A microactuator comprises a motor element including a stator and a rotor
capacitively coupled to the stator; an actuator element having a circular
structure; and a transmission structure interposed between the motor
element and the actuator element to transmit a rotary movement of the
motor element into a corresponding rotary movement of the actuator
element. In particular, the transmission structure comprises a pair of
transmission arms identical to each other, arranged symmetrically with
respect to a symmetry axis of the microactuator. The transmission arms
extend between two approximately diametrically opposed regions of the
rotor to diametrically opposed regions of the actuator element.
