Paper 14106-10
Paper 14106-10
Experimental characterization of spiral lens performance at high field angles
14 April 2026 • 16:00 - 16:20 CEST | Madrid 2/Salon 4 (Niveau/Level 0)
Abstract
When using conventional optics, image quality typically decreases as the field angle increases. In contrast, the spiral lens — recent freeform design— exhibits noticeably reduced field angle dependence. We experimentally characterize the performance of spiral lenses at high field angles using PSF analysis and encircled energy metrics. Results demonstrate controlled field aberrations and extended depth of field properties, validating the spiral lens concept for compact imaging applications.
Presenter
Yara Abi Raad
Laboratoire Photonique, Numérique et Nanosciences (France), Institut d'Optique Graduate School (France)
Yara Abi Raad is a second-year PhD student in Lasers, materials, and nanosciences at the Laboratoire photonique numérique et Nanosciences (LP2N) in Bordeaux, France. She holds a master degree in Condensed Matter Physics from the Lebanese University in Beirut. Her master's thesis focused on simulating photo detection systems using Ansys SPEOS. Her academic background combines physics with computational skills, including Python, Java, C/C++, and MATLAB. She has experience in both research and teaching, and her current PhD focuses on investigating the capability of a spiral lens to influence image formation.