Spectral design of new dynamic LED light sources

The use of LED technology in lighting applications, termed Solid State Lighting, is increasing drastically these years due to increasing flux and efficiency of LED components. The advantages of using Solid State Lighting is not only energy savings but the possibility to create new dynamic light sources that can be varied in color temperature and achieving color rendering properties.

New LED light sources are constructed as clusters of colored LEDs. Modeling and optimization of the control of the light from the individual LEDs is a necessity for the desired operation of the new dynamic light source. Detailed knowledge of the spectral power distribution as a function of operating current and temperature is required for the modeling and optimization.

Examples of new high color quality dynamic white light sources that can be tuned from warm white light at 2700 K to cold white light at 6500 K are presented.