Patent ID: 7609427

Claim:
An image display apparatus comprising: a light source which includes a plurality of light emitting elements for emitting a plurality of light beams arranged in a direction corresponding to a sub-scanning direction on an image display screen; a light source driver which individually modulates intensities of the plurality of light beams in accordance with input image data; a light scanning unit which performs main scanning and sub-scanning in such a way that light irradiation positions on the image display screen that are irradiated with the plurality of light beams are moved in a main scanning direction on the image display screen during the main scanning and the light irradiation positions are moved in the sub-scanning direction during the sub-scanning; the image display screen which receives the plurality of light beams scanned in the main scanning direction and the sub-scanning direction by the light scanning unit, thereby causing an image to be displayed; and a controller which controls the light scanning unit so as to perform one sub-scanning each time that the plurality of light beams are scanned in the main scanning direction; wherein, in one frame period, a distance of movement of the light irradiation positions on the image display screen moved by one sub-scanning is a distance obtained by multiplying an interval between adjacent two scanning lines in the sub-scanning direction on the image display screen by a predetermined integer which is an integer smaller than number of the plurality of light beams arranged in the direction corresponding to the sub-scanning direction.