Patent ID: 7247968

Claim:
A two-axis actuator comprising: a substrate; an inertial part with a substantially square shape and disposed at a predetermined elevation from the substrate; a stage with a substantially square shape connected to an upper part of the inertial part; a plurality of actuating frame parts disposed at peripheral regions corresponding to sides of the inertial part, each actuating frame part having a plurality of actuating frames disposed parallel to a corresponding side of the inertial part; a plurality of comb normal directional deformable spring parts, each comb normal directional deformable spring part having at least one spring member for perpendicularly connecting one side of the inertial part and the corresponding part of the actuating frame part; a plurality of fixed frame parts, each including a plurality of fixed frames alternately disposed in parallel to the actuating frames of a corresponding actuating frame part in each peripheral region; an actuating comb electrode disposed at each actuating frame extending in a direction perpendicular to the side of the inertial part in each corresponding peripheral region; a fixed comb electrode alternately disposed in parallel to the actuating comb electrode at each fixed frame of the fixed frame part; a plurality of comb directional deformable spring parts, each disposed on opposite sides of the actuating frame part to provide elastic recovery force in a direction perpendicular to the corresponding side of the inertial part in each peripheral region; a plurality of fixtures, disposed outward from sides of the stage by a predetermined distance, supporting the corresponding sides of the stage at a predetermined height from the substrate; and a plurality of two-axis deformable springs disposed between the stage and the fixtures to enable the stage to move in two axes.