Patent ID: 11925999
Assignee: TRUMPF LASER- UND SYSTEMTECHNIK GMBH
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 15:
16. A workpiece processing machine comprising:
a beam emission head configured to provide a machining beam configured to process a workpiece;
an optical interferometer comprising:
a beam source for generating measurement radiation;
a beam splitter configured to split the measurement radiation between a reference path and a measurement path, wherein the workpiece is positioned within the measurement path,
a retroreflector positioned within the reference path, and
a detector configured to detect a total power of the beam redirected to the detector from the workpiece along the measurement path and from the retroreflector along the reference path,

an adjustment element configured to change a second power portion of the total power of the beam redirected from the retroreflector to the detector; and
one or more controllers configured to act on the adjustment element to control a ratio between a first power portion of the beam redirected from the workpiece to the detector and the second power portion of the beam redirected from the retroreflector to the detector,
wherein the adjustment element is configured to change the power portion of the beam in the reference path, and
wherein the adjustment element is configured to act on a focusing unit to change a focus position of the beam in the reference path.