| Issue |
EPJ Web Conf.
Volume 335, 2025
EOS Annual Meeting (EOSAM 2025)
|
|
|---|---|---|
| Article Number | 02009 | |
| Number of page(s) | 2 | |
| Section | Topical Meeting - Adaptive and Freeform Optics | |
| DOI | https://doi.org/10.1051/epjconf/202533502009 | |
| Published online | 22 September 2025 | |
https://doi.org/10.1051/epjconf/202533502009
Designing Fresnel phase elements with differentiable ray-tracing
KU Leuven, Department of Electrical Engineering (ESAT), Gebroeders de Smetstraat 1, 9000 Gent, Belgium
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Published online: 22 September 2025
Abstract
Phase elements can enhance the performance of imaging systems while reducing their size, by adding continuous phase gradients on top of the geometrical surface. Compared to their typical implementation as diffractive elements, Fresnel optics can achieve similar performance, while maintaining broadband functionality. This work introduces a methodology to optimize such Fresnel surfaces, resulting in high-performance, compact imaging designs.
© The Authors, published by EDP Sciences, 2025
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