Patent ID: 8559108

Claim:
A grating for EUV radiation, comprising a patterned substrate having first locations and second locations spread between each other, the first locations and the second locations having a mutual height difference; a plurality of reflecting lines, each reflecting line comprising a plurality of first reflecting dots, and a plurality of second reflecting dots arranged between each other, wherein the first reflecting dots and the second reflecting dots are configured to reflect EUV-radiation with a mutual phase difference of 180±10 degrees mod 360 degrees; a multilayer configured to form a Bragg-reflector for the EUV-radiation at the patterned substrate, the pattern of first locations and the second locations at the substrate being propagated into a surface of the Bragg reflector as the first reflecting dots and the second reflecting dots, respectively; and a pattern of lines made of an EUV adsorbing material at the multilayer configured to delimitate reflecting lines formed by the surface of the multilayer.