Patent ID: 8217353

Claim:
Apparatus for forming an image of an object using electromagnetic radiation including microwaves, infrared and visible as well as ultrasound, said apparatus comprising: a first spherical reflector having a first Bragg angle θ 1 , a first real saggital focal length f s1 >0, a first real meridional focal length f m1 >0, and a first Rowland circle having a radius R 1 , wherein the object is positioned on said first Rowland circle; and a second spherical reflector having a second Bragg angle θ 2 , a second virtual sagittal focal length f s2 <0, a second real meridional focal length f m2 >0, and a second Rowland circle having a radius R 2 , wherein the image of the object is positioned on said second Rowland circle and said first and second Rowland circles are co-planar; wherein f s1 =f m1 +f m2 +|f s2 |.