Dielectric metalens for miniaturized imaging systems: progress and challenges

Abstract Lightweight, miniaturized optical imaging systems are vastly anticipated in these fields of aerospace exploration, industrial vision, consumer electronics, and medical imaging. However, conventional optical techniques are intricate to downscale as refractive lenses mostly rely on phase accumulation. Metalens, composed of subwavelength nanostructures that locally control light waves, offers a disruptive path for small-scale imaging systems. Recent advances in the design and nanofabrication of dielectric metalenses have led to some high-performance practical optical systems. This review outlines the exciting developments in the aforementioned area whilst highlighting the challenges of using dielectric…

• NN
  National Natural Science Foundation of China

  Awards: 52005175, 5211101255, 12104182, 62105120
• BA
  Basic and Applied Basic Research Foundation of Guangdong Province

  Award: 2020A1515110971