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. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: IEEE Trans Pattern Anal Mach Intell. 2020 Apr 23;42(7):1618–1629. doi: 10.1109/TPAMI.2020.2987489

Fig. 1.

Fig. 1.

[Top] Non-lensing optics provides a way to achieve thin devices at low-cost. Among the various non-lensing optics, phase-masks are veratile in their designs and can produce a larger space of Point-spread-functions (PSF). [Bottom] PSFs from various optics are shown. Lensing optics have a small PSF support while non-lensing optics display large PSFs. The non-lensing optics’ PSFs were experimentally camptured.