Front projection screen

Details Front projection screen Front projection screen

2005-05-24

2005-05-24

Mahoney, Christopher (Department: 2851)

Optical: systems and elements

Projection screen

C359S449000

Reexamination Certificate

active

06898008

ABSTRACT:
A front projection screen includes a plane base layer forming a plurality of parallel outwardly-protruding annular bars on the light-reflecting side surface thereof. Each bar contains an outside surface facing the projection light source and being a light-reflecting portion, and an outside surface not facing the projection light source and being a stray-light absorbing portion. The two surfaces intersect each other. All bottom interfaces between the bars and the base layer are in a common plane. All outside surfaces of these bars have a common focus point. The outside surface is arranged in such a manner that the outside surface of each bar does not block the projection light incident on the whole outside surface of its adjacent bar.

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