Invention Application
- Patent Title: High-pressure discharge lamp, and manufacturing method, lighting method, and lighting device for the same
- Patent Title (中): 高压放电灯及其制造方法，照明方法和照明装置
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Application No.: US09844321Application Date: 2001-04-27
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Publication No.: US20010038267A1Publication Date: 2001-11-08
- Inventor: Shunsuke Ono , Yoshiki Kitahara , Haruo Nagai
- Priority: JP2000-131425 20000428
- Main IPC: H01J009/44
- IPC: H01J009/44 ; H01J061/073
Abstract:
A high pressure discharge lamp having a pair of electrodes with a space of 0.5 mm to 2.0 mm inclusive between them and disposed in an arc tube. An electrical discharge takes place between the electrodes. Each of the electrodes has an electrode rod and a head that is provided at the discharge side end of the electrode rod and having a larger diameter than the electrode rod. A surface of the head being opposite to the other electrode is convexly curved and a protruding part is formed in the vicinity of the center portion of the end of the head.
Public/Granted literature
- US06545430B2 High-pressure discharge lamp, and manufacturing method, lighting method, and lighting device for the same Public/Granted day:2003-04-08
Information query
