Patent ID: 7878405
Filing Date: 2011-02-01
Classification: G06K

Abstract:
1. A laser targeting system for positioning a symbology reader having an objective lens with an optical axis for reading a target comprising: a housing for accommodating an objective lens; at least one pair of lasers for projecting beams along axes of the lasers parallel to the objective lens optical axis, the paired lasers being positioned opposite one another on either side of the objective lens and symmetrically about the objective lens such that the axis of each laser and the objective lens optical axis are parallely aligned; and at least one pair of optical elements, each of the optical elements for producing a composite beam pattern having a plurality of beam spots symmetrically positioned about the laser axis, each beam pattern further including a beam spot on the corresponding laser axis, each of the paired optical elements being located at the side of the objective lens and in front of the corresponding laser, and being substantially aligned with the objective lens on the front side of the housing, the composite beam patterns being symmetrical with respect to each other, about the objective lens optical axis and substantially matching the boundary of a field of view of the symbology reader, regardless of the scanning angle of the symbology reader.