Rare earth metal halide lamp including niobium

Details Rare earth metal halide lamp including niobium Rare earth metal halide lamp including niobium

1996-07-22

1998-11-03

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

With particular gas or vapor

313571, H01J 6120

Patent

active

058313885

ABSTRACT:
A projection lamp includes a metal halide discharge lamp (1) with a lightansparent discharge vessel (2) in which two electrodes (3) stand opposite one another, which are joined with current leads (5) led to the outside, whereby the discharge vessel contains an ionizable filling including mercury, at least one noble gas, at least one halogen, one rare-earth metal (RE) as well as another metal, niobium, for the formation of metal halides. The addition of metallic niobium provides the lamp with good color reproduction and good arc stability.

REFERENCES:
patent: 3748520 (1973-07-01), Silver
patent: 4074166 (1978-02-01), Webb et al.
patent: 4290097 (1981-09-01), Black et al.
patent: 4422011 (1983-12-01), Bruninx-Poesen et al.
patent: 4672267 (1987-06-01), Lapatarich et al.
patent: 5220244 (1993-06-01), Maseki et al.
patent: 5264760 (1993-11-01), Genz et al.

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