Illumination – Light source and modifier – Ionized gas or vapor light source
Patent
1993-06-18
1996-12-17
Gromada, Denise L.
Illumination
Light source and modifier
Ionized gas or vapor light source
362293, 362294, 362305, 362374, F21K 700
Patent
active
055860150
ABSTRACT:
A sports lighting fixture having improved light delivery characteristics includes an elongated bare arc tube, high intensity discharge lamp disposed near the apex of a parabolically shaped reflector member. The reflector is constructed of a non-metallic material and by the orientation and positioning of the lamp within the reflector, an essentially oval shaped light pattern is generated. A light transmissive cover is disposed over the open end of the reflector. When projected onto the playing surface of a sports field, the oval shaped light pattern translates to an essentially circular shaped pattern which allows for a more uniform and efficient overlapping of the multiple light outputs at the playing field level. Louvers can be disposed within the reflector to further redirect any high angle light output into a lower angle which is more useful at the playing surface level.
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Baldwin Samuel L.
Freytag William D.
Osteen Mitchell M.
Cariaso Alan B.
General Electric Company
Gromada Denise L.
Hawranko George E.
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