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N-SF11是符合RoHS的重火石玻璃,它在420?nm到2.3?μm波長范圍是透明的。這種玻璃比N-BK7散射更高,但其它屬性差不多。它的折射率高、阿貝數(shù)低、散射功率高,非常適合在可見光范圍內(nèi)要求高散射的應用。它在587.6 nm處的折射率是1.785。
N-SF11 Specifications |
|
Index of Refractiona |
? |
Index of Refraction at d-Line (587.6 nm)a |
1.785 |
Sellmeier Equationa |
? |
Abbe Number (Vd) |
25.68 |
Attenuation Coefficient |
? |
Transmission Range |
420 nm - 2.3 μm |
Fresnel Reflectance and Transmittance (Calculated) |
? |
Density |
3.22 g/cm3 |
Knoop Hardness |
615 kg/mm2 |
Young's Modulus |
92 GPa |
Shear Modulus (Calculated Value) |
36.6 GPa |
Bulk Modulus (Calculated Value) |
63.1 GPa |
Poisson's Ratio |
0.257 |
Coefficient of Thermal Expansion |
8.5 x 10-6?/°C |
Heat Capacity |
0.710 J/(g*K) |
Softening Point |
592 °C |
Change in Index of Refraction with? Temperature (+20/+40°C @ 1060 nm) |
0.1 x 10-6?/°C |
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