Patterned glass is manufactured by squeezing semi-molten glass between two rollers, one of which has a surface pattern and creates a continuous, permanent impression onto the "soft" glass ribbon. The pattern is imprinted onto one surface only, while the other side remains relatively smooth. The glass is then cooled before being cut to the stock sheet size for warehousing and distribution.
Patterned glass usually transmits only slightly less light than clear glass. The more diffusing the glass, the more the directional properties of light transmitted by the glass will be diminished, and the more likely it might become a glare source, when its whole surface may appear bright.
