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Narrow-bodied, single- and twin-windowed portable laser scanning head for reading bar code symbols

DC
  • US 5,130,520 A
  • Filed: 11/17/1988
  • Issued: 07/14/1992
  • Est. Priority Date: 01/25/1982
  • Status: Expired due to Term
First Claim
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1. A hand-held unit operated by a user for reading bar code symbols or the like, comprising:

  • (a) beam-producing means including a laser located in said unit and generating a light beam directed form said unit toward a symbol to be read while the unit is spaced from the symbol to be read;

    (b) detector means receiving reflected light from a field of view on a symbol being read and producing electrical signals responsive to light received;

    (c) scanning means for scanning at least one of said beam or said field of view across said symbol being read while said symbol is visible to said user;

    (d) evaluation means responsive to said electrical signals for identifying successful recognition of a symbol being read;

    (e) read-control means to initiate by action said user the reading of a symbol and to automatically terminate said scanning of a symbol after said identifying has occurred, said read control means and said evaluation means employing a microprocessor in said unit, the microprocessor controlling said identifying and said automatically terminating;

    (f) means on said unit for manually entering data into the unit by keys, and for displaying data;

    (g) a power supply for said unit;

    (h) and a light-weight housing containing said beam producing means, detector means, scanning means, evaluation means, read-control means, microprocessor, means for manually entering data and displaying data, and power supply means in a self-contained unit.

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