Inspection of mechanical surfaces with polarized structured light

Joanna Schmit; Erik Novak; Shawn McDermed

doi:10.1117/12.2322178

7 September 2018 Inspection of mechanical surfaces with polarized structured light

Joanna Schmit, Erik Novak, Shawn McDermed

Proceedings Volume 10834, Speckle 2018: VII International Conference on Speckle Metrology; 108342F (2018) https://doi.org/10.1117/12.2322178
Event: SPECKLE 2018: VII International Conference on Speckle Metrology, 2018, Janów Podlaski, Poland

Abstract

Measuring scratches, nicks and dents on precision machine parts is a challenge for industry, especially when the parts have to be tested on the factory floor or in the field, far from any metrology laboratory. A new system that combines dynamic interferometry with structured light enables the projection and analysis of polarization-based virtual fringes in a single camera frame. This very compact system, the metrology setup is flashlight-sized, is capable of micrometer precision, yet is immune to vibration, which enables handheld operation in a variety of environments. This paper will discuss the technical approach to achieve vibration-immune 3D measurements and will present a variety of performance tests and a discussion of practical applications of the system.

Citation Download Citation

Joanna Schmit, Erik Novak, and Shawn McDermed "Inspection of mechanical surfaces with polarized structured light", Proc. SPIE 10834, Speckle 2018: VII International Conference on Speckle Metrology, 108342F (7 September 2018); https://doi.org/10.1117/12.2322178

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