Knight Optical’s Infrared (IR) Interference Bandpass Filters for Thermal Imaging
21 Jun 2020
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 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
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 email@example.com Tel +44 (0)1622 859444
USA & Canada: E-Mail firstname.lastname@example.org Tel +001 401-583-7846