"As shown in FIG. 1, the terminals 28, 30 for driving the piezoelectric/electrostrictive elements 18 a, 18 b and other members are arranged on the fixation section 14 in some cases. [0149] The material for constructing the movable section 20 a, 20 b and the fixation section 14 is not specifically limited provided that it has rigidity." . . . .