Positive contrast roadway lighting system

Details Positive contrast roadway lighting system Positive contrast roadway lighting system

2007-08-09

2009-06-16

Payne, Sharon E (Department: 2875)

Illumination

Light source and modifier

C362S261000, C362S291000, C362S296040, C362S431000, C359S853000, C359S869000

Reexamination Certificate

active

07547116

ABSTRACT:
A luminaire assembly generally includes a reflector having a center of symmetry and a lamp supported within the reflector, wherein the lamp is offset from the reflector center of symmetry, whereby light emitted from the lamp is reflected by the reflector in an asymmetric pattern. In a method of illuminating a roadway having traffic moving in a flow direction, a luminaire having a reflector and a lamp is mounted at a side of the roadway and light emitted from the lamp is reflected with the reflector whereby a greater portion of the reflected light is directed in the traffic flow direction than is directed against the traffic flow direction.

REFERENCES:
patent: 2600514 (1952-06-01), Mitchell
patent: 3740545 (1973-06-01), Franklin et al.
patent: 5211473 (1993-05-01), Gordin et al.
patent: 5690422 (1997-11-01), Brass
patent: 5938317 (1999-08-01), Thornton
patent: 6419378 (2002-07-01), Wedell et al.

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