Electric lamp and discharge devices – With gas or vapor – Incandescent filament lamp
Reexamination Certificate
2005-02-15
2005-02-15
Patel, Vip (Department: 2879)
Electric lamp and discharge devices
With gas or vapor
Incandescent filament lamp
C313S271000, C313S272000
Reexamination Certificate
active
06856090
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.
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Federal-Mogul Worldwide, Inc.
Patel Vip
Reising Ethington Barnes Kisselle P.C.
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