Method of fabricating an incandescent halogen lamp having...

Details Method of fabricating an incandescent halogen lamp having... Method of fabricating an incandescent halogen lamp having...

2005-11-22

2005-11-22

Santiago, Mariceli (Department: 2879)

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

C445S029000, C445S033000, C140S07100R, C140S071500, C140S071600

Reexamination Certificate

active

06966811

ABSTRACT:
An incandescent halogen lamp used in connection with a vehicle headlamp system in which stray light attributable to reflection off of internal lamp components is reduced while the structural integrity of the lamp is maintained. The halogen lamp includes two filaments, several lead wires, and a support bridge all sealed within a glass envelope. Each filament is connected at its outermost end to a flattened end portion of a lead wire which extends along the length of the filament from near the support bridge to the upper end of the filament. The flattened outer ends of the lead wires have a narrow profile that is in alignment with the direction of illumination of light from their respective filaments. This arrangement reduces the surface area that could otherwise interfere with light emitted by the filaments, and thereby reduces the overall stray light produced by the lamp. The flattened outer ends can have a roughened surface to further help reduce the amount of light reflected off the lead wires.

REFERENCES:
patent: 2145186 (1939-01-01), Renftle et al.
patent: 2315504 (1943-04-01), Curtin
patent: 2632126 (1953-03-01), Curtis
patent: 3040204 (1962-06-01), Belknap
patent: 3840953 (1974-10-01), Martin
patent: 3988630 (1976-10-01), Anderson et al.
patent: 4370589 (1983-01-01), DeCaro et al.

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