发明名称 |
Fluorescent lamp with phosphor coating of multiple layers |
摘要 |
A low pressure mercury vapor discharge lamp is provided, having a non-straight glass envelope and a plurality of rare earth phosphor layers coated inside the glass envelope. The lamp is made by coating a plurality of rare earth phosphor layers inside a straight glass tube. The tube is then formed into a non-straight configuration, each layer being sufficiently thin so that the phosphor coating does not flake off in sections where the tube is bent around a radius of curvature. A plurality of thin rare earth phosphor layers will not flake off in the bent section whereas a single thick rare earth phosphor layer will flake off. The invention is particularly useful in the manufacture of helical compact fluorescent lamps.
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申请公布号 |
US5944572(A) |
申请公布日期 |
1999.08.31 |
申请号 |
US19970957572 |
申请日期 |
1997.10.24 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
SOULES, THOMAS F.;WHITMAN, PAMELA K.;CHIRAYATH, DANIEL R. |
分类号 |
H01J9/24;H01J9/22;H01J61/32;H01J61/42;H01J61/44;H01J61/48;(IPC1-7):H01J61/42 |
主分类号 |
H01J9/24 |
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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