Patent ID: 7905602

Claim:
A polarization conversion system comprising: a polarization beam splitter (PBS) operable to receive randomly-polarized light bundles from a projector lens, and direct first light bundles having a first state of polarization (SOP) along a first light path, and direct second light bundles having a second SOP along a second light path; a polarization rotator located on the second light path, the polarization rotator being operable to translate the second SOP to the first SOP; a polarization switch operable to receive first and second light bundles from the first and second light paths respectively, and to selectively translate the polarization states of the first and second light bundles to one of a first output SOP and a second output SOP, wherein the polarization switch comprises first and second polarization switch panels, the first polarization switch panel receiving light from the first light path, and the second polarization switch panel receiving light from the second light path; and a telephoto lens pair located on the first light path.