Arc tube for high-pressure mercury/metal halide lamp

Details Arc tube for high-pressure mercury/metal halide lamp Arc tube for high-pressure mercury/metal halide lamp

1975-03-18

1977-01-04

Demeo, Palmer C.

Electric lamp and discharge devices

With magnetic device

Field transverse to discharge

313217, 313220, 313229, H01J 61068, H01J 6120, H01J 6130

Patent

active

040016234

ABSTRACT:
A high-pressure mercury/metal-halide discharge lamp has the discharge electrodes offset below the central axis of the arc tube to increase the uniformity of the wall temperature and improve the performance of the lamp. The upper part of the arc tube wall is shaped to be nearer the electrodes at the ends and further from them at the center than in a cylindrical tube.

REFERENCES:
patent: 2830210 (1958-04-01), Jenne, Jr. et al.
patent: 2845557 (1958-07-01), Gottschalk
patent: 2888585 (1959-05-01), Martt et al.
patent: 3093769 (1963-06-01), Kuhl et al.
patent: 3614508 (1971-10-01), Ito et al.
patent: 3798487 (1974-03-01), Zollweg et al.
patent: 3858078 (1974-12-01), Koury
patent: 3896326 (1975-07-01), Fohl

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