Optical inspection apparatus and optical sorting apparatus
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United States of America Patent
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May 24, 2016
Grant Date -
Aug 6, 2015
app pub date -
Jul 15, 2013
filing date -
Jul 20, 2012
priority date (Note) -
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Abstract
The invention concerns an apparatus for inspection of products (3′, 3″), provided with a transport mechanism (2) configured to transport a continuous stream of products (3′, 3″) so that, on leaving the transport mechanism, the product stream (3′, 3″) follows a free-fall path along which it is fed in a single product layer through an inspection zone (16), which has a length (L) that at least corresponds to the width of the aforementioned single product layer, a light source (5, 5′) configured to illuminate said inspection zone (16), a detection unit (6), configured to optically scan the illuminated inspection zone (16), an analysis unit (17) and possibly a removal unit (7) and also a background element (10′), which is situated behind the falling product stream, seen from the position of the detection unit, positioned so that:—light beams from the light source impinge on an illumination zone (14) of the background element when these beams do not impinge on a product from the product stream (3′, 3″),—the detection unit can only receive an image of a detection zone (13) of the background element, characterized in that the background element is mounted so that the illumination zone (14) and the detection zone (13) are separated from each other.
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