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Related Experiment Video

Updated: Jun 19, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

Adaptive angle-calibration for wide field-of-view on-chip phase imaging with LED array.

Sibi Chakravarthy Shanmugavel1, Shwetadwip Chowdhury1

  • 1Department of Electrical and Computer Engineering, University of Texas at Austin.

Biomedical Optics (Washington, D.C.)
|June 18, 2026
PubMed
Summary
This summary is machine-generated.

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This study presents an adaptive angle-calibration framework for mask-less on-chip phase imaging. It enables wide field-of-view phase imaging by correcting for varying illumination angles from LED arrays.

Area of Science:

  • Optics and Photonics
  • Biomedical Imaging
  • Microscopy

Background:

  • Phase imaging is crucial for visualizing transparent specimens.
  • Traditional phase imaging methods often require complex setups or specialized components.
  • On-chip imaging offers miniaturization and integration benefits.

Purpose of the Study:

  • To develop an adaptive angle-calibration framework for mask-less on-chip phase imaging.
  • To enable wide field-of-view (FOV) phase imaging using an LED array.
  • To address challenges posed by spatially-varying illumination angles in on-chip systems.

Main Methods:

  • Utilized an LED array for delivering angled illuminations.
  • Developed an adaptive angle-calibration algorithm.

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Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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Published on: August 16, 2012

Related Experiment Videos

Last Updated: Jun 19, 2026

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

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Published on: April 1, 2020

A Guide to Build a Highly Inclined Swept Tile Microscope for Extended Field-of-view Single-molecule Imaging
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08:41

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

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  • Implemented the framework for mask-less on-chip phase imaging.

    • Main Results:

    • Successfully demonstrated wide field-of-view phase imaging.
    • The adaptive framework accurately accounted for spatially-varying illumination angles.
    • Achieved high-quality phase contrast imaging without physical masks.

    Conclusions:

    • The proposed framework enhances the capabilities of on-chip phase imaging.
    • It offers a practical solution for achieving wide FOV phase imaging.
    • This technology has potential applications in various fields requiring high-resolution imaging.