Beam collimator design delivers high performance
Summary
Dr Aris Kouris - sales director of Optical Surfaces Ltd commented “Traditionally, beam collimators tend to defocus when exposed in environments that exhibit wide temperature variations. It is a particularly difficult task to balance both, the field centration and the defocus at the same time without having to control the environment itself or resorting to highly complex, dynamic and usually costly solutions. Our athermalised beam collimators are based upon a uniquely modified off-axis mirror design incorporating INVAR elements and a novel mechanical feature which, when combined, allows direct 100% thermal compensation. The all-reflecting design of Optical Surfaces beam collimators is achromatic and with aluminium / magnesium fluoride coatings can operate from the UV to the infrared without adjustment. The companys ISO 9001-2015 approved manufacturing workshops and test facilities are deep underground in a series of tunnels excavated in solid chalk.