Patent ID: 7452085

Claim:
A proiection device comprising: a light source configured to provide light; a controller configured to generate a first control signal to receive an image signal and to output a second control signal based at least in part on the image signal; a fold-mirror assembly coupled to the controller and positioned to receive light from the light source, the fold-mirror assembly having a mirror element configured to be in a first angular disposition relative to the light source and to transition to a second angular disposition relative to the light source based at least in part on the first control signal; an aperture mask having one or more apertures configured to transmit a first amount of light while the mirror element is in the first angular disposition and to transmit a second amount of light while the mirror element is in the second angular disposition, the second amount being less than the first amount; and a light modulator coupled to the controller and optically coupled to the fold-mirror assembly and configured to receive light from the fold-mirror assembly and to modulate the light based at least in part on the second control signal.