optical glass

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noun Optics.

any of several types of high-quality, homogeneous, color-free glass, as flint or crown glass, having specified refractive properties, used in lenses and other components of optical systems.

Nearby words

  1. optical double star,
  2. optical effects,
  3. optical fiber,
  4. optical fibre,
  5. optical flint,
  6. optical illusion,
  7. optical image,
  8. optical isomer,
  9. optical isomerism,
  10. optical mark reading

Origin of optical glass

First recorded in 1740–50

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for optical glass

optical glass

noun

any of several types of clear homogeneous glass of known refractive index used in the construction of lenses, etcSee optical flint, optical crown
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012