High-pressure discharge lamp having a tungsten sheet electrode

Details High-pressure discharge lamp having a tungsten sheet electrode High-pressure discharge lamp having a tungsten sheet electrode

1985-11-19

1987-10-13

DeMeo, Palmer C.

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

313333, H01J 6106

Patent

active

047001070

ABSTRACT:
An electrode head for a high-pressure discharge lamp consists of tungsten sheet material formed as a flat or curved plate having an elongated end face having a transverse dimension at least three or five times the plate thickness. As a result the discharge arc terminates practically in pointed form on the electrode end face, and the electrode is heated relatively slightly but has a large surface for thermal emission.

REFERENCES:
patent: 1723929 (1929-08-01), Francotte
patent: 2876377 (1959-03-01), Retzer et al.
patent: 3080497 (1963-03-01), Noel et al.
patent: 4101799 (1978-07-01), Wiedijk et al.

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