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Product Announcement

Knight Optical’s Quartz and UV Fused Silica Windows for Optical Systems

19 Dec 2021

Knight Optical stocks a vast range of high-precision Quartz and UV Fused Silica Windows in a range of shapes and sizes for a variety of applications. 

UV Fused Silica Windows 

With excellent chemical stability and superior UV transmission (down to 175nm), our cost-effective UV Fused Silica Windows are manufactured in a Corning 7980 Grade 2G substrate (equivalent to Spectrosil 2000 – also referred to as Spectrosil B). Available from our wide-ranging portfolio of stock components, or as custom-made optics, our UV Fused Silica Windows are capable of meeting a wide range of specifications. Thanks to Knight Optical's customised capabilities, our UV Fused Silica Windows can be manufactured in project-specific shapes and sizes and coated with custom optical coatings to meet the exact requirements of your project. 

Quartz Windows 

More robust than standard glass window varieties, our Quartz Windows are ideal for optical systems working in the UV spectrum (down to around 260nm). With a high transmission of over 80% from 260nm to 2500nm and a heat resistance of up to 1050°C, Quartz Windows are a prime choice of components for optical systems exposed to high temperatures. Similar to our UV Fused Silica Windows, our Quartz Windows are available from stock, via our website for next-day dispatch, or as a custom-made Window for seamless integration with your optical system. What's more, IR Grade Fused Quartz can be used in place of Quartz if your application requires transmission from 2500 to 3500nm.

Typical specs:

Material:  Quartz

IR Grade Fused Quartz (JGS3 or equivalent), 

UV Fused Silica (Spectrosil 2000 or equivalent)

Shape:  Circular windows, square windows 

Dimensional tolerances: +/- 0.1mm

Flatness: < λ/2 @ 632.8nm

Parallelism: < 1 arcminute

Surface quality: <40-20 Scratch/Dig

Coating:  Antireflective (AR) coatings available on request

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 Quartz and UV Fused Silica 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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