Patent ID: 6809873
Filing Date: 2004-10-26
Classification: G02B,H04N

Abstract:
A projection apparatus for projecting a color image onto a display surface, the apparatus comprising:(a) a polychromatic light source; (b) uniformizing means for homogenizing light from said polychromatic light source to provide a uniform illumination field; (c) a base condenser relay lens for magnifying said uniform illumination field to form a magnified uniform illumination field; (d) color splitting means for splitting said magnified uniform illumination field into a first color channel for forming a magnified first color illumination field and into at least a second single-color channel for forming a magnified second color illumination field; (e) a first reducing relay lens for forming a reduced first color illumination field from said magnified first color illumination field and for directing said reduced first color illumination field towards a first spatial light modulator for forming a first modulated light beam; (f) color combining means for directing said first modulated light beam toward a projection lens for projection toward the display and (g) a second reducing relay lens for forming a reduced second color illumination field from said magnified second color illumination field and for directing said reduced second color illumination field towards a second spatial light modulator for forming a second modulated light beam, said second modulated light beam directed to said color combining means.