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Optics for Engineers
book

Optics for Engineers

by Charles A. DiMarzio
August 2011
Intermediate to advanced content levelIntermediate to advanced
564 pages
20h 45m
English
CRC Press
Content preview from Optics for Engineers
ABERRATIONS 131
Current trends in microscopy are toward ever-increasing ranges of wavelengths with some
techniques spanning a factor of two to three in wavelength. In general, a microscope objective
will be well corrected for Seidel aberrations across wavelengths. Dispersion has a small effect
on these corrections. However, a microscope corrected for chromatic aberrations in the visible
may not be well corrected in the infrared or ultraviolet. For laser illumination at a single wave-
length not too far from the band over which the lens was designed, the major effect will be
a shift in focus. Comparison of sequential images taken at different wavelengths may require
an adjustment of the position of the objective to correct for this shift, and an
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Publisher Resources

ISBN: 9781439807255