A high brightness and high contrast image projection system particularly suitable for use with light valves that have an array of pivotable mirror pixels (22) is disclosed. By disposing an asymmetric aperture (92) in the light path with its longitudinal axis located along the pivot axis (24-24) of the pixels (22) maximum brightness is obtained without adversely affecting contrast. The system may be used in either a monochrome or color (RGB) system and in single or multiple light valve systems.
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