The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2019
Filed:
Nov. 11, 2015
Precitec Optronik Gmbh, Neu-Isenburg, DE;
Markus Kogel-Hollacher, Haibach, DE;
Martin Schöleber, Aschaffenburg, DE;
PRECITEC OPTRONIK GMBH, Neu-Isenburg, DE;
Abstract
The invention relates to a machining head for a laser machining device, which is equipped for machining a workpiece () using laser radiation (). The laser machining head comprises an adjustable focusing optical unit (), which focuses the laser radiation () in a focal spot (). The distance between the focal spot () and a machining head can be modified by modifying the focal length of the focusing optical unit (). A scanning apparatus () deflects the laser radiation () in different directions. An optical coherence tomography device () measures a distance between the treatment head and the workpiece (). Here, measuring light (), which was generated by a measuring light source () and reflected by the workpiece (), interferes in the coherence tomography device () with measuring light, which traveled an optical path length in a reference arm (). A path-length modulator () is disposed in the reference arm () and it updates the optical path length in the reference arm () synchronously with, and dependent on, a change in the focal length of the focusing optical unit ().