Indirect luminaire having an upper reflector for improved bright

Details Indirect luminaire having an upper reflector for improved bright Indirect luminaire having an upper reflector for improved bright

1997-07-11

2000-05-02

O'Shea, Sandra

Illumination

Elongated source light unit or support

Plural sources or supports therefor

362309, 362327, F21S 300

Patent

active

060564164

ABSTRACT:
An indirect luminaire having a housing with a top opening and a light source in the housing is provided with an exposed lens reflector system positioned over the top opening of the housing for receiving and redirecting source light from a position above the light source. The lensed reflector system includes an outer refracting lens element having a lens surface observable from below the luminaire and a substantially diffuse reflector substrate for the lens element. This system produces a light distribution pattern substantially governed by the internal reflection and refraction characteristics of the lens element and controlled brightness characteristics on the observable lens surface substantially governed by the diffuse reflection characteristics of the reflector substrate. A lens tower is suitably provided for holding the lensed reflective system in its operative position over the top opening of the luminaire housing. Preferably, the lens tower provides the diffuse reflector substrate for the lensed reflector system, with the lens element being removably attached to the lens tower so that the lens element can be readily replaced.

REFERENCES:
patent: 4053762 (1977-10-01), Barbson
patent: 4680684 (1987-07-01), Wolber
patent: 4866584 (1989-09-01), Plewman
patent: 5051878 (1991-09-01), Ngai

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