Print Email Facebook Twitter High-order-helix point spread functions for monocular three-dimensional imaging with superior aberration robustness Title High-order-helix point spread functions for monocular three-dimensional imaging with superior aberration robustness Author Berlich, Ren (Fraunhofer Institute for Applied Optics and Precision Engineering) Stallinga, S. (TU Delft ImPhys/Imaging Physics) Department ImPhys/Imaging Physics Date 2018 Abstract An approach for designing purely refractive optical elements that generate engineered, multi-order-helix point spread functions (PSFs) with large peak separation for passive, optical depth measurement is presented. The influence of aberrations on the PSF’s rotation angle, which limits the depth retrieval accuracy, is studied numerically and analytically. It appears that only Zernike modes with an azimuthal index that is an integer multiple of the number of PSF peaks introduce PSF rotation, and hence a depth estimation errors. This implies that high-order-helix designs have superior robustness with respect to aberrations. This is experimentally demonstrated by imaging an extended scene in the presence of severe system aberrations using novel, cost-e cient phase elements based on UV-replication on the wafer-scale. To reference this document use: http://resolver.tudelft.nl/uuid:82e8359b-c8d9-42ac-aed0-99a457364483 DOI https://doi.org/10.1364/OE.26.004873 ISSN 1094-4087 Source Optics Express, 26 (4), 4873-4891 Part of collection Institutional Repository Document type journal article Rights © 2018 Ren Berlich, S. Stallinga Files PDF oe_26_4_4873.pdf 8.6 MB Close viewer /islandora/object/uuid:82e8359b-c8d9-42ac-aed0-99a457364483/datastream/OBJ/view