Akademie Der Wissenschaften Der Ddr

Holger Fritz

Klaus Korner

The invention relates to a method and a system for measuring the microstructure of technical surfaces on the principle of the interference microscope. In accordance with the invention, the virtual planes of reflection present in the object beam space and reference beam space are imaged in an optically conjugated manner by different offsets, while the point at which the beam is split and the point where it is recombined are separated in space and a correction is performed such that the object beam and reference beam propagate parallel to one another in a common beam space. In this manner it is possible, in interferometric measurement, to eliminate undesired circular interference structures and render unnecessary any physical reference surface.

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Berlin, Germany

Holger Fritz