Illumination – With polarizer
Reexamination Certificate
2005-05-31
2005-05-31
Sember, Thomas M. (Department: 2875)
Illumination
With polarizer
C362S292000, C362S559000, C349S009000, C349S062000, C359S487030, C359S490020
Reexamination Certificate
active
06899440
ABSTRACT:
A polarized light source for a display system includes an optical system to image light from a light source onto a display along a first optical path, a reflective polarizer to receive the light from the optical system along a first optical path, direct light of a first polarization of the display, and reflect light of a second polarization along a second optical path separate from the first optical path toward the optical system, a mirror in the second optical path to receive light having the second polarization from the reflective polarizer, and reflect it back to the reflective polarizer, and a polarization conversion system in the second optical path between the reflective polarizer and the mirror to convert the polarization of the reflected light of the second polarization to the first polarization.
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Duelli et al., “Polarization Recovery System based on Light Pipes”, 8 pps.
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InFocus Corporation
Negron Ismael
Schwabe Williamson & Wyatt P.C.
Sember Thomas M.
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