| http://www.w3.org/ns/prov#value | - The aiming pattern generator of claim 1, wherein the refractive structures are arranged in groups, one of the groups being arranged along one row along the direction, and another group being arranged along another row along a transverse direction perpendicular to the direction; and wherein the beam cross-section is an ellipse having a major axis extending diagonally across both rows; and wherein b
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