Universal burning alkali metal vapor lamp with amalgam storage i

Details Universal burning alkali metal vapor lamp with amalgam storage i Universal burning alkali metal vapor lamp with amalgam storage i

1976-08-26

1977-07-12

Demeo, Palmer C.

Electric lamp and discharge devices

Liquid electrode discharge devices

Auxiliary starting or holding electrode

313176, 313180, 313220, 313229, H01J 6122, H01J 6128, H01J 6130

Patent

active

040356825

ABSTRACT:
In a high pressure alkali metal vapor lamp arc tube having a sealed off metal exhaust tube projecting through an end closure, the tip of the exhaust tube is the cold spot where excess alkali metal condenses. A fine mesh screen friction-retained in the exhaust tube prevents passage of liquid droplets; any alkali metal impinging on the screen is slowly revaporized and condenses at the tip due to the higher temperature at the screen.

REFERENCES:
patent: 2251923 (1941-08-01), Druyvesteyn
patent: 3974410 (1976-08-01), Collins et al.
patent: 3983439 (1976-09-01), Blommerde et al.

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