daily coverage of the optics & photonics industry and the markets that it serves
Featured Showcases
Optics+Photonics Showcase
Product Announcement

Knight Optical’s BK7 (or equivalent) Right-Angle Prisms

21 Nov 2022

Alongside our vast range of UV Fused Silica Right-Angle Prisms (in stock and custom-made varieties and for use for wavelengths down to 175nm), we also offer a range of BK7 (or equivalent) Right-Angle Prisms to meet a range of requirements. 

Right-Angle Prisms are made up of triangular blocks of glass with two 45° and one 90° angle. Used to turn light through 90° by internal reflection from the optic’s hypotenuse; our Right-Angle Prisms are available in two grades, Precision and Standard

Both Precision and Standard grades – alongside a range of Extended Broadband Anti-Reflective Right-Angle Prisms – are available from our vast range of stock or as custom-made components, in coated and uncoated options; to meet an extensive range of requirements. 

 Typical Specs

Material: BK7 (or equivalent)

Dimensions: +0.0/-0.2mm

Angles: ±1 arcmin

Surface quality: <40:20 scratch/dig

Flatness: <λ/4 over 25mm (over inscribed eclipse)


AR coatings: 

Anti-Reflective (AR) coated/extended visible (AV2),

Broadband Multilayer AR, R.avg <0.5%@450-950nm, AOI= 0°-45 °

Mirror coatings: 

Protected aluminium/visible use (MV2) Ali/SiO₂ R.avg >88%@450-650nm, AOI=0°-45°

NB: Protection is matt black paint; however, surfaces on custom-made prisms can be coated with epoxy matt black paint.

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 BK7 (or equivalent) Right-Angle Prisms, 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
Email Us
Web Site
© 2023 SPIE Europe
Top of Page