High pressure, mercury vapor, metal halide discharge lamp

Details High pressure, mercury vapor, metal halide discharge lamp High pressure, mercury vapor, metal halide discharge lamp

1974-02-14

1976-05-18

Demeo, Palmer C.

Electric lamp and discharge devices

With magnetic device

Field transverse to discharge

313225, 313229, H01J 6120, H01J 6122

Patent

active

039581454

ABSTRACT:
A high pressure mercury vapour discharge lamp having a discharge vessel provided with electrodes between which the discharge is maintained during operation and comprising a quantity of rare gas as a starting gas and furthermore between 0.5 and 25 mg of mercury and between 1 and 20 .mu.g mol of at least one of the halides of tin (with the exception of fluoride) per cubic cm of contents of the discharge vessel. To decrease the colour temperature of the radiation emitted by the lamp the discharge vessel is furthermore provided with at least one of the halides of lithium (with the exception of fluoride), while up to a maximum of 50 mol % of lithium halide may be replaced by sodium halide.

REFERENCES:
patent: 3234421 (1966-02-01), Reiling
patent: 3279877 (1966-10-01), Smith et al.
patent: 3431447 (1969-03-01), Larson
patent: 3566178 (1971-02-01), Mori et al.
patent: 3586898 (1971-06-01), Speros et al.
patent: 3639801 (1972-02-01), Jacobs et al.
patent: 3781586 (1973-12-01), Johnson

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