Patent ID: 8649080

Claim:
A two-dimensional optical deflector comprising: a mirror; a support body surrounding said mirror; first and second piezoelectric actuators of a meander-type provided opposite to each other with respect to a first axis of said mirror; each of said first and second piezoelectric actuators comprising a plurality of piezoelectric cantilevers folded at every cantilever and connected from said support body to said mirror, each of said piezoelectric cantilevers being in parallel with said first axis, each of said piezoelectric cantilevers including first and second piezoelectric cantilever elements in parallel with each other combined by a substrate, said second piezoelectric cantilever elements being divided into a first group of piezoelectric cantilever elements and a second group of piezoelectric cantilever elements alternating with said first group of piezoelectric cantilever elements, said first piezoelectric cantilever elements of said first piezoelectric actuator and said first piezoelectric cantilever elements of said second piezoelectric actuator being configured to be driven by first and second drive voltages, respectively, opposite in phase with each other to rock said mirror with respect to said first axis, said first groups of piezoelectric cantilever elements and said second groups of piezoelectric cantilever elements being configured to be driven by third and fourth drive voltages, respectively, opposite in phase with each other to rock said mirror with respect to a second axis of said mirror perpendicular to said first axis.