Achromatic metasurface waveguide: Pioneering a new era in AR displays

https://www.eurekalert.org/news-releases/1083668

"balance between clarity and compactness... slim diffractive waveguides, adopted by HoloLens/ Meta Orion, have chromatic dispersion, leading to image distortion... overcome combining inverse-designed metasurface (precisely control phase, amplitude, polarization) couplers with single-layer high-refractive-index waveguide... optimized metasurface coupler geometry consistently couples RGB efficiency eliminating chromatic aberration... reduced manufacturing complexity due to its single-layer structure"