Ce,Pr-coactivated calcium pyrophosphate phosphor and lamp containing same
US7396490B2 · kind B2 · utility
1Cited by
4References
21Claims
0Family size
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Key dates
| Filing date | Apr 6, 2006 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Mar 7, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/44
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A UV-emitting, Ce,Pr-coactivated calcium pyrophosphate phosphor is provided wherein the Pr activator increases the phosphor's sensitivity to excitation by 185 nm radiation. The improved sensitivity to the 185 nm radiation allows the phosphor to make better use of the approximate 10% of the UV radiation that is emitted at 185 nm by a low pressure mercury discharge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.