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Proceedings Paper

Point spread functions with extended depth of focus
Author(s): Tony Wilson; Mark A. A. Neil; F. Massoumian
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Paper Abstract

The use of an annular pupil plane filter may be used to increase the depth of focus of an objective lens without significant deterioration of the lateral resolution. However this approach is very inefficient since most of the illumination light is blocked by the annular filter. We describe a method which uses a diffractive optical element to increase significantly the depth of focus but with dramatically increased light efficiency.

Paper Details

Date Published: 15 May 2002
PDF: 4 pages
Proc. SPIE 4621, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing IX, (15 May 2002); doi: 10.1117/12.467842
Show Author Affiliations
Tony Wilson, Univ. of Oxford (United Kingdom)
Mark A. A. Neil, Univ. of Oxford (United Kingdom)
F. Massoumian, Univ. of Oxford (United Kingdom)


Published in SPIE Proceedings Vol. 4621:
Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing IX
Jose-Angel Conchello; Carol J. Cogswell; Tony Wilson, Editor(s)

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