CG MATERIAL
Sapphire Ball Dome
Sapphire Ball Dome
Sapphire ball domes are precision-shaped optical components made from single-crystal aluminum oxide (Al₂O₃). They combine exceptional hardness, excellent optical transmission, and outstanding resistance to heat, pressure, and corrosion, making them ideal for demanding optical and protective applications.
CG Material supplies custom sapphire ball domes with high optical quality, tight dimensional tolerance, and excellent surface finish.
Specifications
| Property | Value |
|---|---|
| Material | Single Crystal Al₂O₃ |
| Purity | 99.99% |
| Density | 3.97 g/cm³ |
| Hardness | Mohs 9 |
| Refractive Index | 1.76–1.77 |
| Thermal Conductivity | 35–42 W/m·K |
| Melting Point | 2053°C |
| Transmission Range | 0.15–5.5 μm |
Available Types
- Full Sapphire Ball Domes
- Half Ball Domes (Hemisphere)
- Custom Radius Ball Domes
- Precision Optical Ball Domes
- Thick-Wall Protective Ball Domes
Typical Dimensions
- Diameter: 5 mm – 100 mm (customizable)
- Wall Thickness: Customized
- Surface Finish: Ground / Optical Polished
- Optical Quality: Standard / High Precision / Laser Grade
- Tolerance: Tight tolerance available upon request
Applications
- Infrared (IR) optical systems
- Defense and aerospace sensor windows
- High-pressure optical observation systems
- Semiconductor plasma equipment
- Laser and imaging systems
- Underwater and harsh-environment optics
- Scientific instrumentation
Sapphire Ball Dome vs Glass Dome
| Property | Sapphire Dome | Glass Dome |
|---|---|---|
| Hardness | Mohs 9 | ~Mohs 5–6 |
| Scratch Resistance | Excellent | Low |
| Pressure Resistance | Very High | Moderate |
| Temperature Resistance | Up to ~1800°C | <600°C |
| Optical Durability | Long service life | Limited |
| Chemical Resistance | Excellent | Moderate |
Why Choose CG Material Sapphire Domes?
- Stable single crystal material supply
- High precision machining capability
- Consistent optical quality control
- Support for custom engineering designs
- Fast quotation for OEM/industrial projects
Request a Quote
Send us your required diameter, curvature radius, thickness, surface quality, and application details. Our engineering team will respond with a tailored solution and quotation.
