Patent ID: 6847151

Claim:
A rotary electrostatic microactuator comprising a substrate extending substantially in a plane, at least one comb drive assembly carried by the substrate and having a first comb drive member mounted on the substrate and a second comb drive member, first and second spaced-apart springs, each of the first and second springs having a first end portion coupled to the substrate and a second end portion coupled to the second comb drive member for suspending the second comb drive member over the substrate, the second comb drive member being part of a movable structure that is rotatable about an axis of rotation from a first position to a second position relative to the first comb drive member, the movable structure and the first and second springs extending radially outwardly from the axis of rotation and having a shape of a truncated sector of a circle when viewed in plan, the axis of rotation intersecting the plane of the substrate at a location spaced radially inwardly from and free of the movable structure and the first and second springs.