发明名称 |
Metal halide lamp for automobile headlight |
摘要 |
A metal halide lamp for an automobile headlight is provided, which includes an arc tube in which a pair of tungsten electrodes are provided at both ends and a metal halide as a main component of a luminescent material and xenon gas as a buffer gas are sealed, wherein the tungsten electrodes contain not more than 0.4 wt % of thorium oxide, the metal halide contains scandium iodide, and a pressure of the xenon sealed in the arc tube is at least 0.4 MPa. This makes it possible to provide a long-life metal halide lamp for an automobile headlight that can achieve a further improved lumen maintenance factor and other life characteristics during 2000 hours or more of lighting.
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申请公布号 |
US2003178940(A1) |
申请公布日期 |
2003.09.25 |
申请号 |
US20020296731 |
申请日期 |
2002.11.25 |
申请人 |
YOSHIDA MASATO;KIRYU HIDEAKI |
发明人 |
YOSHIDA MASATO;KIRYU HIDEAKI |
分类号 |
H01J17/04;H01J17/16;H01J61/04;H01J61/073;H01J61/12;H01J61/30;H01J61/36;H01J61/82;(IPC1-7):H01J17/04 |
主分类号 |
H01J17/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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