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

Iris Diaphragms (sprung steel leaves)

Knight Optical offer a range of custom apertures . Our range of custom Iris diaphragms offers circular aperture variation for the direct control of throughput in systems. Our custom Iris diaphragms are available in high quality blackened brass bodies with blackened steel leaves or uncoatedstainless steel for superior heat resistance, with our fully closing iris diaphragms dual leaf closing offering complete blocking and available in a choice of aperture sizes. Our ranges of Iris diaphragms have smooth operation from minimum to maximum aperture size. We also stock a range of Iris diaphragms not listed for ecommerce web sales, please see the tab below on other available stock. If your size is not listed we can supply customised Iris diaphragms to any size to meet your specific requirements.

Knight Optical supply high quality custom iris diaphragms made to your exact custom specification
Every component is individually tested by our highly skilled technicians in our state of art metrology lab using our Starrett AV300 non contact dimensional imaging devise to ensure all components meet our high quality standards.

Contact our multilingual technical sales team and discover how Knight Optical’s high quality custom iris-diaphragms 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