Patent ID: 7315611

Claim:
An x-ray reflector comprising: a substrate; a first layer formed on the substrate, the first layer including a relatively higher-Z material, where Z represents the atomic number; and a second layer formed on the first layer, the second layer including a relatively lower-Z material; both of the first layer and the second layer exhibiting a taper along an axis extending between a first end of the substrate and a second end of the substrate, at least one of the first layer and the second layer also substantially exhibiting arcuate uniformity along a ciiven arc defined by a radius extending from a reference point on the axis; and wherein, at any given axial position along the axial direction and treating the first and second layers as together representing a bi-layer structure, a thickness of the first layer represents about ⅖ of a total thickness of the bi-layer structure, and a thickness of the second layer represents about ⅗ of the total thickness of the bi-layer structure.