A machine-vision system that provides quick changing and/or automatic adjustment of illumination angle, dispersion, intensity, and/or color of illumination. One such system includes a light source emitting polarized light, a machine-vision imager, an image processor operative to generate a quality parameter...http://www.google.fr/patents/US7142301?utm_source=gb-gplus-shareBrevet US7142301 - Method and apparatus for adjusting illumination angle
Method and apparatus for adjusting illumination angle
