Patent ID: 8969112
Filing Date: 2015-03-03
Classification: G02B,H01L,Y02E

Abstract:
1. A method of forming a light directing arrangement for a light emitting device comprising a body having a surface and a region of a semiconductor material and a light emitting source on one side of the surface, the method comprising forming adjacent an opposite side of the surface the light directing arrangement defining a passage for light, the light directing arrangement being formed by depositing on the surface alternate layers of a light reflecting material and layers of an insulting material, forming a light reflecting sidewall having a circular transverse cross section defining the passage having a main axis, by utilizing exposed edges of the layers of a light reflecting material and cladding adjacent edges of the layers of an insulating material with regions of a light reflecting material and causing a distance from the main axis to the exposed edge of any one of the layers of a light reflecting material to be not less than a distance from the main axis to the region cladding the adjacent edge of the layer of an insulating material immediately adjacent said one layer of a light reflecting material in a direction towards the surface.