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公开(公告)号:US07279839B2
公开(公告)日:2007-10-09
申请号:US10506528
申请日:2003-03-05
申请人: Lars Menzel , Dietmar Ehrlichmann , Thomas Mehr , Stephen Berndanner , Wolfgang Spielmann , Gerhard Leichtfried
发明人: Lars Menzel , Dietmar Ehrlichmann , Thomas Mehr , Stephen Berndanner , Wolfgang Spielmann , Gerhard Leichtfried
IPC分类号: H01J17/04
CPC分类号: H01J61/0732 , H01J61/0737 , H01J61/86
摘要: A short arc high-pressure discharge lamp (1) for dc operation, includes a discharge vessel (2) that has two necks (4) diametrically opposite each other, in which an anode (26) and a cathode (7) made of tungsten are melted in a gastight manner, and which has a filling made of at least one noble gas and possibly mercury. According to the invention, at least the material of the cathode tip (11) contains lanthanum oxide La2O3 and at least another oxide from the group consisting of hafnium oxide HfO2 and zirconium oxide ZrO2 in addition to the abovementioned tungsten.
摘要翻译: 一种用于直流操作的短弧高压放电灯(1)包括具有两个直径相对的两个颈部(4)的放电容器(2),其中由钨制成的阳极(26)和阴极(7) 以气密的方式熔化,并且其具有由至少一种惰性气体和可能的汞制成的填充物。 根据本发明,至少阴极尖端(11)的材料包含氧化镧La 2 O 3 3和至少另一种氧化铪,氧化铪HfO 除了上述钨之外,还有二氧化锆和氧化锆ZrO 2。