Discharge lamp having a cathode with a sintered tip insert

Details Discharge lamp having a cathode with a sintered tip insert Discharge lamp having a cathode with a sintered tip insert

1995-06-29

1997-05-06

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Having a particular total or partial pressure

313620, 313631, 313632, H01J 6104

Patent

active

056274300

ABSTRACT:
A discharge lamp in which vaporization and melting of a cathode tip are prevented and which has stable luminous operation over a long is achieved according to the invention by the fact that the discharge lamp has a cathode in which a sintered body made of a powdered metal with a high melting point and a powdered emitter material is inserted in the tip, and the relationship:

REFERENCES:
patent: 3902090 (1975-08-01), Ekkelboom et al.
patent: 3970888 (1976-07-01), Tratiner
patent: 4937496 (1990-06-01), Neiger et al.
patent: 5481159 (1996-01-01), Hiramoto et al.

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