Hollow cathodes with getter layers on inner and outer surfaces
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Abstract
A hollow cathode having at least a portion of the inner, outer or both surfaces coated with a layer of a getter material is described. Some methods for the production of the hollow cathode of the invention are also described, which include cathodic and electrophoretic deposition of the getter layer onto the hollow cathode.
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Citations
49 Claims
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1-29. -29. (canceled)
- 30. A cathode comprising an elongated cylindrical hollow part having a first end, a second end, an inner surface, and an outer surface, wherein the first end is substantially closed and the second end is substantially open, wherein at least a portion of the inner surface and at least a portion of the outer surface includes a layer of getter material.
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38. A cathode comprising:
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a cylindrical hollow part with an inner surface and an outer surface, wherein said cylindrical hollow part is substantially closed at a first end and substantially open an opposed end; and
a getter layer at least partially coating the inner surface and the outer surface of the cylindrical hollow part. - View Dependent Claims (39, 40, 41, 42, 43)
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44. A discharge lamp system comprising:
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a lamp structure;
a hollow cathode having a first end and a second end, wherein the first end is substantially open and the second end is substantially closed;
a fixed part, coupling the hollow cathode to the lamp structure, coupled to the second end of the hollow cathode; and
a getter layer supported by an inner and outer wall of the hollow cathode. - View Dependent Claims (45, 46, 47, 48, 49)
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Specification