Patent ID: 6750899
Filing Date: 2004-06-15
Classification: G01B,G01N,G06T,H04N

Abstract:
An inspection system for inspecting an article of manufacture such as a printed circuit board, the system comprising:a strobed illuminator adapted to project light through a reticle so as to project a pattern of light onto an area of the printed circuit board; a board transport responsively positioning the board to at least two distinct positions, each position corresponding to a different phase of the projected light; a detector adapted to acquire at least two images of the area, each image corresponding to one of the at least two different phases; an encoder outputting a position output; and a processor coupled to the encoder, the board transport, the illuminator and the detector, the processor adapted to controlledly energize the illuminator to expose the area as a function of the position output, the processor co-siting the at least two images and to construct a height map image with the co-sited images.