Wavelight Gmbh

Wavelight Ag

Alcon, Inc.

Mathias Wölfel

Olaf Kittelmann

Klaus Wolfgang Vogler

Daniel Thürmer

Christof Donitzky

Thomas Deisinger

Claudia Gorschboth

Gerhard Robl

Martin Starigk

Franziska Woittennek

Richard Heimisch

Klaus Vogler

Daniel Thuermer

Olaf Dr Kittelmann

An apparatus for operating a laser materials processing and measurement device with a controllable laser for generating a laser beam and beam control means for adjusting the focus zone of a controlled portion of the laser beam in three spatial directions comprises an interface for operating a bidirectional data transfer link with the laser and the beam control means, and user control means for inputting and displaying control commands or control command sequences and for monitoring and/or controlling operation and/or the operating state of the device. So that all the components of the apparatus may also be tested with regard to all functionalities, if the laser materials processing and measurement device is not operationally ready and/or not connected to the interface, according to the invention the apparatus comprises simulation means for simulating operation of the device and/or of the user control means.

Apparatus and method for operating a laser materials processing and measurement device

A laser device, in particular for ophthalmological laser surgery, comprising a laser source () for providing laser radiation, controllable scan components () for setting a focus position of the laser radiation, measuring components () for registering information that is representative of an actual position of the radiation focus, and also a control arrangement () controlling the laser source and the scan components. In accordance with the invention, the control arrangement has been set up to bring about the implementation of a test-mode operation of at least some of the scan components with the laser source turned off, in accordance with a predetermined test scan pattern, the test scan pattern defining at least one scan path for the radiation focus, and the control arrangement having been set up to bring about, during a scan movement along the scan path, repeatedly in succession a registration of the actual focus position without stopping the scan movement, and to ascertain a desired focus position, assigned to each registered actual focus position.

Laser device, in particular, for ophthalmological laser surgery

A process is proposed for testing a laser device that has been set up to emit pulsed focused laser radiation, the focal position of which is adjustable both in and across the direction of propagation of the laser radiation. The laser device includes a contact element that is transparent to the laser radiation, with an abutment surface for abutment of an object to be machined. Within the scope of the process, a test object that is transparent to the laser radiation at least in a machining region is applied onto the abutment surface of the contact element. Then laser radiation is beamed into the test object bearing against the abutment surface and in the process the focal position is moved in accordance with a predetermined test pattern, in order to generate enduring machining structures in the test object.

Process for testing a laser device

A laser device, in particular for ophthalmological laser surgery, comprising a laser source () for providing laser radiation, controllable scan components () for setting a focus position of the laser radiation, measuring components () for registering information that is representative of an actual position of the radiation focus, and also a control arrangement () controlling the laser source and the scan components. In accordance with the invention, the control arrangement can be set up to bring about the implementation of a test-mode operation of at least some of the scan components with the laser source turned off, in accordance with a predetermined test scan pattern, the test scan pattern representing a plurality of discrete desired focus positions to be traversed in succession, and the control arrangement having been set up to stop, at each of the desired focus positions, the scan movement of the scan components and to ascertain, assigned to each of the desired focus positions, respectively an actual focus position on the basis of the registered information of the measuring components.

Laser device for ophthalmological laser surgery

A laser-assisted material-machining device comprises a laser () for providing a pulsed laser beam (), a measuring arrangement () in order to obtain measured values of a fundamental-wave power of the laser beam and also of a power of at least one higher harmonic generated from the laser beam by frequency multiplication, and an evaluating unit () connected to the measuring arrangement, which has been set up to examine the quality of the laser beam () in a manner depending on the measured fundamental-wave power, on the measured power of the higher harmonic, and on a set radiant power of the laser (). By formation of the quotient of the measured fundamental-wave power and of the measured power of the higher harmonic, the current conversion efficiency of the frequency multiplication can be ascertained. Said conversion efficiency is a measure of the quality of the wavefront and of the pulse duration of the laser beam ().

Apparatus for treating a material and method for operating the same

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Erlangen, Germany

Mathias Wölfel