Appeal No. 1998-1088 Page 3
Application No. 08/523,809
The appellant's projector screen also features a Fresnel
lens, lenticular lenses, and a protection panel. Projecting
parts of a predetermined height are formed on the rear side of
the panel facing the lenticular lenses. On the tip of each
projecting part, a black stripe absorbs light. The height of
the projecting parts is lower than that of a convex surface of
the lenticular lenses. In other words, the convex surfaces of
the lenticular lenses extend in the viewer's direction beyond
the black stripes. Because the light-spreading angle is not
unduly limited, the horizontal viewing angle is wider that of
the conventional projector screen.
Claim 1, which is representative for our purposes,
follows:
1. A projector screen comprising:
a Fresnel lens for collimating incident
light from a projection lens equipped in a light
projection apparatus;
a lenticular lens system comprising a
plurality of constituent lenses, extending in
parallel with respect to one another, for forming
and spreading an image from the collimating light by
said Fresnel lens; and
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