Knight Opticals' ball lenses

18 Apr 2017

Knight Opticals' Ball lenses are complete spheres. Ball lenses are widely used for focusing and coupling light into and out of fibres. Sapphire ball lens are interesting in that the high refractive index of the material gives low spherical aberration and can be used from 200nm up to 5000nm+. Our stock ball lens offered in quartz versions have good UV and IR transmission. UV grade fused silica has high transmission from 185nm up to 2000+nm. BK7 ball lenses are perfect for visible applications from 350nm through the near infrared.

In addition to our stock ball lenses, spherical ball micro lenses, we also offer a full range of custom ball lenses available in a variety of ceramic, UV and NIR materials, high index optical glasses such as BAF-8, Lasfn-9, Lasf35, S-Lah65, Lah78 which are ideal for use in fibre-coupling applications. Other technical glasses such as B270 or equivalent and borosilicate or equivalent and Cubic Zirconia ball lenses are also available. This complete range of materials is available in a full range of diameters and grades of quality. We can also offer custom ball lenses in a range of diameters and materials. Please contact our technical sales team for more information.

Specification

Material: BK7 or equivalent, Sapphire, Ruby , Quartz

Diameter: ± 2.5µm

Figure (sphericity) : 1λ

Focal length: ± 0.2% (<10mm)

± 2.0% (10-1000mm)

± 5.0% (>1000mm)

Surface quality:

Our Ball lenses are checked for quality in our state-of-the-art Metrology laboratory using equipment from Trioptics, Varian and Starret allowing 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 ball lenses 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