| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a light guide plate, by which a light guide plate having a desired chromaticity uniformity ratio can be efficiently manufactured.SOLUTION: The method for manufacturing a light guide plate includes: a prototype molding step S1 of molding a plurality of prototypes of a light guide plate by transferring a shape of a transfer mold 69 onto resin sheets which comprise a styrene resin or a polycarbonate resin and are subjected to different bluing agent treatments by controlling add amounts of a bluing agent; an evaluation step S2 of evaluating a chromaticity uniformity ratio of each of the plurality of prototypes of a light guide plate; a determination step S3 of determining an add amount of the bluing agent to obtain a light guide plate 30 that exits light with a desired chromaticity uniformity ratio, on the basis of the evaluated chromaticity uniformity ratios; and a light guide plate molding step S4 of molding the light guide plate 30 on the basis of the determined add amount of the bluing agent. |
