# Achromatic imaging systems with flat lenses enabled by deep learning

arXiv: https://arxiv.org/abs/2308.12776 · HTML: https://mlsanity.com/paper/2308.12776/

## Key facts

- Cited by 2 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 24 Aug 2023.

## Built on by (most cited first, 2 of 2)

- [Integration of Programmable Diffraction with Digital Neural Networks](https://mlsanity.com/paper/2406.10688/) (2024)
- [DCA-LUT: Deep Chromatic Alignment with 5D LUT for Purple Fringing Removal](https://mlsanity.com/paper/2511.12066/) (2025)

## Abstract (arXiv)

Motivated by their great potential to reduce the size, cost and weight, flat lenses, a category that includes diffractive lenses and metalenses, are rapidly emerging as key components with the potential to replace the traditional refractive optical elements in modern optical systems. Yet, the inherently strong chromatic aberration of these flat lenses is significantly impairing their performance in systems based on polychromatic illumination or passive ambient light illumination, stalling their widespread implementation. Hereby, we provide a promising solution and demonstrate high quality imaging based on flat lenses over the entire visible spectrum. Our approach is based on creating a novel dataset of color outdoor images taken with our flat lens and using this dataset to train a deep-learning model for chromatic aberrations correction. Based on this approach we show unprecedented imaging results not only in terms of qualitative measures but also in the quantitative terms of the PSNR and SSIM scores of the reconstructed images. The results pave the way for the implementation of flat lenses in advanced polychromatic imaging systems.