System for variable spectra solar light source

We present a variable spectral and angular light source generator. The design and presented results are focused on solar radiation simulation, reproducing the spectral and angular distribution observed from the sun. This system is particularly interesting in the area of solar concentration. It permits to measure and test multi-junction photovoltaic cells alone or together with concentrating optics. We present some system setups and its performance in reproducing solar radiation around the visible band.