Radiant energy – Radiant energy generation and sources – With radiation modifying member
Patent
1997-08-04
1998-11-17
Nguyen, Kiet T.
Radiant energy
Radiant energy generation and sources
With radiation modifying member
2504931, 2504951, H05B 326
Patent
active
058380167
ABSTRACT:
An improved IR radiation source is provided by the invention. A radiation filament has a textured surface produced by seeded ion bombardment of a metal foil which is cut to a serpentine shape and mounted in a windowed housing. Specific ion bombardment texturing techniques tune the surface to maximize emissions in the desired wavelength range and to limit emissions outside that narrow range, particularly at longer wavelengths. A combination of filament surface texture, thickness, material, shape and power circuit feedback control produce wavelength controlled and efficient radiation at much lower power requirements than devices of the prior art.
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