Patent ID: 7773282
Filing Date: 2010-08-10
Classification: B81B,G02B

Abstract:
1. An optical deflector comprising: a minor having a reflective plane; a torsion bar extending outwardly from a side of said mirror; a support surrounding said minor; a piezoelectric cantilever including a supporting body and a piezoelectric body formed on the supporting body, one end of said piezoelectric cantilever being connected to said torsion bar, the other end of the piezoelectric cantilever being connected to said support, said piezoelectric cantilever, upon application of a driving voltage to the piezoelectric body, exhibiting a bending deformation due to piezoelectricity so as to rotate said torsion bar, thereby rotarily driving said minor through said torsion bar; and an impact attenuator connected to said support, the impact attenuator being disposed in a gap between said mirror and said support.