MULTI DEGREE OF FREEDOM PIEZOELECTRIC LINEAR ACTUATOR AND MANIPULATION METHOD THEREOF AND DEVICE FOR ADJUSTING THE FOCUS

摘要

PURPOSE: A multi degree of freedom piezoelectric linear actuator, a manipulation method thereof, and a device for adjusting focus are provided to obtain a plurality of degree of freedoms by freely linearly driving a plurality of movers. CONSTITUTION: A frame(110) supports one side of a piezoelectric actuator(120). A driving shaft(130) has a long bar of a circular cross-section. The mover unit is comprised of a first mover(141) and a second mover(142). A driver circuit(150) applies a driving voltage having a predetermined waveform to the piezoelectric actuator. A controller(160) controls the driver circuit.