Crown glass
Encyclopedia
Crown glass is either of two kinds of glass:
- Crown glass (window)Crown glass (window)Crown glass was an early type of window glass. In this process, glass was blown into a "crown" or hollow globe. This was then transferred from the blowpipe to a pontil and then flattened by reheating and spinning out the bowl-shaped piece of glass into a flat disk by centrifugal force, up to 5 or...
was a type of hand-blown window glass. - Crown glass (optics)Crown glass (optics)Crown glass is type of optical glass used in lenses and other optical components. It has relatively low refractive index and low dispersion...
is a type of optical glass used in lenses.