Patent ID: 9097894
Filing Date: 2015-08-04
Classification: G02B

Abstract:
1. An optical deflector comprising: a mirror; a movable ring-shaped frame surrounding said mirror; a pair of torsion bars connected between said mirror and said movable ring-shaped frame, said torsion bars being oppositely arranged along a rocking axis of said mirror; a support body surrounding said movable ring-shaped frame; first, second, third and fourth coupling bars connected between said support body and said movable ring-shaped frame, said first and third coupling bars being oppositely arranged along a first direction which is offset by a first predetermined angle between +30° and +60° with respect to said rocking axis, said second and fourth coupling bars being oppositely arranged along a second direction which is offset by a second predetermined angle between −30° and −60° with respect to said rocking axis; and piezoelectric actuators, formed on said movable ring-shaped frame, for rocking said mirror through said torsion bars along said rocking axis.