Method of and apparatus for checking defectively fused ampoules

Details Method of and apparatus for checking defectively fused ampoules Method of and apparatus for checking defectively fused ampoules

G - Physics

01

B

340/124.6

G01B 11/02 (2006.01) G01B 11/08 (2006.01) G01B 11/24 (2006.01)

Patent

CA 1254284

ABSTRACT OF THE DISCLOSURE A method of checking defectively fused ampoules wherein a head portion of a fused ampoule is project- ed on a light receiving screen so as to focus an image of the head portion thereon, a focused image is scanned with a plurality of scanning lines running in the diametral direction of the focused image and sequentially sweeping in the longitudinal direction thereof to produce a plurality of edge signals corresponding to the scanning lines, the number of edge seguments and the inner and outer widths are measured from each of the edge signals, measured values are compared with predetermined logical refer- ences set for the number of edge segments and inner and outer widths, and the fused ampoule is judged defective when the measured values are incongruous to the logical references.

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