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.
