Low light transmission neutral gray glass

摘要

A neutral gray soda-lime-silica glass having a low light transmission (less than 20%), which reduces the transmission of solar energy, such as the transmission of near infrared radiation (less than 14%) and, in a greater degree, the transmission of ultraviolet radiation (less than 12%), comprising the following components in weight percentage: - Fe2O3 from 1.20 to 2.0% - FeO from 18 to 28% (Reduction Percentage). - Co3O4 from 0.020 to 0.030% - Se from 0.0025 to 0.010% - CuO from 0.0050 to 0.050% - This glass avoids the use of the coloring compounds such as the nickel, chromium and manganese.