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. Author manuscript; available in PMC: 2020 Oct 30.
Published in final edited form as: Optica. 2019 May 10;6(5):647–661. doi: 10.1364/optica.6.000647

Fig. 1.

Fig. 1.

Optical architecture of CACAO-FB. The CACAO-FB system consists of three tube lenses (L1, L2, and L3) to relay the image from the target system for analysis. The target system consists of an unknown lens and an unknown sample with spatially incoherent field. The CACAO-FB system has access to the conjugate plane of the target system’s pupil, which can be arbitrarily modulated with binary patterns using a spatial light modulator. The images captured by the CACAO-FB system are intensity only. f0, f1, f2, and f3 are the focal lengths of the unknown lens, L1, L2, and L3, respectively. d is an arbitrary distance smaller than f3.