期刊
OPTICS EXPRESS
卷 12, 期 17, 页码 4150-4156出版社
OPTICAL SOC AMER
DOI: 10.1364/OPEX.12.004150
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The use of pupil-plane filters in microscopes has been proposed as a method of producing superresolution. Here it is shown that pupil-plane filters cannot increase the support of the transfer function for a large class of optical systems, implying that resolution cannot be improved solely by adding pupil-plane filters to an instrument. However, pupil filters can improve signal-to-noise performance and modify transfer-function zero crossing positions, as demonstrated through a confocal fluorescence example. (C) 2004 Optical Society of America.
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