CHROMATIC SENSOR AND METHOD
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United States of America Patent
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Issued Date -
Feb 13, 2014
app pub date -
Aug 6, 2013
filing date -
Aug 7, 2012
priority date (Note) -
Abandoned
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Abstract
An apparatus for inspecting a measurement object, comprising a workpiece support for supporting the measurement object, and a measuring head carrying an optical sensor. The measuring head and the workpiece support are movable relative to one another. The optical sensor has an objective and a camera for capturing an image of the measurement object along an imaging beam path. The objective has a light entrance opening and a light exit opening, a diaphragm and a multitude of lens-element groups arranged in the objective between the light entrance opening and the light exit opening along a longitudinal axis of the objective. At least two lens-element groups are displaceable parallel to the longitudinal axis. The apparatus also has an illumination device for illuminating the measurement object along an illumination beam path, and a chromatic assembly that can selectively be introduced into the illumination beam path and/or the imaging beam path.
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