发明授权
- 专利标题： Discharge lamp having an electrode with suppression of end portion deformation, discharge lamp electrode and method for producing same
- 专利标题（中）： 具有抑制端部变形的电极的放电灯，放电灯电极及其制造方法
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申请号： US09688970申请日： 2000-10-16
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公开(公告)号： US06817920B1公开(公告)日： 2004-11-16
- 发明人: Shinobu Furuta , Yoshitaka Kurimoto , Kazuhisa Tanaka , Tatsuya Taniwaki
- 申请人： Shinobu Furuta , Yoshitaka Kurimoto , Kazuhisa Tanaka , Tatsuya Taniwaki
- 优先权： JP11-297773 19991020
- 主分类号： H01J904
- IPC分类号： H01J904
摘要：
A discharge lamp electrode, a discharge lamp for which the electrode is used, and a method for producing a discharge lamp electrode with increased productivity are disclosed. With the disclosed discharge lamp electrode, deformations in its end portion are suppressed, so that the electrode life is extended. For the discharge lamp electrode 106, tungsten wires are wound around an electrode rod 111 in the same turning direction and form a first-layer coil 112 and a second-layer coil 113. A tungsten wire forming the second-layer coil 113 is wound along a spiral valley between adjacent turns in the first-layer coil 112.