Hirofumi Yamashita, K. Terao, H. Takao, F. Shimokawa, F. Oohira, Takaaki Suzuki
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引用次数: 2
Abstract
Repeatability of driving characteristics of a polymer-MEMS mirror are transitioned by an environment and time course change. In this study, we propose a method of motion sensing for the purpose of laser scan stable by the active control of a polymer-MEMS mirror. A proposed motion sensor is a coil-type sensor that induces the electric current by an electromagnetic induction and monolithically integrated on the mirror driving by the electromagnetic force. The fabricated mirror made of SU-8 polymer deflects over ±30deg. at low electric current. The measured current induced by the integrated sensor coil is clearly obtained by applying the lock-in detection for signal processing method, and it indicates that the feasibility of amplitude control of the polymer MEMS mirror.