LIGHT EMITTING DEVICE

摘要

According to one embodiment, a light emitting device includes a light emitting unit, a first wavelength selection layer, and a wavelength conversion layer. The light emitting unit emits a first light having a first peak wavelength. The first wavelength selection layer is transmissive to the first light. The first wavelength selection layer has a first reflectance with respect to the first peak wavelength. The wavelength conversion layer absorbs at least a portion of the first light passed through the first wavelength selection layer. The wavelength conversion layer emits a second light having a second peak wavelength longer than the first peak wavelength. The first wavelength selection layer has a second reflectance with respect to the second peak wavelength. The second reflectance is higher than the first reflectance.

主权项

1. A light emitting device, comprising:
a light emitting unit to emit a first light having a first peak wavelength;
a first wavelength selection layer being transmissive to the first light and having a first reflectance with respect to the first peak wavelength; and a wavelength conversion layer absorbing at least a portion of the first light passed through the first wavelength selection layer, the wavelength conversion layer emitting a second light having a second peak wavelength longer than the first peak wavelength, the first wavelength selection layer having a second reflectance with respect to the second peak wavelength, the second reflectance being higher than the first reflectance.