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Near Simultaneous Laser Scanning Confocal and Atomic Force Microscopy (Conpokal) on Live Cells

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Published on: August 11, 2020

Improvement in resolution by nearly confocal microscopy.

I J Cox¹, C J Sheppard, T Wilson

¹University of Oxford, Department of Engineering Science, Parks Road, Oxford OX1 3PJ, UK.

|April 8, 2010

Summary

Confocal microscopy improves resolution. Offsetting the detector pinhole further enhances resolution and enables simple dark-field imaging using Airy disk rings.

Area of Science:

Optical microscopy
Confocal microscopy
Image resolution

Background:

Conventional confocal microscopes offer improved resolution compared to standard microscopes.
Further enhancements in image resolution are achievable through modifications to existing setups.

Purpose of the Study:

To investigate methods for improving resolution in confocal microscopy.
To explore the effects of detector pinhole offset on image resolution and imaging modes.

Main Methods:

Utilizing a confocal microscope setup.
Offsetting the detector pinhole relative to the Airy disk.
Analyzing image formation under offset pinhole conditions.

Main Results:

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An improved resolution was observed with the conventional confocal microscope.

Offsetting the detector pinhole led to nearly confocal operation and enhanced resolution.

Placing the pinhole over the first dark ring of the Airy disk created dark-field conditions.

Conclusions:

Confocal microscopy provides enhanced resolution.
Detector pinhole offset is a simple yet effective method to further improve resolution and achieve dark-field imaging.