Abstract: Coarse alignment between either of the sections and the optical device is effected by using a vision subsystem comprising of two video cameras or a single movable camera and a sideview mirror. Coarse alignment is achieved by aligning corresponding corners of a section and the optical device. Then, given that the dimensions and positioning of the ports and the fibers are known, the optical device is translated along two axes to coarsely align its port with the fibers on the section to be attached. Fine alignment is effected by passing an optical signal through the optical device and adjusting the position/orientation of the optical device to maximize the intensity of light output from the output ports. The optical device is placed on a six axis robot and is adjusted to optimize its alignment with either of the input or the output sections.

Abstract: Apparatus and method for the formation and application of small drops of liquid to a workpiece at a predetermined location thereon. The apparatus includes a machine vision system including a computer operable to view the drop as it is being formed and calculate a value indicative of the drop volume and control formation of the drop using the value. Application of the drop to the workpiece is also monitored and controlled by the machine vision system. The method and apparatus are particularly suited for use in the application of very small drops having actual volumes of less than about 30 nanoliters.