Patent ID: 6681038
Filing Date: 2004-01-20
Classification: G01R,G06T,H04N

Abstract:
A method for visually inspecting electronic assemblies of a variety of components, which comprises:positioning one of said assemblies comprising a printed circuit board mounting a plurality of surface-mounted components of different types, colors, orientations and terminal lead spacings, within the view of a color digitizing camera of at least four million pixel resolution; obtaining via said camera, an image of the entire surface of said assembly; scanning said image to obtain a record of observed features including color, type, location and orientation of a variety of surface-mounted components, and terminal lead spacing data; maintaining a data base of a plurality of visually perceptible parameters of said features including colors; numerically analyzing each of said observed features under a plurality of said visually perceptible parameters to locate defects therein; and generating a graphical display indicating defects including component placement, lead spacing and orientation defects.