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Hand-held optically readable character set reader having automatic focus control for operating over a range of distances

  • US 5,837,987 A
  • Filed: 11/19/1996
  • Issued: 11/17/1998
  • Est. Priority Date: 08/08/1986
  • Status: Expired due to Fees
First Claim
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1. A hand-held optical indicia reader operational at a plurality of distances from optical indicia to be read, said reader comprising:

  • (a) an indicia sensor capable of outputting a signal in response to sensed optical indicia;

    (b) a distance measurement device to determine the distance of the optical indicia from said reader; and

    (c) an adjustment system to configure said reader to read the optical indicia at the distance determined by said distance measurement device.

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