Optical inspection apparatus and optical sorting apparatus
US9347892B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 15, 2013 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Jul 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8908
- WIPO fieldMeasurement
- WIPO sectorInstruments
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)…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.