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achromatic lens

noun Optics.
  1. a system of two or more lenses that is substantially free from chromatic aberration and in which the lenses are made of different substances so that the focal length of the system is the same for two or three wavelengths of light.
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Origin of achromatic lens

probably earlier than 1860–65
Also called achromat.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

achromatic lens in Medicine

achromatic lens

n.
  1. A combination of lenses made of different glass, used to produce images free of chromatic aberrations.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.