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Product Announcement

Knight Optical’s Sapphire Windows for Infrared (IR) Systems

19 Feb 2022

Highly sought-after for applications using the infrared (IR) wavelength – such as forward-looking infrared (FLIR) systems and thermography – our Sapphire Window range comprises three varieties; Random Cut, Fluorescence-Free and C-Cut/Z-Cut. What's more, as well as a wide range of stock (including sizes from 5mm to 300mm diameter and between 0.5mm – 15mm thick), we also offer Sapphire Windows as custom-made optics, meaning your application benefits from made-to-measure components for optimum performance and high precision when you order through Knight Optical.

By opting for Knight Optical's custom-made components, not only can you make the most of our 28 years of optical experience, but you can also specify the dimensions, thicknesses and coatings suited to your application. 

As well as a vast range of window options, we also offer Sapphire (Al2O3) substrates in a variety of component styles including Lenses, Prisms and Blanks for all types of applications – from the ultraviolet (UV) and visible spectrums through to the Infrared (IR), NIR (0.9 to 1.5µm) and Mid-Waveband Infra-Red (MWIR, 3 to 5µm) wavebands. For IR-specific applications, we also offer Sapphire Optics over wavebands of 0.2 to 5µm. 

Typical specs:

Material: Sapphire (Al2O3), Random Cut, Fluorescence-Free and C-Cut/Z-Cut grades

Diameter tolerance: +0.0/-0.20 mm

Length/width tolerance: +/- 0.10mm

Thickness tolerance: +/-0.10mm

Wavelength range: 0.17-5.5µm

Transmission: Tavg=85% dependent on substrate thickness

First-Class Quality 

Quality is the driving force behind Knight Optical, and to ensure you profit from high-precision optics, we take the utmost care to ensure every component accurately meets your specifications. Offering unparalleled service, Knight Optical undertakes a full inspection of your optics from our ISO 9001:2015-certified, state-of-the-art Metrology Laboratory, followed by a meticulous visual examination by our dedicated QA department. 

To discover how we can enhance your supply chain experience and to learn more about our stock and custom-made Sapphire Windows, contact a member of our technical sales team today. 

UK, Europe, Asia & RoW: E-mail info@knightoptical.co.uk 

Tel +44 (0)1622 859444

USA & Canada: E-mail usasales@knightoptical.com 

Tel +001 401-583-7846 

Knight Optical Ltd
Roebuck Business Park
ME17 1AB
United Kingdom
Tel: 44 (0)1622 859444
Fax: 44 (0)1622 859 555
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