Double-ended metal halide arc discharge lamp with electrically i

Details Double-ended metal halide arc discharge lamp with electrically i Double-ended metal halide arc discharge lamp with electrically i

1993-12-20

1994-08-23

Bradley, P. Austin

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

445 44, H01J 926

Patent

active

053403460

ABSTRACT:
A double-ended arc discharge lamp includes a sealed, light-transmissive outer jacket, a light-transmissive shroud mounted within the outer jacket and directly supported by the outer jacket, and an arc discharge tube mounted within the shroud. The arc tube is typically a metal halide arc discharge tube. In a preferred embodiment, the shroud includes an outwardly flared portion at each end. The outwardly flared portions space the shroud from the outer jacket and support the shroud within the outer jacket. The outwardly flared portions of the shroud can be affixed to the outer jacket by fusing. The outer jacket can be provided with inwardly extending dimples for locating the shroud with respect to the outer jacket. In another embodiment, the outer jacket includes reduced diameter portions near each end which are attached to the shroud.

REFERENCES:
patent: 4580989 (1986-04-01), Fohl et al.
patent: 4620125 (1986-10-01), Keeffe et al.

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