基本信息:
- 专利标题： A metal halide lamp and a lighting apparatus using the same
- 申请号：JP2004231232 申请日：2004-08-06
- 公开(公告)号：JP4402539B2 公开(公告)日：2010-01-20
- 发明人： 勲 太田 , 一男 武田 , 和重 阪本
- 申请人： パナソニック株式会社
- 专利权人： パナソニック株式会社
- 当前专利权人： パナソニック株式会社
- 优先权： JP2004231232 2004-08-06
- 主分类号： H01J61/88
- IPC分类号： H01J61/88 ; F21S8/02 ; F21Y101/00 ; H01J61/20
摘要：
Provided is a metal halide lamp capable of being dimmed, which is prevented from non-lighting due to leakage of an arc tube attributable to a crack occurring at thin tubes, as well as realizing a desired color characteristic. The metal halide lamp has an arc tube that includes an envelope made of translucent ceramic, a pair of electrodes, and metal halides, the metal halides including rare earth metal halide, sodium halide, and magnesium halide, the rare earth metal halide being at least one of dysprosium halide, thulium halide, holmium halide, cerium halide, and praseodymium halide, and the magnesium halide being at least one of magnesium iodide and magnesium bromide, where when a maximum lamp power P (W) is in a range of 70 W to 250 W, the following relations are satisfied: 0.0345A+0.0028B A>=0.021P+0.313; and B>=10.0, where A (mg) represents a total content of the metal halides, and B (mol %) represents a content ratio of the magnesium halide to the metal halides.
公开/授权文献:
- JP2006049210A Metal halide lamp and lighting device using same 公开/授权日：2006-02-16