The preceding reports simulated the distribution curves of a specular reflection light, i. e., goniophotometric curves by using a model of fabrics. The simulation was done, when parallel luminous flux was applied perpendicular to the filaments of fabrics, and the used model was assumed that fine elliptic column were arranged side by side on the surface of an elliptic column.
The goniophotometric curves were obtained by computer simulation by using a new model, in which a parallel luminous flux was applied paralled to the filaments of fabrics. The new model is assumed that the narrow elliptic columns with various length of minor axis are distributed. On the length of these minor axis, one is decided on the elliptical curve, and the other on the normal distribution. In this computer simulation, the axis of incident flux and photodetector are assumed to be parallel to the filaments of fabrics.
The method of the calculation is more applicable as well as those described in the previous paper.
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