Patent ID: 8310145

Claim:
A light emitting device comprising: a light emitting element emitting light having a wavelength of 380 nm to 470 nm; a first red phosphor disposed on the light emitting element, the first red phosphor having a composition expressed by equation (1); a second red phosphor disposed on the light emitting element, the second red phosphor having a composition expressed by equation (2); and a green phosphor disposed on the light emitting element, the green phosphor having a composition expressed by equation (3), (Ca 1−x1 Eu x1 ) a1 AlSi b1 O c1 N d1 :Eu (1) wherein, in the equation (1), x1, a1, b1, c1 and d1 satisfy the following relationship: 0<x1<0.03, 0.90<a1<1.1, 0.9<b1<1.1, 0.20<c1<0.45, 2.40<d1≦3.00, (Sr 1−x2 Eu x2 ) a2 Si b2 AlO c2 N d2 :Eu (2) wherein, in the equation (2), x2, a2, b2, c2, and d2 satisfy the following relationship: 0<x2≦1, 0.60<a2<0.95, 2.0<b2<3.9, 0.04≦c2≦0.6, 4<d2<5.7, (Sr 1−x Eu x ) 3−y Si 13−z Al 3+z O 2+u N 21−w :Eu (3) wherein, in the equation (3), x, y, z, u, and w satisfy the following relationship: 0<x≦1, −0.1≦y≦0.15, −1≦z≦1, −1<u−w≦1.5.