Patent ID: 7884990

Claim:
An actuator, comprising: a weight part; a supporting part supporting the weight part; a connecting part coupling the weight part rotatable to the supporting part and having an elastic part; a driving member for driving and rotating the weight part, wherein the driving member includes a coil provided on the weight part and a voltage supply applying a voltage to the coil, the weight part is rotated by applying the voltage to the coil through the voltage supply; an amplifier circuit for driving the weight part; and a behavior detector detecting the behavior of the weight part based on a signal received from the amplifier circuit, wherein the driving member is operated to torsionally deform the elastic part and rotate the weight part, the elastic part includes a resin layer and the torsional spring constant of the elastic part is adjusted by the thickness of the resin layer, the supporting part includes at least a silicon part made mainly of silicon, the amplifier circuit being disposed on the silicon part.