草木染の光学的性質

概要

論文の詳細を見る
An optical research for natural dyes was done. The following became clear after the investigation on them. The spectral reflectance curve of natural dye is gentler than that of synthetic dye or pigment. Especially, the value of the spectral reflectance for the yellow-brownish dye of plant, changes almost linearly against wavelength, and increases toward long wavelength. This optical property of yellow-brownish dye cannot be found in other coloring matters, but has something in common with the optical property of achromatic pigment. Because an usual achromatic pigment, such as zinc white or carbon black, shows hardly any variation in spectral reflectance. The natural dye has a good constancy of apparent color for the change of illumination. When the daylight source is replaced with a different white light source, the change in apparent color given by natural dye is less than that to synthetic dye or pigment. And the direction of color change yielded from natural dye except for bluish one is almost constant. On tlae contrary, the change corresponding to the bluish color which is given by indigo plant takes approximately opposite direction. These facts suggest that the color differences among colors given by natural dye tend to hold nearly the constant color relations without any influence of illumination. But the color difference between bluish color and others will be varied by the change of illumination. Therefore, natural dyes applied to fabrics are available for expecting the unchangeable appearance of color in the state of color adaptation under any white light source. All mentioned above owe to the shape of spectral reflectance curve for natural dye. Thinking for the optical property of natural dye may be useful for settling the problem of metamerism and the improvement for the spectral reflectance curve of synthetic dye which yields low saturated color.
日本色彩学会の論文
1973-12-30

草木染の光学的性質

スポンサーリンク

概要

著者

関連論文

スポンサーリンク