Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Patent
1992-09-08
1993-08-10
Demeo, Palmer C.
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
313308, 313309, 313336, H01J 1924, H01J 2970, H01J 2918
Patent
active
052352447
ABSTRACT:
An arrangement for and method of automatically collimating an expanding electron beam emitted from a field emission cathode is disclosed herein. This is accomplished without an externally powered colimating or focusing electrode. Rather, a dielectric member is positioned around the path taken by the beam so that when the beam is initially turned on, it bombards the dielectric member with free electrons and thereby places a negative electrostatic charge, ultimately reaching the potential of the cathode electrode itself, on the dielectric member. This electrostatic charge, in turn, causes the cross-sectional configuration of the beam to contract.
REFERENCES:
patent: 3665241 (1972-05-01), Spindt et al.
patent: 3755704 (1973-08-01), Spindt et al.
patent: 3789471 (1974-02-01), Spindt et al.
patent: 3812559 (1974-05-01), Spindt et al.
patent: 3921022 (1975-11-01), Levine
patent: 4020381 (1977-04-01), Oess et al.
patent: 4163949 (1979-08-01), Shelton
patent: 4498952 (1985-02-01), Christensen
patent: 4721885 (1988-01-01), Brodie
patent: 4983878 (1991-01-01), Lee et al.
DeMeo Palmer C.
Innovative Display Development Partners
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