Light source
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United States of America Patent
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-
Aug 17, 2004
Grant Date -
N/A
app pub date -
Feb 22, 2002
filing date -
Aug 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A light source, in particular incandescent lamp, with a bulb (1), and filament (2) arranged in the bulb (1), and a heating device (3) for the filament (2), the filament (2) emitting both visible light and heat radiation, is designed and constructed with respect to a high conversion efficiency between electric power and visible light output such that the heating device (3) includes a heating element (4) for the indirect heating of the filament (2).
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Cited Art Landscape
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