Print Email Facebook Twitter Effect of partial coherent illumination on Fourier Ptychography Title Effect of partial coherent illumination on Fourier Ptychography Author Heemels, Alex (Student TU Delft) Agbana, T.E. (TU Delft Team Raf Van de Plas) Pereira, S.F. (TU Delft ImPhys/Optics) Diehl, J.C. (TU Delft Design for Sustainability) Verhaegen, M.H.G. (TU Delft Team Raf Van de Plas) Vdovin, Gleb (TU Delft Team Raf Van de Plas) Contributor Shaked, Natan T. (editor) Hayden, Oliver (editor) Date 2020 Abstract Fourier Ptychography is a computational imaging technique able to decouple high resolution from wide field of view, bypassing the diffraction limit of the microscope. Since it does not rely on high precision mechanics or fluorescent imaging, it is of practical interest for implementation in low scale devices. Despite its gains, realizing a functional low-cost setup working at the theoretical limits is challenging due to many factors causing discrepancies between theory and practice. Misalignment of the light emitting diode array (LED-array), optical system aberrations and use of partial coherent sources are common issues which have been addressed with calibration algorithms. However, physical interpretation of how these factors influence the algorithm and cause mismatches between theory and practice has had little attention so far. This work provides a discussion based on simulation results on the effect of the partial coherence of the source. From obtained results, an optimal set of LEDs for data acquisition is described which avoids degeneracy caused by partial coherence and is based on the numerical aperture (NA) of the objective and source parameters such as bandwidth and size. Subject Fourier PtychographyPartial CoherenceCoherencePhysical Optics To reference this document use: http://resolver.tudelft.nl/uuid:a381ef13-b93b-4b5f-8d0b-b7cbab87da96 DOI https://doi.org/10.1117/12.2544766 Publisher SPIE, Bellingham, WA, USA ISBN 978-1-5106-3265-3 Source Proceedings of SPIE: Label-Free Biomedical Imaging and Sensing (LBIS) 2020, 11251 Event SPIE BiOS 2020: Label-free Biomedical Imaging and Sensing (LBIS) 2020, 2020-02-01 → 2020-02-06, San Francisco, United States Series Progress in Biomedical Optics and Imaging - Proceedings of SPIE, 1605-7422, 11251 Part of collection Institutional Repository Document type conference paper Rights © 2020 Alex Heemels, T.E. Agbana, S.F. Pereira, J.C. Diehl, M.H.G. Verhaegen, Gleb Vdovin Files PDF 112511K.pdf 8.45 MB Close viewer /islandora/object/uuid:a381ef13-b93b-4b5f-8d0b-b7cbab87da96/datastream/OBJ/view