Lamp bulb with integral reflector
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United States of America Patent
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Jan 30, 2001
Grant Date -
N/A
app pub date -
Sep 10, 1999
filing date -
May 20, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved electrodeless discharge lamp bulb includes an integral ceramic reflector as a portion of the bulb envelope. The bulb envelope further includes two pieces, a reflector portion or segment is cast quartz ceramic and a light transmissive portion is a clear fused silica. In one embodiment, the cast quartz ceramic segment includes heat sink fins or stubs providing an increased outside surface area to dissipate internal heat. In another embodiment, the quartz ceramic segment includes an outside surface fused to eliminate gas permeation by polishing.
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