OPTICAL FILM DEFECT DETECTING SYSTEM AND OPTICAL FILM DEFECT DETECTING METHOD

摘要

The present invention relates to an optical film defect detecting system and detecting method and, more particularly, to a system and a method for detecting a defect of an optical film by acquiring an image, which is projected on a screen, of the optical film defect. As one embodiment of the present invention, an optical film defect detecting system can be provided. The optical film defect detecting system can comprise: a lighting unit, which is disposed so as to be spaced apart from an optical film and emits light toward one surface of the optical film; a screen disposed so as to be spaced apart from the other surface of the optical film and on which the defect present in the optical film is projected when the light emitted by the lighting unit passes through the optical film; a photographing unit disposed to be spaced apart from the screen and acquiring an image, which is projected on the screen, of the optical film defect; and an analysis unit for analyzing the acquired image, and detecting the optical film defect on the basis of the analysis result.