| US 7,501,766 B2 | ||
| Lamp having an envelope with an oxidation resistant seal employing a unidirectional carbon fiber mat infiltrated with SiC | ||
| John H. Selverian, North Reading, Mass. (US); and Ernest Davey, Salem, N.H. (US) | ||
| Assigned to Osram Sylvania Inc., Danvers, Mass. (US) | ||
| Filed on Sep. 19, 2006, as Appl. No. 11/532,934. | ||
| Prior Publication US 2008/0067939 A1, Mar. 20, 2008 | ||
| Int. Cl. H01J 17/04 (2006.01) | ||
| U.S. Cl. 313—633 [313/623] | 7 Claims |
| 1. A lamp, comprising:
a high-temperature glass envelope, at least one feedthrough assembly, and a light source disposed within the envelope;
the at least one feedthrough assembly having an inner electrical lead connected to the light source, an outer electrical lead
for conducting electrical energy from an outside source to the light source, and an intermediate connector electrically connecting
the inner and outer electrical leads, the intermediate connector comprising a uni-directional carbon fiber mat infiltrated
with SiC and being resistant to oxidation within a temperature range up to 1200° C. and having a thermal expansion coefficient
in the range of 0-2 ppm/° C.; and
the intermediate connector being sealed within a seal area of the envelope.
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