Patent ID: 7953567
Filing Date: 2011-05-31
Classification: G01N,G06K,G06T

Abstract:
1. A defect inspection apparatus comprising: a moving system including a stage which moves an inspecting object, the inspecting object including a circuit pattern; an illumination optical system which illuminates a first slit light to a first area of the inspecting object, and illuminates a second slit light to a second area of the inspecting object, the second area being different from the first area; a detection optical system which detects a first reflected light from the inspecting object generated by the first slit light and outputs a first detection signal based on the first reflected light, and which detects a second reflected light from the inspecting object generated by the second slit light and outputs a second detection signal based on the second reflected light; and a first processing system that generates a signal indicating a defect based on at least one of the first detection signal or the second detection signal from the detection optical system.