发明名称 |
Light source for high efficiency illumination systems |
摘要 |
A filament array for an incandescent lamp comprises a plurality of helically-coiled filament sections ( 7 - 10 ), which are arranged in one or more planes. The filament sections are of varying lengths whereby the array approximates the cross-sectional shape of the light beam which is to be projected by the lamp, as indicated for example by the circle ( 11 ).
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申请公布号 |
US2007018574(A1) |
申请公布日期 |
2007.01.25 |
申请号 |
US20060476489 |
申请日期 |
2006.06.28 |
申请人 |
DAVIES ANDREW;HUME ROGER A |
发明人 |
DAVIES ANDREW;HUME ROGER A. |
分类号 |
H01J19/42;H01K1/50 |
主分类号 |
H01J19/42 |
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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