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Licensed Unlicensed Requires Authentication Published by De Gruyter March 9, 2019

Simulation and analysis of optical imaging systems including real freeform components

Johannes Stock, Matthias Beier, Johannes Hartung, Sebastian Merx and Herbert Gross

Abstract

In recent years, the precision of the manufacturing process for optical surfaces has improved tremendously. As a result, freefrom surfaces have become more attractive options for imaging applications with increased accuracy requirements. However, with regards the integration into an optical system, performance is often limited due to surface imperfections, such as mid-spatial frequency errors and alignment errors. This demonstrates the need for a more holistic description of systems, including multiple freeform components, which enable performance predictions based on the system as a whole. In this work, a solution for such a simulation is presented and verified by a comparison with the experimental data. This procedure not only predicts system performance but also supports tolerancing and easier alignment.

Acknowledgments

The authors would like to thank the Federal Ministry of Education and Research (BMBF) for funding this work, as part of the project Wk+fo+ (Funder Id: 10.13039/501100002347, 03WKCX1C). Parts of the research were supported by the German Aerospace Center (DLR) within the project VISTEL (Funder Id: 10.13039/501100002946, 50EE1224). Johannes Stock would like to thank the Carl-Zeiss-Stiftung for supporting the research and Joshua Goncalves for several comments on the manuscript.

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Received: 2018-12-04
Accepted: 2019-02-08
Published Online: 2019-03-09
Published in Print: 2019-04-24

©2019 THOSS Media & De Gruyter, Berlin/Boston