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Wand type optical reader

  • US 5,508,504 A
  • Filed: 09/22/1994
  • Issued: 04/16/1996
  • Est. Priority Date: 06/03/1992
  • Status: Expired due to Term
First Claim
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1. A laser wand for reading optically encoded information comprising:

  • means for producing a focussed laser light beam having a fixed focal point directed toward optically encoded information;

    a photodetector for sensing light reflected back from the optically encoded information; and

    means, coupled to the means for producing the focussed laser light beam, for contacting a surface on which the optically encoded information is formed to selectively define at least two different distances between the means for producing the focussed laser light beam and the optically encoded information, whereby the diameter of the focussed laser light beam at its point of impact on the optically encoded information will be different for each of the two different distances.

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