Patent ID: 8018118

Claim:
A micro-oscillation element, comprising: a base frame; an oscillating portion including a movable functional portion, a first driving electrode connected to the movable functional portion, and a weight portion joined to an end of the first driving electrode on an opposite side of the movable functional portion; a link portion connecting the base frame and the oscillating portion to each other and defining an axis of an oscillating motion of the oscillating portion; and a second driving electrode that generates driving force for the oscillating motion in cooperation with the first driving electrode, the second driving electrode being fixed to the base frame; wherein the weight portion is wider than the end of the first driving electrode, as viewed in a direction in which the axis of the oscillating motion extends, wherein the weight portion is electrically connected to the first driving electrode, wherein electrostatic force is generated between the weight portion and the second driving electrode, and wherein a spacing between the weight portion and the second driving electrode gradually increases as proceeding away from the first driving electrode.