High efficacy lamp in a configured chamber

Details High efficacy lamp in a configured chamber High efficacy lamp in a configured chamber

2006-11-21

2006-11-21

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having specified electrode spacing

C313S637000, C313S639000, C313S634000

Reexamination Certificate

active

07138765

ABSTRACT:
An arc discharge metal halide lamp having a discharge chamber having visible light permeable walls bounding a discharge region supported electrodes in a discharge region spaced apart by a distance Lewith an average interior diameter equal to D so they have a selected ratio. Ionizable materials are provided in this chamber involving a noble gas, one or more halides, and mercury in an amount sufficiently small so as to result in a relatively low maximum voltage drop between the electrodes during lamp operation.

REFERENCES:
patent: 3786297 (1974-01-01), Zollweg et al.
patent: 5153482 (1992-10-01), Keijser et al.
patent: 5973453 (1999-10-01), Van Vliet et al.
patent: 6130511 (2000-10-01), Rothwell et al.
patent: 6300729 (2001-10-01), Keijser et al.
patent: 56091368 (1981-07-01), None

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