Patent Document ID: 20180080755
Application ID: 15706726
Patent Status: 0

Claim One:
1. A method for operating at least one triangulation laser scanner to identify properties of a surface of a workpiece to be measured by the at least one triangulation laser scanner, the method comprising: providing the at least one triangulation laser scanner, the at least one triangulation laser scanner having a metal-oxide-semiconductor (CMOS) sensor chip, an imaging optical unit and a laser line light source configured to generate a laser line on the workpiece to be measured, the CMOS sensor chip and the laser line light source being arranged relative to the imaging optical unit in compliance with a Scheimpflug condition; providing the workpiece to be measured, the surface of the workpiece to be measured having at least two different regions, the at least two different regions including at least one of a region with different textures, a barcode region, and a detection code region; capturing the surface of the workpiece to be measured by the at least one triangulation laser scanner by: moving the at least one triangulation laser scanner relative to the workpiece to be measured or moving the workpiece to be measured relative to the at least one triangulation laser scanner, and passing over at least a part of the surface of the workpiece by the laser line and thereby capturing actual lateral positions of image points of the laser line on the CMOS sensor chip; restricting an amount of data generated on the CMOS sensor chip in an image recording to a reduced amount of data, the reduced amount of data including data of the actual lateral positions of the image points of the laser line and data of at least one quality criterion for each of the image points of the laser line, the at least one quality criterion being a measure of an intensity distribution along a direction transverse to a local direction of extent of the image points of the laser line on the CMOS sensor chip; transferring the reduced amount of data to at least one evaluation unit at a clock rate greater than a maximum possible clock rate for reading out data of all of the pixels on the CMOS sensor chip; generating surface coordinates of the workpiece to be measured based on the image points of the laser line captured on the CMOS sensor chip by the at least one evaluation unit, the surface coordinates being calculated based on lateral offsets of captured actual positions of the image points relative to nominal positions of the image points of the laser line; and analyzing the reduced amount of data with respect to the quality criterion by the at least one evaluation unit to determine whether at least one of the barcode region, the detection code region, and the region with the different textures is present.