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

B270 or Equivalent Windows

optical windows & diffusers for underwater opticsCustom B270 or equivalent  windows are cost effective medium performance windows. B270 or equivalent glass works efficiently from 320nm though to 2600nm with average transmission of 90% from 400nm to 2000nm

Custom B270 or equivalent windows are made from sheet material that is relatively flat. It comes as manageable sheet sizes of 258x406mm in a large range of standard thicknesses. As B270 or equivalent  material comes in standard thickness it is ideal for cost effective scientific window applications as BK7 or equivalent requires sawing and polishing processes that add to costs. Please view standard available thicknesses in “stock available” tab below.

Custom B270 or equivalent windows are excellent for use in standard window applications such as protecting visible CCTV camera or windows control panels. They are also an excellent substrate for optical mirrors and beamsplitters from Visible through to NIR types.

The glass surfaces can be machined to special shapes and surfaces can be ground to create a diffused finish. Surfaces can also be etched with screen printing designs. B270 or equivalent  is also an excellent substrate for making tempered or toughened windows for increased strength and high temperature applications.

Knight Optical supply high quality custom B270 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 B270 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