Patent ID: 8520329
Filing Date: 2013-08-27
Classification: G02B,H01L,H02N

Abstract:
1. An piezoelectric actuator comprising: a first actuator including a first piezoelectric element to be displaced in a first direction; a second actuator, which includes a second piezoelectric element to be displaced in a second direction intersecting with the first direction, and is arranged in a direction intersecting with the first direction with respect to the first actuator; and a relative motion member, which is arranged between the first actuator and the second actuator and can be relatively moved in the first direction with respect to the first actuator; and wherein the relative motion member is in contact with a friction member provided in the first actuator and with a slide member provided in the second actuator, the second actuator can be switched to a pressurized state where the first actuator is pressed against the relative motion member by displacement of the second piezoelectric element, and a non-pressurized state where the pressurization is removed, and the relative motion member is relatively moved in the first direction by displacement of the first piezoelectric element during the pressurized state.