LUMINANCE ADJUSTING APPARATUS

摘要

A brightness adjusting device is provided including a pattern image shooting part 2 for displaying a pattern image for brightness measurement on each of a plurality of display units to shoot a pattern image which is a display image displayed on the plurality of display units, a display unit position determining part 3 for determining the position of each display unit in a coordinate system on the pattern image shot by the pattern image shooting part 2, a shooting angle determining part 4 for determining a shooting angle of the pattern image shooting part 2 with respect to each display unit from the pattern image shot by the pattern image shooting part 2, and a brightness measuring part 5 for determining the display image displayed on each display unit in the pattern image shot by the pattern image shooting part 2 with reference to the position of each display unit determined by the display unit position determining part 3 to measure the brightness of each display unit, and adjusts the brightness of an image display device 1 in consideration of the light distribution characteristic value of the image display device 1, the shooting angle measured by the shooting angle determining part 4, and the brightness of each display unit measured by the brightness measuring part 5.