Patent ID: 8149376
Filing Date: 2012-04-03
Classification: G01N

Abstract:
1. A test data processing apparatus for processing test data obtained by testing defects of a sheet-shaped product having at least an optical film which is a member of an optical displaying apparatus, comprising: an image capturing section for capturing image data of a long sheet-shaped product while the long sheet-shaped product is fed; an image data processing section for analyzing the image data captured by the image capturing section and determining the defects; a defect information preparing section for preparing a defect information based on information of the detects determined by the image data processing section; wherein the defect information preparing section prepares the defect information in such a way that on the basis of surface defect test data relating to a surface defect and bright point test data relating to a bright point obtained when the optical film or a laminate body containing the optical film is regarded as an object of testing, wherein the surface defect test data is obtained based on a reflected light image of a surface of the object of testing, wherein the bright point test data is obtained based on a transmitted light image which pass through the object of testing and a polarization filter for testing which is disposed in crossed nicol with the polarization axis of the object of testing, and wherein, in a case that a position of the surface defect and a position of the bright point are identical, the surface defect and the bright point located at the identical position are not regarded as a defect for processing by the defect information preparing section; wherein the image capturing section comprising: first image capturing section for capturing transmitted light image without a polarization filter for a testing and reflected light image of the long sheet-shaped product; and third image capturing section for capturing transmitted light image with a polarization filter for a testing, the polarization filter is disposed between a light source and the second image capturing section and the polarization axis of a polarization filter is disposed to form in crossed nicol with the polarization axis of the long sheet-shaped product.