For this customer, the software is combined with Imaging Technology's IC-RGB frame grabber, although the open nature of the system allows virtually any frame grabber to be used. Images can be captured from normal area-scan video cameras, digital cameras or linescan cameras. Since the system runs on a PCI-bus equipped PC, it is also affordable and easy to upgrade over time. When the customer asked Integral Vision to develop this system, they wanted a vision system that would work with a variety of displays. As a result, LCI-Pro can be used with LCD displays and both dot matrix and seven segment LED displays.
Segments can also be too bright or too dark.
Dot matrix LED displays are more difficult to inspect because they are small and the placement of the individual LED chips can vary from part to part. These displays switch on in groups to form characters or patterns and failures occur when they do not work or when a short circuit causes two or more LEDs to illuminate at once. LCD displays can suffer from missing or additional pixels just like LEDs. In addition, if the manufacturing process contaminates the display, it can contain pinholes or distortions in the shape of individual pixels. The illumination can also be too low resulting in a display that can't be read properly in low-light conditions.