Radiant energy – Radiant energy generation and sources
Reexamination Certificate
2007-06-11
2010-12-07
Souw, Bernard E (Department: 2881)
Radiant energy
Radiant energy generation and sources
C250S494100, C250S492300, C250S492100, C250S3960ML, C313S309000, C313S336000, C977S742000
Reexamination Certificate
active
07847273
ABSTRACT:
An electron gun, an electron source for an electron gun, an extractor for an electron gun, and a respective method for producing the electron gun, the electron source and the extractor are disclosed. Embodiments provide an electron source utilizing a carbon nanotube (CNT) bonded to a substrate for increased stability, reliability, and durability. An extractor with an aperture in a conductive material is used to extract electrons from the electron source, where the aperture may substantially align with the CNT of the electron source when the extractor and electron source are mated to form the electron gun. The electron source and extractor may have alignment features for aligning the electron source and the extractor, thereby bringing the aperture and CNT into substantial alignment when assembled. The alignment features may provide and maintain this alignment during operation to improve the field emission characteristics and overall system stability of the electron gun.
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Nguyen Cattien V.
Ribaya Bryan P.
ELORET Corporation
Logie Michael J
Souw Bernard E
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