Patent ID: 8675295

Claim:
A piezoelectric actuator comprising: a first piezoelectric element; a second piezoelectric element; a first set of a first member that is mounted with the first piezoelectric element which is deformed in a first direction with an application of a first voltage; and a second set of a second member that is mounted with the second piezoelectric element which is deformed in the opposite direction of the first direction with the application of the first voltage, wherein the first direction comprises a second direction, wherein the first piezoelectric element comprises a pair of third piezoelectric elements, wherein the second piezoelectric element comprises a pair of fourth piezoelectric elements, wherein the first member comprises a first base portion, wherein the second member comprises a second base portion, wherein the pair of third piezoelectric elements interposes the first base portion therebetween and drives the first base portion in the second direction, wherein the pair of fourth piezoelectric elements interposes the second base portion therebetween and drives the second base portion in the direction opposite to the second direction, wherein the first direction comprises a third direction, wherein the first piezoelectric element comprises a fifth piezoelectric element, wherein the second piezoelectric element comprises a sixth piezoelectric element wherein the first member comprises a first tip portion, wherein the second member comprises a second tip portion, wherein the fifth piezoelectric element is disposed between the first tip portion and the first base portion and drives the first tip portion in the third direction, and wherein the sixth piezoelectric element is disposed between the second tip portion and the second base portion and drives the second tip portion in the direction opposite to the third direction.