- 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.
Origin of optical glass
First recorded in 1740–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for optical glass
You know, he was an optical-glass maker by profession, and the best we ever had.Reviews
You know he was an optical-glass maker by profession, and the best we have ever had.
This procedure is being repeated in the launching of an optical-glass industry; this trade has also been in Teutonic hands.The War After the War
Isaac Frederick Marcosson
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