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Super-resolution Fluorescence Microscopy

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

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Related Experiment Video

Updated: Jun 12, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

Multi-adaptive super-resolving pupil filter for sub-diffraction limited focusing and imaging.

Qianyi Cai, Zhiming Guo, Jianan Li

|June 11, 2026

Summary

This summary is machine-generated.

This study introduces a novel multi-adaptive super-resolving pupil filter. This filter achieves sub-diffraction-limited resolution across variable focal lengths, enhancing optical imaging systems.

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Last Updated: Jun 12, 2026

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

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Published on: September 8, 2017

Area of Science:

Optics and Photonics
Nanotechnology

Background:

Classical diffraction limits restrict optical resolution.
Existing super-resolving pupil filters are system-specific and lack adaptability.
Demand for enhanced resolution in variable-focus optical systems is growing.

Purpose of the Study:

To develop a multi-adaptive super-resolving pupil filter.
To achieve sub-diffraction-limited performance across a range of focal lengths.
To enable super-resolution in zoom optical systems.

Main Methods:

Designed a binary phase pupil filter with concentric annular belts.
Employed a two-step optimization algorithm for filter design.
Fabricated the filter using ultraviolet optical lithography.

Main Results:

Demonstrated consistent sub-diffraction-limited focal spots with variable focal length lenses (50-150 mm).
Verified performance at a 633 nm wavelength through numerical simulations and experiments.
Confirmed resolution enhancement in an integrated optical imaging system.

Conclusions:

The proposed multi-adaptive pupil filter overcomes limitations of fixed-focus designs.
It offers consistent super-resolution performance across variable focal lengths.
This technology facilitates practical development of super-resolution zoom microscopy and telescopes.