Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Patent
1994-03-31
1996-03-19
O'Shea, Sandra L.
Electric lamp and discharge devices
With gas or vapor
Incandescent filament lamp
313522, H01K 104
Patent
active
055005691
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.times.10.sup.19 atoms/cm.sup.3.
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Blomberg Martti
Korhonen Anssi
Lehto Ari
Orpana Markku
Esserman Matthew J.
Instrumentarium Oy
O'Shea Sandra L.
Vaisala Oy
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