Illumination – Light source and modifier – Carbon arc type
Patent
1991-03-13
1992-07-28
Cole, Richard R.
Illumination
Light source and modifier
Carbon arc type
362296, 362263, F21V 712
Patent
active
051345579
ABSTRACT:
An apparatus and method for increasing the amount, efficiency, and flexibility of use of light from an arc lamp. A first aspect of the invention includes an arc lamp in a lighting fixture wherein the arc tube positioned within the arc lamp has a longitudinal axis which is offset and/or tilted from the general longitudinal axis of the arc lamp. A second aspect of the invention involves methods and structures to position the arc tube of an arc lamp in a generally horizontal or vertical position irregardless of the aiming direction for the light from the arc lamp, and any related reflecting apparatus. The longitudinal axis of the arc tube can either be offset and/or tilted with respect to the longitudinal axis of the arc lamp, or they can be coaxial and the entire arc lamp can be positioned horizontally or vertically, offset and/or tilted from the aiming direction of the fixture and any attendant reflecting structure. A third aspect of the invention utilizes methods and structure to adjust the arc lamp to a desired rotational orientation with respect to a reflecting structure. A fourth aspect of the invention involves apparatus to allow desired mounting of the arc lamp to insure the desired orientation of the arc tube with respect to the arc lamp and to any mounting or reflecting structure.
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Drost Jim L.
Gordin Myron K.
Cole Richard R.
Musco Corporation
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