Orifice plate inspection apparatus and method

摘要

The fluid jet applicator orifice plate inspection apparatus provides an optoelectronic inspection system including a laser light source and an optical detector mounted on a carriage for traversing an orifice plate to cause laser light to pass through the orifices one at a time for detection on the other side of the orifice plate by an optical detector. The intensity of the detected light is proportional to the area of an individual orifice through which the laser light has been transmitted. The detector generates light intensity signals which are proportional to the area of the orifices and which signals are processed, digitized, and further processed by a data processor to determine, for example, the relative sizes of the orifices along the plate, the orifice size distribution along the plate and flaws of the individual orifices.