Surface texture effects and mitigation for optical triangulation gages

Kevin Harding

doi:10.1117/12.2665901

15 June 2023 Surface texture effects and mitigation for optical triangulation gages

Kevin Harding

Proceedings Volume 12524, Dimensional Optical Metrology and Inspection for Practical Applications XII ; 125240D (2023) https://doi.org/10.1117/12.2665901
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States

Abstract

The challenges and limitation of using laser triangulation gages on optically rough surfaces are well known. Methods such as rotating polarizers, laser oscillations to reduce coherence and surface movement have been demonstrated with limited success and added limitations. The use of new LEDs with high power by area has opened up new possibilities but can still pickup non-coherent surface texture characteristics. This paper will attempt quantify how these surface textures effects impact the triangulation measurements and explore methods to further reduce their influence on the measurements.

Conference Presentation

Citation Download Citation

Kevin Harding "Surface texture effects and mitigation for optical triangulation gages", Proc. SPIE 12524, Dimensional Optical Metrology and Inspection for Practical Applications XII , 125240D (15 June 2023); https://doi.org/10.1117/12.2665901

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