Patent ID: 7039268

Claim:
An optical device formed on a substrate, said optical device comprising: at least two fiber channels formed in the top surface of said substrate; a mirror that is pushed into and pulled out of an optical path between optical fibers disposed in said fiber channels; a movable rod carrying at one end said mirror; a comb-type electrostatic actuator disposed in association with the intermediate portion of said movable rod, for moving said movable rod lengthwise thereof; and plural support beams disposed near the one and the other end of said movable rod on both sides of the point of application of driving force by said comb-type electrostatic actuator, for movably supporting said movable rod; wherein said support beams support said movable rod at positions having line symmetry with respect to a center line parallel to the lengthwise direction of said movable rod, and the points of supporting said movable rod by said plural support beams are symmetrical with respect to said point of application of the driving force by said comb-type electrostatic actuator.