High Speed and Narrow-Bandpass Liquid Crystal Filter for Real-Time Multi Spectral Imaging Systems

Kohei TERASHIMA; Kazuhiro WAKO; Yasuyuki FUJIHARA; Yusuke AOYAGI; Maasa MURATA; Yosei SHIBATA; Shigetoshi SUGAWA; Takahiro ISHINABE; Rihito KURODA; Hideo FUJIKAKE

doi:10.1587/transele.E101.C.897

Special Section on Electronic Displays

High Speed and Narrow-Bandpass Liquid Crystal Filter for Real-Time Multi Spectral Imaging Systems

Kohei TERASHIMA, Kazuhiro WAKO, Yasuyuki FUJIHARA, Yusuke AOYAGI, Maasa MURATA, Yosei SHIBATA, Shigetoshi SUGAWA, Takahiro ISHINABE, Rihito KURODA, Hideo FUJIKAKE

Author information

Kohei TERASHIMA
Graduate School of Engineering, Tohoku University
Kazuhiro WAKO
National Institute of Technology, Sendai College
Yasuyuki FUJIHARA
Graduate School of Engineering, Tohoku University
Yusuke AOYAGI
Graduate School of Engineering, Tohoku University
Maasa MURATA
Graduate School of Engineering, Tohoku University
Yosei SHIBATA
Graduate School of Engineering, Tohoku University
Shigetoshi SUGAWA
Graduate School of Engineering, Tohoku University
Takahiro ISHINABE
Graduate School of Engineering, Tohoku University
Rihito KURODA
Graduate School of Engineering, Tohoku University
Hideo FUJIKAKE
Graduate School of Engineering, Tohoku University

Keywords: spectral imaging, liquid crystal filter, narrow bandpass, fast switching, overdrive

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2018 Volume E101.C Issue 11 Pages 897-900

DOI https://doi.org/10.1587/transele.E101.C.897

Details

Abstract

We have developed the high speed bandpass liquid crystal filter with narrow full width at half maximum (FWHM) of 5nm for real-time multi spectral imaging systems. We have successfully achieved short wavelength-switching time of 30ms by the optimization of phase retardation of thin liquid crystal cells.

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