A lens sheet capable of preventing reflection of extraneous light without decreasing
extraneous light absorption, having extraneous light absorbers that can be readily
formed by printing and are scarcely stained. The present invention also provides
a rear projection screen including such a lens sheet. A rear projection screen
has a Fresnel lens sheet and a lenticular lens sheet placed on the viewing side
of the Fresnel lens sheet. The lenticular lens sheet has lenses formed on those
portions of the light-emergent-side surface of the sheet-shaped substrate part
through which light converged by other lenses pass, and extraneous light absorbers
formed on those portions of the light-emergent-side surface of the sheet-shaped
substrate part through which light converged by the other lenses does not pass.
Each extraneous light absorber includes a black-colored binder resin and a number
of light-diffusing particles subjected to coloring treatment, incorporated in the
binder resin.