Electrode of discharge lamp

Details Electrode of discharge lamp Electrode of discharge lamp

1977-11-17

1979-01-23

Ansher, Harold

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

313218, 313311, 313346R, 427 77, 427111, 427126, 428472, 428539, H01G 101, H01J 114, H01J 130

Patent

active

041362276

ABSTRACT:
An electrode of a high pressure metal-vapor lamp such as a high pressure mercury-vapor lamp including mercury and rare-gas and a high pressure sodium-vapor lamp including mercury, rare-gas and sodium, is disclosed.
The electrode has an improved electron emission material containing beryllium oxide and yttrium oxide coated on the substrate of the electrode whereby the electron emission material is uniformly coated to form an electron emission material layer which is firmly bonded and the starting characteristic is excellent and the lumen maintenance is excellent.

REFERENCES:
patent: 3170772 (1965-02-01), Sato et al.
patent: 3227905 (1966-01-01), Talcott
patent: 3558966 (1971-01-01), Hill
patent: 3719856 (1973-03-01), Koppius
patent: 3742282 (1973-06-01), Siegle
patent: 3919581 (1975-11-01), Datta
patent: 3922428 (1975-11-01), Cronin
patent: 4052634 (1977-10-01), De Kok
patent: 4082906 (1978-04-01), Amin et al.

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