Electric lamp and discharge devices – With luminescent solid or liquid material – With gaseous discharge medium
Patent
1980-06-20
1982-10-26
Nussbaum, Marvin L.
Electric lamp and discharge devices
With luminescent solid or liquid material
With gaseous discharge medium
313213, 313217, 313305, H01J 6142, H01J 1706
Patent
active
043564283
ABSTRACT:
An improved lighting system (10) which in the preferred embodiment includes a cathode (12) having an external surface (34) being coated with a cathode outside film (40) for emitting electrons therefrom. A first anode (14) extends internal to the cathode (12) for heating the cathode (12) to thereby emit electrons from the external surface (34). A second anode (16) is positionally located external to the enclosed cathode (12) for accelerating the electrons emitted from the cathode external surface (34). A bulb member (18) encompasses the cathode (12), the first anode (14), and the second anode (16) in a hermetic type seal. The bulb member (18) has a predetermined gas composition contained therein with the gas composition atoms being ionized by the cathode emitted electrons. The gas composition ionized atoms radiate in the ultraviolet bandwidth of the electromagnetic spectrum. The bulb member (18) is coated with a fluorescent material (20) for intercepting the ultraviolet energy responsive to the ionization of the gas composition atoms. The fluorescent material (20) radiates in the visible bandwidth of the electromagnetic spectrum to give a visible light output.
REFERENCES:
patent: 1408053 (1922-02-01), Wensley
patent: 2267118 (1941-12-01), Marden
patent: 2845567 (1958-07-01), Geiger
patent: 3334269 (1967-08-01), L'Heureux
patent: 3476970 (1969-11-01), Gillies et al.
Intent Patent A.G.
Nussbaum Marvin L.
Rosenberg Morton J.
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