A polarization luminaire is disclosed having a light source, a system of the optical integrator, a polarized light splitting device for splitting a light emitted from the light source into two kinds of polarized lights whose polarization directions are perpendicular to each other and whose traveling...http://www.google.fr/patents/US6667834?utm_source=gb-gplus-shareBrevet US6667834 - Polarization luminaire and projection display
