Knight Optical's N-BK7 Windows for use in Scopes

10 Feb 2018

Knight Optical offer a range of Stock N-BK7 Precision Grade Windows, for use for Scopes

At Knight Optical we can supply both stock and custom N-BK7 windows for use within Scopes such as Borescopes and Endoscopes. The high optical quality and uniform transmission of N-BK7 as well as low absorption in the entire visible wavelength range is a key feature for this application. Virtually free of bubbles and inclusions as well as being very clear and almost colourless in appearance allows of windows in this material to act in both a protective position as well as to seal the enclosure to protect the inside components of the system.

Our stock range of ¼ wave N-BK7 or equivalent windows are supplied either uncoated or with the option of an Anti-Reflective coating on both faces with extended BBAR for visible and NIR applications within the 450-900nm wavelength range. We can also offer custom solutions for your application, whether it is a custom size or a coating to optimise a different wavelength range, beamsplitter coated or mirror coated to meet your bespoke requirements.

We hold a large inventory of N-BK7 Windows.

Stock sizes from 10mm to 75mm diameter as well as square and rectangular shapes.
Custom sizes available on quotation.
Different coating options to suit your needs

Typical specs:

Material: N-BK7 or Equivalent

Diameter Tolerance: +0.0/-0.15mm

Length/Width Tolerance:             ±0.1mm
Thickness Tolerance:                     ±0.1mm
Flatness:                                            >λ/4 over 90% aperture

Surface Quality:                             <40/20 Scratch/Dig
Parallelism:                                      1 arc minute
Coating:                                             Windows with the suffix “AV2” are coated on both faces with our extended broadband multilayer antireflective coating <0.5%@450-900nm

All our N-BK7 Windows are fully inspected on their quality in our ISO 9001:2015 certified, state-of-the-art Metrology laboratory, with our Trioptics, Optispheric, Varian and Starrett AV300. This allows us to work to the highest QA standards and meet the tolerance specifications on these precision components.

Contact our technical sales team to discover how Knight Optical’s high quality N-BK7 Windows and superior service can improve your instrumentation and supply chain experience.

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

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