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Diffuse bright field illumination system for a barcode reader

  • US 9,672,399 B2
  • Filed: 08/06/2016
  • Issued: 06/06/2017
  • Est. Priority Date: 10/24/2013
  • Status: Active Grant
First Claim
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1. A barcode reader, comprising:

  • a housing;

    a camera located within the housing configured to capture an image of a barcode within a field of view of the camera, the field of view being directed along an optical axis; and

    an illumination system configured to illuminate the barcode while the camera captures the image of the barcode, the illumination system comprising;

    a dark field illumination system comprising a plurality of prism optics, the plurality of prism optics redirecting illumination toward the field of view at an angle less than forty-five degrees relative to a plane that is substantially perpendicular to the optical axis; and

    a diffuse bright field illumination system comprising a diffusion optic positioned between the plurality of prism optics, the diffusion optic diffusing illumination through a front major surface of the diffusion optic into the field of view substantially parallel to the optical axis.

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