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Product Announcement

Knight Optical’s Germanium Windows for Thermal Imaging and Night Vision

03 Jan 2021

Offering a high refractive index and an excellent infrared (IR) transmission range, covering from 1.8-16µm, our stock and custom-made IR Germanium Windows are sought-after components for high-specification thermal imaging and night vision applications.

Offered in a range of customised sizes and shapes, Knight Optical’s top-of-the-range Germanium Windows are well-suited to a wide variety of IR applications. With a broad transmission range, as well as their opacity in the visible region of the spectrum, our Germanium Windows are not specified for integration with IR sensors, medical applications and pyrometry applications but also with IR imaging systems and thermographic cameras.

Ideally suited to thermal imaging and night vision applications, our Windows typically operate in the 2µm to 14µm spectral range, covering the long wavelength infrared (LWIR) [8-12μm] and mid-wave infrared (MWIR) [3-5μm] thermal imaging wavelength range.  

What’s more, our Germanium Windows are available with tailor-made optical coatings to meet project-specific applications, and in diameters up to 300mm.

Typical specs: 

Material: Germanium

Diameter tolerance: Up to 300mm +0, -0.02mm

Thickness tolerance: +/- 0.2mm

Flatness: < 2 waves over 90% aperture

Surface quality:  < 40-20 Scratch/Dig

Parallelism: 5 arcminutes

Coatings: Anti-Reflection/Diamond-Like Carbon (AR/DLC) (DLC @ 7-14 micron)

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 Germanium Windows, 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
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