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Bringing a Third Dimension to Laser Materials Processing

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DAVID STADLER AND JOERG WERTLI, OPTOTUNE SWITZERLAND, AG

The use of laser light for materials processing has become a standard practice with widespread use in industry. The basic idea is to focus a laser beam onto a fixed working plane and create a spot of maximal intensity. At this position the laser processes the surface to drill, engrave or mark the work piece. Fixed glass optics, in combination with movable galvo mirrors, provide for the scanning of the whole working plane in horizontal X- and Y-directions. A typical scan field measures 100 × 100 mm. However this is restricted to one specific working distance (2D), whereas objects...Read full article

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