Pulse simmer flash lamp cathode

Details Pulse simmer flash lamp cathode Pulse simmer flash lamp cathode

1991-08-28

1992-12-01

O'Shea, Sandra L.

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

313 23, 313 42, 362373, H01J 1728, H01J 6104, H01J 6152

Patent

active

051681943

ABSTRACT:
A flash light operating in the "pulse and simmer" mode has a cathode and an anode 18 mounted at opposite ends of a transparent envelope 10. The cathode, which may be water cooled, includes a mount 24 and a tip 26 joined to the mount by an undercut neck portion 28. Thus the tip 26 runs at an increased operational temperature due to the reduced thermal conductivity of the neck portion. The ratio of the diameter D of the tip 26 to its axial dimension C from the neck portion 28 may be in the range 0.3 to 0.5.

REFERENCES:
patent: 2682006 (1954-06-01), Ferrari, Jr.
patent: 3248586 (1966-04-01), Schlegel
patent: 3930176 (1975-12-01), Panico
patent: 4734835 (1988-03-01), Vines et al.

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