Patent ID: 8405111

Claim:
A semiconductor light-emitting device, comprising: a semiconductor light-emitting element; and a sealing material directly sealing the semiconductor light-emitting element, the sealing material consisting of a phosphor which comprises a matrix comprising a glass and a luminescence center included in the matrix, wherein the matrix comprising the glass has different refractive indices in a near side and in a far side of the semiconductor light-emitting element, the far side being located farther from the semiconductor light-emitting element than the near side, wherein the matrix comprising the glass has a higher refractive index at the far side than at the near side of the semiconductor light-emitting element, and wherein the refractive index of the matrix comprising the glass is the same as a refractive index of the semiconductor light-emitting element in the semiconductor light-emitting element and the phosphor sealing the semiconductor light-emitting element.