ENERGY CONVERTER
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United States of America Patent
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app pub date -
Mar 31, 2006
filing date -
Oct 14, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An incandescent lamp according to the present invention includes a radiator (such as a filament 102), which includes a plurality of cavities 120 that are arranged on at least some area of its surface in order to suppress radiations having wavelengths that are longer than a predetermined value, and a glass bulb 101 for shutting off the filament 102 from the air. The area of the filament 102 includes a layer including tungsten and carbon (such as a tungsten carbide layer), and a gas including carbon and an inert gas are enclosed within the glass bulb 101.
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