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| Nickel sulfate hexahydrate Potassium nickel hexahydrate |
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NSH （Nickel sulfate hexahydate ）被用来作为一种制作商业紫外线过滤器的材料，KNSH （Potassium nickel sulfate hexahydrate）是一种新型晶体，同NSH一样具有更好的热稳定性 |
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NSH crystals for UV filters |
Optical spectra of NSH crystal |
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KNSH crystals for UV filters |
Optical spectra of KNSH crystal |
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晶体结构 |
Tetragonal |
Monoclinic |
晶格参数 |
a =6.782 ?
b= 6.782 ?
c=18.274 ? |
a =6.125 ?
b= 12.159 ?
c=8.980 ? |
密度 |
2.08 g/cm3 |
2.25 g/cm3 |
光学均匀性 |
dn ? 10-6/cm |
dn ? 10-6/cm |
透明区域 |
200-330nm |
220-330nm |
潮解度 |
--- |
Low |
热稳定性 |
<70°C |
<95°C |
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规格说明
波前畸变 |
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尺寸公差 |
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通光孔径 |
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平行度 |
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光洁度 |
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平行度 |
better than 20 arc seconds
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垂直度 |
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| *Ø25mm,Ø50mm filters are mounted between sealed glass windows |
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