Patent ID: 7718985
Filing Date: 2010-05-18
Classification: H05G

Abstract:
1. A method for tracking and correcting positions of droplet targets and resulting plasma generated, comprising the steps of: generating the droplet target and plasma; activating at least two light sources to image the generated target; strobing the at least two light sources to provide back illumination of the droplet target; optically imaging the generated droplet target from at least three different angles to produce stroboscopic optical images; collecting the produced stroboscopic optical images; determining position coordinates of the generated target from the stroboscopic optical images using image processing; comparing the determined position coordinates relative to a set of predefined position of the generated target to determine if a spatial deviation has occurred; and moving the generated target back to the set position if a spatial deviation has occurred as an advanced droplet and plasma targeting system with active feedback stabilization of the target.