Patent ID: 6674583
Filing Date: 2004-01-06
Classification: G21K

Abstract:
A compound refractive lens for x-rays, comprising:a plurality of individual unit lenses comprising a total of N in number, said unit lenses hereinafter designated individually with numbers i=1 through N, said unit lenses substantially aligned along an axis, said i-th lens having a displacement ti orthogonal to said axis, with said axis located such that &Sum;i=1N&it;ti=0wherein each of said unit lenses comprises a lens material selected from the group consisting of lithium, carbon, and polyimide, and having a refractive index decrement &dgr;<1 at a wavelength &lgr;<50 Angstroms; and wherein each of said individual unit lenses is an independent separate physical unit that can be stacked relative to other of said unit lenses.