초록 ▼

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 maximiz

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.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of surface preparation of a thin material blank as an infrared radiation source comprising:directing a means for modifying the surface of said material onto at least one planar surface of said blank, said means for modifying having been empirically determined t

[ What is claimed is:] [1.]1. A method of surface preparation of a thin material blank as an infrared radiation source comprising:directing a means for modifying the surface of said material onto at least one planar surface of said blank, said means for modifying having been empirically determined to produce specific texture features and feature sizes tailored to be associated with a specific range of infrared emission wavelengths when electrically excited;continuing the direction of said means for modifying to decrease the thermal mass of said blank, and,cutting said blank to form a geometry of the textured material suitable for mounting as an infrared radiation filament.