LASER TRIANGULATION METHOD FOR MEASUREMENT OF HIGHLY REFLECTIVE SOLDER BALLS

摘要

A system (10) and method of determining a height and/or position of at leastone element (20) on an area array device. A laser beam (30, 40) scans the areaarray device using at least two different laser light intensities. Reflectedlight (3OA, 40A) is sampled, and the height and/or position of the element(20) is determined using, e.g., optical triangulation.