Model examination of the reflex-halation in single-layer light-sensitive system

The results of computer simulation of the effects of light scattering in a system composed of single silver halide light-sensitive layer coated on a t ransparent base are presented. The scattered light penetrating the base fil m can suffer from internal reflection from its lower surface and thus contr ibutes to some loss of image sharpness. This effect, called reflex-halation , is very disadvantageous. The qualitative dependence of the MTF curve of t he system on its geometric and optical parameters is examined. It has been shown, among others, that the deterioration of image quality is the stronge r the thinner the light-sensitive layer is and the more elongated the eleme ntary scatteing indicatrix of silver halide crystals is. The result is simi lar to that obtained in the case of crossover effect, though in the presenc e of the antihalation layer the observed dependences are opposite to those just mentioned.