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US 5,111,108 AGranted
Vapor discharge device with electron emissive material
AssigneesGTE Products Corporation, GTE Sylvania Incorporated
InventorsDavid A. Goodman, John L. Plumb, Rudy E. M. Geens, Richard A. Snellgrove, Elliot Wyner
Life of this patent
Estimating the term…
Abstract
An emissive material for use in a vapor discharge device including reacted Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4 wherein X satisfies the following: 1>X.gtoreq.0. A vapor discharge device is provided having an arc tube which includes electrodes therein coated with such emissive material.
Claims14
A vapor discharge device comprising:
- a base;
- a sealed outer envelope connected to said base;
- a pair of lead-in conductors extending from said base into said sealed envelope;
- at least one arc tube disposed within said sealed outer envelope, each arc tube comprising a discharge-substaining fill, a first electrode electrically connected to a first lead-in conductor of said pair of lead-in conductors, and a second electrode electrically connected to a second lead-in conductor of said pair of lead-in conductors, said first electrode and second electrode being adapted to have an elongated arc discharge maintained therebetween;
- and
- an electron emissive material disposed on said first electrode and said second electrode, said electron emissive material comprising reacted Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4 wherein X is in a range of from 0.05 to 0.95.
3 more elements
An emissive material for use in a vapor discharge device comprising reacted Ba.sub.x Sr.sub.1-x Y.sub.2 O.sub.4 wherein x is in a range of from 0.05 to 0.95.
Dependencies are inferred from the claim text.