High-Strength Optical Protection for Extreme Environments
Sapphire domes are precision-engineered optical components made from single-crystal aluminum oxide (Al₂O₃). Combining exceptional hardness, wide spectral transmission, and outstanding thermal stability, sapphire domes are the ideal solution for protecting sensitive optical systems in harsh environments.
With a hemispherical or custom dome geometry, they provide a wide field of view while maintaining superior optical clarity and structural integrity.
Why Choose Sapphire Dome?
- Ultra High Hardness (Mohs 9)
Second only to diamond, ensuring excellent scratch and wear resistance
- Wide Optical Transmission (UV–IR)
Effective transmission range from 0.2 μm to 5.5 μm
- Extreme Temperature Resistance
Stable performance up to 1600°C
- Outstanding Mechanical Strength
Resistant to impact, pressure, and high-speed airflow
- Chemical Resistance
Excellent durability in corrosive environments
Key Features
- Hemispherical design for wide-angle optical coverage
- Optical-grade polishing for high precision imaging
- Strong sealing capability for vacuum and high-pressure systems
- Fully customizable in size, thickness, curvature, and coatings
Applications
Sapphire domes are widely used in demanding industries where reliability and optical performance are critical:
- Infrared & Thermal Imaging Systems
- Missile Guidance & Defense Systems
- Aerospace Optical Sensors
- Underwater Cameras & Deep-Sea Equipment
- Laser Systems & High-Temperature Observation Windows
Specifications
| Parameter |
Value |
| Material |
Single Crystal Sapphire (Al₂O₃) |
| Diameter |
5 mm – 200 mm |
| Thickness |
0.5 mm – 30 mm |
| Surface Quality |
60/40, 40/20 (Optional) |
| Surface Accuracy |
λ/4 or better |
| Transmission Range |
0.2 – 5.5 μm |
| Shape |
Hemisphere / Custom Dome |
| Finish |
Polished / Ground |
Custom Capabilities
We provide full customization based on your application requirements:
- Custom diameter & radius
- Precision edge shaping
- AR coating (single / broadband)
- IR coating & protective coatings
- Tight tolerance machining
Competitive Advantages
- Advanced sapphire processing technology
- Stable quality for high-end applications
- Flexible MOQ & fast prototyping
- Engineering support for custom designs
FAQ
Q1: What is the advantage of sapphire over glass domes?
A: Sapphire offers significantly higher hardness, better thermal resistance, and broader optical transmission, making it ideal for extreme environments.
Q2: Can you customize dome dimensions?
A: Yes, all parameters including diameter, thickness, and curvature can be customized.
Q3: Is sapphire suitable for infrared systems?
A: Yes, sapphire performs well in near-IR and mid-IR applications.
Q4: Do you provide coating services?
A: Yes, including AR coatings, IR coatings, and protective layers.
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