Europe, UK, Asia & RoW: [email protected] +44 (0)1622 859444 | USA & Canada: [email protected] +1 401-583-7846

BREXIT UPDATE: Knight Optical will continue to provide quality assured service for all your optical requirements both custom & stock. We will handle all requirements caused by the new regulations.


Looking For a Custom Optical Solution? Enquire

Precision Grade Windows

Knight Optical supply a range of custom precision grade BK7 windows. Custom precision windows are used to seal optical enclosures especially suited to low power laser applications. Our custom range of ¼ wave BK7 or eqivalent windows can be supplied uncoated or AR coated on single faces or both faces with one of our standard antireflective coatings or to your custom wavelength requirement.

We are also soon to introduce a range that offers increased performance in the telecom region of 1100-1700nm.

Our custom BK7 or equivalent windows can also be coated with beamsplitter and mirror coatings to meet your bespoke custom requirements.

Our custom range of BK7 or equivalent windows have very parallel faces so will introduce minimal beam deviation. Flatness and surface quality is also tightly controlled. Custom flatter options are available please enquire.

Knight Optical supply high quality custom precision windows made to your exact specification. Every component is individually tested by our highly skilled technicians in our state of art metrology lab to ensure all components meet our high quality standards.

Contact our multilingual technical sales team and discover how Knight Optical’s high quality custom precision windows and service can improve your instrumentation and supply chain experience.

Our 2021/2022 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.
Click below to view our digital catalogue now.

view our catalogue

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