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Inspecting method and apparatus for foreign matter

  • US 6,911,653 B2
  • Filed: 09/19/2002
  • Issued: 06/28/2005
  • Est. Priority Date: 04/26/2002
  • Status: Expired due to Fees
First Claim
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1. An inspecting method for a foreign matter, comprising:

  • a step of irradiating an object being inspected that contains a liquid product with light from a first side face thereof;

    a step of irradiating said object being inspected with light given with a tilt from either side of a second side face opposite to said first side face with respect to said object being inspected;

    a step of receiving transmitted light and reflected light from said object being inspected by imaging means provided at said second side face end;

    a step of processing an image signal from said imaging means; and

    a step of detecting a foreign matter [got entered] in said liquid product based on said image processing.

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