Electrically modulatable thermal radiant source and method for manufacturing the same
First Claim
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1. An electrically modulatable radiant source comprising:
- an essentially planar substrate havinga well or hole formed into the substrate,at least one incandescent filament mounted to the substrate, said filament being aligned at said well or hole,contact pads formed onto the substrate, to both ends of the incandescent filament, for feeding electric current to the incandescent filament, and whereineach of the incandescent filaments is doped with phosphorus to an impurity concentration of at least 5×
1019 atoms/cm3.
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Abstract
A radiant source including an essentially planar substrate having a well or hole formed therein. At least one incandescent filament is mounted to the substrate and aligned at the well or hole. Contact pads are formed onto the substrate, to both ends of the incandescent filament, and feed electric current to the incandescent filament. Furthermore, each incandescent filament is doped with phosphorus to an impurity concentration of at least 5×1019 atoms/cm3.
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13 Claims
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1. An electrically modulatable radiant source comprising:
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an essentially planar substrate having a well or hole formed into the substrate, at least one incandescent filament mounted to the substrate, said filament being aligned at said well or hole, contact pads formed onto the substrate, to both ends of the incandescent filament, for feeding electric current to the incandescent filament, and wherein each of the incandescent filaments is doped with phosphorus to an impurity concentration of at least 5×
1019 atoms/cm3. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification