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Related Experiment Video

Updated: Jan 15, 2026

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution

Published on: August 16, 2012

LensPlus: a high space-bandwidth optical imaging technique.

Neha Goswami^1,2, Mark A Anastasio^1,3

¹Department of Bioengineering, University of Illinois Urbana-Champaign, Illinois, 61801, USA.

Biomedical Optics Express

|January 14, 2026

Summary

This summary is machine-generated.

LensPlus, a deep learning framework, enhances the space-bandwidth product (SBP) in quantitative phase imaging (QPI) by recovering lost high-frequency details. This enables simultaneous high-resolution and large field-of-view imaging without hardware changes.

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Last Updated: Jan 15, 2026

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Area of Science:

Optical imaging
Computational imaging
Deep learning applications

Background:

Space-bandwidth product (SBP) limits simultaneous high-resolution and large field-of-view imaging.
High-NA objectives offer resolution but limited coverage; low-NA objectives offer coverage but limited resolution.

Purpose of the Study:

Introduce LensPlus, a deep learning framework to enhance SBP in quantitative phase imaging (QPI).
Achieve high-resolution and large field-of-view imaging without hardware modifications.

Main Methods:

Developed a deep learning framework (LensPlus) trained on paired low-NA and high-NA QPI datasets.
LensPlus recovers high-frequency features from low-NA images to emulate high-NA performance.
Employed a non-generative model to ensure quantitative fidelity and minimize image hallucinations.

Main Results:

LensPlus transformed 10x/0.3 NA images to quality comparable to 40x/0.95 NA.
Achieved a 2D-SBP improvement of approximately 3.5x.
Demonstrated quantitative fidelity through spectral analysis.

Conclusions:

LensPlus effectively increases SBP by bridging the resolution gap while preserving field of view.
The framework is broadly applicable to various lens-based imaging modalities.
Enables practical wide-field, high-resolution imaging for demanding applications.