LIGHT DEFLECTOR, AND DEVICES INCORPORATING THE SAME

摘要

A light deflector includes a mirror unit having a light reflection plane, a base, a pair of elastic supporting members each having one end attached to the mirror unit and the other end attached to the base and configured to support the mirror unit in a rotatable and oscillatable manner, and a pair of drive bars each having one end attached to another end of a corresponding one of the elastic supporting members and the other end attached to the base in a cantilevered state. The mirror unit rotates and oscillates about a center of rotation as deformation of the drive bars is transmitted to the mirror unit through the elastic supporting members. The center of rotation of the mirror unit is within a range of −0.05×D to −0.01×D, where D denotes a diameter of the mirror unit.

主权项

1. A light deflector comprising:
a mirror unit having a light reflection plane; a base; a pair of elastic supporting members each having one end attached to the mirror unit and the other end attached to the base and configured to support the mirror unit in a rotatable and oscillatable manner; and a pair of drive bars each having one end attached to another end of a corresponding one of the elastic supporting members and the other end attached to the base in a cantilevered state, the pair of drive bars being deformable in response to an external force, wherein the mirror unit rotates and oscillates about a center of rotation as deformation of the drive bars is transmitted to the mirror unit through the elastic supporting members, and the center of rotation of the mirror unit is within a range of −0.05×D to −0.01×D, where D denotes a diameter of the mirror unit and the minus denotes a direction opposite to a a direction from fixed ends to free ends of the drive bars with reference to a center of the mirror unit.