Patent ID: 8208135
Filing Date: 2012-06-26
Classification: B23K,G01B,G01N

Abstract:
1. A method for optical assessment of welding quality during welding in which a welding zone is observed by an optical sensor, and a laser triangulation line is laid over an already solidified part of the weld, characterized in that a process illumination of a still liquid welding material shining in the visible region, and a gray or color image of a solidified weld and the laser triangulation line are recorded in different image regions, with the different image regions recorded on a single sensor and read out as an image, wherein a recording of a first image region with the process illumination is performed separately from a recording of a second image region with the triangulation line and the gray or color image, wherein the different image regions are read out with different exposure times, wherein the second image region comprises a subregion containing the laser triangulation line, and a subregion containing the gray or color image, which are recorded together, and wherein the second image region is recorded with an exposure time of approximately 10 μsec and is illuminated with an illumination period by a flashlight source of less than 10 μsec.