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Product Announcement

Knight Optical’s UV Interference Bandpass Filters for use in Astronomy

20 Sep 2021

Knight Optical can offer UV interference bandpass filters for use in Astronomy.

We supply a range of UV interference bandpass filters for a range of applications – all individually QA checked and metrology tested for quality to ensure parts meet customer specification. What’s more, our UV Interference Bandpass Filters are supplied in a range of sizes and shapes with custom coatings tailored to meet your individual applications.

Knight Optical supply precision optical components to customers in astronomy fields. Interference Bandpass Filters are used to transmit a specific wavelength band and reflect the remainder. Our UV Interference Bandpass Filters are typically made for bands between 214-320nm; however, we do stock UV and IR bandpass filter also.

They are often used with UV telescopes to observe a particular process with associated specific spectral lines. Additionally, they are also of use in fluorescence microscopy and spectroscopy when known emission spectra are looked for with these filters.

Due to the coating being deposited using energetic sputtering, this makes them very durable and resistant to harsh environmental conditions.  

Typical Specs:

Diameter and aperture (mm):    12.5mm ±0.1 (8.5mm aperture)

                                                                 25.0mm ±0.1 (21mm aperture)

                                                                 50.0mm ±0.1 (46mm aperture)

Thickness (mm):                               ≤ 6.1mm +0/-0.1

Blocking:                                             < OD4 @ 200-3000nm

CWL tolerance (nm):                      ± 20% of FWHM

FWHM tolerance (nm):                 ± 20% of FWHM

Optimum operating temp:          23°C

Edge treatment:                               Mounted in black anodised aluminium ring

Surface quality:                                80/50 Per MIL-0-13830A

Usable temperature limits:         -50°C to +80°C

All our UV Interference Bandpass Filters are fully inspected on their quality in our ISO 9001-certified, state-of-the-art Metrology laboratory, using our Cary 5000 spectrophotometer. 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 UV Interference Bandpass Filters 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

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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