企业特殊行业经营资质信息公示
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特性
· 三种尺寸可选
o Ø1/2英寸：厚度3.0 mmo Ø1英寸：厚度1.0 mm或5.0 mmo Ø2英寸：厚度12.0 mm
· 提供未镀膜的产品或者镀有以下三种宽带增透膜中的一种
o 350-700 nm(－A增透膜)o 650-1050 nm(－B增透膜)o 1050-1700 nm(－C增透膜)
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N-BK7 Specifications |
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Index of Refractiona |
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Index of Refraction at d-Line (587.6 nm)a |
1.517 |
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Sellmeier Equationa |
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Abbe Number (Vd) |
64.17 |
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Attenuation Coefficient |
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Transmission Range |
350 nm - 2.0 µm |
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Density |
2.51 g/cm3 |
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Knoop Hardness |
520 kg/mm2 |
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Young's Modulus |
82 GPa |
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Shear Modulus (Calculated Value) |
34.0 GPa |
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Bulk Modulus (Calculated Value) |
46.5 GPa |
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Poisson's Ratio |
0.206 |
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Coefficient of Thermal Expansion |
7.1 x 10-6 /°C |
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Heat Capacity |
0.858 J/(g*K) |
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Softening Point |
550 °C |
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Change in Index of Refraction with Temperature (+20/+40°C @ 1060 nm) |
2.4 x 10-6 /°C |
