Characteristics of Optical Actuator-Servomechanisms Using Bimorph Optical Piezo-Electric Actuator. - Toshio Fukuda; Shinobu Hattori; Fumihito Arai; Hideo Matsuura; Tsutomu Hiramatsu; Yoichi Ikeda; Akinari Maekawa (ICRA (2), 1993)