Electrode structure for high pressure sodium vapor lamps

Details Electrode structure for high pressure sodium vapor lamps Electrode structure for high pressure sodium vapor lamps

1984-11-19

1985-12-17

Moore, David K.

Electric lamp and discharge devices

With gas or vapor

Having electrode of alkali, alkaline or rare earth material

313631, 313633, H01J 61073, H01J 6134

Patent

active

045594732

ABSTRACT:
An electrode structure for sodium vapor lamps is disclosed having molybdenum metal wire coils wound around a tungsten shank to replace the customary all-tungsten electrode structure in these lamps. The improved electrode structures provide increased initial lumens with acceptable lumen maintenance.

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patent: 3935495 (1976-01-01), Scott, Jr. et al.
patent: 4034252 (1977-07-01), McVey
patent: 4065691 (1977-12-01), McVey
patent: 4105908 (1978-08-01), Harding et al.
patent: 4123685 (1978-10-01), Bhalla
patent: 4136227 (1979-01-01), Saito et al.
patent: 4199704 (1980-04-01), Varshneya et al.
patent: 4303848 (1981-12-01), Shimizu et al.

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