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Details |
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CaF2 crystal has the following exceptional properties that makes it a very important optic crystal:
(1) High optical transmittance from the vacuum ultraviolet to the infrared spectrum region(0.11-9μm).
(2) Used for Optical prisms, lenses, wedges, windows, other optical components,and etc.
Properties:
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Density |
3.18 g/cm3 |
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Melting Point |
1357~1360 |
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Lattice Constant |
5.46 Å |
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Hardness (Knoop) |
178 [100], 160 [110]kg/mm2 |
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Dielectric Constant |
6.76 ,105HZ |
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Crystal Type |
cubic, CaF2 type structure |
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Cleavage Planes |
(111) |
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Refractive Index
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Wavelength, µm |
0.19 |
0.21 |
0.25 |
0.33 |
0.41 |
0.88 |
2.65 |
3.90 |
5.00 |
6.20 |
7.00 |
8.22 |
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Refractive Index |
1.51 |
1.49 |
1.47 |
1.45 |
1.44 |
1.43 |
1.42 |
1.41 |
1.40 |
1.38 |
1.36 |
1.34 |
CaF2 Specifications:
We produce prisms, lenses, wedges, windows,wedges, and other optical components according to customers specifications and drawings.
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Size |
Diameter up to 220mm (IR grade);
Diameter up to 160mm (UV grade); |
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Inclusion |
None visible |
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Dimension tolerance |
±0.1mm |
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Oriential tolerance |
1 arc minutes |
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Angle tolerance |
1 arc minutes |
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Scratch/Dig code |
10/5 to MIL-O-13830A |
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Parallelism |
6 arc seconds |
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Flatness |
λ/20 @ 632.8nm | | |
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