Low-pressure sodium vapour discharge lamp

Details Low-pressure sodium vapour discharge lamp Low-pressure sodium vapour discharge lamp

H - Electricity

01

J

313/104

H01J 7/18 (2006.01) H01J 61/26 (2006.01) H01J 61/30 (2006.01) H01J 61/74 (2006.01)

Patent

CA 1123888

PHN 8924 ABSTRACT A low-pressure sodium vapour discharge lamp having a potassium-containing glass discharge vessel with electrodes at the ends of the discharge vessel, the lamp comprising means which prevent the vapour pressure of potassium in the dis- charge vessel from exceeding 3x10-5 torr during the life of the lamp.

313785

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