Luminaire for residential roadway lighting

Details Luminaire for residential roadway lighting Luminaire for residential roadway lighting

F - Mech Eng,Light,Heat,Weapons

21

S

240/157

F21S 8/08 (2006.01)

Patent

CA 1123803

J. T. Barnes et al 1-1-3-1 LUMINAIRE FOR RESIDENTIAL ROADWAY LIGHTING ABSTRACT OF THE DISCLOSURE: A luminaire for roadway lighting using a one-piece reflector developing at least two collimated beams in each longitudinal direction. The collimated beams impinge on sloping faces of a refractor to diverge the beams into a regular pattern covering the street with a sharp cutoff at predetermined longitudinal distances from the luminaire. The refractor employs a compressed parabola comprised of radial sections of comparatively large focal length with steps and risers. The complex shape of the one-piece reflector may readily be produced by a reflector finish applied to a molded plastic matrix. In the luminaire, the prismatic surfaces of the inclined walls of the refractor diverge the formerly collimated beams in a carefully controlled manner to produce very uniform distribution of light. -1-

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