Patent ID: 6972065

Claim:
A method of producing a dielectric multilayer mirror coating comprising the steps of producing at least two dielectric layers of predetermined initial thicknesses, arranging the dielectric layers one above the other to form a stack of layers, arranging the stack of layers between two base layers to form a sandwich block, reducing the thickness of the sandwich block, while maintaining the thickness ratio or thickness ratios of the dielectric layers relative to one another, wherein at least one of the base layers is formed of a plurality of individual layers which are built up by sequentially arranging the individual layers in an overlying relationship, and wherein the step of reducing the thickness of the sandwich block includes deforming the individual layers which form the at least one base layer, wherein one of the individual layers is arranged to overlie a preceding layer then partially reducing the thickness of the sandwich block, and repeating the arranging and reducing steps until the last of the individual layers is applied.