Arc lamp assembly with containment means surrounding light sourc

Details Arc lamp assembly with containment means surrounding light sourc Arc lamp assembly with containment means surrounding light sourc

1990-09-11

1992-06-16

DeMeo, Palmer C.

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313634, H01J 6134, H01J 6152

Patent

active

051227061

ABSTRACT:
A metal halide arc lamp assembly has a configuration which provides improved containment performance in the event that the arc tube bursts. The lamp assembly includes a metal halide arc tube, a cylindrical quartz shroud surrounding the arc tube and a sealed outer envelope enclosing the shroud and the arc tube. The arc tube has press seals with a generally I-shaped cross section. The maximum dimension of the press seals perependicular to the arc tube axis is not substantially greater than the maximum dimension of the bulb portion of the arc tube. The spacing between the outside surface of the bulb portion and the inside surface of the shroud is not greater than about three millimeters.

REFERENCES:
patent: 3138731 (1964-06-01), Beese
patent: 3250934 (1966-05-01), Peterson
patent: 4721876 (1988-01-01), White et al.
patent: 4918352 (1990-04-01), Hess et al.
patent: 4961019 (1990-10-01), White et al.

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