Precitec Gmbh & Co. Kg

Precitec Optronik Gmbh

Stefan Birmanns

Rüdiger Moser

Christoph Dietz

Joachim Schwarz

Jonas Nolte

Eric Supernok

Wei Quang Duong

Simon Hähle

Livia Barazzetti

Sascha Grau

Jens Reiser

Thorsten Lorenz

Alexis Donke

Tom Walde

Thomas Witt

Gabriel Palzer

Maurizio Kempf

Igor Shkarban

Fabian Agrawal

A method for analyzing a weld seam formed by a laser welding process includes thermally exciting the weld seam by radiating at least one laser pulse onto the weld seam, acquiring a decay characteristic of a thermal radiation emitted by the weld seam, and determining whether a welding defect is present based on an evaluation of the acquired decay characteristic.

Method and laser machining system for analyzing a weld seam formed by a laser welding process

A method for calibrating at least one optical sensor of a laser machining head is provided. The laser machining head comprises a first optical sensor, a deflection device, and a focusing device. A laser beam path of the first optical sensor passes through the deflection device and the focusing device. The method comprises the steps of: deflecting the beam path of the first optical sensor by the deflection device to a first position on a first reference; generating a first optical measurement signal based on measurement light received by the first optical sensor from the first position on the first reference; and determining a correction value for calibrating the first optical sensor based on the first optical measurement signal and according to a deviation of the first position on the first reference from a first target position, which is specified relative to a position of the machining laser beam.

Method for calibrating one or more optical sensors of a laser machining head, laser machining head, and laser machining system

A method for monitoring a joining seam, in particular during joining by a laser beam, wherein in the processing direction before a processing point a joining site is measured in order to detect the position and geometry thereof, at least one position of a joining seam is determined from the position of the joining point, and in the processing direction after the processing point the joining seam is measured in order to detect the geometry thereof at the determined position. A device is also provided for carrying out said method and to a laser processing head equipped with such a device.

Method and device for monitoring a joining seam during joining by means of a laser beam

A method for determining parameters for the position and orientation of the cornea of an eye and involves the steps of generating linear structures on the iris and/or sclera of the eye, having a camera capture a first image of the eye including the linear structures, and determining, on the basis of the first image, a distance and an orientation of the linear structures in relation to the camera.

Method and apparatus for determining the position and/or the orientation of an eye

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Buch am Irchel, Switzerland

Stefan Birmanns