Light emitting device and method of extracting light from light emitting device

摘要

The light emitting device includes a light emitting portion having a larger refraction index than air, and a medium which is provided on a light extraction surface extracting light from the light emitting portion and which has different haze ratios depending on a light incident angle, wherein a haze ratio is defined as follows:The light emitting device improves the light extraction efficiency from the light emitting device.