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Product Announcement

N-BK7 (or equivalent) Windows for Scopes

23 Sep 2019

Knight Optical’s range of N-BK7 (or equivalent) Windows are ideally suited to the demands of borescopes and endoscopes. Although specified within these fields for their high optical quality and uniform transmission; one of the key features of our N-BK7 (or equivalent) Windows is their low absorption in the entire visible wavelength range. 

 Stock N-BK7 (or equivalent) Windows  

We stock a vast range of premium-quality N-BK7 (or equivalent) Windows; including quarter-wave Windows in AR-coated or uncoated varieties. Furthermore, we also offer extended Broadband Anti-Reflective (BBAR*) coatings for devices operating within the visible or NIR (450-900nm) spectrums. All stock optics are readily available for next-day global dispatch and include sizes from 10-75mm diameter and square and rectangular shapes.

 Custom-Made N-BK7 (or equivalent) Windows  

Scopes requiring tailored optical solutions can benefit from our custom-made N-BK7 (or equivalent) Windows, allowing you to specify millimetre-perfect dimensions, protective coatings and project-specific tolerances, ideally suited to your requirements. 

 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 


 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 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 N-BK7 (or equivalent) Windows, 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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