Patent ID: 9613576
Date: 2017-04-04
CPC Classifications: G09G

Claim:
1. An image display device, comprising: a light modulation device that includes a plurality of light valves, each of the light valves including a plurality of display pixels, the light modulation device being configured to modulate light based on first image information; a lighting unit that includes a plurality of light adjusting elements, each of the light adjusting elements emitting adjusted light to a respective light valve of the plurality of light valves; an illumination distribution storage unit that stores illumination range information, the illumination range information representing an illumination range when light emitted from the light adjusting elements illuminates the display pixels of the light valves; a light adjusting information determination unit that determines light adjusting information for controlling the light adjusting elements of the lighting unit based on a feature quantity of the first image information corresponding to the display pixels in the illumination range; and a shift information acquisition unit that acquires information of a position shift between the light modulation device and the lighting unit, the position shift being a shift in an arrangement relationship between each light valve of the light modulation device and each respective light adjusting element of the lighting unit, wherein the light adjusting information determination unit modifies the illumination range based on the position shift information acquired by the shift information acquisition unit, and determines the light adjusting information based on a feature quantity of the first image information corresponding to display pixels in the modified illumination range.