On-line measurements with optical scanners: metrological aspects

Virgil-Florin Duma

doi:10.1117/12.612103

13 June 2005 On-line measurements with optical scanners: metrological aspects

Virgil-Florin Duma

Proceedings Volume 5856, Optical Measurement Systems for Industrial Inspection IV; (2005) https://doi.org/10.1117/12.612103
Event: Optical Metrology, 2005, Munich, Germany

Abstract

The paper presents the results of an on-going research regarding the optical scanners with rotating, plane or polygonal mirror, used in the on-line, dimensional industrial measurements. Altough this particular area of applications is considered, the results that have been obtained are also valid for others, different kinds of applications of the laser scanners. The parameters of the two devices considered are deduced, in a comparative look, in a rigouros mathematical approach, different from the one in the state-of-the-art. The sources of errors in the scanning process are analysed, and from this, several new solutions for the reducing or for the compensation of the errors are obtained. The main problem presented is the non-linearity of the functioning characteristic and the possibilities of linearizing it - both for the plane and for the rotating mirror device. From the discussion, a designing calculus of the polygonal scanners results, on different cases, with regard to the requiered value of the duty-cycle. The study is completed, for each scanner, with an experimental part, that verifies the theoretical results.

Citation Download Citation

Virgil-Florin Duma "On-line measurements with optical scanners: metrological aspects", Proc. SPIE 5856, Optical Measurement Systems for Industrial Inspection IV, (13 June 2005); https://doi.org/10.1117/12.612103

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