Patent ID: 8164077
Filing Date: 2012-04-24
Classification: B82Y,G03F,G21K

Abstract:
1. An optical element for radiation in at least one of the EUV wavelength region and the soft X-ray wavelength region, the optical element comprising: a substrate; a multilayer coating deposited on the substrate with an outer surface turned toward incident radiation, wherein the multilayer coating has an optically active region and reflects the incident radiation; and a capacitor comprising a first capacitor electrode and a second capacitor electrode, wherein at least one layer of the multilayer coating is connected as the first capacitor electrode, wherein at least one dielectric layer is provided between the first capacitor electrode and the second capacitor electrode, and wherein at least one of the capacitor electrodes is connected to a switching device, by which the at least one capacitor electrode is placed selectively at ground, positive potential, or negative potential.