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The optimization criteria for resolution improvement in a lens-free on-chip digital holographic microscope
Author(s): Jialin Zhang; Qian Chen; Jiasong Sun; Chao Zuo
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Paper Abstract

The typical lens-free on-chip digital holographic microscopy (LFOCDHM) as a modern imaging technique produce compromised imaging resolution that far below the ideal coherent diffraction limit. At least five major factors may contribute to this limitation, namely, the sample-to-sensor distance, spatial and temporal coherence of the illumination, finite pixel size of the sensor, and finite extent of the image sub-field-of-view used for the reconstruction. In this paper, we derive five transfer function models that account for all these physical effects on the imaging resolution of LFOCDHM. The theoretical resolution limit of a given LFOCDHM system can also be predicted. Besides this, we provide a useful guide to the selection of different system parameters for the optimization of the imaging resolution when designing a new LFOCDHM system.

Paper Details

Date Published: 16 October 2019
PDF: 6 pages
Proc. SPIE 11205, Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019), 112050C (16 October 2019); doi: 10.1117/12.2548538
Show Author Affiliations
Jialin Zhang, Nanjing Univ. of Science and Technology (China)
Qian Chen, Nanjing Univ. of Science and Technology (China)
Jiasong Sun, Nanjing Univ. of Science and Technology (China)
Chao Zuo, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 11205:
Seventh International Conference on Optical and Photonic Engineering (icOPEN 2019)
Anand Asundi; Motoharu Fujigaki; Huimin Xie; Qican Zhang; Song Zhang; Jianguo Zhu; Qian Kemao, Editor(s)

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