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Enhanced resolution automatic data collection apparatus and method using an afocal optical element

  • US 8,061,617 B2
  • Filed: 07/27/2007
  • Issued: 11/22/2011
  • Est. Priority Date: 07/28/2006
  • Status: Expired due to Fees
First Claim
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1. A method for reading machine-readable symbols using an automatic data collection device, the method comprising:

  • generating a light beam;

    directing the light beam to a scanning mirror;

    directing the light beam from the scanning mirror to an afocal optical element, the light beam being incident on the afocal optical element;

    using the afocal optical element to change a characteristic associated with a scanning beam; and

    exiting the light beam from the afocal optical element as the scanning beam having the changed characteristic and directing the scanning beam having the changed characteristic onto a target machine-readable symbol,wherein using the afocal optical element to change the characteristic associated with the scanning beam includes using the afocal optical element to decrease a field of view and increase resolution for far-field scanning said target machine-readable symbol at a first time.

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