Patent ID: 8520311

Claim:
A laser optical system for shaping at least one laser beam bundle comprising a plurality of laser beams generated by emitters, the emitters being offset relative to one another in a slow axis (X axis) of the plurality of laser beams and at a distance from one another, with at least one plate fan located in a beam path of the laser beam bundle, the at least one plate fan comprises several plates made of a light transmitting material, the several plates are arranged offset in a direction perpendicular to their surface sides and are arranged with their surface sides in planes which enclose a beam direction (Z axis) and a fast axis (Y axis) of the plurality of laser beams, the several plates forming first flat plate narrow sides for a beam entry and opposite the first flat plate narrow sides, second flat plate narrow sides for a beam exit, wherein the several plates of the at least one plate fan are arranged so that each emitter, or each group consisting of a maximum of five emitters of at least two emitters, is allocated a separate plate and that a plate thickness of the plates is selected so that the laser beams pass through each plate without reflection in an area of the plate surface sides, wherein the several plates of the at least one plate fan have a plate thickness which is at least equal to a divergence of the plurality of laser beams of each emitter or of each emitter group associated with the several plates in the slow axis on the second flat plate narrow sides.