Patent ID: 8345340

Claim:
A method of adjusting a resonance frequency in an optical scanning device, comprising the steps of: providing the optical scanning device comprising: a substrate comprising: a substrate main body; and two cantilever beam portions protruding from one side of the respective side portion of the substrate main body; a drive source positioned in a portion of the substrate main body, for vibrating the substrate; a mirror portion which is positioned between the two cantilever beam portions, supported at both sides by mirror support beam portions, and vibrated by resonance vibration at a resonance frequency by the vibration of the substrate; a light source for emitting light to the mirror portion, to change a direction of reflection light by the resonance vibration; and a supporting component for fixing the substrate main body at a fixed end on an opposite side of the two cantilever beam portions; and reducing an area of the substrate which protrudes from the fixed end, at which the substrate main body is attached to the supporting component, to an outside of the supporting component, thereby to increase the resonance frequency; or alternatively, increasing the area of the substrate which protrudes from the fixed end, at which the substrate main body is attached to the supporting component, to the outside of the supporting component, thereby to reduce the resonance frequency.