High-pressure discharge lamp, turning-on circuit device, and lig

Details High-pressure discharge lamp, turning-on circuit device, and lig High-pressure discharge lamp, turning-on circuit device, and lig

1996-10-10

1999-11-30

Shingleton, Michael B

Electric lamp and discharge devices

With temperature modifier

Double wall, jacket or casing for envelope

313323, H01J 102

Patent

active

059948230

ABSTRACT:
A high-pressure discharge lamp includes an external tube, and two luminescent tubes which extend in the tube axis direction in such a manner that one tube twists with respect to the other or vice versa and which are close to each other at least at one end of each tube and are more separate in the middle of the tubes than the ends close to each other.

REFERENCES:
patent: 2103029 (1937-12-01), Davies

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