We developed a high-speed, electrically tunable multi-bandpass filter using a polymer-stabilized blue-phase liquid crystal etalon and a narrowband multi-bandpass interference filter, for use in real-time multi-spectral imaging systems. We show theoretically that the filter exhibits high-level transmittance (≥ 80%) by using an Ag film as the reflective film used in the etalon. We confirmed that the filter allows for high-speed switching of the transmitted wavelength; the response time is about 1 ms. The filter enables high-transmittance, high-speed spectroscopy. Therefore, high-sensitivity real-time multi-spectral imaging at a frame rate of 60 fps or more can be expected in the future.
|ジャーナル||ITE Transactions on Media Technology and Applications|
|出版ステータス||Published - 2020|
ASJC Scopus subject areas
- Signal Processing
- Media Technology
- Computer Graphics and Computer-Aided Design