Arc tube for electrodeless lamp

Details Arc tube for electrodeless lamp Arc tube for electrodeless lamp

1995-08-01

1997-04-15

Patel, Nimeshkumar

Electric lamp and discharge devices

With gas or vapor

Envelope composition

313634, 313234, 313607, H01J 1716, H01J 6130

Patent

active

056212755

ABSTRACT:
An arc tube for an electrodeless metal halide discharge lamp has an arc chamber fabricated from a material selected from the group consisting of magnesia-doped polycrystalline alumina, silicon dioxide doped polycrystalline alumina and mono-crystalline alumina. The arc chamber is tubular and has at least one end and has a given outside diameter. At least one end cap closes the at least one end of the arc chamber, the end cap being formed from magnesia-doped polycrystalline alumina and comprising a substantially cup-shaped member having an inside diameter which is sealed to the outside diameter of the arc chamber by a shrink-fit.

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patent: 4783615 (1988-11-01), Dakin
patent: 4810938 (1989-03-01), Johnson et al.
patent: 5070277 (1991-12-01), Lapatovich

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