An optical code reader of the imager type includes: at least one non-collimated light source having an illumination optics associated therewith including at least one lens; and a photodetector device having a receiving optics associated therewith including at least one lens, wherein the at least one lens of the illumination optics and the at least one lens of the receiving optics are displaceable together to change their distance from the at least one light source and from said photodetector device respectively.