Patent ID: 7435696

Claim:
A glass composition with high visible light transmission and low ultraviolet light transmission having a base glass composition, comprising, in weight percentage: from 70 to 75% of SiO 2 ; from 10 to 15% of Na 2 O; from 5 to 10% of CaO; from 0 to 5% of MgO; from 0.0 to 3% K 2 O; from 0.1 to 1.0% Al 2 O 3 % and compounds consisting of from less than 0.03 wt % of ferric oxide, from 0.05 to 1 wt % of titanium oxide and from 0 to 0.6 wt % of cerium oxide, the glass having greater than 87% in visible luminous transmittance; a UV light transmission less than 60% and, a solar direct transmittance no more than 90%.