Parameters of white LEDs respecting operational conditions

Tomas Pavelka, Pavel Slama, Petr Dolezal
2015 Proceedings of the 21st International Conference LIGHT SVĚTLO 2015   unpublished
Paper brings knowledge from measurement on white power LEDs for general lighting applications considering operational conditions that affect quantitative and qualitative light parameters of LEDs as well as basic electrical parameters. These data are necessary for correct design of luminaire and even for basic understanding of LED behaviour in real applications, so it can be used for creation of proper model of LED parameters degradation. Measuring of LED parameter changes is based on
more » ... based on spectroradiometry to provide information not only about luminous flux change but also about qualitative parameters changes such as chromaticity temperature and colour rendering index.
doi:10.13164/conf.light.2015.49 fatcat:byujcnpjs5gc5godefy4fn5zly