Knight Optical’s N-BK7 Windows for use with Graticules

10 Jan 2018

Knight Optical offer a range of Stock N-BK7 Precision Grade Windows, for use with our Graticules.

Graticules are manufactured by photolithographically printing a highly accurate pattern onto a glass substrate such as N-BK7. The exact pattern is dependent on the products application and typically takes on a form of scales or crosshairs. As well as being used for traditional microscope slides, our graticules are used in sighting applications such as ranging for weapon sights or telescopes

At Knight Optical we can supply both stock and custom N-BK7 windows to use as a substrate for your graticules. 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.

We hold a large inventory of N-BK7 Windows for Graticules.

Stock sizes from 19mm to 23mm diameter for our Eyepiece Graticules
76mm x 25mm for our stock Stage Graticules.
Mounting options
Custom sizes available on quotation.
Other types of graticule available on request.

Typical specs:

Material: N-BK7 or Equivalent

Diameter Tolerance: 19mm to 23mm or custom

Dimensions: +0.0/-0.1mm
Surface Quality: <20/100 Scratch/Dig
Chamfer: 0.2x45°

All our N-BK7 Windows for graticules 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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