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Optical reader system for substrates having an optically readable code

  • US 8,333,325 B2
  • Filed: 01/26/2011
  • Issued: 12/18/2012
  • Est. Priority Date: 08/20/2002
  • Status: Active Grant
First Claim
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1. An optical reader system comprising:

  • a source light assembly including a code-reading beam and a fluorescence-excitation beam that are configured to illuminate encoded substrates, the substrates having optically readable codes that provide output signals when the code-reading beam is incident thereon, the output signals being indicative of the codes;

    a fluorescence detector configured to detect fluorescent signals from the substrates;

    code pickup optics configured to project the output signals from the optically readable codes onto a Fourier plane; and

    a code detector positioned to detect the output signals in the Fourier plane.

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