Polarization recovery system using redirection

Illumination – With polarizer

Reexamination Certificate

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Details

C362S293000, C362S298000, C362S583000, C359S490020, C359S490020

Reexamination Certificate

active

06969177

ABSTRACT:
A polarization recovery system includes a polarizing beam splitter transmitting light of a useful polarization in an output direction and reflecting light of a non-useful polarization in a first orthogonal direction substantially orthogonal to the output direction. An initial reflector may reflect the non-useful polarization light in a second orthogonal direction substantially orthogonal to the output direction and the first orthogonal direction, and a final reflector may reflect the non-useful polarization light in the output direction. The non-useful polarization light may be rotated substantially to light of the useful polarization by the initial and final reflectors.

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Imai, Masao and Kubota, Eiichi, “Polarization Converting Element”, Published Aug. 16, 1988, Japanese Patent Office Patent Journal, English translation of document JP 63197913 A, pp. 1-8.

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