Patent ID: 8075140

Claim:
A light engine that provides a polarized light engine image, comprising: a light source that has a front surface comprising a first region and a second region; a collection lens that collects the non-collimated light from the front surface and that provides incompletely collimated light from the front surface; a collimating lens that receives the incompletely collimated light and that provides a substantially collimated image of the front surface; a polarizing filter that receives the collimated image of the front surface, the polarizing filter passing a polarized portion of the collimated image as a direct component of the polarized light engine image, and the polarizing filter reflecting a recycled image back to the front surface, the front surface providing the recycled image as a recycled component of the polarized light engine image; and the polarizing filter comprising a non-orthogonal shape that shifts portions of the recycled component relative to the direct component, to increase brightness uniformity of the polarized light engine image.