Patent ID: 8727536

Claim:
A polarization conversion system for transmitting polarization encoded images to a projection screen, comprising: a first projection lens; a second projection lens; a polarization beam splitter operable to transmit light of a first polarization state toward the first projection lens on a first light path, and operable to reflect light of a second polarization state toward a second light path; a reflecting element located on the second light path operable to reflect light toward the second projection lens; and a polarization modulator located in the first and second light paths and operable to rotate the polarization of light passing therethrough to provide first and second output polarization states; wherein the first and second projection lenses are operable to direct the polarization encoded images toward the projection screen; wherein the polarization conversion system is positioned between an image source and the projection screen; and wherein the polarization modulator comprises a liquid crystal based modulator.