PROJECTION SYSTEM UTILIZING ASYMMETRIC ETENDUE

摘要

A projection system includes a light source, a deformable micromirror device (DMD) having a plurality of mechanical mirrors (7) which pivot about respective tilt axes (9), and an anamorphic optical system disposed in between the light source and the DMD along an optical path, the anamorphic optical system (15) providing a higher magnification along a first axis and a lower magnification along a second axis (17) orthogonal to the first axis, wherein the first axis is aligned perpendicular to the tilt axes of the mirrors. The light source may have a pre-distorted shape which corresponds to the shape of the DMD as imaged through the anamorphic optical system. For example, the light source has the shape of a parallelogram.