Sapphire Dome

A sapphire dome is a hemispherical or spherical optical window made from synthetic sapphire (Al₂O₃ single crystal). It offers exceptional hardness, wide spectral transmission, and extreme environmental durability. IR sapphire domes are particularly designed for infrared imaging and sensing systems.

IR sapphire dome is ideal for the infrared spectrum.
Near infrared (NIR): 0.7-1.4 μm
Short wave infrared (SWIR): 1.4-3 μm
Mid wave infrared (MWIR): 3-5 μm
Long wave infrared (LWIR): Transmittance drops significantly when >5 μm (due to lattice vibration absorption).

Yes. We offer custom optical coatings for sapphire domes, including:

• AR coatings for UV, VIS, NIR, and IR bands

• Dichroic Filter Coating, Spectral Filter Coating, Wavelength-Selective Coating

• Dual-band or multi-band coatings

• iamond-Like Carbon (DLC) Coating

• High-durability military-grade coatings

We manufacture domes sapphire in a wide range of sizes and profiles:

• Outer diameter: 5mm – 500mm

• Radius of curvature: Customizable

• Types: Full hemispheres, custom domes, optical domes with flange, or step edges

IR sapphire domes are commonly used in the following fields:

• Military and Defense: Used to protect infrared imaging sensors, ensuring reliability during high-speed flight.

• Industrial Inspection and High-Temperature Monitoring: Applied in steel smelting and glass furnaces to isolate slag splashes and corrosive gases.

• Aerospace and Deep Space Exploration: Serve as optical windows for positioning and navigation systems.

• Medical and Life Sciences: Used as laser output windows and infrared thermal imaging windows.