Patent ID: 8801234
Filing Date: 2014-08-12
Classification: F21S,F21V,F21Y,H01L

Abstract:
1. A light emitting module comprising: a light emitting element; and an optical wavelength converting member, wherein the optical wavelength converting member includes a light incident plane facing the light emitting element, a light output plane, and an outer plane which is a plane except for said light incident plane and said light output plane, wherein the optical wavelength converting member is adapted to convert a wavelength of light emitted from the light emitting element and entered from the light incident plane into the optical wavelength converting member and to output the wavelength-converted light from the light output plane, wherein an average roughness “Ra” of the light output plane is larger than 0.3 micrometers, wherein an average roughness “Ra” of at least a portion of the outer plane is lower than an average roughness of the light output plane, wherein said average roughness “Ra” of said portion of the outer plane is smaller than, or equal to 0.3 micrometers, and larger than or equal to 0.020 micrometers, and wherein a photon ratio between the light output plane and the outer plane exceeds 0.5.