Patent ID: 7755842

Claim:
An anastigmatic anamorphic lens unit for processing images, particularly multidimensional images, in spatially resolved spectroscopy, having a high anamorphic factor, which is an anamorphic factor greater than 3.0, comprising several lens subassemblies, wherein a positive refractive subassembly (a), comprising at least one rotationally symmetrical lens or lens group, is disposed on the lens side in order to reduce the field angles, a central optical subassembly (b) being disposed behind the positive refractive subassembly (a) in the beam path for beam divergence in one or more direction perpendicular to the optical axis, while maintaining small field angles, wherein the central optical subassembly (b) comprises at least one anamorphically distorting element and one or more rotationally symmetrical lens or lens groups, and an additional optical subassembly (c) being disposed on the image side for narrowing and for enlarging the aperture on the axis in which the beam is diverged, wherein the optical subassembly (c) on the image side alternately comprises at least one anamorphically distorting element and at least one rotationally symmetrical lens or lens group.