淡色系,濃色系真珠に現れる光の干渉現象とその測定

抄録

The essential beauty of pearls comes from "teri", a Japanese term to express a combined effect of luster and interference colour seen in pearls. "Teri" is not a simple equivalent to luster. "Teri" appears due to light interference from the textures of pearls. "Teri" exhibited by pale colour pearls, like Akoya pearl, appears phenomenologically opposite to that exhibited by dark colour pearls, like kurocho. How "teri" appears is theoretically analyzed for the two series, pale and dark colour pearls. Based on these analyses, optical methods combined with computer evaluation are newly designed to quantitatively evaluate "teri" of pearls in the two series.