Multiple plane scanning system for data reading applications

  • US 6,568,598 B1
  • Filed: 05/13/1998
  • Issued: 05/27/2003
  • Est. Priority Date: 07/14/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of scanning an item having a bar code from multiple directions, comprising the steps ofgenerating laser light;

  • providing a single polygon mirror in a path of said laser light;

    generating a first set of scanning beams, a second set of scanning beams, and a third set of scanning beams by reflecting said laser light off said polygon mirror;

    directing said first set of scanning beams through a first window oriented in a first plane to scan the item from one orthogonal direction;

    directing said second set of scanning beams through a second window oriented in a second plane orthogonal to said first plane to scan the item from another orthogonal direction;

    directing said third set of scanning beams through a third window oriented in third plane to scan the item from a diagonal direction.

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