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Related Experiment Video

Updated: Apr 28, 2026

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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Adaptive coded-aperture imaging with subpixel superresolution.

Chris Slinger1, Helen Bennett, Gavin Dyer

  • 1Malvern Innovations, The Elms Courtyard, Bromesberrow HR8 1RZ, UK. chris.slinger@malverninnovations.com

Optics Letters
|March 2, 2012
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Summary
This summary is machine-generated.

We developed an adaptive coded-aperture imager for midwave infrared imaging. This system achieves superresolution, surpassing detector limits by combining multiple coded frames for enhanced imaging detail.

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Area of Science:

  • Optics and Imaging Technology
  • Infrared Spectroscopy
  • Superresolution Microscopy

Background:

  • Traditional imaging systems are limited by detector pixel size.
  • Achieving higher resolution often requires complex or bulky optics.
  • Midwave infrared (MWIR) imaging presents unique challenges for high-resolution systems.

Purpose of the Study:

  • To introduce a novel adaptive coded-aperture imager for MWIR applications.
  • To demonstrate the system's capability for sub-pixel resolution imaging.
  • To validate the superresolution performance in both laboratory and outdoor settings.

Main Methods:

  • The system utilizes an adaptive coded-aperture mask.
  • It incorporates a set of optical components.
  • Data is captured using a 4k×4k focal plane array (FPA).
  • Multiple frames with varying codes are combined to reconstruct a superresolved image.

Main Results:

  • The coded-aperture imager demonstrated superresolution capabilities.
  • Image resolution exceeding the detector's pixel pitch was achieved.
  • The highest demonstrated resolution was one-half of the FPA pixel pitch.
  • Successful performance was validated in laboratory and outdoor environments.

Conclusions:

  • Adaptive coded-aperture imaging offers a viable path to overcome detector resolution limits in MWIR.
  • The developed system provides a compact and effective solution for high-resolution infrared imaging.
  • Further advancements in coded-aperture techniques can significantly enhance imaging performance.