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Optical inspection of containers

  • US 9,335,274 B2
  • Filed: 06/29/2011
  • Issued: 05/10/2016
  • Est. Priority Date: 06/29/2011
  • Status: Active Grant
First Claim
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1. An apparatus for inspecting a container having a base and a mouth, said apparatus including:

  • a light source for directing light through the container base into the container, and out of the container through the container mouth, anda light sensor disposed with respect to said light source and the container to receive light transmitted through the container mouth,wherein said light source includes at least first and second light sources operatively disposed adjacent to each other beneath the container base and having differing operating characteristics, and wherein said at least first and second light sources include at least a pair of opposed light sources disposed on opposite sides of a longitudinal axis of the container, and further wherein the differing operating characteristics of the first and second opposed light sources cause different illumination amongst opposed sides of the container mouth disposed on opposite sides of the longitudinal axis of the container, and said light sensor captures images of the container mouth in opposed pairs, each pair of images comprising images of respective segments of the container mouth on opposite sides of the longitudinal axis of the container.

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