Claims
- 1. A tungsten-halogen lamp having commercially feasible maintenance comprising:
- (a) a light-transmitting hermetically sealed envelope enclosing an interior, said envelope being manufactured from a material selected from the group consisting of borosilicate and aluminosilicate glass, said envelope having an interior wall surface, the temperature of said interior wall surface during continuous operation of said lamp being less than two hundred degrees centigrade:
- (b) a tungsten filament mounted within said envelope;
- (c) a fill within said envelope, said fill including bromine, phosphorus, carbon, and an inert gas, wherein the phosphorus to carbon mass ratio is in the range of approximately 10:1 to 1:1, and
- (d) means for structurally and electrically completing said lamp.
Parent Case Info
This is a continuation of copending application Ser. No. 749,355 filed on 6-27-85, now abandoned.
US Referenced Citations (7)
Non-Patent Literature Citations (1)
Entry |
"Lamps and Lighting", 3rd ed., M. A. Cayless et al. (Ed.), pp. 169-173, 1983. |
Continuations (1)
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Number |
Date |
Country |
Parent |
749355 |
Jun 1985 |
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