Thermally optimized cold cathode heater
AssigneeHewlett-Packard Development Company, L.P.
InventorsWilliam R. Haas, Kirk S. Tecu, Louis R. Turf, III
Life of this patent
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Abstract
Systems and methods for providing a thermally optimized cold cathode heater in which a heater wire is disposed in a plurality of turns are shown. Turns of the plurality of turns are closely spaced to concentrate heat in an area of a host cathode device corresponding to a cold cathode position and turns of the plurality of turns are disposed to minimize introduction of heat in an area of the host cathode device not corresponding to the cold cathode position.
Claims16
A system for providing a thermally optimized cold cathode heater, said system comprising:
- a heater wire disposed in a plurality of turns, wherein turns of said plurality of turns are closely spaced to concentrate heat in an area of a host cathode device corresponding to a cold cathode position, and wherein turns of said plurality of turns are disposed to minimize introduction of heat in an area of said host cathode device not corresponding to said cold cathode position;
- wherein said closely spaced turns of said plurality of turns comprise a first set of more than one turn corresponding to a first cathode of said host cathode device and a second set of more than one turn corresponding to a second cathode of said host cathode device;
- and
- wherein a low resistance conductor couples said first set of more than one turn to said second set of more than one turn.
A system comprising:
- a cold cathode heater having a heater wire disposed in a plurality of turns, wherein turns of said plurality of turns are more closely spaced in a portion of said cold cathode heater corresponding to a cold cathode position and less closely spaced in a portion of said cold cathode heater that does not correspond to said cold cathode position;
- wherein said plurality of turns comprises a first set of more than one turn and a second set of more than one turn;
- and
- wherein a portion of the heater wire coupling said first set of more than one turn and said second set of more than one turn does not provide heat output.
A method for providing heat to a cold cathode, said method comprising:
- wrapping a device having said cold cathode with a heater wire;
- varying spacing of the heater wire around the device to concentrate heat in an area of said device corresponding to said cold cathode and to minimize heat in an area of said device not corresponding to said code cathode;
- coupling the heater wire to a controller;
- and
- coupling a closely spaced plurality of turns with another closely spaced plurality of turns with a low resistance conductor.
Dependencies are inferred from the claim text.