发明名称 |
High color rendering fluorescent lamp |
摘要 |
A high color rendering fluorescent lamp having two-layered phosphor coating, wherein a first layer is formed immediately on the inner face of glass tube containing phosphors of alkaline earth halophosphate activated by antimony manganese or of alkaline earth holophosphate activated by antimony or both, and a second layer (an overriding layer) is formed on the first layer containing a phosphor having peak wavelength of emission at 470 nm-500 nm and absorbing line spectrum of mercury in visible short wavelength range, at least one of a phosphor of (Sr, Mg)3(PO4)2:Sn and a phosphor of (Sr, Ba)3(PO4)2:Sn.
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申请公布号 |
US4705986(A) |
申请公布日期 |
1987.11.10 |
申请号 |
US19870008144 |
申请日期 |
1987.01.22 |
申请人 |
MATSUSHITA ELECTRONICS CORPORATION |
发明人 |
IWAMA, KATSUAKI;TAKAHASHI, MUTSUO;SHIBATA, HARUO |
分类号 |
C09K11/08;C09K11/64;C09K11/71;H01J61/48;(IPC1-7):H01J61/48 |
主分类号 |
C09K11/08 |
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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