We present the SPICA Coronagraphic Instrument (SCI), which has been designed for a concentrated study of extra-solar planets (exoplanets). SPICA mission provides us with a unique opportunity to make high contrast observations because of its large ...
Makoto Mita   Satoshi Maruyam   Yuheon Yi   Kazuhiro Takahashi   Hiroyuki Fujita   Hiroshi Toshiyoshi   
IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING 6(2) 180-189 2011年3月 [査読有り]
We report a newly developed equivalent electrical circuit for microelectromechanical systems (MEMS) based on a circuit simulator Qucs (Quite Universal Circuit Simulator). An analog computing solver for the equation of motion (EOM) has been interpr...
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS 20(1) 270-278 2011年2月
This paper proposes a novel structure of microelectromechanical-systems-based 1-D spatial light phase modulator (SLPM) that consists of a micromirror array on a silicon-on-insulator (SOI) wafer and indium tin oxide (ITO) electrodes on a glass plat...
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS 20(1) 279-287 2011年2月
In part I of this paper, we have proposed a novel structure of microelectromechanical-systems-based 1-D spatial light phase modulator (SLPM). We have discussed the design of the device and derived the optimum parameters to satisfy the target speci...
T. Takahashi   M. Mita   K. Motohara   N. Kobayashi   H. Fujita   H. Toshiyoshi   N. Kashikawa   
OMN2011: 16TH INTERNATIONAL CONFERENCE ON OPTICAL MEMS AND NANOPHOTONICS 79-+ 2011年 [査読有り]
We report a new structure of electrostatically addressable and latchable multi-slit shutter array for the astronomical spectrograph with an improved optical and electromechanical performance using the electroplated visors.