A complex polarizer system (“cross-polarizer”) including an arrangement of at least three polarizing beam splitting layers P1,P2,P3. P1 and P2 are arranged such that a beam transmitted by P1 is reflected by P2 without further polarization rotating components; P3 is arranged such that a beam reflected...http://www.google.fr/patents/US7929208?utm_source=gb-gplus-shareBrevet US7929208 - Complex polarizer system for reciprocal polarization (cross-polarizer)
Complex polarizer system for reciprocal polarization (cross-polarizer)
