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Product Announcement

Knight Optical’s Infrared (IR) Interference Bandpass Filters for Thermal Imaging

21 Jun 2020

Knight Optical – the leading supplier of on-spec, metrology-tested optical components – has a wide-ranging portfolio of Infrared (IR) Interference Bandpass Filters available. 

 Our premium-quality, custom-made Infrared (IR) Interference Bandpass Filters are commonly integrated with thermal imaging applications for a wide range of applications within industries such as environmental monitoring and security; for example. In fact, they are regularly used for detection of a wide range of gases. Furthermore, they can be manufactured to a required centre wavelength (CWL) with a narrow bandwidth in the SWIR, MWIR and LWIR. What's more, due to the coating being deposited using energetic sputtering, it makes them very durable and resistant to harsh environmental conditions.

 Only available as a custom-made component, our IR Interference Bandpass Filters meet a diverse range of requirements. By opting for our tailor-made optical components, you can specify the shape, size, substrate – including material options such Silicon, Sapphire, Germanium and IR Quartz, to name but a few – optical coating and tolerances best suited to your project. 

 Typical specs:

Typical wavelength range: 1-40μm

Material: Fused Silica, Silicon and Germanium

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

CWL tolerance (nm): ± 20% of FWHM

FWHM tolerance (nm): ± 20% of FWHM

Optimum operating temp: 23°C

Edge treatment: Unmounted or mounted in a black anodised aluminium ring

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

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

 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 custom-made IR Interference Bandpass Filters, contact a member of our technical sales team today. 

 Contact our technical sales team to discover how Knight Optical’s high quality 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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