Ce,Pr-coactivated strontium magnesium aluminate phosphor and lamp containing same
US7449129B2 · kind B2 · utility
2Cited by
14References
16Claims
0Family size
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Key dates
| Filing date | Mar 7, 2006 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Feb 13, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A Sr(Al,Mg)12O19:Ce,Pr phosphor is described wherein the phosphor has an increased sensitivity to excitation by 185 nm radiation compared to a Sr(Al,Mg)12O19:Ce phosphor. The Ce,Pr-coativated strontium magnesium aluminate phosphor emits ultraviolet (UV) radiation at about 306 nm in the UVB region. Suntan lamps made with this phosphor exhibit improved performance over lamps made with a commercial Sr(Al,Mg)12O19:Ce phosphor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.