Hot-pressed MgF₂ Domes
Flexural Strength: Greater than 20,000 psi, ensures robustness and reliability under mechanical stress, crucial for defense and aerospace applications.
Knoop Hardness: Exceeds 1350 kg/mm², provides excellent resistance to scratching and abrasion, ensuring longevity in harsh environments.
Optical Transmission: High transmission within the 2μm to 7.5μm range, ideal for Mid-Wave Infrared (MWIR) thermal imaging, providing clear and high-quality imagery.
Applications:
- Defense: Used in missile domes, reconnaissance systems, and infrared sensors.
- Security: Applied in high-end thermal cameras and night vision equipment for surveillance.
- Aerospace: Utilized in spacecraft sensors and aerospace optics, where durability and thermal stability are critical.
Hot-pressed Magnesium Fluoride (MgF₂) domes are specialized optical components that meet the stringent requirements for various high-performance applications, especially in defense, security, and aerospace.
Properties of Hot-Pressed MgF₂:
1.Flexural Strength: Typically greater than 20,000 psi, making it highly resistant to mechanical stress and suitable for demanding environments.
2.Knoop Hardness: Greater than 1350 kg/mm², ensuring excellent resistance to scratching and abrasion.
3.Optical Transmission:
- High transmission in the 2μm to 7.5μm range, making it ideal for MWIR (Mid-Wave Infrared) applications.
- Good transmission properties extend into the UV and visible ranges, providing versatility for multi-spectral applications.
Thermal Properties:
- High thermal stability, allowing it to withstand significant temperature fluctuations without degrading its optical properties.
- Low thermal expansion coefficient, which helps maintain structural integrity under thermal stress.
Applications:
1.Defense:
- Missile Domes: Protect infrared seekers and sensors in missile guidance systems.
- Reconnaissance Systems: Enhance the performance of surveillance equipment by providing clear infrared imagery.
2. Security:
- Thermal Cameras: Used in high-end thermal imaging systems for border security and surveillance.
- Night Vision Equipment: Improve the performance of night vision devices by enhancing infrared transmission.
3.Aerospace:
- Spacecraft Sensors: Protect sensitive infrared sensors from harsh space environments.
- Aerospace Optics: Used in various optical systems aboard aircraft and spacecraft due to their durability and optical clarity.
Advantages of Hot-Pressed MgF₂ Domes:
- Durability: High mechanical strength and hardness ensure longevity and reliability in harsh environments.
- Optical Clarity: Excellent transmission in the MWIR range provides high-quality infrared imaging.
- Thermal Stability: Maintains performance across a wide temperature range, crucial for aerospace and defense applications.
- Chemical Resistance: Resistant to chemical degradation, ensuring longevity in various operational environments.
Physical and Optical Properties:
| Transmission Range | 0.7 to 9μm |
| Knoop Hardness | >539kg/mm2 |
| Fracture Strength | 96MPa |
| Compression Strength | >300MPa |
| Bending Strength | >90MPa |
| Refractive Index | 1.3812+/-0.005 (at 0.5893μm) |
| Thermal Expansion | <1.3×10-5 K-1(25-300℃) |
| Density | >3.17g/cm3 |
| Transmittance | >85%(2-7.5μm) |
