Cathode structure for short arc type discharge lamp

Details Cathode structure for short arc type discharge lamp Cathode structure for short arc type discharge lamp

1998-03-18

2000-08-22

Patel, Vip

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

313632, 313491, H01J 1704

Patent

active

061077410

ABSTRACT:
A discharge lamp of the short arc type with good light intensity stability in which arc fluctuation is suppressed is achieved, according to the invention by providing a discharge lamp of the short arc type which has an arc tube which surrounds the discharge space, hermetically sealed portions on the two ends of the arc tube, a cathode and an anode which are arranged opposite one another in the arc tube and which is operated such that the cathode is pointed upward, in by the cathode being supported by an inner lead which is held securely by the hermetically sealed portion, the outside diameter of the cathode being greater than the outside diameter of the inner lead, and by the relationship L.gtoreq.2.5D being satisfied, where D is the outside diameter of the cathode (mm) and L is the axial length of the cathode (mm).

REFERENCES:
patent: 5712530 (1998-01-01), Inoue et al.

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