Color glass optical performance


   2mm, 3mm, 4mm, 5mm, 6mm colored float glass and colored ordinary flat glass have visible light transmittance not less than 25%; 8mm, 10mm, 12mm, 15mm, 19mm colored float glass visible light The transmittance is not less than 18%.  The visible light transmittance, direct sunlight transmittance, and total solar transmittance allowable deviation of colored float glass and colored ordinary flat glass shall meet the requirements of Table 1. Table 1 Optical properties of colored glass


Category Visible light (380nm~780nm) Sunlight (340nm~1800nm) Solar energy (340nm~1800nm) Transmittance% Direct transmittance% Total Transmittance% Colored float glass ±2.0 ±3.0 ±4.0 Colored ordinary flat glass ±2.5 ±3.5 ±4.5

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