A Study on Optical Piezo-Electric Actuator (Response Experiments by U.V. Beam and Photo Response Model)
Shinobu Hattori*, Toshio Fukuda** and Shigenobu Nagamori*
*Central R&D Laboratories, Nippon Densan Corporation, Tsutsumisotomachi, Nishikyogoku, Ukyo-ku, Kyoto 615, Japan
**Faculty of Engineering, Nagoya University, 1 Furo-cho, Chikusa-ku, Nagoya 464-01, Japan
In this paper, we propose a photo response model of the optical piezo-electro actuator, which reacts by light beam. Based on response experiments by U.V. beam, the response in this model is constituted with three effects: 1) photostrictive effect; 2) pyroelectro effect; 3) thermal deformation. Those effects are different in response magnitude and response time each other; influenced by the characteristics of the light beam. In consequence, it is possible that a photo response is controlled by changing characteristics of light beam. As a whole, results of the simulations of this model agree with those of the experiments.