achromatic lens

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achromatic lens

n.
A combination of lenses made of different glass, used to produce images free of chromatic aberrations.
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.

ach′romat′ic lens′


n.
a system of two or more lenses made of different substances so that different colors are focused at the same point, eliminating chromatic aberration.
[1860–65]
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.achromatic lens - a compound lens system that forms an image free from chromatic aberrationachromatic lens - a compound lens system that forms an image free from chromatic aberration
compound lens - a lens system consisting of two or more lenses on the same axis
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References in periodicals archive ?
They attach to a variety of microscope systems and feature designs made up of an achromatic doublet and a single plano-convex lens, where both convex surfaces face one another.
The heart of the instrument is a reflective grating positioned behind an oversized achromatic doublet. Its highly reflective chromium surface and transfer mirror enable you to directly track the target star through the guide port with your autoguiding camera.
An example of forward and reversed ray tracing model for an Edmund Optics f = 20 mm achromatic doublet is shown in Figure 2.
The most common type is the achromatic doublet based on two individual lenses, one crown glass lens element and a flint glass lens element, joined together, usually one positive and the other negative, so the aberrations and dispersion effects of one lens are compensated by those of the other 1].