Of the short arc type discharge lamp electrode and the short arc type discharge lamp

摘要

PROBLEM TO BE SOLVED: To provide an electrode of a short arc electric discharge lamp capable of suppressing the consumption of the electrode even under high pressure and high temperature environments and also of suppressing the recrystallization of the electrode and has a superior rate of keeping the illuminance, and also to provide a method of manufacturing the same and to provide a short arc electric discharge lamp.;SOLUTION: The short arc type electric discharge lamp 20 which is used with mercury and a noble gas sealed in a light emission tube 1 is provided with the electrode consisting of a cathode 3 and an anode 4 which are disposed face to face in the light emission tube. The electrode is heat-treated in a vacuum at a temperature in a range of 2300°C≤TMP, where T is a heat treatment temperature in a vacuum when at least either the cathode or the anode is manufactured and MP is a melting point of a metal used for the cathode or the anode.;COPYRIGHT: (C)2003,JPO