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Barium fluoride (BaF2) has an optical transmittance of nearly 90% in the 200-9500nm spectral range. It is commonly used in lenses, beam splitters, filters, prisms, and windows in cryogenic imaging systems, infrared temperature measurement, aerospace optical systems, and laser optical systems. This material has a certain water solubility and is suitable for use in dry environments.
Diameter (mm) | Thickness (mm) | Coating requirements | Diameter (mm) | Thickness (mm) |
10 | 1 | AR/AR 3-5μm AR/AR 8-12μm | 75 | 3 |
12.5 | 1 | 75 | 5 | |
20 | 2 | 76.2 | 6 | |
25 | 3 | 80 | 8 | |
30 | 3 | 90 | 10 | |
38.1 | 3 | 100 | 10 | |
40 | 4 | 150 | 15 | |
50 | 3 | 180 | 18 | |
50.8 | 3 | 200 | 20 | |
63.5 | 5 | 300 | 35 |
Technical requirements | Commercial Grade | High precision grade |
Size range | 1-600mm | 2-600mm |
Diameter tolerance | Soil 0.1mm | Soil 0.01mm |
Thickness tolerance | Soil 0.1mm | Soil 0.01mm |
Parallel deviation | ±3´ | ±2´´ |
Surface quality | 60-40 | 20-10 |
Surface accuracy | 1.0λ | λ/20 |
Coating | 10.6μm AR/AR, <2% per Surface | |
Chamfer | 0.1-0.5mm*45° | |
Material | Barium fluoride | |
Barium fluoride (BaF2) has an optical transmittance of nearly 90% in the 200-9500nm spectral range. It is commonly used in lenses, beam splitters, filters, prisms, and windows in cryogenic imaging systems, infrared temperature measurement, aerospace optical systems, and laser optical systems. This material has a certain water solubility and is suitable for use in dry environments.
Diameter (mm) | Thickness (mm) | Coating requirements | Diameter (mm) | Thickness (mm) |
10 | 1 | AR/AR 3-5μm AR/AR 8-12μm | 75 | 3 |
12.5 | 1 | 75 | 5 | |
20 | 2 | 76.2 | 6 | |
25 | 3 | 80 | 8 | |
30 | 3 | 90 | 10 | |
38.1 | 3 | 100 | 10 | |
40 | 4 | 150 | 15 | |
50 | 3 | 180 | 18 | |
50.8 | 3 | 200 | 20 | |
63.5 | 5 | 300 | 35 |
Technical requirements | Commercial Grade | High precision grade |
Size range | 1-600mm | 2-600mm |
Diameter tolerance | Soil 0.1mm | Soil 0.01mm |
Thickness tolerance | Soil 0.1mm | Soil 0.01mm |
Parallel deviation | ±3´ | ±2´´ |
Surface quality | 60-40 | 20-10 |
Surface accuracy | 1.0λ | λ/20 |
Coating | 10.6μm AR/AR, <2% per Surface | |
Chamfer | 0.1-0.5mm*45° | |
Material | Barium fluoride | |
