Effects of fabric parameters on specular reflection of single-jersey knitted fabrics

This paper is concerned with the prediction of goniophotometric curves (dis tribution curves of specularly reflected light) based on our mathematical m odel developed earlier for single-jersey knitted fabrics made from monofila ment yarns. The theory is extended to include fabrics from multifilament ya rns. Four physical and optical parameters related to the fabric and the lig ht source are investigated: fiber refractive index, yarn cross section, inc ident light angle, and fiber ellipticity. Their effects on the goniophotome tric curves and luster index of knitted fabrics are determined. In addition , the great difference is highlighted between light reflected from knitted fabrics and light received by the goniophotometer.