Patent ID: 6969177

Claim:
The polarization recovery apparatus comprising: a polarizing beam splitter transmitting a light of a useful polarization in an output direction and reflecting a light of a non-useful polarization in a first orthogonal direction substantially orthogonal to said output direction; an initial reflector disposed reflectably to said orthogonal direction, said initial reflector reflecting said non-useful polarization light in a second orthogonal direction substantially orthogonal to said output direction and said first orthogonal direction; a final reflector disposed reflectably to said second orthogonal direction, said final reflector reflecting said non-useful polarization light in said output direction; a first output reflector disposed reflectably to said output direction, said first output reflector reflecting said useful polarization light in said second orthogonal direction; and a second output reflector disposed reflectably to said second orthogonal direction, said second output reflector reflecting said useful polarization light in said output direction; and wherein said non-useful polarization light is rotated substantially to light of said useful polarization by said initial and final reflectors.