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J Microsc. 2011 May;242(2):111-6. doi: 10.1111/j.1365-2818.2010.03457.x. Epub 2010 Nov 22.

Optical sectioning in fluorescence microscopy.

Author information

  • Department of Engineering Science, University of Oxford, Oxford, UK. tony.wilson@eng.ox.ac.uk

Abstract

We review the origins of optical sectioning in fluorescence microscopy in terms of the structure of the illumination used to generate the fluorescence within the specimen. We note that the conventional microscope using essentially uniform illumination does not exhibit optical sectioning whereas the confocal microscope using point (many spatial frequencies) illumination does. We show that the optical sectioning strength of a confocal microscope is not optimal and discuss the advantages of using a single spatial frequency for the structure of the illumination and the detection. In this case the optical sectioning strength is shown to be up to 25% narrower than in the ideal confocal case.

© 2010 The Author Journal of Microscopy © 2010 Royal Microscopical Society.

PMID:
21118248
[PubMed - indexed for MEDLINE]
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