Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-11-30
1992-12-29
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
356240, G01N 904
Patent
active
051754282
ABSTRACT:
The apparatus is used for testing the surface structure of hollow, cylindrical regions of transparent, hollow bodies (e.g. bottles) moved along a track. It comprises an illuminating device (10), a conveyor (14) by means of which the hollow bodies (34) are moved through an inspection region, and an imaging device (12). The illuminating device (10) has several light sources (26) which are arranged so that, in every position within the inspection region (9), the hollow bodies (34) receive light at an angle of incidence such that the hollow bodies (34) act as wave guides and appear as secondary light sources with respect to the imaging device (12), so that the imaging device (12) yields a high-contrast image of the surface structures of the hollow bodies. The device is principally used for the testing of recycled bottles.
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Agerskov Carsten
Apter Robert
Jacobi Ulrik
Pau Louis-Francois
Sloth Henrik
Allen Stephone
Elpatronic AG
Nelms David C.
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