Patent ID: 8187988

Claim:
A blue glass composition of silica-soda-lime type, comprising the coloring agents below in a content varying within the following limits, by weight: Fe 2 O 3 (total iron) >0.45 to 0.51% FeO >0.15% CoO 15 to 40 ppm Cr 2 O 3 10 to 300 ppm CuO 0 to 400 ppm the glass exhibiting a redox factor of less than or equal to 0.35, a dominant wavelength λ D of between 485 and 489 nm, an excitation purity of less than 13%, a light transmission LT A of greater than 70%, and a selectivity of greater than 1.3 at a thickness on the order of 3.15 mm.