Patent ID: 7157746

Claim:
A light emitting device, comprising: a light emitting element comprising a nitride semiconductor; and a phosphor which can absorb a part of light emitted from said light emitting element and can emit light of a wavelength different from that of said absorbed light, wherein the phosphor comprises at least one of divalent-europium-activated alkaline earth metal orthosilicates represented by a formula: (Sr (1-x-y) Ba x Ca y ) 2 (Si (1-α-β-γ-δ) P α Al β B γ Ge δ )O 4 :Eu 2+ where 0<x≦0.8, 0≦y<0.8, 0<x+y<1, 0≦α, β, γ<0.25, 0≦δ<0.5, 0≦α+β+γ+δ<1.