High-pressure discharge lamp with a sintered compact containing

Details High-pressure discharge lamp with a sintered compact containing High-pressure discharge lamp with a sintered compact containing

1996-07-30

1998-01-27

Patel, Ashok

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

313346R, 313633, 313311, 252521, H01J 1704, H01J 6173

Patent

active

057125317

ABSTRACT:
The invention concerns high-pressure discharge lamps, whose electrodes have a sintered compact (5) containing lanthanum oxide acting as an electron emitter, and this compact is surrounded by an electrode coil (6). Sintered compact (5) contains at least 90 weight % lanthanum oxide. In this way, a high thermal stability of sintered compact (5) and a good ignition performance of the lamp are assured with only negligible blackening of the discharge vessel over the service life of the lamp.

REFERENCES:
High temperature metal halide chemistry, proceedings of the symposium on . Hildenbrand & D.D. Cubiciotti pp. 85 -95.

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