Patent ID: 6758565
Filing Date: 2004-07-06
Classification: G02B,H04N

Abstract:
A projection apparatus for projecting a multicolor image toward 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 and for directing said magnified uniform illumination field toward a dichroic separator, said dichroic separator providing colored light for a first, second, and third colored light modulation channel; (d) wherein each colored light modulation channel is similarly constructed and comprises: (i) a reducing relay lens for imaging said magnified uniform illumination field and directing said colored light in said colored light modulation channel; (ii) a spatial light modulator for forming a first image thereon; and (iii) a magnifying relay lens for focusing and relaying a magnified real image of said first image towards a dichroic combiner; (e) said dichroic combiner forming a multicolor image by combining said magnified real image from said first colored light modulation channel, said magnified real image from said second colored light modulation channel, and said magnified real image from said third colored light modulation channel; and (f) a projection lens for projecting said multicolor image toward said display surface.