Bar code scanner with scanning beam and/or field of view adjustable about three mutually orthogonal axes

  • US 5,479,002 A
  • Filed: 12/29/1994
  • Issued: 12/26/1995
  • Est. Priority Date: 05/11/1988
  • Status: Expired due to Term
First Claim
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1. In an electro-optical system for reading indicia having parts of different light reflectivity, a scan module comprising:

  • (a) a movable scan head having an exit port;

    (b) means for emitting and directing a light beam along an outgoing path through the exit port toward indicia to be read;

    (c) sensor means having a field of view, and operative for detecting at least a portion of light of variable intensity reflected along a return path off the indicia;

    (d) scanning means for scanning at least one of said light beam and said field of view over the indicia to be read;

    an(e) mean for adjustably mounting the scan head on the scan module for freedom of movement about two mutually orthogonal axes to adjustably position the exit port relative to the scan module, the mounting means including a concave arced portion of a casing of the scan module that supports a spherical surface of the scan head,wherein the directing means includes a light reflector mounted in the scan head for joint movement therewith, andwherein the emitting means includes a light source mounted remotely from the scan head, and an optical fiber for conveying the light beam from the light source to the scan head.

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