Patent ID: 8411343

Claim:
An optical scanning device, comprising: a substrate; torsion bar portion which is connected to the substrate; a mirror portion which is supported by the torsion bar portion; a drive source which causes the mirror portion to oscillate; and a light-source which projects light onto the mirror portion, wherein the mirror portion resonates and vibrates in accordance with a vibration imparted to the substrate by the drive source, and the direction of reflection light from the light projected onto the mirror portion from the light source changes in accordance with the vibration of the mirror portion, wherein the mirror portion is set in a desired position by pivoting the mirror portion from an initial set position of the mirror portion around the supporting axis of the torsion bar portion, and imparting plastic deformation to the torsion bar portion, and wherein a substrate fixing frame is positioned so as to surround a substrate main body and cantilever beam portions and is fixed to a fixing end portion side of the substrate main body, and the substrate main body and the substrate fixing frame are connected together by substrate connecting bars at a position separated from a supporting component, and the substrate main body and the substrate fixing frame are also connected together by substrate connecting bars in the vicinity of the minimum amplitude of the substrate vibration.