Electric lamp and discharge devices – With luminescent solid or liquid material – Solid-state type
Reexamination Certificate
2005-01-18
2005-01-18
Patel, Nimeshkumar D. (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Solid-state type
C313S486000, C252S30140R, C252S30140P
Reexamination Certificate
active
06844671
ABSTRACT:
The present invention provides phosphor blends that are excitable by electromagnetic radiation having wavelengths in the near Uv-to-blue range (from about 315 nm to about 480 nm) to emit a visible light in a range of wavelengths from about 490 nm to about 770 nm. A phosphor blend of the present invention comprises a mixture of at least two phosphors. The first phosphor of the mixture comprises Sr2P2O7:Eu2+,Mn2+; wherein at least one element selected from the group consisting of Ba, Zn, Ca, and Mg partially substitutes strontium. The second phosphor is at least one selected from the group consisting of Sr4Al14O25:Eu2+; (Ba, Sr, Ca)MgAl10O17:Eu2+; (Ba, Sr, Ca)MgAl10O17:Eu2+,Mn2+; (Sr, Ba, Ca, Mg)5(PO4)3Cl:Eu2+; and 3.5 MgO.0.5MgF2.GeO2:Mn4+.
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Comanzo Holly Ann
Setlur Anant Achyut
Srivastava Alok Mani
Guharay Karabi
Patel Nimeshkumar D.
Patnode Patrick K.
Vo Toan P.
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