Patterned glass(rolled glass) is a not-perfectly-smooth structure
with different patterns impressed on it. The depth, size and shape of the
patterns largely determine the magnitude and direction of reflection. Patterned
glass usually transmits only slightly less light than clear glass. It can be
used for a variety of applications: interior design and decorations, furniture,
windows, street furniture etc.
Patterned glass is made with a rolled glass process. The semi-molten glass is
squeezed between two metal rollers. The bottom roller is engraved with the
negative of the potter. Thickness is controlled by adjustment of the gap
between the rollers.