LASER FINISHING METHOD AND APPARATUS FOR PROVIDING A FINISHING PATTERN ON A WORKPIECE
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United States of America Patent
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Issued Date -
Sep 30, 2021
app pub date -
Aug 1, 2019
filing date -
Aug 1, 2018
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Abstract
The present application relates to a method of providing a finishing pattern on a workpiece (2) by a laser apparatus (1) comprising at least one laser source (10), preferably a pulsed laser source, generating an output laser beam (11), moving means (12) for said laser beam and a control unit (101) for controlling said laser source (10) and said moving means (12). The method comprises the step of providing command instructions for operating said laser apparatus (1) for scribing a predetermined finishing pattern on a workpiece (2), and the step of operating said laser source (10) and said moving means (12) for generating said output laser beam (11) for scribing lines of the predetermined finishing pattern on said workpiece (2) according to said command instructions. The step of operating the laser source comprises at least one operating mode (C) wherein the energy per unit surface delivered by said laser beam (11) is variable, preferably within a single scan line, by changing the scanning speed (V) of the laser beam (11), and the output power (P) of the laser source and/or the duty cycle (DC) are maintained at a constant value.
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