发明名称 |
Metallic Concave Reflection Mirror, Light Source and Light Source Apparatus Using the Same, and Lighting Circuit Thereof |
摘要 |
This invention makes it possible to use a concave reflection mirror using metal in at least a concave reflective portion thereof for discharge lamps. The concave reflection mirror is characterized by including: a metallic concave reflective portion; and a neck portion for receiving therein a high voltage side seal portion of a high-pressure discharge lamp to be continuously applied with a d.c. voltage of 1000 V to 4000 V during an ignition phase, the neck portion protruding rearward from a central portion of the metallic concave reflective portion and being formed partially of an insulating member or entirely of an insulating material. The concave reflection mirror can have a concave reflective surface with improved curved surface precision thereby making it possible to reduce variations in brightness, use a multi-layered deposited film having a low heat resistance, and reduce the required cost considerably.
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申请公布号 |
US2008042538(A1) |
申请公布日期 |
2008.02.21 |
申请号 |
US20040572463 |
申请日期 |
2004.09.14 |
申请人 |
PHOENIX ELECTRIC CO., LTD. |
发明人 |
FUJII TOSHITAKA;NAKAGAWA ATSUJI;IKEDA TOMIHIKO;FURUKAWA HISAO |
分类号 |
H01J5/16 |
主分类号 |
H01J5/16 |
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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