Invention Grant
- Patent Title: Electrode mount, high pressure discharge lamp using the same, and manufacturing methods of electrode mount and high pressure discharge lamp
- Patent Title (中): 电极安装,使用其的高压放电灯,以及电极安装和高压放电灯的制造方法
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Application No.: US13395733Application Date: 2011-06-28
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Publication No.: US08795019B2Publication Date: 2014-08-05
- Inventor: Atsushi Ohno , Kazushi Tominaga , Shinichi Takemasa
- Applicant: Atsushi Ohno , Kazushi Tominaga , Shinichi Takemasa
- 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: JP2010-205008 20100914
- International Application: PCT/JP2011/064770 WO 20110628
- International Announcement: WO2012/035846 WO 20120322
- Main IPC: H01J9/00
- IPC: H01J9/00 ; H01J61/36 ; H01J61/20 ; H01J9/32 ; H01J61/86 ; H01J9/28

Abstract:
To prevent bending of an electrode shaft portion by a method which requires minimum increase in production cost, in an electrode mount for a high pressure discharge lamp. A manufacturing method of an electrode mount for the high pressure discharge lamp includes: a process of subjecting the electrode mount to a heat treatment, the electrode mount including an electrode and a metal foil which are welded to each other; and an oxidation process of producing an oxide on a surface of the electrode shaft portion of the electrode by laser irradiation to form an oxidation portion on the surface, wherein a laser irradiation position is determined such that a whole or part of the oxidation portion is included in a sealing portion of the high pressure discharge lamp when the electrode mount is embedded in the sealing portion.
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