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Product Announcement

Knight Optical’s Sapphire Windows for Airborne LiDAR Systems

22 Dec 2021

For airborne LiDAR systems demanding unparalleled protection in harsh environments, Knight Optical's Sapphire Windows prove an excellent component. Our premium-quality Windows are available in three varieties – Random Cut, Fluorescence-Free and C-Cut/Z-Cut

Sapphire crystal (Al2O3) is a sought-after substrate for a range of high-precision applications such as LiDAR systems. With a high transmission from 150nm up to around 5µm, it's an outstanding choice for ultraviolet (UV), visible and infrared (IR) applications. With excellent mechanical strength, scratch-resistance and hardness as well as an optimal thermal and chemical resistance, Sapphire is a perfect choice for airborne LiDAR applications.  

Available from stock (Random-Cut and C-Cut/Z-Cut varieties only), via our website for next-day dispatch, our inventory includes stock sizes from 5 to 150mm in diameter, and between 0.5 and 15mm-thick. What's more, we can edge down stock Windows to smaller diameters and square and rectangular apertures. Our Fluorescence-Free Sapphire Windows are available as custom-made components only and can be ordered by contacting a member of our Technical Sales team. 

For applications requiring a more tailored specification, we also offer Random-Cut and C-Cut/Z-Cut Sapphire Windows as custom-made components for seamless integration with your LiDAR system. This customised service allows you to specify the exact shape, size and tolerance that best suits your project. What's more, we also offer custom optical coatings for optimum transmission and added protection for your LiDAR application. 

Typical specs:

Material: Sapphire (Al2O3), Random or C-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

Surface quality: <40-20 Scratch/Dig

Coatings: Antireflective (AR) coating options to meet your wavelength requirements

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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