Patent ID: 8395767

Claim:
Apparatus for inspection of concave elements, including containers and/or caps, for detection of contaminations and/or defects, including material excess and/or lacks, comprising means for lighting a concave element to be subjected to inspection, an image detection unit, an optic group and means for processing images acquired by said image detection unit, in order to individuate said contaminations and/or said defects of said concave element, characterized in that said lighting means comprise a first light source, configured to generate a diffused lighting direct on the concave surface of said concave element, and a second light source, configured to generate a grazing lighting directed on the outer lateral surface of said concave element, and in that said optic group is placed so as to receive light emitted by concave surface of said concave element and transmitting the same to said image detection unit, in such way that if said concave element is opaque to the radiation emitted by said lighting means, said first light source is active, while said second light source is attenuated or switched off, while, if said concave element is transparent to radiation emitted by said lighting means, said second light source is active while said first light source is attenuated or switched off.