2020/01/17 by Monjurul Meem, Meem, Monjurul, Sourangsu Banerji +9 · 1 citation
Materials Science · Physics and Astronomy · #FOS: Electrical engineering #FOS: Physical sciences #Image and Video Processing (eess.IV) #Metamaterials and Metasurfaces Applications #Optical Coatings and Gratings #Optics (physics.optics) #Photonic Crystals and Applications #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2001.06523
openalex publication_date 2020/01/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Flat lenses enable thinner, lighter, and simpler imaging systems. However, large-area and high-NA flat lenses have been elusive due to computational and fabrication challenges. Here, we applied inverse design to create a multi-level diffractive lens (MDL) with thickness <1.35μm, diameter of 4.13mm, NA=0.9 at wavelength of 850nm. Since the MDL is created in polymer, it can be cost-effectively replicated via imprint lithography.