A transmission screen includes a Fresnel lens sheet through which light is
projected from a projector to a lenticular lens sheet arranged on a
viewer side, as approximately parallel light, and the lenticular lens
sheet receiving light passing through the Fresnel lens sheet, and
emitting the approximately parallel light while horizontally widening, by
means of a group of cylindrical lenses which are horizontally in
parallel, wherein in at least one of the Fresnel lens sheet and the
lenticular lens sheet, on a surface of a light diffusing substrate, in
which a light diffusing material is dispersed, irregularities which
constitute a lens section is formed, and in the light diffusing
substrate, dispersion density of the light diffusing material differs in
at least two layers in the thickness direction.