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


Looking For a Custom Optical Solution? Enquire

Z-Cut Quartz Windows

Custom quartz crystal windows can be custom manufactured from 5mm to 150mm dia with a thickness up to 50mm.  We regularly offer custom crystal quartz windows with a form error of ¼ waves, parallel tolerance of better than 5 arc minutes and for high quality imaging applications we can offer a scratch dig better than 20-10.  All custom windows can be supplied uncoated or antireflective coated or DLC/AR coated to meet your custom application.

Other custom crystal quartz components we offer are retarders, and wave-plates in the 1 to 3.5µm waveband, crystal quartz prisms, lenses and ground blanks.

View “available stock” tab for a range of quality stock Z-cut Quartz windows in a range of diameters and thicknesses to meet most applications.  If you require Z-cut quartz windows to a smaller size or a custom aperture we are able to machine our stock windows at short notice, please enquire.

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.
Click below to view our digital catalogue now.

view our catalogue