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

Plastic Retarders

You may prefer our range of custom plastic retarders, a relatively cost effective alternative to using mica or quartz. Plastic retarders are available in different wavelengths, and optimised for whichever part of the spectrum you choose, bespoke plastic retarders are a good choice when looking for quality results at a smaller cost.

A custom plastic retarder may be the choice product if there are weight issues within a product’s design, Knight Optical are able to offer custom sizes, thicknesses and can also laminate onto AR coated glass. We hold an extensive range of large sheets of plastic retarder that can be cut to your specific custom size at short notice.

Knight Optical supply high quality custom plastic retarders made to our exact specification. Every component is individually tested in our state-of-the-art metrology laboratory by our highly skilled technicians to ensure all components meet our high quality standards.

Contact our multilingual technical sales team and discover how Knight Optical’s high quality custom plastic retarder can improve your product and supply chain experience.

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