%0 Book Section
%T In-line detection and evaluation of surface defects on thin metallic wires
publisher The International Society for Optical Engineering (SPIE)
%D 2001
%U 0-8194-4094-9
%@ https://hdl.handle.net/20.500.14352/60856
%X We have developed a prototype for in-line detection of surface defects in metallic wires, specially for scratches. A simple geometrical relationship between surface topography and conical reflection, permits to correlate the defects with intensity patterns in a simple way. The presented apparatus consists basically in a grating-divided laser beam incident on angular equidistant points. A CCD and an associated optics capture the information of the whole wire perimeter at once. Analytic rudiments are provided in agreement with the experimental results.
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