Patent ID: 6927186

Claim:
A glass sheet comprising: a base glass portion comprising: Ingredient Wt. % SiO 2 67-75% Na 2 O 10-20% CaO 5-15% MgO 0-8% Al 2 O 3 0-5% K 2 O 0-5% BaO 0-2% and a colorant portion comprising: total iron: 0.1 to 1.0% cobalt oxide: 0 to 1,000 ppm sulfides (S 2− ): 0.0001 to 0.10% wherein the glass sheet has a visible transmission (Lta) no greater than 25%, an ultraviolet (UV) transmission no greater than 20%, and an infrared (IR) transmission no greater than 25%.