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Knight Optical(UK) Ltd - [email protected] - +44 (0)1622 859444

Sapphire windows

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IR Sapphire Windows

Sapphire (Al₂O₃) is an incredibly hard crystal (HK1370kg/mm2), second only to diamond. It has high mechanical strength, thermal and chemical resistance and is scratch resistant, making it very desirable for operating in harsh conditions. Sapphire windows can be made thinner than alternative crystals thanks to its structural integrity and can operate up to 2030⁰C. The material transmits between the UV and IR at 0.15-5.5µm, and has a high refractive index of 1.75..

Sapphire has applications where its strength and durability are required. This includes pressure optical windows, furnace viewports, submersible ROVs, gas and oil analysis, barcode readers and IR analytical devices.

Knight Optical supply a range of quality Sapphire optical components including IR Sapphire windows, Sapphire lenses, Sapphire prisms, and Sapphire blanks either from stock or bespoke custom made to your specification for a range of applications. Our current range includes Random Polarisation Sapphire that can be used for most applications apart from UV use. We also stock a range of C-cut/ Z-cut sapphire for UV applications. Every component is individually tested by our highly skilled technicians in our state of the art metrology lab to ensure all components meet our high quality standards.

Contact our multilingual technical sales team and discover how Knight Optical’s high quality Sapphire optical components and service can improve your instrumentation and supply chain experience.

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Our Multi-Lingual Sales Team are here to help with your requirments:

UK +44 (0)1622 859444
UK +44 (0)1622 850614
UK +44 (0)1622 851078
+1 401 583 7846

International Shipping

We are able to ship to most countries at good rates, please click here for more info.

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