White LED light sources – quality and colorimetric characteristics

Optical radiation in the visible range, primarily white light with correlated colour temperature ranging from 3000 to 6500 K, can be emitted by electroluminescence diodes available in different technologies. For this reasons LED modules, integrated LED lamps and LED luminaries differ with respect to the quantity and quality of emitted radiation. Reliable measurements and comparisons [...]

Using integrating spheres correctly to measure LEDs

LEDs have opened up new dimensions of design freedom, allowing architects and designers to give free rein to their creativity. Light-emitting diodes permit manifold design solutions as a light source in illumination products. However, a suitable measuring method for comparing key technical data is required in order to get the best out of the diversity [...]

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