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Optical reader applicable to plurality of uses

  • US 20030001014A1
  • Filed: 09/05/2002
  • Published: 01/02/2003
  • Est. Priority Date: 07/20/1995
  • Status: Active Grant
First Claim
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1. An optical reader for scanning a mark carried by an article using scanning light, detecting light reflected from said mark, and thus reading information represented by said mark, comprising:

  • a light source;

    a scanning means that is driven by a driving means and scans light emanating from said light source;

    a plurality of reflection mirrors for reflecting scanning light scanned by said scanning means and creating a scanning pattern composed of a plurality of scan trajectories;

    a read window through which scanning light reflected from said reflection mirrors is emitted; and

    a light receiving means for receiving light reflected from said mark;

    said optical reader further comprising;

    a mode changing means for changing a plurality of operation modes among which one or ones of said plurality of scan trajectories to be validated for reading are different;

    said plurality of operation modes including a specific scanning ray mode in which reading said mark using only a specific scan trajectory constituting said scanning pattern is validated and reading said mark using the other scan trajectories is invalidated.

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