oscillation system 22 having a movable plate 221; and a driving means 6 including a permanent magnet 61 provided on the driving member 211, a coil 62 and a voltage application means 63. The permanent magnet 61 is disposed in such a manner that the line connecting the both poles is oblique to each of the X axis and the Y axis. By applying a superposed voltage of a first alternating voltage and a second alternating voltage in different frequencies from each other to the coil 62 by the voltage application means 63, the movable plate 221 is rotated around the X axis at the frequency of the first voltage while rotated around the Y axis at the frequency of the second voltage. COPYRIGHT: (C)2008,JPO&INPIT
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