Patent ID: 9019490
Filing Date: 2015-04-28
Classification: G01N,H04L,H04N

Abstract:
1. An inspection apparatus comprising: an optical system configured to illuminate light to a standard sample having plural artificial defects disposed at known positions; a detector configured to detect scattered light from the standard sample; a determination unit configured to detect the artificial defects based on a signal from the detector; and a data processing unit configured to compare a coordinate position of the artificial defects outputted from the determination unit and the known positions, and to correct a coordinate deviation based on a result of the comparison; wherein the data processing unit is configured to divide the whole standard sample into plural regions, and wherein the data processing unit is configured to perform fine adjustments to correct the coordinate deviation for each of the regions, obtained by the division of the whole standard sample based on the result of the comparison for each of the plural artificial defects.