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Laser beam scanner with low cost ditherer mechanism

  • US 5,329,103 A
  • Filed: 10/30/1991
  • Issued: 07/12/1994
  • Est. Priority Date: 10/30/1991
  • Status: Expired due to Term
First Claim
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1. A bar code scanner for scanning a bar code comprising:

  • at least one laser light source including a beam forming means for producing a focused laser beam;

    a scan generator means comprising first and second resonant mechanical systems oscillating in a sine wave at substantially 90 degrees out of phase with each other, said first and second resonant mechanical systems being alternately activated for scanning during the substantially linear portion of said sine wave oscillation;

    collection means for collecting light reflected from said bar code being scanned;

    electronic detection means responsive to said collected light for processing and decoding information from said collected light.

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