Inverse Designed Extended Depth of Focus Meta-Optics for Broadband Imaging in the Visible

Abstract

We report an inverse-designed, high numerical aperture (~0.44), extended depth of focus (EDOF) meta-optic, which exhibit a lens-like point spread function (PSF). The EDOF meta-optic maintains a focusing efficiency comparable to that of a hyperboloid metalens throughout its depth of focus. Exploiting the extended depth of focus and computational post-processing, we demonstrate broadband imaging across the full visible spectrum using a 1 mm, f/1 meta-optic. Unlike other canonical EDOF meta-optics, characterized by phase masks such as a log-asphere or cubic function, our design exhibits a highly invariant PSF across ~290nm optical bandwidth, which leads to significantly improved image quality, as quantified by structural similarity metrics.

References in corpus (22)

• Subwavelength-thick Lenses with High Numerical Apertures and Large Efficiency Based on High Contrast Transmitarrays
• Multiwavelength Achromatic Metasurfaces by Dispersive Phase Compensation
• Achromatic Metalens in the Visible and Metalens with Reverse Chromatic Dispersion
• A broadband achromatic polarization-insensitive metalens consisting of anisotropic nanostructures
• Multiwavelength polarization insensitive lenses based on dielectric metasurfaces with meta-molecules
• Composite Functional Metasurfaces for Multispectral Achromatic Optics
• Metasurface Optics for Full-color Computational Imaging
• Controlling the sign of chromatic dispersion in diffractive optics with dielectric metasurfaces
• Neural Nano-Optics for High-quality Thin Lens Imaging
• High-NA Achromatic Metalenses by Inverse Design
• Low Contrast Dielectric Metasurface Optics
• Inverse design enables large-scale high-performance meta-optics reshaping virtual reality
• Inverse design of large-area metasurfaces
• Varifocal zoom imaging with large area focal length adjustable metalenses
• Topology Optimized Multi-layered Meta-optics
• Topology optimization of freeform large-area metasurfaces
• Inverse designed metalenses with extended depth of focus
• Active learning of deep surrogates for PDEs: Application to metasurface design
• Design and Analysis of Extended Depth of Focus Metalenses for Achromatic Computational Imaging
• Simultaneous achromatic and varifocal imaging with quartic metasurfaces in the visible
• Inverse design of optical elements based on arrays of dielectric spheres
• Sideways adiabaticity: Beyond ray optics for slowly varying metasurfaces

Cited by in corpus (6)

• Physics-enhanced deep surrogates for partial differential equations
• Trace formulation for photonic inverse design with incoherent sources
• Efficient inverse design of large-area metasurfaces for incoherent light
• Efficient perturbative framework for coupling of radiative and guided modes in nearly periodic surfaces
• Fast approximate solvers for metamaterials design in electromagnetism
• Hybrid Diffractive Optics Design via Hardware-in-the-Loop Methodology for Achromatic Extended-Depth-of-Field Imaging