Patent ID: 7133185

Claim:
A micro electromechanical optical switch, comprising: a substrate; a base plate, having an end pivoted to said substrate, and another end being free; a first stress-induced curved beam, having an end anchored on said substrate, and another end extending from said anchored end to a position between said base plate and said substrate; a mirror, having a side pivoted to said base plate; and a second stress-induced curved beam, having an end anchored on said base plate, and another end extending to a position under said mirror; wherein residual stress in said first curved beam bends itself to lift up said end extending to said position between said base plate and said substrate, and rotate said free end of said base plate away from said substrate by said pivoted end; residual stress in said second curved beam bends itself to lift up said end extending to said position under said mirror, and rotate said mirror away from said substrate by said pivoted side.