Pulsed alkali metal vapor discharge lamp with ceramics outer env

Details Pulsed alkali metal vapor discharge lamp with ceramics outer env Pulsed alkali metal vapor discharge lamp with ceramics outer env

1988-04-14

1989-09-26

Yusko, Donald J.

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313642, 315117, H01J 1720, H01J 6134

Patent

active

048703168

ABSTRACT:
An alkali metal vapor discharge lamp is operable in a pulsed mode. The vapor discharge lamp includes an inner envelope made of first ceramics and an outer envelope made of second ceramics for enclosing the inner envelope under a vacuum atmosphere or an innert atmosphere. The inner envelope contains cesium, mercury and a rare gas, the vapor pressure of which cesium is selected from 400 to 1000 Torr. The second ceramics of the outer envelope is selected to be alumina ceramics.

REFERENCES:
patent: 3219869 (1965-11-01), Schmidt
patent: 3470415 (1969-09-01), Michalski
patent: 4173728 (1979-11-01), Witting
patent: 4418300 (1983-11-01), Otani et al.
patent: 4506369 (1985-03-01), Houston
Campbell, "Design of Pulsed Alkali Vapor Lamps Utilizing Alumina, Yttria and Sapphire Envelopes", IES 1971 Conference.

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