Low mercury arc discharge lamp containing praseodymium

Details Low mercury arc discharge lamp containing praseodymium Low mercury arc discharge lamp containing praseodymium

1992-08-10

1994-11-08

Yusko, Donald J.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313641, 313642, 313571, 313161, 315248, 315344, H01J 1720, H01J 6112

Patent

active

053630157

ABSTRACT:
A high intensity electrodeless metal halide arc discharge lamp wherein RF energy is coupled to the arc discharge, contains a halide of praseodymium alone or in combination with other metals such as one or more rare earth metals, Na and Cs and is essentially mercury free (i.e., < 1 mg per cc of arc chamber volume).

REFERENCES:
patent: 3786297 (1974-01-01), Zollweg et al.
patent: 3906274 (1975-09-01), Silver et al.
patent: 4422011 (1983-12-01), Bruninx-Poesen et al.
patent: 4801846 (1989-01-01), Kramer et al.
patent: 4810938 (1989-03-01), Johnson et al.
patent: 4812702 (1989-03-01), Johnson
patent: 4959584 (1990-09-01), Anderson
patent: 4972120 (1990-11-01), Witting
patent: 5039903 (1991-08-01), Farrall

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