White light-emitting lamp and illuminating device using the...

Details White light-emitting lamp and illuminating device using the... White light-emitting lamp and illuminating device using the...

2011-06-14

2011-06-14

Rodriguez, Armando (Department: 2828)

Coherent light generators

Short wavelength laser

C372S022000, C372S042000

Reexamination Certificate

active

07961762

ABSTRACT:
A white light-emitting lamp (1) includes a light-emitting portion (9) which is excited by light emitted from a semiconductor light-emitting element (2) to emit white light. The light-emitting portion (9) contains a blue phosphor, a yellow phosphor and a red phosphor. The yellow phosphor is composed of a europium and manganese-activated alkaline earth silicate phosphor having a composition expressed by (Sr1-x-y-z-u, Bax, Mgy, Euz, Mnu)2SiO4(0.1≦x≦0.35, 0.025≦y≦0.105, 0.025≦z≦0.25, 0.0005≦u≦0.02).

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