OPTICAL UNIT AND ASSOCIATED METHOD

摘要

The invention relates to a multilayer reflective optical unit (10) with a lateral gradient, the reflective surface of which serves to reflect X-rays which are incident at an acute angle of incidence and produce a two-dimensional optical effect, characterised in that said reflective surface is comprised of a single surface and said reflecting surface is shaped with two curves in two different directions. The invention further relates to a method for production of such an optical unit, characterised in that the method comprises coating a substrate already having a curve and a curving of the substrate in a second different direction. Also disclosed is a device for generation and processing of X-rays for application in RX angle dispersive reflectometry, comprising an optical unit as above, coupled to an X-ray source such that the X-rays emitted by the source are processed in two dimensions to adapt the beam emitted by the source for a sample, the X-rays having incident angles which are different on the sample under consideration.