Illumination – Light source and modifier – Louvered or grid type modifier
Patent
1995-10-04
1996-06-18
Gromada, Denise L.
Illumination
Light source and modifier
Louvered or grid type modifier
362291, 362342, F21V 1106
Patent
active
055284787
ABSTRACT:
The lighting fixture according to the invention includes a fixture housing having a longitudinal axis and supporting a fluorescent lamp in the housing. Side reflectors are provided which extend parallel to the longitudinal axis of the housing on either side of the lamp. A plurality of cross vanes and two end vanes are positioned below and perpendicular to the longitudinal axis of the lamp. Each cross vane has a top surface of a generally V-shaped configuration and reflector surfaces extending from the top surface. The reflector surfaces are concavely curved with a radius of curvature which varies along the width of the cross vane. The end vanes also include a generally V-shaped top surface and one reflector surface with is concavely curved with a radius of curvature which varies along the width of the end vane. The cross vanes and end vanes according to the invention confine substantially all of the light to within the preferred RP-24 cut-off zone and prevent unnecessary reflections which lower efficiency.
REFERENCES:
patent: 3591798 (1971-07-01), Florence
patent: 4539628 (1985-09-01), Bartenbach
patent: 4888668 (1989-12-01), Roll
patent: 5029059 (1991-07-01), Grimm
ERCO Program 1991/93, Lighting brochure.
ParaLyte 848, Recessed Fluorescent Lighting brochure.
LIGHTOLIER, The Central Trough System.
Siemens, SiDeko, Mounted and Recessed Ceiling Luminaires with variable Lighting Technology, brochure.
Basichas Alfred
Cooper Industries Inc.
Gromada Denise L.
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