发明授权
- 专利标题： Short arc type discharge lamp
- 专利标题（中）： 短弧型放电灯
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申请号： US13245028申请日： 2011-09-26
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公开(公告)号： US08400060B2公开(公告)日： 2013-03-19
- 发明人: Tomoyoshi Arimoto , Mitsuru Ikeuchi , Akihiro Shimizu
- 申请人： Tomoyoshi Arimoto , Mitsuru Ikeuchi , Akihiro Shimizu
- 申请人地址： JP Tokyo
- 专利权人： Ushio Denki Kabushiki Kaisha
- 当前专利权人： Ushio Denki Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Roberts Mlotkowski Safran & Cole, P.C.
- 代理商 David S. Safran
- 优先权： JP2010-223930 20101001
- 主分类号： H01J17/04
- IPC分类号： H01J17/04
摘要：
A short arc type discharge lamp wherein a cathode and an anode are arranged opposite to each other in an interior of a light emitting tube and said cathode consists of a main body part with tungsten as the main constituent and an emitter part comprised of thoriated tungsten, wherein an oxygen content of the main body part of said cathode is lower than that of the emitter part, and band-shaped tungsten carbide is formed at the tip end face of the emitter part of said cathode.
公开/授权文献
- US20120081002A1 SHORT ARC TYPE DISCHARGE LAMP 公开/授权日：2012-04-05