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Fabrication Technique: Chemical Vapor Deposition (CVD) is a method used to grow thin films or layers of materials onto a substrate under controlled conditions. It allows for precise control over material properties and thickness.
Maximum Diameter: Up to 280mm, indicating large-scale optical components.
Thermo-mechanical Properties: Excellent mechanical strength and endurance in hostile environments, suggesting durability and reliability.
Transmission Range: Wide transmission range from 7.5μm to 12μm (micrometers), which corresponds to the long-wave infrared (LWIR) region. High transmission rates in this range are crucial for infrared imaging and other applications.
Applications: Ideal for infrared imaging systems, missile guidance systems, scientific instruments, and other applications requiring precise infrared optics.
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Maximum Diameter: Up to 280mm, allowing for large-scale optical applications without compromising performance.
Wide Operation Wavelength Range: Germanium domes exhibit broad transmission capabilities across the infrared spectrum, from 2µm to 14µm. This makes them ideal for capturing both mid-wave infrared (MWIR) and long-wave infrared (LWIR) wavelengths, crucial for thermal imaging and sensing applications.
Mechanical Ruggedness: Known for their durability and mechanical strength, germanium domes withstand harsh environments encountered in aerospace and defense operations. They provide a reliable protective barrier for sensitive optical components.
Low Chromatic Dispersion: Maintaining minimal chromatic dispersion ensures that germanium domes deliver high-resolution images with accurate color representation in the infrared spectrum.
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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.
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Flexural Strength: ZnSe’s flexural strength is lower than the 20,000 psi criterion but can be enhanced with coatings.
Knoop Hardness: At ~120 kg/mm², ZnSe is softer compared to other materials like sapphire.
Optical Transmission: ZnSe offers excellent transmission in the MWIR range, making it ideal for thermal imaging.
Thermal Properties: ZnSe has good thermal conductivity and a moderate thermal expansion coefficient, making it stable under varying temperatures.
Applications: IR optics, thermal imaging, missile domes, targeting systems, night vision, aerospace optics, etc.
