イケダ ユウスケ   IKEDA Yusuke
  池田 雄介
   所属   東京電機大学大学院  未来科学研究科 情報メディア学専攻
   職種   助教(A)
言語種別 英語
発行・発表の年月 2017/02
形態種別 会議論文
査読 査読有り
標題 Interferometric imaging of acoustical phenomena using high-speed polarization camera and 4-step parallel phase-shifting technique
執筆形態 共著
掲載誌名 Proceedings of SPIE
掲載区分国外
著者・共著者 ◎Kenji Ishikawa, Kohei Yatabe, Yusuke Ikeda, Yasuhiro Oikawa, Takashi Onuma, Hayato Niwa, Minor Yoshii
概要 The optical measurement of sound utilizes the phase modulation of light caused by sound. Several methods including laser Doppler vibrometry and Schlieren method have been proposed for that purpose. However, the sensitivities of the methods become lower as a frequency of sound decreases. In contrast, since the sensitivities of the phase-shifting technique do not depend on the frequencies of sounds, that technique is suitable for the imaging of sounds in the low-frequency range. The principle of imaging of sound using parallel phase-shifting interferometry was reported by the authors (K. Ishikawa et al., Optics Express, 2016). The measurement system consists of a high-speed polarization camera made by Photron Ltd., and a polarization interferometer. This paper reviews the principle briefly and demonstrates the high-speed imaging of acoustical phenomena. The results suggest that the proposed system can be applied to various industrial problems in acoustical engineering.