发明名称 |
Low pressure discharge lamp having sintered cold cathode discharge electrodes |
摘要 |
A fluorescent low pressure discharge lamp is provided with axially mounted cold-cathode electrodes consisting of a sintered shaped mixture of inorganic material including about 50-90% by weight of tungsten and the remainder BaO or a mixture of BaO, CaO and SrO and oxides of Y, Zr or Hf or the rare earths. The electrodes have a uniform density throughout with a porosity of less than 10%.
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申请公布号 |
US5585694(A) |
申请公布日期 |
1996.12.17 |
申请号 |
US19920927587 |
申请日期 |
1992.08.10 |
申请人 |
NORTH AMERICAN PHILIPS CORPORATION |
发明人 |
GOLDBURT, EFIM;WOODWARD, DAVID R. |
分类号 |
B22F5/00;H01J9/02;H01J61/06;H01J61/067;H01J61/30;H01J61/70;H01J61/72;H01J61/78;(IPC1-7):H01J61/067;H01J61/42 |
主分类号 |
B22F5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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