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Proceedings Paper

Improved line of light measurements on shiny and transparent surfaces
Author(s): Kevin Harding
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Paper Abstract

The use of laser line systems for cross sectional measurement on production parts is a method that has been in use for over 30 years with few changes in the equipment. A primary limitation of using a laser line triangulation methods has always been the inability to obtain good measurements on shiny or transparent surfaces. Not only is the return signal poor from such surfaces, but the presence of multiple reflections can cause problems. This paper will explore new methods to obtain better measurements on very shiny, mirror like surfaces as well as transparent materials such as plastic and glass. The paper will quantify what improvements may be expected with the improved methods possible today, as well as identify the remaining limitations of these methods. The results will be compared against the results obtained using methods other than line of light triangulation and discuss the comparisons in performance achieved.

Paper Details

Date Published: 14 May 2018
PDF: 9 pages
Proc. SPIE 10667, Dimensional Optical Metrology and Inspection for Practical Applications VII, 106670E (14 May 2018); doi: 10.1117/12.2302883
Show Author Affiliations
Kevin Harding, Optical Metrology Solutions (United States)

Published in SPIE Proceedings Vol. 10667:
Dimensional Optical Metrology and Inspection for Practical Applications VII
Kevin G. Harding; Song Zhang, Editor(s)

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