Patent ID: 8675027

Claim:
An image display apparatus comprising: a light source having a plurality of light emitters, each of the plurality of light emitters, whose light-emission period is controlled separately, emitting one color of a plurality of colors; an image signal analyzer for analyzing a plurality of color image data included in an input image, and for determining a timing of light emission for each of the plurality of light emitters; a light source controller for generating light-emission drive signals based on the light emission timings for the respective plurality of light emitters, and for controlling light-emission periods of the light source; an illuminating optical system for generating substantially uniform illumination light from the light emitted from each of the plurality of light emitters of one color of the plurality of colors; an image display unit for modulating, pixel by pixel, the illumination light of the plurality of colors, to form a display image; a light detector for detecting the light emitted from each of the plurality of light emitters of the light source, and for outputting an average light-emission peak value for each of the plurality of light emitters; a reference peak value memory for storing, as reference peak values, reference values of the light-emission peak values for the respective light emitters; and a peak value corrector for generating a correction value such that the average light-emission peak value of each light emitter is equal to the corresponding reference peak value; wherein each of said light emission periods includes a fixed light-emission period of a fixed length regardless of the value of the corresponding color image data; the light source controller generates the light-emission drive signals, each of the light-emission drive signals has a length of the fixed-light emission period when the light emission timing has a length shorter than the fixed light-emission period; and the light detector detects the light emitted during each of the fixed light-emission periods, and outputs the average light-emission peak value which is obtained by determining a time integral of the intensity of light emitted from the corresponding light emitter during the corresponding fixed light-emission period.