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Product Announcement

Knight Optical’s Stock and Custom-Made Sapphire Spherical Lenses

02 Dec 2019

Sapphire crystal (Al2O3) is a sought-after substrate for a range of high-precision applications; for example, for aerospace and aeronautical vehicles and high-powered laser applications, such as Er: YAG lasers. 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 lens-based applications.  Furthermore, its durability means it repels attacks from everyday processing environments, such as those featuring hydrofluoric acid.

 Here at Knight Optical, we supply a range of stock and custom-made Sapphire Spherical Lenses in Plano-Convex, Biconvex and Concave varieties. Not only do we offer customised solutions within our Sapphire Spherical Lens range but we also provide tailored optical coatings specific to your project's requirements – such as Anti-Reflective (AR) coatings to increase efficiency in UV and IR applications – as well as various grades including Random, C-Cut, Z-Cut and Fluorescence-Free options.

 Material: Sapphire (random grade)

Diameter: +0 / -0.10mm

Centring accuracy: < 5 arc min

Focal length: ± 2.0%

Centre thickness: ± 0.25mm

Surface quality:

Coating options: Extended broadband multilayer antireflective coating <0.5%@450-900nm

 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 IR Sapphire Spherical 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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