Electric lamp and discharge devices – Electrode and shield structures – Cathodes containing and/or coated with electron emissive...
Patent
1982-01-18
1984-09-11
Lee, John D.
Electric lamp and discharge devices
Electrode and shield structures
Cathodes containing and/or coated with electron emissive...
313341, 313345, H01J 114, H01J 1906, H01K 104
Patent
active
044712600
ABSTRACT:
An oxide cathode comprising a metal base substantially consisting of titanium and a heating element for heating said base, on which base a porous layer comprising an alkaline earth metal oxide is provided. The cathode has a comparatively low operating temperature, a short warm up time and a low power requirement.
REFERENCES:
patent: 4215180 (1980-07-01), Misumi et al.
patent: 4302702 (1981-11-01), Montgaillard et al.
patent: 4313854 (1982-02-01), Sunahara et al.
Hasker Jan
Jacobs Jacobus H.
Opmeer Peter
Verhoeven Johannes A. T.
Kraus Robert J.
Lee John D.
U.S. Philips Corporation
Wise Robert E.
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