A radiation beam emitted by a polychromatic source with finite dimension is initially corrected in its vergence and distribution by a reflector or a system which operates according to refraction, diffraction, total inner reflection, effects and is incident on a matrix of micro-lenses with a ...http://www.google.de/patents/US5839807?utm_source=gb-gplus-sharePatent US5839807 - Device with micro-filters for selecting colors and images
