• synonyms

Huygens eyepiece

noun Optics.
  1. an eyepiece consisting of two plano-convex lenses, the plane sides of which both face the eye.
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Origin of Huygens eyepiece

First recorded in 1830–40; named after C. Huygens
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018