熱光起電力発電用選択透過フィルターの分光半球透過率計測

抄録

In this study, we tried to measure spectral hemispherical transmittance of piling quartz glass plates with double-layer anti-reflection coatings in order to verify the spectral control performance for diffuse irradiation. In the wavelength longer than 2.1μm, the measured spectral transmittance was consistent with numerical simulation result based on one-dimensional model. Meanwhile, the experimental value was less than the numerical one especially in the wavelength range from 1.5 to 2μm. In order to reduce this difference, numerical simulation included multiple reflections at the surface of mirror within wave guide was effective.