Patent ID: 8456727

Claim:
An optical device comprising: an optical deflector including a movable frame and a movable mirror for controllably deflecting a light beam, the optical deflector further including at least one piezoelectric actuator that rotates a torsion bar connected to said mirror to controllably rotate, relative to the movable frame, the movable mirror around a first axis that is in parallel with a resting plane of the mirror, the optical deflector further including a support and at least another piezoelectric actuator to rotate, relative to the support, said movable frame around a second axis that is substantially perpendicular to the first axis and that is substantially in parallel with the resting plane of said mirror, said another piezoelectric actuator also being configured to move said movable frame relative to the support in lateral directions substantially in parallel to the resting plane; and an actuator unit for said optical deflector including a base on which said optical deflector is mounted, a supporting body, and at least one piezoelectric actuator, one end of the at least one piezoelectric actuator being connected to said base that mounts said optical deflector thereon, another end of said piezoelectric actuator being connected to said supporting body, said piezoelectric actuator being configured to be controllably activated to generate a translational movement of said base relative to the supporting body.