optical glass

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.

Origin of optical glass

First recorded in 1740–50

Words nearby optical glass

optical double star, optical effects, optical fiber, optical fibre, optical flint, optical glass, optical illusion, optical image, optical isomer, optical isomerism, optical mark reading

Example sentences from the Web for optical glass

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, etc See optical flint, optical crown