Optical system, has objective with two lens group with lens aperture arranged in between lens group, movable for adjusting reproduction scale along its optical axis, and including aspherical formed optical active surface

摘要

The system has an x-ray intensifier and an objective (1) for finite scaling down mapping of a screen of the intensifier on a receiver. The objective has two lens groups with a lens aperture arranged in between the groups. The lens group is designed as combined lens from two lenses. The objective is movable for adjusting a reproduction scale along its optical axis. The objective consists of an aspherical formed optical active surface.