Patent ID: 8183721

Claim:
An oscillation drive device comprising: an oscillating unit that includes an oscillation axis and an attaching portion; a base including an oscillating fulcrum and a supporting portion, the oscillating fulcrum being in contact with the oscillating unit at the oscillation axis and arranged substantially in the center of the base, the supporting portion being formed on the periphery of the base; and a strip-shaped leaf spring holding the oscillating unit in such manner that the oscillating unit oscillates on the oscillating fulcrum, the strip-shaped leaf spring including a fixing portion attached to the attaching portion of the oscillating unit arranged within the oscillating fulcrum; a flexible beam portion, one end of which is attached to the supporting portion of the base; and torsional beam portions respectively arranged on two sides across the oscillating fulcrum in a direction perpendicular to the oscillation axis, each of the torsional beam portions being arranged substantially parallel to the oscillation axis, one end of each of the torsional beam portions being connected to the fixing portion while the other end is connected to the flexible beam portion.