Low pressure metal vapor discharge lamp with tubular member and

Details Low pressure metal vapor discharge lamp with tubular member and Low pressure metal vapor discharge lamp with tubular member and

1978-05-02

1979-12-04

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

313161, 313204, 313493, H01J 150, H01J 6110, H01J 6130, H01J 6142

Patent

active

041774019

ABSTRACT:
A low pressure metal vapor discharge lamp has a discharge envelope of a double tube structure filled with an inert gas and a small quantity of metal. The discharge envelope comprises a sealed outer glass bulb, and an inner glass tube disposed within the outer glass bulb substantially concentrically therewith and having one open end and the other closed end. The lamp further has a single cathode inside the inner glass tube, a plurality of anodes disposed exteriorly of the inner glass tube and interiorly of the outer glass bulb, and a permanent magnet disposed near the open end of the inner glass tube for applying a magnetic field of a fixed intensity near the open end.

REFERENCES:
patent: 2411510 (1946-11-01), Abadie
patent: 3079521 (1963-02-01), Clark
patent: 3609436 (1971-09-01), Campbell

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