Method of adjusting resonance frequency at oscillating mirror unit in an optical scanning apparatus

摘要

A groove (70) in which a curable resin (60) is filled, is formed on the opposite side face (41b) of a face for reflecting light of an oscillating mirror unit (41). The groove (70) extends so as to cross the swing axis (A) of the oscillating mirror unit (41), seen from the opposite side of the reflection face (41 a) of the oscillating mirror unit (41).