像の鮮明度を利用せる光沢計 II
1957 年 26 巻 9 号 p. 452-454
詳細
1957 年 26 巻 9 号 p. 452-454
A new distinctness-of-image gloss meter has been constructed with which the distinctnessof-imge gloss of samples is determined by measuring the ratio r of the intensity of specularly reflected light to that of diffusely reflected in the direction deviated by a small angle s from the former. The relation between r and s is first explored in the range from 36' to 72' of s for the incident angle α of 60° (Fig. 3), and then the relation between r and α in the range from 40° to 80° of α for s=45' (Fig. 4).
