Contrast type defect e.g. inclusion, detection device for e.g. bottle, has light source comprising point sources generating light rays, whose orientation is different from that of generated beam which is oriented in direction of object

摘要

The device has a light source (15) comprising a beam generating unit (4) which generates a beam (5) of light rays parallel and oriented in the direction of a transparent or translucent object (1) positioned on a conveyor (2). The light source has a set of point sources (6) generating light rays (7), whose orientation is different from that of the beam, where the point sources are independently controlled. An independent claim is also included for an inspection machine detecting a defect of a transparent object and comprising two defect detection devices.