Lenticular transmission and reflection projection screens are considered with a view to explaining some experimental effects that cannot be accounted for by geometrical optics. When illuminated with white light, the screens display color bands and, at the edges of the patterns, white and dark lines appear. These phenomena can be explained by diffraction theory and analysis by the method of stationary phase.
E. W. Marchand, "Diffraction effects with lenticular projection screens," J. Opt. Soc. Am. 65, 139-145 (1975)