Patent ID: 7794092

Claim:
A projection system comprising a light source capable of generating a polychromatic source illumination beam, wherein it comprises a group of at least one imaging assembly, each of said imaging assemblies of said group being illuminated by an associated polychromatic illumination beam, and comprising: two separate colored wheels, respectively called first and second colored wheels; and three separate imagers, respectively called first, second and third imagers; at least one part of the polychromatic beam, called first source beam, illuminating said first colored wheel which separates said source beam into a first monochromatic beam and into a two-tone beam, said first monochromatic beam illuminating the first imager and said two-tone beam being transmitted toward said second colored wheel; and said second colored wheel being illuminated by said two-tone beam and separating said two-tone beam into second and third monochromatic beams, respectively illuminating said second and third imagers, wherein said imaging assembly comprises focusing means in each of the paths of said first, second and third monochromatic beams, said focusing means each comprising a group of at least one lens and one light guide, each of the groups of at least one lens respectively focusing the first, second and third monochromatic beams onto the entry of the corresponding light guide, the exit of each of the light guides being respectively associated with the first, second and third imagers.