Patent ID: 6198565
Filing Date: 2001-03-06
Classification: G02B,H04N

Abstract:
A light deflection element comprising:a first oscillating element having two arms and a pair of supports provided at a distance from one another, outer ends of the two arms being fixed to one of the pair of supports, and inner ends of the two arms being free ends;a second oscillating element having two arms, outer ends of which are fixed to the other of the pair of supports, and inner ends of which are free ends;a reflective mirror disposed between the two arms of each of the pair of oscillating elements;first torsion springs linking the inner ends of each of the arms of the first oscillating element to positions of the reflective mirror in proximity to and at a first position that is symmetrical about an axis that passes through the center of gravity of the reflective mirror;second torsion springs linking the inner ends of each of the arms of the second oscillating element to positions of the reflective mirror in proximity to and at a second position that is symmetrical about an axis that passes through the center of gravity of the reflective mirror; anda drive apparatus for applying drive to at least one of the pair of oscillating elements separately and independently, thereby causing the inner ends of the arms to move up and down separately and independently.