Apparatus for imaging the inner surface of a cavity within a workpiece
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United States of America Patent
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Dec 18, 2012
Grant Date -
Jan 6, 2011
app pub date -
May 4, 2010
filing date -
May 4, 2009
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Abstract
An apparatus for imaging the inner surface of a cavity in a workpiece has an optical system including a panoramic field of view that is linked to an imager and a downstream evaluation device by an image communication link. The apparatus furthermore has an illumination system including a light source to illuminate an imaging region of the inner surface, which region has been captured by the optical system. According to the invention, the illumination system is disposed in such a way relative to optical system, and for which the beam path is selected in such a way, that a first axial section of the imaging region is able to be illuminated under brightfield illumination, while simultaneously a second axial region spaced apart from the first axial region is able to be illuminated under darkfield illumination.
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