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Full-aperture extended-depth oblique plane microscopy through dynamic remote focusing.

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  • 1Politecnico di Milano, Dipartimento di Fisica, Milano, Italy.

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|March 22, 2024
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Summary

This study presents a novel oblique plane microscopy (OPM) method that eliminates the need for a reprojection setup, enabling full objective aperture utilization. This approach enhances resolution and efficiency for broader OPM adoption.

Keywords:
deformable lensesfluorescencelight-sheetmicroscopyoblique plane microscopyremote focusing

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Area of Science:

  • Microscopy
  • Optical Imaging
  • Biotechnology

Background:

  • Conventional oblique plane microscopy (OPM) systems utilize reprojection, which limits the effective aperture.
  • This aperture limitation reduces imaging efficiency and resolution.
  • Achieving large apertures typically requires specialized, custom optics.

Purpose of the Study:

  • To demonstrate a feasible OPM system that bypasses conventional reprojection.
  • To maintain the full aperture of the primary objective lens.
  • To improve OPM performance and accessibility.

Main Methods:

  • Implemented a deformable lens-based remote focusing system.
  • Synchronized the deformable lens with the rolling shutter of a CMOS detector.
  • Replaced the traditional reprojection setup with this novel remote focusing approach.

Main Results:

  • The system successfully imaged microbeads, prepared slides, and zebrafish embryos.
  • Achieved superior resolution and pixel throughput compared to OPM with cropped apertures.
  • Performance was comparable to OPM systems using custom optical components.

Conclusions:

  • Presented an easily reproducible OPM imaging method.
  • Eliminated the conventional reprojection setup in OPM.
  • Enabled full exploitation of the objective's aperture for improved imaging.