Optoelectronic unit for a laser welding monitoring system

A. Cobo, J. M. López-Higuera, D. A. González, F. Bardin, D. P. Hand, J. D C Jones

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Laser welding is being introducing for the manufacturing of critical parts of engines in the aeronautical industry among others- due to its many advantages over other welding techniques. However, process reliability must be improve, particularly, a precise control of the focal point of the laser is required to ensure full penetration over the entire seam. In this paper, we present an optoelectronic sensor that is able to optimize the focal position of the welding laser, by means of the monitoring of the light emitted by the process in two different spectral bands and picked by an optical fibre head. The system has been optimized for use in a real manufacturing environment: it is robust, compact, easy to operate, and able to adjust itself to different welding conditions and laser setups. © 2004 IEEE.

Original languageEnglish
Title of host publicationProceedings of IEEE Sensors
Number of pages3
Publication statusPublished - 2004
EventIEEE Sensors 2004 - Vienna, Austria
Duration: 24 Oct 200427 Oct 2004


ConferenceIEEE Sensors 2004


  • Chromatic aberration
  • Focus control
  • Laser welding
  • Optical sensor


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