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optical glass Dictionary Terms

crown glass
One of the two principal types of optical glass, the other being flint glass. Crown glass is harder than flint glass, and...
strain
In optics, the mechanical tension, compression or shear in optical glass due to internal stress caused by improper cooling...
flint glass
One of the two major types of optical glass, the other being crown glass. Flint glass is softer than crown glass, has a...
cord
A threadlike inclusion within a blank of optical glass. Rarely found in quality optical materials.
striae
An imperfection in optical glass consisting of a distinct streak of transparent material having a slightly different...
rare-earth type glass
Optical glasses containing the oxides of rare earths such as lanthanum to impart a very high refractive index combined with...
compound lens
A lens composed of two or more separate elements of optical glass that may or may not be cemented together. The surfaces of...
free-abrasive machining
The process whereby a rotating wheel carries grains of an abrasive, suspended in a vehicle, across the surface of the...
glass-melting furnace
A furnace used to heat glass materials. It may be a small laboratory-type furnace for small-scale experiments or large...
fluoride glass
Optical glass containing zirconium fluoride that results in special characteristics such as improved transmission.
incoherent bundle
A bundle of filaments of optical glass or other transparent materials that transmit only light, not optical images. The...
fluor crown glass
Optical glass that possesses a refractive index equal to or less than 1.5, and an Abbe number that ranges from 62 to about...
achromat
An achromat, in the context of optics, refers to a type of lens or lens system designed to reduce chromatic aberration....
optical glass
Optical glass refers to a type of glass specifically engineered and manufactured for use in optical components and systems,...

(14 results found)

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