A lens system for use in a two-stage projection system that relays light
output from a first imager on a pixel-by-pixel basis onto a second imager
(e.g. an LCOS). The lens system includes a double gauss lens set having a
distortion of less than about 0.015% with at least about 90% of the light
energy of a specific pixel projected within about a 15.4 micrometer
square. Thus a projection system that enhances the contrast ratio for
video images, particularly in the dark state, and reduces contouring
artifacts, can be achieved.