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Updated: Jun 10, 2026

Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography

Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography

Published on: January 15, 2013

Optical ptychography: a practical implementation with useful resolution.

Andrew M Maiden¹, John M Rodenburg, Martin J Humphry

¹Department of Electrical & Electronic Engineering, University of Sheffield, Sheffield S1 3JD, UK. a.maiden@sheffield.ac.uk

|August 4, 2010

Summary

This summary is machine-generated.

This study introduces a novel lensless quantitative phase microscope. This advanced technique uses ptychography for high-resolution imaging, offering benefits over traditional methods.

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Area of Science:

Optics and Photonics
Biomedical Imaging
Microscopy

Background:

Conventional phase-contrast microscopy has limitations in quantitative analysis.
Quantitative phase microscopy (QPM) enables extraction of refractive index and thickness information.
Post-acquisition image refocusing is a key advantage of QPM.

Purpose of the Study:

To develop and present a novel lensless quantitative phase microscope.
To demonstrate a wide field of view and useful resolution in the developed microscope.
To utilize ptychography for image reconstruction in the QPM system.

Main Methods:

Implementation of a lensless optical setup for quantitative phase imaging.
Application of coherent diffractive imaging, specifically ptychography.
Acquisition and processing of diffraction patterns for image generation.

Main Results:

Successful demonstration of a lensless quantitative phase microscope.
Achieved a wide field of view and a useful resolution.
Generated quantitative phase images from diffraction data using ptychography.

Conclusions:

The developed lensless QPM system offers significant advantages over conventional techniques.
Ptychography is an effective method for reconstructing quantitative phase images in this setup.
This approach provides a powerful tool for label-free, quantitative imaging in various scientific fields.