Colorless Optical Glass B270

Colorless optical glass B270 is a high transmittance, low iron content optical glass material produced by Schott Group in Germany, widely used in the manufacturing of precision optical components. Colorless Optical Glass ,Quartz Glass,Colorless Optical GlassK9（BK7),The following is a detailed explanation of its key features and applications: 1. Basic characteristics Optical performance: The refractive index (nd) is 1.5230, the dispersion coefficient (μ d) is 58.3, the Abbe number is high, and the color difference correction ability is strong. Excellent transmittance: The transmittance reaches 91.7% at a thickness of 2mm, 91.6% at 4mm, and 91.0% at 15mm. High transmittance is maintained in both ultraviolet and infrared bands, with low spontaneous fluorescence, making it suitable for broad-spectrum applications. Physical and chemical properties: Density 2.55 g/cm ³, Knoop hardness 542 kg/mm ², high mechanical strength. The thermal expansion coefficient is 9.4 × 10 ⁻⁶/K (20-300 ℃), and…