Patent ID: 6160239
Filing Date: 2000-12-12
Classification: B23K,H05K

Abstract:
A laser soldering process for the joining of a pin and a printed circuit board using a high energy process in which light waves are concentrated to obtain a high density laser beam which is applied to a point of union of two metals positioned in the path of the laser beam characterized in that the process comprises transmitting power from a power source to a laser and generating a laser beam, changing the path of the laser beam by interposing a mirror at a point in the laser beam's path such that the deflected beam comes into contact with focusing optics, focusing the laser beam to a point situated over a XYZ movement system, providing on the movement system a circuit board comprising a substrate having a metal thereon in contact with a hole therein containing the pin, and controlling the movement system such that a desired point of union between the pin and the metal at the hole is sufficiently close to the laser beam point of focus to effect welding at said desired point of union, wherein the laser beam travels through an inert atmosphere.