anastigmat


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an·as·tig·mat

 (ăn-ăs′tĭg-măt′)
n.
An anastigmatic lens.
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.

anastigmat

(æˈnæstɪɡˌmæt; ˌænəˈstɪɡmæt)
n
(General Physics) a lens or system of lenses designed to be free of astigmatism
[C19 from an- + astigmatic]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

an•as•tig•mat

(əˈnæs tɪgˌmæt, ˌæn əˈstɪg mæt)

n.
an anastigmatic lens.
[1885–90; < German, anastigmatisch anastigmatic]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.anastigmat - compound lens or lens system designed to be free of astigmatism and able to form approximately point imagesanastigmat - compound lens or lens system designed to be free of astigmatism and able to form approximately point images
lens, lens system, lense - a transparent optical device used to converge or diverge transmitted light and to form images
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
We inherited much of his equipment: a wooden Thornton Pickard half-plate field camera with double book form dark slides and rapid rectilinear lenses (anastigmat had not yet been introduced) and a half plate enlarger lit by a paraffin oil lamp.
Volume I, subtitled "Basic Design Theory and Its Historical Development," is concerned with the optical design of virtually every conceivable reflecting telescope, from the simplest Newtonian to the most elaborate anastigmat containing numerous mirrors.