Specifications:
| Materials | Hot-pressed MgF2 | Diameter Range | ~ 280mm |
| Thickness Tolerance | +/-0.2mm (Optional:+/-0.1mm and +/-0.05mm) | Surface Quality | 60/40 S/D |
| Fringes (N) | customized | Irregularity (delta N) | customized |
| Chamfer | 0.1~0.3mmx45degree | Coating | Uncoated(Note: coating is unnecessary for its high transmission) |
Physical and Optical Properties:
| Transmission Range | 0.7 to 9μm | Knoop Hardness | >539kg/mm2 |
| Fracture Strength | 96MPa | Compression Strength | >300MPa |
| Bending Strength | >90MPa | Density | >3.17g/cm3 |
| Thermal Expansion | <1.3x10-5 K-1(25-300℃) | Refractive Index | 1.3812+/-0.005 (at 0.5893μm) |
| Transmittance | >85%(2-7.5μm) |
Shanghai North Optics offers Hot-pressed magnesium fluoride or MgF2 domes optimized for missiles and launch tubes. Hot-pressed Magnesium Fluoride (MgF2) is a favorable option as the IR material to manufacture MWIR domes, with its dominating prevalence attributing to high infrared transmittance at the range of 2-7.5μm, small thermal expansion coefficient, good mechanical properties, and low fabrication cost.
Transmission of Hot-pressed MgF2 Materials
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