Patent ID: 8419251
Filing Date: 2013-04-16
Classification: F21K,F21V,F21Y,G02B,H01L

Abstract:
1. A light emitting device comprising: a light emitting element; a substrate including a light-guiding groove which guides light and extends along a first direction, emission light emitted from the light emitting element and introduced into the light-guiding groove being reflected by an inner wall surface of the light-guiding groove, spreading along the first direction, and being turned into upward light directed upward above the substrate; a lens provided above the light-guiding groove and configured to collect the upward light and control light distribution characteristic in a plane generally perpendicular to the first direction; a transparent substrate provided between the substrate and the lens and having a groove opposed to the light-guiding groove; a phosphor-mixed layer provided between the substrate and the lens and capable of absorbing the emission light and emitting wavelength-converted light, the phosphor-mixed layer being provided in the groove of the transparent substrate; the lens further collecting the wavelength-converted light and controlling light distribution characteristic of mixed light of the upward light and the wavelength-converted light in the plane generally perpendicular to the first direction.