Jenoptik Automatisierungstechnik Gmbh

Stefan Acker

Juergen Weisser

Ronny Ullmann

Uwe Wagner

Gisbert Staupendahl

A system for deleting the edges from coated substrates () and for separating said substrates into individual modules along the edge-deleted strips, wherein a laser scanner () for edge deletion and a laser head () for separating the substrate are disposed on opposite surfaces of the substrate () and, depending on the machine direction, can be positioned relative to each other, and their movement can be jointly controlled in such a manner that the laser scanner (), in the machine direction, is always disposed at a fixed distance in front of the laser head (), with two directions that are perpendicular to each other, preferably each with alternating directions of movement being available as machine directions.

System for producing thin-layer solar cell modules

The invention is directed to a method for generating optically perceptible laser-induced cracks in brittle material, wherein a laser beam, followed by a coolant jet, is guided relative to the surface of the brittle material in order to advance a crack trail into the material starting from an initial crack, and wherein a marking agent which penetrates into the crack during the formation of the crack so as to make the latter visible is mixed with the coolant.

Method for generating optically perceptible laser-induced cracks in brittle material

Flat workpieces of brittle material be severed in a time-saving manner by an arrangement according to the invention by inducing thermomechanical stresses by laser radiation, particularly along severing lines in the same orientation in alternating directions, in that the arrangement has two coolant nozzles which selectively direct coolant to the workpiece and which, preferably coupled with optical means for shaping the laser beams, are mounted so as to be rotatable around the axis of the laser head.

Arrangement for severing a flat workpiece of brittle material multiple times by means of a laser

The invention is directed to a beam-shaping unit for generating a beam bundle which is focused in a punctiform manner, propagates in a ring shape, and has a radiationless central area, comprising a focusing lens, a first axicon and a second axicon, and to an arrangement with a beam-shaping unit of this kind for introducing radiation energy into a workpiece comprising weakly absorbent material which is arranged between a first resonator mirror and a second resonator mirror. The first resonator mirror which is arranged in front of the workpiece in the radiating direction is located in the radiationless central area. The radiation energy can be absorbed to the maximum extent by repeatedly passing through the same interaction volume in the workpiece.

Beam formation unit comprising two axicon lenses, and device comprising one such beam formation unit for introducing radiation energy into a workpiece consisting of a weakly-absorbent material

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Waldeck, Germany

Stefan Acker