Invention Grant
- Patent Title: High pressure discharge lamp
- Patent Title (中): 高压放电灯
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Application No.: US13811469Application Date: 2011-06-23
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Publication No.: US08575837B2Publication Date: 2013-11-05
- Inventor: Yasuhisa Matsumoto , Toshio Yoshizawa , Atsushi Ohno
- Applicant: Yasuhisa Matsumoto , Toshio Yoshizawa , Atsushi Ohno
- Applicant Address: JP Chuo-ku, Tokyo
- Assignee: Iwasaki Electric Co., Ltd.
- Current Assignee: Iwasaki Electric Co., Ltd.
- Current Assignee Address: JP Chuo-ku, Tokyo
- Agency: Robinson Intellectual Property Law Office, P.C.
- Agent Eric J. Robinson
- Priority: JP2010-166765 20100726
- International Application: PCT/JP2011/064399 WO 20110623
- International Announcement: WO2012/014608 WO 20120202
- Main IPC: H01J17/20
- IPC: H01J17/20

Abstract:
A high pressure discharge lamp of the present invention is provided with a light-emitting bulb comprising a light-emitting part and sealing sections; metal foils embedded within the sealing sections; and a pair of electrodes having one end protruding into the light-emitting part and having the other end embedded in the corresponding sealing section and joined to the corresponding metal foil. An embedded length L (mm) of the electrodes that is defined by the length between a light-emitting part side end of the metal foil and the border section between the protruding section and the embedded section of the electrode, and the temperature T (° C.) at the joint region of the electrode and the metal foil are set to satisfy 1.8≦L≦2.8 and T≦970.
Public/Granted literature
- US20130119853A1 HIGH PRESSURE DISCHARGE LAMP Public/Granted day:2013-05-16
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