Patent ID: 8860891

Claim:
A video projector for projecting the image of a received video signal, the projector comprising: an illumination source; a projection lens adapted to receive and project light generated by said illumination source; at least one imaging device configured to modulate incident light in response to a received video signal wherein the video signal comprises one or more individual frames; a light engine providing a light path extending from the illumination source to and through the projection lens, the light path being incident on at least a portion of the imaging device whereby at least a portion of the light in the light path is modulated in accordance with the received video signal; a luminance control mechanism at least partially disposed in the light path and adapted to at least partially control the transmission of light through the light path in response to an applied luminance control signal; and an adaptive luminance control module configured to generate and output, in response to the luminance level of at least one individual frame within the received video signal, a luminance control signal for application to the luminance control mechanism to control the effective contrast of the projected image.