High pressure gas discharge lamp and method of manufacturing...

Details High pressure gas discharge lamp and method of manufacturing... High pressure gas discharge lamp and method of manufacturing...

2007-03-06

2007-03-06

Guharay, Karabi (Department: 2879)

Electric lamp and discharge devices

With gas or vapor

Having particular electrode structure

C313S574000, C313S621000

Reexamination Certificate

active

10480420

ABSTRACT:
High pressure vapor discharge lamp provided with a discharge vessel. The discharge vessel encloses a discharge space provided with a filling of mercury and a rare gas, for example, in a gastight manner. An electrode is arranged in the discharge space for generating and maintaining a discharge therein, while the electrode comprises a rod electrode having an enlarged head at its end which projects into the discharge space. According to the invention, the enlarged head comprises a preformed electrode projection having an at least substantially conical shape.

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