A general lighting luminaire with high power led diodes

摘要

LED diodes are light sources with cosine luminous flux distribution. Providing that they are applied directly in general lighting luminaires, the resulting luminous intensity distribution solid is inappropriate for the uniform lighting of a target surface and produces too high luminance for this luminaire for large elevation angles. Specially manufactured reflectors with limited height were applied in the designed luminaire model. Thanks to that approach, a reduced luminous flux distribution was achieved along with more appropriate luminous intensity curve, with simultaneous high efficiency reaching 92%. Application of 30 separate white and 5 red diodes in the same luminaire provided the resulting optical radiation with the colour temperature of 3702K and colour rendering index of 81.