An optical metasurface planar camera

Amir Arbabi,1 Ehsan Arbabi,1 Seyedeh Mahsa Kamali,1 Yu Horie,1 Seunghoon Han,1, 2 and Andrei Faraon1, ∗ 1T. J. Watson Laboratory of Applied Physics, California Institute of Technology, 1200 E. California Blvd., Pasadena, CA 91125, USA 2Samsung Advanced Institute of Technology, Samsung Electronics, Samsung-ro 130, Suwon-si, Gyeonggi-do 443-803, South Korea Abstract Optical metasurfaces are 2D arrays of nano-scatterers that modify optical wavefronts at subwavelength spatial resolution [1–5]. They are poised to revolutionize optical design by enabling complex low cost systems where multiple metasurfaces are lithographically stacked on top of each other and are integrated with electronics. For imaging applications, metasurface stacks can perform sophisticated image corrections and can be directly integrated with image sensors. Here, we demonstrate this concept with a miniature flat camera integrating a monolithic metasurface lens doublet corrected for monochromatic aberrations, and an image sensor. The doublet lens, which acts as a fisheye photographic objective, has an f-number of 0.9, an angle-of-view larger than 60◦×60◦, and operates at 850 nm wavelength with large transmission. The camera exhibits high image quality, which indicates the potential of this technology to produce a paradigm shift in future designs of imaging systems for microscopy, photography and computer vision.