Benham's color disc による主観色の検討

概要

論文の詳細を見る
A number of investigations have been carried out on subjective color since the phenomenon was first described by Fechner in 1838. The so-called Benham's disc, invented in 1894, is still used as a device for producing subjective color. To solve fundamental mechanism of subjective color, observations ware done using various kinds of such disc. Otherwise, Festinger et al. (1971) recently experimented by means of on-off light of glow modulator. In the present experiment, modified Benham's discs are used, for which various colored patterns are prepared. Figure on the top of disc is constructed by white background and grey pattern with various grade of reflectance, or white background and red, green, or blue pattern (Fig. 3). Subjective color is observed when the disc is rotating. Relations between the subjective color and the reflectance or the color of disc pattern is investigated. As the result of this experiment, it is realized that the area of subjective color plotted on u-v coordinates reduces when the intensity of colored pattern decreases withaut chonge of the hue (Fig. 4). And that, in case of colored disc, subjective color is produced by differential reflectance between white background and colored pattern, which may cause certain stimulus for visual sensation. But hue of the colored pattern also has an effect on subjective color (Fig. 5, 6). The explanation of it requires further investigation.
日本色彩学会の論文
1973-12-30