Five degrees of freedom MEMS actuator for autofocus, optical image stabilization, and super resolution imaging in miniature cameras
Abstract:
A MEMS electrostatic actuator that provides 5 degrees of freedom (5-DOF) motion is disclosed. The actuator comprises of an inner, a middle, and an outer MEMS structures that are nested with respect to each other. Each of the structures comprise of a plurality of rotors and stators. The rotors further comprise a plurality of moving capacitive electrodes which engage with a plurality of fixed capacitive electrodes in the stators to provide a variety of translational and rotational motions.
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