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Related to aplanatic: aplanatic Gregorian, aplanatic lens


Of or relating to optical systems that correct for spherical aberration.

[From a- + Greek planāsthai, to wander; see pelə- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(General Physics) (of a lens or mirror) free from spherical aberration
[C18: from Greek aplanētos prevented from wandering, from a-1 + planētos, from planaein to wander]
ˌaplaˈnatically adv
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌæp ləˈnæt ɪk)

(of a lens) free from spherical aberration and coma.
[1785–95; aplanat- (irreg. < Greek aplánētos; see a-6, planet) + -ic]
ap`la•nat′i•cal•ly, adv.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.aplanatic - free from or corrected for spherical aberrationaplanatic - free from or corrected for spherical aberration; "an aplanatic mirror"
optics - the branch of physics that studies the physical properties of light
corrected - having something undesirable neutralized; "with glasses her corrected vision was 20:20"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
DETAILS: Celestron EdgeHD 14 aplanatic Schmidt-Cassegrain telescope and Atik 460EX monochrome CCD camera used with LRGB filters.
The distance between photosensitive surface of prefocal CMOS detector and imaging CCD detector is also D in aplanatic focal plane.
With such a wide variety of hand magnifiers available containing spherical, biconvex, aspheric or aplanatic lenses, it is important that practitioners consider the benefits of each with their visually impaired users or hobbyists in mind.
The beam is focused by an aplanatic optical lens [62] with numerical aperture NA = 0.7, focal length of 4 mm and very large filling factor.
Structure of the image field in an aplanatic system," Proceedings of the Royal Society of London A, vol.