Patent ID: 8754840

Claim:
An image display apparatus comprising: a light source; a spatial light modulation element modulating light from the light source based on a video signal; light quantity adjustment means for adjusting the light quantity of light from the light source based on luminance information in the video signal; image correction means for correcting luminance level of the video signal in accordance with light quantity adjustment by the light quantity adjustment means, and supplying a corrected video signal to the spatial light modulation element; and re-adjustment means for performing re-adjustment such that a light quantity adjustment target is re-adjusted to a lower value, in a case that a final display luminance level, representing a luminance of the light modulated by the spatial modulation element, is lower than a predetermined first luminance level, where the light quantity adjustment target represents an adjustment target value in the light quantity, employed by the light quantity adjustment means, in which the light quantity adjustment means asymptotically adjusts, on a frame by frame basis, the light quantity of the light from the light source based on the light quantity adjustment target re-adjusted by the re-adjustment means such that (i) adjusted light quantity for a first frame is asymptotic towards a first adjusted light quantity value, (ii) adjusted light quantity for a second frame is asymptotic towards a second adjusted light quantity value, and (iii) adjusted light quantity for a third frame is asymptotic towards a third adjusted light quantity value, in which the first adjusted light quantity value is different from the second adjusted light quantity value, and the third adjusted light quantity value is between the first adjusted light quantity value and the second adjusted light quantity value, and in which the second frame is immediately adjacent to the first frame such that the second frame occurs immediately after the first frame, and the third frame is immediately adjacent to the second frame such that the third frame occurs immediately after the second frame.