Patent ID: 6456434
Filing Date: 2002-09-24
Classification: G02B,Y10S

Abstract:
A single crystal two-beam polarizing prism without angular dispersion for polarization of a non-polarized incident beam entering said prism and dividing said non-polarized incident beam into two orthogonally polarized beans separated in air at a given angle &Dgr;, said prism comprising:at least five base planes with two pairs of base planes mutually parallel within each pair, said at least five base planes comprising a first base plane; a second base plane; a third base plane; a fourth base; and a fifth base plane, said first base plane and said fourth base plane being parallel to each other; said second base plane and said third base plane being parallel to each other; when said incident beam entering said prism through said first base plane, said incident beam being divided inside said prism into o-beam and an e-beam so that said o-beam exits said prism through said fifth base plane along a normal to said fifth base plane, and said e-beam exits said prism through said fourth base plane along a normal to said fourth base plane, said e-beam being reflected inside said prism with even number of total internal reflections.