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Product Announcement

Knight Optical’s Domes for Pyranometers

13 Nov 2020

Offering optimum protection for Pyranometer devices, our Optical Domes provide both high transmission and extreme endurance for devices subjected to harsh environments. As well as a range of stock, we also offer custom-made Optical Domes to meet the precise needs of each and every application.

 Here at Knight Optical, we have, and continue to work with many leading brands within the solar industry over our 28 years in business, and as a result, our Optical Domes have become the components of choice for engineers working on high-precision projects such as Pyranometers. This is partly thanks to the optical knowledge of our Technical Sales Advisers and our in-house capabilities in guiding our customers' projects from conception through to success with on-spec, long-lasting components for optimum performance.

 Our Optical Domes are available in a wide range of options to meet a diverse range of requirements. From the ultraviolet (UV) through to Infrared (IR) spectrum, our custom-made Optical Domes can be manufactured from a variety of substrates (including Sapphire) to meet your project's specified waveband. These material options include, but are not limited to, BK7 (or equivalent), or NBK10 for visible applications, UV Grade Fused Silica for UV applications, Silicon for 3-5 micron in the Mid-IR band and Germanium for 7-14 micron Longwave-IR band.

 Typical specs (stock):


5mm to 300mm+


Dependent on the Diameter

Dimensional tolerances (mm):    


Max. strength variation*(diopters):      


Surface Figure (fr.):     


Concentricity (mm):     


Scratch/Dig :      





*Strength variation relative to strength at peak of dome

Optical Filter Glass, UV Fused Silica, Quartz, BK7 (or equivalent), Sapphire, Silicon, Acrylic

 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 Optical Domes, 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 

 View our QA and Metrology information

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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