Evaluation of different sampling strategies for pointwise measurement of aspheric surfaces

Rainer Tutsch; Hanno Dierke

doi:10.1117/12.3005542

20 September 2023 Evaluation of different sampling strategies for pointwise measurement of aspheric surfaces

Rainer Tutsch, Hanno Dierke

Author Affiliations +

Proceedings Volume 12607, Optical Technology and Measurement for Industrial Applications Conference; 126070H (2023) https://doi.org/10.1117/12.3005542
Event: Optics and Photonics International Congress, 2023, Yokohama, Japan

Abstract

While many instruments for the measurement of optical surfaces are based on electronic cameras with a regular sampling grid given by the pixels of the image sensor, there is a class of measurement instruments that use pointwise data sampling, either with tactile or with optical sensors. In this case a variety of sampling strategies exists. In our presentation we show that the sampling strategy has a big influence on the resulting measurement uncertainty. For the measurement of aspheric optical surfaces we describe a procedure to select an optimized strategy, extracting a maximum of information from a minimum of sampling points.

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Rainer Tutsch and Hanno Dierke "Evaluation of different sampling strategies for pointwise measurement of aspheric surfaces", Proc. SPIE 12607, Optical Technology and Measurement for Industrial Applications Conference, 126070H (20 September 2023); https://doi.org/10.1117/12.3005542

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