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This lens is designed to fold the optical path through more than 120 degrees in order to minimize the size of the TV cabinetry. It is designed to provide a 50 inch diagonal image on the screen with a 27.5 inch projection distance while consuming only 3 inches of height below the screen. This F/2.8 lens exhibits less than 0.2% distortion, less than 6 microns of lateral color, nearly 80% illumination at the corners of the screen, 80% polychromatic MTF on axis at 45 cpmm, and better than 50% MTF (average S&T) over the field. Common Schott glasses and plastic aspheres serve to keep the cost of this lens low in high volume.
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