| 摘要 |
A high-pressure discharge lamp is produced using tungsten wire that is wound as a double coiled winding around an electrode metal rod, leaving a tip end thereof, and the double coiled winding is machined into a melted tip end by a YAG laser beam, with the remaining double coiled winding used as a coil. The tip end of the metal rod is machined into a nipple on the distal end of the melted tip. The melted tip has a diameter D 1 and a length L 1, the nipple has a proximal end having a diameter D 2 and a length L 2, and the coil and the melted tip end (including the nipple) have a volume V 1 and the melted tip end (including the nipple) has a volume V 2 , when the electrode assembly is machined to satisfy at least one of the conditions 0.15<=D 2 /D 1<= 0.3, 0.2<=L 2 /L 1<= 0.4, and 0.2<=V 2 /V 1<= 0.4.
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