LIGHT GUIDE PLATE, SURFACE LIGHT SOURCE DEVICE, TRANSMISSIVE IMAGE DISPLAY DEVICE, METHOD FOR DESIGNING LIGHT DISTRIBUTION PATTERN FOR LIGHT GUIDE PLATE, AND METHOD FOR PRODUCING LIGHT GUIDE PLATE

摘要

PROBLEM TO BE SOLVED: To provide a light guide plate capable of relieving the linear luminance nonuniformity at the joints of ink-jet heads and also reducing appearance of contour-like lines caused by patterns of light reflective dots.SOLUTION: According to one embodiment of the present invention, the light guide plate 1 is formed in such a way that light reflective dots 12 are formed on at least one surface S2 of a light guide substrate 11. A plurality of light reflective dots 12 are formed on grid points for printing targets, the grid points being regularly arrayed in a two-dimensional pattern, in each of individual regions obtained by dividing the at least one surface S2 of the light guide substrate 11 into the plurality of regions. Some light reflective dots selected irregularly from the plural light reflective dots 12a are replaced in each of the individual regions by replacement light reflective dots 12b sized differently from the plural light reflective dots 12a.