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Illumination system for use in imaging moving articles

  • US 6,352,349 B1
  • Filed: 03/24/2000
  • Issued: 03/05/2002
  • Est. Priority Date: 03/24/2000
  • Status: Expired due to Term
First Claim
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1. In a system for conveying articles on a conveyor in a direction of travel under a camera, an apparatus for illuminating an upper surface of said articles, comprising:

  • an elongated light source positioned alongside said conveyor, with a longitudinal axis of said light source forming an angle from the horizontal;

    said light source including a lamp and an elongated reflector positioned to reflect light from said light source toward articles on said conveyor; and

    a light directing device positioned between said light source and said conveyor to receive light from said light source and to direct the light toward articles on said conveyor at an angle equal to or greater than forty degrees from an optical axis of said camera; and

    a barrier positioned to confine the light illuminating said articles to light passing through said light directing device.

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