抄録
Author have previously reported that the distribution of a specular reflected light, i.e., goniophotometric curve, on fabrics can be simulated by assuming the warp yarn to be a simple elliptic column. Experimental results agreed well with these calculated curves. It is desirable, however, to use a model more closer to the real fabrics, since the surface of fabrics is very complicated.
Simulated goniophotometric curves were obtained in a computer simulation using a new thread model, in which a parallel light flux was assumed to be projected to the fabrics. The new thread model consists of many fine elliptic cylinders arranged side by side covering the entire surface of a large elliptic column. In this computer simulation, the axis of incident light flux and photodetector was assumed to lie on a plane perpendicular to the warp ends of fabrics.
This new simulation method can find wider use than that of the previous paper.
