Electrode, manufacturing method thereof, and metal vapor...

Details Electrode, manufacturing method thereof, and metal vapor... Electrode, manufacturing method thereof, and metal vapor...

2006-06-06

2006-06-06

Santiago, Mariceli (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

C313S623000, C313S574000, C313S491000, C313S331000

Reexamination Certificate

active

07057347

ABSTRACT:
A first electrode part in a rod shape is placed on an upper side, and a second electrode part in a rod shape having a higher melting point than that of the first electrode part is placed on a lower side, so that ends of the first and second electrode parts are brought into contact. Contact ends or vicinities thereof are irradiated with a laser beam, so that the electrode parts are welded. Here, a region irradiated with the laser beam is in a long narrow shape having a minor axis directed in a vertical direction and a major axis directed in a horizontal direction. This makes it possible to manufacture an electrode with a consistent high quality with a high yield.

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