Using special visibility materials proximate candidate component locations to enhance recognition

摘要

The invention in one implementation encompasses the use of special visibility material to enhance the ability of computer-aided visual inspection machines to detect errors in placement or orientation of components mounted to a printed circuit board. In another implementation, the visibility of labels to a repair technician is enhanced by using indicia formed using special visibility material disposed in a housing which substantially restricts the penetration outside ambient light into the interior of the housing.