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US 11,079,218 B2Granted
Measuring distance using a laser processing system with optical amplifier for amplifying measuring beam or reflected part of measurement beam
AssigneePrecitec GmbH & Co. KG
InventorsRüdiger Moser, Martin Schönleber
Life of this patent
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Abstract
The present disclosure concerns a device for distance measurement for a laser processing system. The device comprises a light source, which is configured to generate a primary beam for direction onto a workpiece, at least one detection device configured to record a secondary beam reflected from the workpiece, at least one optical amplifier configured to amplify the primary beam and/or the secondary beam, and an evaluation unit configured to evaluate interference between spectral components in the frequency domain.
Claims10
A distance-measuring device for a laser processing system, comprising:
- a light source configured to generate a measuring beam for direction onto a workpiece;
- at least one detection device configured to detect a reflected part of the measuring beam reflected from the workpiece;
- a beam splitter configured to provide the measuring beam into an object arm and a reference arm;
- at least one circulator configured to direct the measuring beam from the light source into a common beam path between the beam splitter and the at least one circulator and to direct the reflected part of the measuring beam from the common beam path to the at least one detection device;
- and
- an optical amplifier arranged in the common beam path between the beam splitter and the at least one circulator, the common beam path transmitting the measuring beam from the circulator to the beam splitter for directing the measuring beam into the object arm and towards the workpiece and transmitting the reflected part of the measuring beam reflected from the workpiece to the at least one circulator for directing the reflected part of the measuring beam towards the at least one detection device, the optical amplifier configured to amplify the measuring beam before the measuring beam is directed onto the workpiece and to amplify the reflected part of the measuring beam before the reflected part is directed towards the at least one detection device.
3 more elements
A laser processing system comprising:
- a laser processing head for provision of a processing beam, wherein the laser processing head is configured to direct the processing beam onto a processing region of a workpiece;
- and
- a distance-measuring device for a laser processing system, comprising:
- a light source configured to generate a measuring beam for direction onto a workpiece;
- at least one detection device configured to detect a reflected part of the measuring beam reflected from the workpiece;
- a beam splitter configured to provide the measuring beam into an object arm and a reference arm;
- at least one circulator configured to direct the measuring beam from the light source into a common beam path between the beam splitter and the at least one circulator and to direct the reflected part of the measuring beam from the common beam path to the at least one detection device
- an optical amplifier arranged in the common beam path between the beam splitter and the at least one circulator, the common beam path, the common beam path transmitting the measuring beam from the circulator to the beam splitter for directing the measuring beam into the object arm and towards the workpiece and transmitting the reflected part of the measuring beam reflected from the workpiece to the at least one circulator for directing the reflected part of the measuring beam towards the at least one detection device, the optical amplifier configured to amplify the measuring beam before the measuring beam is directed onto the workpiece and to amplify the reflected part of the measuring beam before the reflected part is directed towards the at least one detection device.
5 more elements
Dependencies are inferred from the claim text.