Chromatic confocal range sensor comprising a camera portion
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United States of America Patent
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Nov 28, 2017
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N/A
app pub date -
Jul 9, 2015
filing date -
Jul 9, 2015
priority date (Note) -
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Abstract
A chromatic confocal range sensor optical pen comprises a housing, an in/out optical fiber, a chromatically dispersive lens configuration, a reflected light dividing configuration comprising a lower NA zone and a higher NA zone, and a camera portion. The lens configuration is configured to receive source light from the optical fiber and output focused source light to a workpiece surface with axial chromatic dispersion, and receive reflected light from the workpiece surface and focus at least a portion of the reflected light to the fiber aperture. The reflected light dividing configuration is arranged to divide the reflected light into a measurement portion and an imaging portion. In some embodiments, the lower NA zone directs the imaging portion along an imaging optical path to the image detector, and the higher NA zone directs the measurement portion along a measurement optical path to a point proximate to the fiber aperture.
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