Title:
【発明の名称】低圧水銀蒸気放電ランプ
Document Type and Number:
Japanese Patent JP2002528879
Kind Code:
A
Abstract:
The discharge vessel encloses a discharge space provided with a filling of mercury and a rare gas in a gastight manner. Each end portion (12a) of the lamp supports an electrode (20a) arranged in the discharge space. An electrode shield (22a) encompasses at least one of the electrodes (20a) and has a substantially spiral-shaped cross-section. Preferably, the electrode shield (22a) is made from a ceramic material and is covered with a material which reacts with or forms an alloy with alkaline earth metals released by the electrode (20a).
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Inventors:
Adriatic Ye Ha Pa Fan der Pol
Symmetric Tech Limited
Symmetric Tech Limited
Application Number:
JP2000578838A
Publication Date:
September 03, 2002
Filing Date:
September 20, 1999
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H01J61/10; H01J61/04; H01J61/72; (IPC1-7): H01J61/10
Attorney, Agent or Firm:
Akihide Sugimura (2 outside)