An image projection system having a reflective imaging device and a projection device, characterized in that a quarter wave plate is provided between the reflective imaging device and projection lens in such manner as to suppress reflections from the projection lens from reaching the reflective imaging device while minimizing reflections from its own surface reaching the reflective imaging device. Preferably, the quarter wave plate is laminated to a polarizing beamsplitter exit face or to an optional linear polarizer sheet, to eliminate an air interface.