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

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.