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Bioptical laser scanner for six-sided 360° Pos-based scanning

  • US 7,083,102 B2
  • Filed: 01/13/2003
  • Issued: 08/01/2006
  • Est. Priority Date: 01/11/2002
  • Status: Expired due to Fees
First Claim
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1. A bioptical laser scanning system capable of scanning a bar code symbol located on the surface of an object presented within a 3-D scanning volume at any orientation and from any direction at a point of sale (POS) station, said bioptical laser scanning system comprising:

  • a horizontal section integrally connected to a vertical section;

    a horizontal-scanning window formed in said horizontal section;

    a vertical-scanning window formed in said vertical section, and being substantially orthogonal to said horizontal-scanning window;

    a first plurality of laser beam folding mirrors disposed within said horizontal section;

    a second plurality of laser beam folding mirrors disposed within said vertical section;

    a first laser beam production module for producing first laser beam, and a second laser beam production module for producing a second laser beam;

    a first polygonal scanning element disposed within said horizontal section and having multiple reflective surfaces rotating about a first axis of rotation, for scanning said first laser beam and producing a first laser scanning beam that reflects off said first plurality of laser beam folding mirrors to generate and project a first plurality of laser scanning planes through said horizontal-scanning window; and

    a second polygonal scanning element disposed within said vertical section and having multiple reflective surfaces rotating about a second axis of rotation, for scanning said second laser beam and producing a second laser scanning beam that reflects off said second plurality of laser beam folding mirrors to generate and project a second plurality of laser scanning planes through said vertical-scanning window,whereby said first and second pluralities of laser scanning planes (i) intersect within predetermined scan regions contained within a 3-D scanning volume defined between said horizontal-scanning and vertical-scanning windows, and (ii) generate a plurality of groups of quasi-orthogonal laser scanning planes within said 3-D scanning volume, andwherein said plurality of groups of quasi-orthogonal laser scanning planes form a complex omni-directional 3-D laser scanning pattern within said 3-D scanning volume capable of scanning a bar code symbol located on the surface of an object presented within said 3-D scanning volume at any orientation and from any direction at said POS station.

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