Patent ID: 7388702

Claim:
A micro-oscillating member, comprising: a support portion; a movable system comprising a first movable element, a first torsion spring which connects the first movable element to the support portion such that the first movable element is oscillatable around an oscillating axis, a second movable element, and a second torsion spring which connects the second movable element to the first movable element such that the second movable element is oscillatable around the oscillating axis; a driving portion for oscillating the first and second movable elements around the oscillating axis; and a driving control portion for controlling the driving portion, wherein the movable system has a reference oscillation mode which is a characteristic oscillation mode of a reference frequency, and an even numbered oscillation mode which is a characteristic oscillation mode of a frequency being 1.98n times or more to 2.02n times or less the reference frequency when n is an integer of 1 or more, and wherein the driving control portion controls the driving portion such that the movable system simultaneously oscillates in the reference oscillation mode and the even numbered oscillation mode.