| 摘要 |
Provided is a rocking member apparatus comprising torsion springs, a rocking member axially supported by the torsion spring, and a supporting substrate, the rocking member being rockable about the torsion spring, wherein a hard magnetic member is provided on one surface of the rocking member, a coil and a soft magnetic member, which are arranged so as to be spaced apart from the rocking member, the coil and the soft magnetic member are arranged at different positions in a direction vertical to the one surface, and the hard magnetic member is arranged at a position which is the same position as the soft magnetic member and the one surface in a direction vertical thereto, or a position which is on the side where the coil is arranged as seen from the soft magnetic member, whereby the apparatus can be made small and lightweight and allows increased deflection angle, high-speed scanning, and reduced power consumption.
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