Sapphire Windows – Unparalleled Clarity and Durability
Sapphire windows are a trusted material in hermetic assemblies that demand crystal-clear optical performance, extreme hardness, thermal resilience, and chemical inertness. Advanced Hermetic Solutions integrates sapphire windows into high-precision devices for defense, aerospace, medical, and semiconductor applications.
Material Properties
- Material: Single-crystal Aluminum Oxide (Al₂O₃)
- Density: 3.98 g/cm³
- Hardness: 9 on Mohs scale
- Melting Point: 2,030°C (3,686°F)
- Thermal Conductivity: 25–46 W/m·K
- Coefficient of Thermal Expansion: 5–8 × 10⁻⁶ /K
- Optical Transmission: 0.15–5.5 µm (UV to mid-IR)
- Refractive Index: 1.74–1.77
- Dielectric Constant: 9.4–11.6
- Electrical Resistivity: >10¹⁴ Ω·cm at 25°C
- Compressive Strength: ~2,000 MPa
- Flexural Strength: 300–400 MPa
Typical Applications
Optical Viewports
Used in high-pressure and high-temperature chambers where optical clarity and mechanical durability are essential.
Sensor Windows
Protects sensitive optics and sensors in aerospace, defense, and industrial instruments without compromising signal integrity.
Medical Imaging Devices
Used in biocompatible enclosures for endoscopes, lasers, and diagnostic tools due to its optical and chemical resistance.
High-Power Lasers
Handles extreme photon flux and thermal load in high-energy optical systems without distortion or degradation.
Semiconductor Process Chambers
Withstands plasma and reactive gas environments in etching and deposition systems while maintaining full transparency.
Defense and Surveillance
Used in ruggedized optics for IR, UV, and multispectral camera systems in UAVs and field equipment.
Explore Sapphire Windows for Your Hermetic Assemblies
Partner with Advanced Hermetic Solutions for sapphire integration in your next optical, environmental, or high-performance design project. We provide engineering support, prototyping, and production-scale solutions.
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