Electric lamp and discharge devices – With gas or vapor – Envelope with particular structure
Patent
1998-10-19
2000-10-03
Pihulic, Daniel T.
Electric lamp and discharge devices
With gas or vapor
Envelope with particular structure
362 35, 362264, H01J 1716
Patent
active
H00018767
ABSTRACT:
Light sources include an electrodeless bulb having an interior, a fill contained within the interior of the bulb, an excitation structure that transmits electromagnetic energy to the fill in the bulb, and cooling fins extending radically outward from the bulb. The fill is excited by the electromagnetic energy to a plasma state that causes light emission and generates heat energy. The cooling fins, when rotated, draw air toward the bulb to cool the bulb. Alternatively, cooling may be provided by a rotatable squirrel cage about an electrodeless bulb. The light sources can be used in display systems, such as field sequential color systems.
Knox Richard M.
Mercer William Burton
Walker Dale S.
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