Defect inspection method for laminated optical film, defect inspection method for optical film, and method for producing laminated optical film

摘要

The laminated optical film defect inspection method according to the embodiment includes a first inspection step of performing a defect inspection of the optical film 11, and the protective film 12 and the adhesive material 13 are bonded to the optical film 11 to form the laminated optical films 10 / b A and 10 / b B. A first marking step for marking the laminated optical film 10A (of the mark 30) corresponding to the defect 20 detected in the first inspection step, and a second inspection for inspecting the laminated optical film 10B for defects. And a second marking step for marking the laminated optical film 10B (of the mark 31) corresponding to the defect 21 detected in the second inspection step. In the second inspection step, marking is performed in the first marking step. The detected mark 30 is not detected.