A lenticular lens sheet comprising lengthwise long lenticular lenses formed
on the light incident-side surface and light emergent-side surface
thereof, the lenticular lenses being constituted of cylindrical lenses
each having a long dimension in the top and bottom direction of a screen
when used, and satisfying
0.30.ltoreq..vertline.i.sub.0 (.theta..sub.H).vertline..ltoreq.0.36
when parallel light rays are made incident on the surface of its
incident-side lens at horizontal incident angles of 0.degree., -11.degree.
and +11.degree. and the emergent luminances of the respective light rays
are standardized by evaluating the emergent luminance at an emergent-side
horizontal visual angle 0.degree. to be 1, and the emergent luminances of
the respective light rays at a horizontal visual angle .theta..sub.H
.degree. are respectively represented by I.sub.0 (.theta..sub.H),
I.sub.-11 (.theta..sub.H) and I.sub.+11 (.theta..sub.H), and when
.vertline..theta..sub.H .vertline..ltoreq.40.degree. in the following
expression (1).
i.sub.0 (.theta..sub.H)=I.sub.0 (.theta..sub.H)/(I.sub.0
(.theta..sub.H)+I.sub.-11 (.theta..sub.H)+I.sub.+11 (.theta..sub.H))(1)
This makes it possible to obtain a lenticular lens sheet that may cause
less changes with changes in horizontal visual angles and has been
improved in color uniformity.