Traffic light

Details Traffic light Traffic light

F - Mech Eng,Light,Heat,Weapons

21

V

F21V 13/04 (2006.01) F21S 8/00 (2006.01) F21Q 3/00 (1990.01)

Patent

CA 2082525

2082525 9118242 PCTABS00008 A signalling light (1) including a light source (2) and a fresnel lens (3) to provide an output beam. A reflective surface (4) partially surrounds the light source (2) and defines an opening directed toward the fresnel lens (3) which has an area substantially less than that of the fresnel lens. A portion of the fresnel lens is directly radiated through the opening by light from the source and the reflective surface (4) directs substantially the remainder of the light from the globe toward the fresnel lens. The reflective surface (4) is arranged to provide uniform illumination of fresnel lens (3) by the light source (2) thus effectively utilizing all the available lens area. An external lens (6) is included to provide different angular spread in the horizontal and vertical directions as required for a particular application. Although primarily designed for use with traffic signalling lights other warning or indicating lights are applicable to the invention.

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