Patent ID: 9644801
Date: 2017-05-09
CPC Classifications: F21K,F21S,F21V,F21Y,G02B,Y10T

Claim:
1. A light-emitting element comprising: a light-emitting section which is irradiated with laser light and generates fluorescent light the laser light being incident on an incident surface of the light-emitting section; and a transparent member which covers the incident surface of the light-emitting section and exhibits transparency with respect to the laser light, wherein the transparent member includes a diffusing structure of isotropically scattering the laser light which passes therethrough and increasing a light-emission spot size of the laser light, the transparent member contains scattering fine particles with a refractive index which is different from a refractive index of a base material of the transparent member, or air bubbles, the transparent member comprises an upper portion which includes the fine particle or the air bubbles and receives the laser light and a lower portion which includes the fine particle or the air bubbles and covers the incident surface, the lower portion being disposed between the upper portion and the light emitting section, and a density of the scattering fine particles or the air bubbles in the upper portion of the transparent member is smaller than a density of scattering fine particles or the air bubbles in the lower portion of the transparent member.