Metal vapor discharge lamp

Electric lamp and discharge devices – With gas or vapor – Having a particular total or partial pressure

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313568, 313620, 313637, H01J 6112

Patent

active

054811597

ABSTRACT:
A discharge lamp uses resonance lines which are emitted by ions in an excitation state and has a high short wave ultraviolet ray output. The lamp is provided with a pair of electrodes, having a reciprocal spacing of equal to or smaller than 12 mm, and is of the electrode-stable type. As the major emission material, cadmium is encapsulated in a quantity permitting a partial pressure P in operation of 3.times.10.sup.3 Pa to 1.3.times.10.sup.5 Pa. The lighting operation is performed in a state in which a lamp current J.sub.L fulfills the following condition (a):

REFERENCES:
patent: 3706000 (1972-12-01), Retzer et al.
patent: 4594529 (1986-06-01), De Vrijer
patent: 4704346 (1987-11-01), Hiramoto et al.

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