Custom High Precision IR Optics and Lidar Polygon Mirrors
CaF2 Window
Calcium Fluoride is an optical grade glass which has an extensive transmision range from UV, visiable and IR spectrum. CaF2 has a high transmittance especially from 200nm to 7μm. The transmittance of uncoated caf2 window can up to 94% in visible range due to its low absorption and low index of refraction. CaF2 is widely used in UV and IR applications .
Wuhan Especial Optic offers high precision and quality caf2 windows with cost-benefit price as well as stable supply ability. Dimensions and shape depends on your project. Meanwhile, experienced engineer could advise you professional advices according to your applications, drawing is aslo available.
Feel free to write to us at sales@wheo.cn or minnie@wheo.cn for a reasonable quote sheet.
| CaF2 window specifications | ||
Standard Precision | High Precision | |
Dimension | 5-150mm +0/-0.2mm | 3-200mm +0/-0.2mm |
Thickness | 1-50mm +/-0.1mm | 1-50mm +/-0.05mm |
Parallelism | 3 arcmin | 10 arcsec |
Surface Quality | 60/40 | 20/10 |
Flatness | 2 Lambda @632.8nm | Lambda/8 @632.8nm |
Clear Aperture | >90% | >95% |
Chamfer | Protected <0.5mmx45deg | Protected <0.5mmx45deg |
| Optical Materials Selection Guides | |
| Work Wavelength Range | Substrate Materials |
| 180 nm - 8.0 μm | Calcium Fluoride (CaF2) |
| 185 nm - 2.1 μm | UV Fused Silica (JGS1) |
| 200 nm - 5.0 μm | Sapphire (Al2O3) |
| 200 nm - 6.0 μm | Magnesium Fluoride (MgF2) |
| 250 nm - 26 μm | Potassium Bromide (KBr) |
| 350 nm - 2.0 μm | N-BK7 (equivalent to H-K9L) |
| 600 nm - 16 μm | Zinc Selenide (ZnSe) |
| 1.2 μm - 8.0 μm | Silicon (Si) |
| 1.9 μm - 16 μm | Germanium (Ge) |
| 150nm - 12 μm | Barium Fluoride (BaF2) |
| 350nm - 16 μm | Zinc Sulfide (ZnS) |
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