- 专利标题： Phosphors with improved lumen output and lamps made therefrom
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申请号： US667772申请日： 1991-03-11
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公开(公告)号： US5113118A公开(公告)日： 1992-05-12
- 发明人: A. Gary Sigai , Keith A. Klinedinst
- 申请人： A. Gary Sigai , Keith A. Klinedinst
- 申请人地址： MA Waltham
- 专利权人： GTE Laboratories Incorporated
- 当前专利权人： GTE Laboratories Incorporated
- 当前专利权人地址： MA Waltham
- 主分类号： C09K11/02
- IPC分类号： C09K11/02 ; C09K11/57 ; H01J61/44 ; H01J61/46
摘要：
A phosphor having a continuous protective bi-layer coating of alumina surrounding silica surrounding the phosphor particles is disclosed. The method of making a bi-layer coating on phosphor particles is also disclosed. The first layer surrounding the phosphor is silica. The second layer surrounding the phosphor is alumina. The bi-layer phosphor is useful in fluorescent lamps providing improved maintenance and brightness. The bi-layer phosphor can also be used in high color rendition lamps employing blends of phosphors.
公开/授权文献
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