Patent ID: 6863400
Filing Date: 2005-03-08
Classification: G02B,G03B,H04N

Abstract:
1. A projection apparatus for forming a tiled image on a display surface, said tiled image comprising at least a first, second, third, and fourth image tile segments the projection apparatus comprising: (a) an illumination system providing a first illumination beam having a first polarization state and a second illumination beam having a second polarization state, said first and second illumination beams being spatially separated; (b) a first spatial light modulator for forming a first modulated light beam from said first illumination beam; (c) a second spatial light modulator for forming a second modulated light beam from said second illumination beam; (d) a first beam aligner for directing said first and second modulated light beams along adjacent parallel paths, the first and second modulated light beams being substantially non-overlapping and parallel to an optical axis of a projection lens; (e) said illumination system providing a third illumination beam having a first polarization state and a fourth illumination beam having a second polarization state said third and fourth illumination beams being spatially separated; (f) a third spatial light modulator for forming a third modulated light beam from said third illumination beam; (g) a fourth spatial light modulator for forming a fourth modulated light beam from said fourth illumination beam; (h) a second beam aligner for directing said third and fourth modulated light beams along adjacent parallel paths, the third and fourth modulated light beams being substantially non-overlapping; (i) a beamsplitter which redirects said third and fourth modulated light beams parallel to said optical axis of said projection lens and transmits said first and second modulated light beams; and said projection lens directing said first, second, third, and fourth modulated beams to said display surface to form the first, second, third, and fourth tile segments.