Patent ID: 7401927
Filing Date: 2008-07-22
Classification: G02B,H04N

Abstract:
1. A display apparatus comprising: a light source, emitting light; a light valve, having a screen formed of a plurality of pixels; a light cross-section converter, receiving the light from said light source and converting the received light into illumination light having a cross section enough to illuminate at least one of the plurality of pixels at a time; and a light scanning mechanism, controlling a direction of travel of the illumination light in such a way that the illumination light scans the plurality of pixels; wherein said light scanning mechanism includes a light scanning mechanism controller that controls at least one of a sequence, a speed, and a number of times of scanning where the illumination light scans the plurality of pixels, in such a way that a desired profile of distribution of illuminance is obtained over an entire surface of the screen for a time period not longer than one frame time of an image, and wherein said light scanning mechanism controller controls the desired profile of distribution of illuminance in accordance with a type of input signal or an application of the display apparatus.