Products >> calcium fluoride
Calcium fluoride is essential optical crystal with excellent hardness and strong resistance for thermal fluctuation. Calcium fluoride is widely used in scientific research and RND department, the application for calcium fluoride is astronomical observation and other optical device.
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Material |
GH-194 |
GH-247 |
GH-UV |
GH-IR |
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Dimension |
D350*80mm |
D520 *60mm |
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Transmission per 10mm thickness |
>99.9 |
>99.9 |
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Stree briefringence PV@ 633nm[nm/cm] |
1-20 |
1-40 |
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Refractive index homogeneity PV@633nm [ppm] |
1-15 |
3-18 |
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Transmission range, microns |
0.13-10 |
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Transmittance at 0.193-7.87um |
>95% |
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Refection loss |
5.4% |
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absorption |
7.8X10-4 |
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Crystal structure |
Cubic |
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Cleavage planes, direction |
<111> |
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Metaling point |
1420 degree |
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Thermal expansion [10-6/k] |
18.5@273k |
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Thermal conductivity [w/(mxk)] |
9.17 @293k |
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Specific heat capacity [j/(kgXk)] |
854 |
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