Patent ID: 7929193

Claim:
A display device of producing a color image using four or more primary colors, the device comprising: a first color selective rotator to selectively rotate the polarization of polychromatic light, and provide a first light beam including light of first and second spectral ranges in a first polarization state, and light of third and fourth spectral ranges in a second polarization state, said first, second, third and fourth spectral ranges corresponding to first, second third and fourth primary colors, respectively; a beam splitter to split said first light beam into a second light beam including light of said first and second spectral ranges in said first polarization state, and a third light beam including light of said third and fourth spectral ranges in said second polarization state; a second color selective rotator to selectively rotate the polarization of said second light beam to include light of said first spectral range in said second polarization state, and light of said second spectral range in said first polarization state; first and second reflective spatial light modulator panels including first and second arrays of pixel elements, respectively; a first beam divider/combiner to direct the light of said first spectral range in said second polarization state towards said first reflective panel, and the light of said second spectral range in said first polarization state towards said second reflective panel; a third color selective rotator to selectively rotate the polarization of said third light beam to include light of said third spectral range in said first polarization state, and light of said fourth spectral range in said second polarization state; third and fourth reflective spatial light modulator panels including third and fourth arrays of pixel elements, respectively; and a second beam divider/combiner to direct the light of said third spectral range in said first polarization state towards said third reflective panel, and the light of said fourth spectral range in said second polarization state towards said fourth reflective panel.