US 6,981,784 B2 | ||
Side projecting LED signal | ||
Eden Dubuc, Lachine (Canada) | ||
Assigned to GELcore, LLC, Valley View, Ohio (US) | ||
Filed on May 08, 2003, as Appl. No. 10/431,907. | ||
Claims priority of provisional application 60/384225, filed on May 30, 2002. | ||
Prior Publication US 2004/0004836 A1, Jan. 08, 2004 | ||
Int. Cl. F21V 5/00 (2006.01) |
U.S. Cl. 362—331 | 34 Claims |
1. A side projecting signal comprising:
a housing having a base;
a light source mounted in the interior of the housing, said light source comprising at least one LED;
a total internal reflection element, said total internal reflection element comprises:
a plurality of stepped levels; each said stepped level comprises
at least one curved entry face on a near side surface of the total internal reflection element;
one corresponding total internal reflection face corresponding to each said curved entry face; and
one corresponding exit face corresponding to each said total internal reflection face, said exit face on a far side surface
of the total internal reflection element;
wherein substantially all light from the light source incident upon each of said entry faces is refracted to be incident upon
the corresponding total internal reflection face, and substantially all of the light incident upon the corresponding total
internal reflection face is reflected to the corresponding exit face to redirect light from the light source into a side direction.
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