High pressure metal halide lamp

Details High pressure metal halide lamp High pressure metal halide lamp

1994-05-26

1996-04-02

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Having a particular total or partial pressure

313641, 313642, H01J 6118

Patent

active

055043925

ABSTRACT:
The high pressure metal halide lamp has in a light transmitting discharge vessel discharge electrodes and a filling made of a rare gas, a buffer gas and at least one halide chosen from hafnium and zirconium bromide and chloride. The filling also includes a metal chosen from tin, tantalum and antimony in elementary form and is free from iodine in an amount exceeding 0.5 .mu.mol/cm.sup.3 discharge space. The lamp has considerably improved light generating properties.

REFERENCES:
patent: 5323085 (1994-07-01), Genz
patent: 5382873 (1995-01-01), Scholl et al.

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