Patent ID: 7237924
Filing Date: 2007-07-03
Classification: F21V,F21W,F21Y

Abstract:
1. An LED signal comprising: at least one LED arranged on a metal core PCB, said at least one LED has a footprint; a substantially planar optical element having a first surface facing toward the at least one LED and a second surface facing away from the at least one LED; at least one lens placed over said at least one LED; the at least one lens has an entry face, an exit face, and a side; the side has an upper total internal reflection portion and a lower portion; a carrier formed integrally with said at least one lens at the lower portion of said at least one lens wherein the lens controls light emitted from the LED at the entry face, the exit face and the upper total internal reflection surface; and said optical element having an optical surface on the second surface and a diffusing surface on the first surface, wherein said diffusing surface comprises a plurality of clusters and said optical surface collimates LED light diffused by said diffusing surface.