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Polygons Dynamic Track Definition and Measurement

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Polygons Dynamic Track Definition and Measurement

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Dynamic track is defined as the total mechanical angular variation from facet to facet perpendicular to the scanning direction. This effect is illustrated in figure 1. An optical beam illuminating a polygon with a dynamic track of 10 arc seconds will have a scan envelope from all the facets of 20 arc seconds perpendicular to the scan direction. This is caused by an angle doubling effect on reflection from the rotating mirror.

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