World's first mass production of metalenses for visible wavelengths

https://techxplore.com/news/2023-05-world-mass-production-metalenses-visible.html

"Photolithography uses light to pattern substrate, and nanoimprint lithography, and stamp nano-sized patterns  onto substrate... deep-ultraviolet ArF photolithography to create 12-inch master stamp... metalenses 1 cm diameter at high speed... 90% efficiency coating lens with 20 nm layer titanium dioxide... lightweight virtual reality (VR) devices capable of displaying images in red, green, and blue"

Related: Enhancing image quality with broadband achromatic and polarization-insensitive metalenses

https://phys.org/news/2023-07-image-quality-broadband-achromatic-polarization-insensitive.html