Illumination – Revolving
Patent
1995-06-19
1997-06-10
Lazarus, Ira S.
Illumination
Revolving
362328, 362298, 362299, 362346, F21V 800
Patent
active
056369158
ABSTRACT:
A light source and optical delivery arrangement for use with a projection lighting system as may be used in the stage and studio fields, includes a high brightness light source which achieves a light output in excess of 4000 lumens at a power rating of approximately 60 watts and wherein such efficiency is achieved in conjunction with a rated life of greater than about 4000 hours for such light source. The light source is disposed at the first optical focal point of an ellipsoidally shaped reflector with an input end of an optical coupler disposed at the second optical focal point of the reflector in order to receive the light output from the light source. The optical coupler member has a cross-sectional surface area which is polygonal in shaped and is effective so as to provide a light output therefrom which is essentially uniform in terms of color and intensity. A prismatic member is disposed on the optical coupler member for re-directing the light output into a lens member. The lens member is effective for shaping the light output into the desired beam pattern.
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Cassarly William J.
Davenport John M.
Hansler Richard L.
Nagle Richard C.
General Electric Company
Hawranko George E.
Lazarus Ira S.
Sember Thomas M.
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