Robert Boschgmbh

Roland Gauch

Tobias Graf

Andreas Letsch

Ulrich Graf

Andreas Michalowski

Jens Koenig

Thomas Kiedrowski

Dmitriy Mikhaylov

Andreas Russ

Michael Diez

A method and a laser assemblage are described for material processing, such that in a laser assemblage, a laser beam is focused onto a processing/imaging plane and the laser beam can be adapted in terms of its intensity distribution by way of at least one beam shaper. Provision is made in this context that in order to avoid uniformity defects in the processing/imaging plane, the laser beam is split by way of at least one beam splitter into at least two partial or individual beams, and the partial or individual beams are differently influenced, or each partial or individual beam is constituted from a laser source having a different wavelength, in such a way that after they are combined and focused onto the processing/imaging plane they form an output beam having an intensity profile, adjacent intensity maxima of the intensity profile differing in terms of their light properties. It is thereby possible to prevent the occurrence of obtrusive interference so that obtrusive speckle patterns are largely eliminated, with the result that beam shaping quality, in particular for laser processing processes, can be considerably improved.

Method and device for shaping radiation for laser processing

A device for projecting a laser beam onto a workpiece includes at least one first optical element, at least one second optical element, and at least one third optical element. The at least one first optical element is configured to project the laser beam onto the at least one second, in particular diffractive, optical element. The at least one second optical element is configured to convert an intensity profile of the laser beam. The at least one third optical element is configured to project the laser beam onto the workpiece. The device is configured such that a diameter of the laser beam on the workpiece can be varied while maintaining the intensity profile with a stationary workpiece.

Device and method for laser material processing

An electrical energy store having a spatially-optimized electrode interconnection. The electrical energy store () comprises flat electrodes (), flags () projecting laterally from the electrodes (), and external terminals (). A plurality of electrode regions are respectively stacked, one on top of another, to form an electrode stack (). A plurality of flags () are arranged one on top of another in a flag stack (), and are respectively materially bonded, both mutually and with an associated external terminal (). The energy store is characterized in that each flag () of a plurality of flags () in a flag stack (), which is bonded to the associated external terminal (), is materially bonded to a respectively adjoining flag () in a region in which the flag () is oriented in an inclined direction at an angle (&#x3b1;) to the surface () of the associated external terminal ().

Electrical energy store, specifically a battery cell, with spatially-optimized electrode interconnection

A method is provided for processing a workpiece using laser radiation, particularly for the purpose of laser ablation. At least one laser beam is provided, which is affected using at least one changeable beam forming device. The laser beam subsequently impinges upon at least one processing area of the workpiece. Using the beam forming device, at least one specified adjustable beam profile is impressed upon the laser beam at the location of the processing area configured.

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Ditzingen, Germany

Roland Gauch