Patent ID: 7733551

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; a semiconductor circuit for driving the weight part an amplifier circuit; and a stress detection element for 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 first silicon part that is mainly made of silicon and a first resin part that is mainly made of resin and coupled to the first silicon part, the supporting part includes at least a second silicon part made mainly of silicon and a second resin part that is mainly made of resin and coupled to the second silicon part with the amplifier and semiconductor circuit being disposed therebetween, the second silicon part being coupled to the first silicon part of the elastic part, and the stress detection element being disposed on an upper surface of the first resin part of the connecting part.