| 摘要 |
An illumination polarization conversion system is provided in which unpolarized light from a source (e.g., a lamp (10) and a light integrator (16)) is separated by a polarization converting relay (13) into first and second parts (e.g., S-polarized and P-polarized light) and the polarization of one of the parts is converted to the polarization of the other part (e.g., the S-polarized light is converted to P-polarized light). The converted and non-converted parts are then used to illuminate an object, such as, a polarization converting pixelized panel (12). The polarization converting relay (13) preferably has a telecentric or near telecentric exit pupil formed by placing a hard aperture stop substantially in the back focal plane of a lens unit (L3) located at the light exiting end of the relay (13).
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