Delft Spectral Technologies is a high tech spin-off company of Delft University of Technology. We specialize in the design, construction and sale of high-end photosensitive device characterization equipment. Our product is able to produce a custom-tuned spectrum in the UV, VIS and NIR regions and combines two measurement techniques in one device. Our product is specifically targeted at measuring photovoltaic devices (solar cells), but it can be used for any application where the electrical or optical response of a material to any light source is needed.