A METHOD FOR EXAMINNING A FOREIGN SUBSTANCE ON A TRANSPARENT FILM

摘要

The invention transparency film by removing foreign matters attached to the transparent film surface and detecting the number of foreign matter to provide a high accuracy to be in the transparency of the film particle inspection method is determined as good or bad for the purpose of quickly . ; to move the transparent film between two polarizers arranged perpendicular between the light source and the camera Nicolo , and by photographing the light coming from the light source passes through a camera subjected to the removal process of the foreign matter attached to the transparent film from the surface as a method to check the transparency of the film by the foreign matter that the image processing , signal intensity of the shape of the particle and foreign matter , detection is characterized in that for determining the acceptability of a transparency film the number of foreign matter .