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Custom Germanium Windows

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Find out more about our custom germanium windows

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Global leaders in custom optical solutions
Internationally recognised
All optical components 100% QA checked
ISO14001 & ISO9001 certified

Knight Optical offers a range of germanium windows, known for their high-density and hard nature, making them ideal for IR transmitting applications. Our germanium optical windows are perfectly suited for blocking UV and VIS wavelengths while allowing IR from 2µm, which is essential for a variety of scientific and industrial applications.

We take pride in our extensive stock, including germanium IR windows that are DLC/AR coated for 7-12 µm. However, we understand the importance of specificity for your projects, hence we provide custom germanium glass windows specifically for your unique requirements. Our custom germanium windows can range from 5mm to 300mm dia with thicknesses up to 50mm, ensuring you get the exact specifications you need.

For projects requiring high-quality imaging, we offer germanium optics with scratch-dig specifications better than 20-10. Alongside germanium windows, we also supply germanium lenses, germanium prisms, and germanium blanks, all specifically for meeting the demands of applications such as thermal imaging, wide-angle lenses, and microscopes.

Feel free to explore our available stock of germanium windows or contact us for any custom requirements. With over 30 years of experience and a commitment to providing quality solutions, Knight Optical is your trusted partner for all things germanium and more.

Speak to our experts about your Custom Germanium Window needs today

Call +44 (0)1622 859444 Call +1 401 583 7846

Make a quick enquiry about Custom Germanium Windows Now

Dive into the forefront of optical solutions. Got questions about an optical product? Reach out now and let our expertise guide you.

    Metrology Testing and Quality Assurance

    Knight Optical’s dedication to quality and precision extends beyond germanium optics. We serve various industries, providing custom solutions that meet a wide range of needs. From one-off research projects to large-scale production, we are equipped to handle orders of any size.

    Our germanium window transmission rates are excellent due to our strict quality controls and the advanced metrology testing we perform in our state-of-the-art lab. The germanium used in our optics offers the highest refractive index among commonly available IR transmitters, coupled with low optical dispersion, making it an excellent choice for high-quality imaging and lens design.

    Frequently Asked Questions

    Germanium windows are commonly used in infrared (IR) applications due to their high refractive index and low optical dispersion. Perfect for defence, medical imaging, and thermography, these windows provide clear, focused images in IR devices.

    Germanium IR windows stand out with their broad transmission range in the infrared spectrum, particularly suited for thermal imaging and spectroscopy applications. They offer better performance in IR range compared to other materials, which typically transmit less in these wavelengths.

    Yes, Germanium optical windows are known for their robustness, making them ideal for use in challenging environmental conditions, such as high temperatures and rough outdoor applications in the defence and aerospace sectors.

    The main benefit of Germanium glass windows is their ability to provide excellent infrared transmission while being mechanically tough and chemically stable. This makes them highly suitable for demanding applications, including scientific research and security systems.

    To ensure maximum transmission, keep Germanium windows clean and free from scratches. They should be integrated correctly into your optical system, considering factors such as the angle of incidence and the specific IR wavelength your system is utilising.

    Knight Optical offers bespoke solutions, including custom shapes, sizes, and coatings for Germanium optics, tailored to meet the specific requirements of your project, ensuring optimal performance for applications in various fields such as medical, security, and research.

    Is your question not here?

    We are ready and waiting to answer any queries you may have about germanium.

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    With our in-house state-of-the-art metrology laboratory you can be confident that your optical components will meet your requirements. You can find out more about our testing facilities here.

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      Operating for over 30 years

      Knight Optical has been operating for over 30 years, with our managing director Colin Overton at the helm. Over this time, we have become a global leader in the production and distribution of scientific optical components and bringing quality into focus for all of our products and services that we provide.

      Our 2022/2023 Catalogue

      Inside Knight Optical’s catalogue you’ll find details of the industries we serve as well as the many other services we can offer. It also showcases hundreds of our most popular products, supported by useful technical information, to help you choose the right part for your application.
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