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Product Announcement

Knight Optical’s UV Fused Silica Optical Components for Vacuum Windows

23 Jul 2021

Knight Optical – the leading supplier of on-spec, metrology-tested optical components – has a wide-ranging portfolio of UV Fused Silica optics available from stock or as made-to-order components. 

Known for its high purity, UV Fused Silica is a typical substrate specified for vacuum applications – in particular Windows and Lenses. The material itself is a relatively hard optical glass with a very low coefficient of thermal expansion. It is for this reason that the substrate is regularly used for vacuum-based applications, as variation in temperature will not alter the optical performance. What's more, the material has high transmission from the ultraviolet (UV) to the near-infrared (NIR) spectrum, meaning that there is little loss of image when used for a vacuum window or viewport and; therefore, the quality of the optical system is not compromised.

Available from stock or – as with all our components – as custom-made optics for seamless integration with your project, our UV Fused Silica Windows and Lenses meet a diverse range of requirements sought by a diverse range of systems. By opting for tailor-made optical components, you can specify the shape, size, optical coating and tolerances best suited to your project. 

Typical specs:

Material: UV Grade Fused Silica 

Diameter tolerance: +0 / -0.10mm

Centring tolerance: <5 arcminutes

Focal length tolerance ± 0.2mm (<10mm) ±2.0% (10mm – 1000mm)

Centre thickness tolerance: ±0.2mm

Surface figure: 3/ 3 (1)

Surface quality: <40-20 Scratch/Dig

Coating: A range of ultraviolet (UV) and Visible Antireflective (AR) options available. 

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 Lenses, 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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