Ultraviolet absorbing, fixed tint green or brown sunglass

摘要

Transparent green or brown glass which, at a thickness of 2 mm, transmits less than 1% of ultraviolet radiation having a wavelength of 380 nm, and which, if the fixed tint is green, are composed of TABLE the fixed green tint being defined by the area bounded by apices A,C,D,E,A of the drawing, having a purity between 18-32%, and a dominant wavelength between 554 - 564 nm, and which, if the fixed tint is brown, are composed of TABLE the fixed brown tint being defined by the area bounded by apices A',B',D',F',A' of the drawing, having a purity between 48 - 70%, and a dominant wavelength between 580-588 nm. IMAGE