| 摘要 |
PURPOSE:To achieve mechanical and accurate selection, by determining the number of edges and the external and internal widths thereof an an image formed of a welded sealed ampul head detecting a plurality of lines among the diametrical edges thereof with a sensor to jedge whether the shape is defec tive or not from the results based upon an established logical reference. CONSTITUTION:A parallel light beam is projected to an ampul A and the trans mission light beam forms an image on a light receiving surface (f) of a TV camera through an image formation lens (e) to inspect and discriminate scanned images by converting light thereon into an electrical signal to be measured. In this process, dimensions of the portion showing features of the shape of the weld-sealed ampul head distinctly are measured to judge the propriety there of according to an established logical reference. In other words, the external and internal widths of edges are measured with internal and external gate width measuring circuits 111-11n as gate signal to judge on the measured values with a central processing circuit 13 by algorism. On the other hand, the number of edges counted with edge counters 101-10n are discriminated about the propri ety thereof with a discriminator circuit 14.
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