Lensless Imaging via Blind Ptychography Modulation and Wavefront Separation

Author:

Xu Cheng12,Pang Hui2,Cao Axiu2,Deng Qiling2,Hu Song2,Yang Huajun1

Affiliation:

1. School of Physics, University of Electronic Science and Technology of China, Chengdu 610054, China

2. Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China

Abstract

A novel lensless imaging approach based on ptychography and wavefront separation is proposed in this paper, which was characterized by rapid convergence and high-quality imaging. In this method, an amplitude modulator was inserted between the light source and the sample for light wave modulation. By laterally translating this unknown modulator to different positions, we acquired a sequence of modulated intensity images for quantitative object recovery. In addition, to effectively separate the object and modulator wavefront, a couple of diffraction patterns without modulation were recorded. Optical experiments were performed to verify the feasibility of our approach by testing a resolution plate, a phase object, and an agaricus cell.

Funder

National Natural Science Foundation of China

Natural Science Foundation of Sichuan Province

Publisher

MDPI AG

Subject

Radiology, Nuclear Medicine and imaging,Instrumentation,Atomic and Molecular Physics, and Optics

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