DEVICE FOR TESTING ARTICLES

摘要

The invention relates to the optical testing of articles. The invention is characterized in that a number of light sources (7) which are arranged along at least one circular line and define an illumination ring (2) are provided as the lighting unit, that the light sources (7) can be switched on and off at predetermined times and/or can be controlled with respect to the intensity of the light emitted by them, that an image recording unit or camera detects the object region (8) present within the illumination ring or partial illumination ring (2) by means of its image region, and that the distance between the light sources (7) that are individually arranged along the illumination ring (2) or the light segments (7'') or subsegments (7''') formed by the light sources (7) or the peripheral extent of the regions of the illumination ring (2) not emitting light and lying along the circular line form an angle at center s = 10°.