Laser light beam scanning device for reading coded information

A scanning device of a laser light beam for reading coded information, comprising:

• a first emission source of a first laser light beam, the first laser light beam defining a first optical path;
• a second emission source of a second laser light beam, the second laser light beam defining a second optical path, portions of the first and second optical paths being vertically aligned and substantially parallel with one another;
• an optical element for scanning the first and second laser light beams vertically aligned and substantially parallel with one another on a support containing coded information;
• a linear polarizer located along the first and second parallel optical paths of the first and second laser light beams, upstream of the optical element for scanning in the propagation direction of the first laser light beam and the second laser light beam vertically aligned and substantially parallel with one another, the linear polarizer configured to:
• linearly polarize a first portion (s) of the first and second laser light beams vertically aligned and substantially parallel with one another and in substantially one first plane, and reflect the polarized portion towards the optical element, thereby causing the first portion (s) to be used when performing a scan;
• and
• be substantially transparent for a second portion (p) of the first and second laser light beams, thereby causing the second portion (p) to substantially not be directed towards the optical element so as to substantially not be used when performing a scan.