Patent ID: 8157384
Filing Date: 2012-04-17
Classification: G03B,G03H,H04N

Abstract:
1. An image display device comprising: a light source; a diffractive optical element adapted to diffract a light beam emitted from the light source; and a light modulation element adapted to modulate a diffracted light beam obtained by the diffractive optical element, wherein a diffraction characteristic of the diffractive optical element is controlled based on a diffractive optical element control signal provided to the image display device, the diffractive optical element control signal is based on a diffraction pattern calculated to correspond to an ideal illumination distribution of light beams emitted to the light modulation element based on an input image signal that changes with time, the ideal illumination distribution includes an ideal illumination of each of a plurality of pixels of the input image signal, and the ideal illumination of each pixel is based on a ratio of a color component having maximum luminance for the pixel to an average of color components having maximum luminance for each of the plurality of pixels.