San Diego-based Wintriss Engineering Corp. installed a Web Ranger surface-inspection system at a manufacturer of window film, to detect very faint scratches in the film.
The scratches can be less than 1 mil wide, so they are very difficult to find during the production process, but they stick out when the film is installed in a window in a house.
Wintriss developed an innovative lighting solution based on a special optical technique that uses the refractive index of the scratches.
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