High brightness discharge light source

Details High brightness discharge light source High brightness discharge light source

1992-03-27

1993-08-24

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Having a particular total or partial pressure

313620, H01J 1704, H01J 6102

Patent

active

052392309

ABSTRACT:
A high brightness discharge light source includes an arctube having an arc chamber formed therein and in which is disposed a fill of gas energizable to a discharge condition. At least two electrodes extend into the arc chamber and are separated by an arc gap of between 2 and 3.5 mm. The dose of mercury disposed in the arc chamber and various arc tube dimensions are selected so as to achieve a balance between three constraints including operating voltage thereby defining lamp efficacy, convective stability and structural integrity of the discharge lamp. A balance between arc gap, arc chamber diameter, wall thickness and the mercury density of the lamp yield a discharge lamp which achieves a light output on the order of 50,000 lumens per square centimeter.

REFERENCES:
patent: 3619683 (1971-11-01), Weston
patent: 4198586 (1980-04-01), de Jong et al.
patent: 4594529 (1986-06-01), de Vrijer
patent: 5144201 (1992-09-01), Graham et al.

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