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Multiple plane scanning system for data reading applications

  • US 5,837,988 A
  • Filed: 02/26/1997
  • Issued: 11/17/1998
  • Est. Priority Date: 07/14/1992
  • Status: Expired due to Term
First Claim
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1. A scanner for reading symbols on an object being passed through a scan volume, comprising:

  • a housing includinga first housing section having a first window which is oriented horizontally below the scan volume,a second housing section connected to the first housing section, the second housing section having a second window which is oriented generally vertically to a lateral side of the scan volume,a third housing section having a third window which is oriented obliquely to a lateral side of the scan volume;

    an optical scanning element within the housing;

    at least first and second optical beams which are directed from different directions onto the optical scanning element to produce (a) a first set of scanning beams being directed out the first window, (b) a second set of scanning beams being directed out the second window and (c) a third set of scanning beams being directed out the third window.

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