The SCDI provides extraordinary diffuse illumination performance. The patented design of the SCDI makes it ideal for moderately faceted and undulating specular surfaces. The SCDI is designed for those critical applications involving highly specular surfaces where any reflections of camera aperture or "seams" in the lighting envelope will cause a vision system to see defects where none exist. Examples of such applications include compact disk artwork verification and the inspection of solder patterns on circuit boards. The NERLITE SCDI allows products to be inspected "in the package"--even blister-packaged pharmaceutical products and computer chips in the tube.