Patent ID: 8829402

Claim:
A triangulating autofocusing device for a microscope comprising: at least one autofocus aperture stop which comprises at least one diaphragm opening arranged at a distance from the optical axis of the autofocusing device for limiting across section of a measuring beam pencil running in a direction of an optical axis of the autofocusing device and for generating a single decentered autofocus measuring beam in one half of the entire cross section of the measuring beam pencil; wherein the triangulating autofocusing device generates a measuring pattern on an object by means of the single decentered autofocus measuring beam using an objective of the microscope, and wherein the at least one autofocus aperture stop is selected from at least two different autofocus aperture stops, the diaphragm openings of which are arranged at different distances from the optical axis of the autofocusing device.