Ultra-thin near infrared camera enabled by a flat multi-level diffractive lens.

Authors :: Banerji S
Meem M
Majumder A
Vasquez Guevara F
Sensale-Rodriguez B
Menon R
Source :: Optics letters [Opt Lett] 2019 Nov 15; Vol. 44 (22), pp. 5450-5452.
Publication Year :: 2019
Abstract: We experimentally demonstrate a ∼1-mm-thick near infrared camera comprised of a multi-level diffractive lens coupled with a conventional monochrome image sensor. We performed careful measurements of the point-spread function, the modulation transfer function, focusing efficiency, aberrations, and the field of view of the camera.