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Product Announcement

Knight Optical’s λ/10 Mirrors for Imaging Applications

19 Apr 2021

Available in a wide range of substrate choices – such as BK7 (or equivalent), Zerodur, Quartz, UV Fused Silica (plus many more) – Knight Optical’s λ/10 Mirrors are regularly specified for high-end imaging systems across a wide range of industries. Whether your application operates within the visible, ultraviolet (UV), near-infrared (NIR) or infrared (IR) spectrum, we supply a wide-ranging portfolio of λ/10 Mirrors suitable for a variety of uses. What makes our λ/10 Mirrors so popular amongst those specifying for imaging systems is their ability to produce a better-quality signal from the mirror, resulting in sought-after higher quality imaging. 

Available as stock or custom-made components, in Convex, Concave and Planoconvex component types – manufactured in accordance with each project’s stringent requirements – our λ/10 Mirrors are made from low expansion glass for optimum stability, and to maintain the lambda/10 flatness. What's more, to ensure the production of unparalleled premium-quality images within these systems, our λ/10 Mirrors can be applied with a variety of coatings to ensure that the perfect quality image in the wavelength you require is achieved. Such coatings include: 

  • Enhanced aluminium 94%R for visible applications
  • 99.9% dielectric for laser use in visible applications
  • Ultraviolet (UV) aluminium for UV applications down to 180nm
  • 98.5% dielectric for laser use in the NIR applications
  • Ion-plated silver for NIR-2000nm applications
  • Protected gold for 750nm to far-infrared (FIR) applications

Typical specs:

Material: N-BK7 (or equivalent), Zerodur, UV Fused Silica, Borosilicate

Shape: Circular, square or rectangular

Dimensional tolerances: +/- 0.5mm

Parallelism: < 3 arcminutes

Surface quality: <10-5 Scratch/Dig

Flatness: λ/10 or λ/20 over 90% of mirror aperture 

(Rear is commercial polish)

Coating: A range of mirror coatings are available to suit your application's wavelength

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 λ/10 Mirrors, 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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