Invention Grant
- Patent Title: Short arc type discharge lamp
- Patent Title (中): 短弧型放电灯
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Application No.: US12565870Application Date: 2009-09-24
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Publication No.: US08350476B2Publication Date: 2013-01-08
- Inventor: Hirohisa Ishikawa , Hiroyoshi Kitano , Nobuhiro Nagamachi , Toyohiko Kumada , Takashi Yamashita , Michiko Morooka
- Applicant: Hirohisa Ishikawa , Hiroyoshi Kitano , Nobuhiro Nagamachi , Toyohiko Kumada , Takashi Yamashita , Michiko Morooka
- Applicant Address: JP Tokyo
- Assignee: Ushio Denki Kabushiki Kaisha
- Current Assignee: Ushio Denki Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Rader, Fishman & Grauer PLLC
- Priority: JP2008-256249 20081001
- Main IPC: H01J17/16
- IPC: H01J17/16
Abstract:
A short arc type discharge lamp comprises a pair of electrodes, at least one of which has an electrode main body portion and an axis portion and/or a taper portion formed between the electrode main body portion and the axis portion, wherein in the at least one of the electrodes, the axis portion has an outer diameter smaller than that of the electrode main body portion, and at least one groove extending in an axis line direction of the electrode is formed in the electrode main body portion, the axis portion or the taper portion.
Public/Granted literature
- US20100079048A1 SHORT ARC TYPE DISCHARGE LAMP Public/Granted day:2010-04-01
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