Incandescent lamp having a reflecting screen and tongue

Details Incandescent lamp having a reflecting screen and tongue Incandescent lamp having a reflecting screen and tongue

1985-07-23

1987-08-11

DeMeo, Palmer C.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313580, H01K 126

Patent

active

046864105

ABSTRACT:
According to the invention, an electric incandescent lamp provided with a longitudinally arranged filament (6) and an elongate concave screen (11) cooperating with the filament has in this screen (11) a reflecting tongue (16), which gradually moves away from a flat base portion (13) of this screen (11) and faces the filament (6) throughout its length and extends towards the end (7) of the filament (6) remote from the seal (2) of the lamp vessel (1). The lamp, when used in a headlight having a flattened paraboloidal reflector, produces a dipped beam of higher luminous intensity.

REFERENCES:
patent: 3646385 (1972-02-01), Wichert
patent: 4361780 (1982-11-01), Brons

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