Patent ID: 7508912

Claim:
An x-ray focusing device comprising: a slide pivotable about a pivot point defined at a forward end thereof; a rail unit fixed with respect to said slide; a forward crystal, for focusing x-rays, disposed at said forward end of said slide, said forward crystal defining a forward angle of incidence with respect to said pivot point; and a rearward crystals, for focusing x-rays, movably coupled to said slide and said rail unit at a distance rearward from said forward crystal, said rearward crystal defining a rearward angle of incidence with respect to said pivot point, wherein said slide extends in a straight line between said pivot point and said rearward crystal, and wherein pivoting of said slide about said pivot point changes said forward angle of incidence and said rearward angle of incidence of said forward and rearward crystals while simultaneously changing the distance between said forward and rearward crystals.