Patent ID: 6719429
Filing Date: 2004-04-13
Classification: G02B,G03B,H04N

Abstract:
In a multimedia projector in which a micro-electromechanical display device (â€œMDDâ€ ) includes an array of micromirrors that each pivot on a hinge axis to effect pixel on- and off-states whereby the MDD provides a projected image by receiving an incident illumination bundle and for pixels in the on-state reflects a reflected image bundle through a projection lens, an apparatus for increasing a brightness of the projected image comprising:an illumination source propagating light rays along an optical axis; an anamorphic optical device receiving the light rays and forming an anamorphic incident illumination bundle that illuminates the MDD at a first f/number perpendicular to a first of the hinge axes and at a substantially faster second f/number parallel to the first hinge axis.