The FOX3D CU 21_21HC is a new optic by Xenocs that uses the latest progress in manufacturing technology to achieve an unprecedented collection angle and improved beam focusing.

It features a precision ellipsoidal substrate that is rendered reflective over almost 180° of revolution by a state-of-the-art multilayer coating that satisfies Bragg’s Law for Cu Kα radiation at every point on the optic. Its high precision aspheric shape allows for large sagittal collection and convergence angles, resulting in higher flux per unit angle within a 4 degree range compared to competing solutions. It also produces a very small focal spot when coupled with a micro focus source. The combination of its single reflection geometry and the precision multilayer coating results in a very high transmission efficiency of monochromatic radiation.

Slits can be easily mounted on the optic to optimize resolution (limit convergence) and due to the high flux density still obtain an intense beam for the measurement.