Patent ID: 8269410

Claim:
A light-emitting device comprising: a light source configured to emit light by a driving current; and at least one wavelength-converting material which absorbs at least a part of the light from the light source and emits light having a different wavelength, wherein the light-emitting device has an emission efficiency of 32 lm/W or more and a general color rendering index Ra of 80 or more; and a color coordinate x 1 (17.5) and a color coordinate y 1 (17.5) of light emitted at a driving current density of 17.5 A/cm 2 , a color coordinate x 1 (70) and a color coordinate y 1 (70) of light emitted at a driving current density of 70 A/cm 2 , and shift amounts [x 1 (17.5)−x 1 (70)] and [y 1 (17.5)−y 1 (70)] in the color coordinates x and y satisfy Expressions (F) and (G): −0.01 ≦x 1 (17.5)− x 1 (70)≦0.01 (F), and −0.01 ≦y 1 (17.5)− y 1 (70)≦0.01 (G).