FIELD: medicine.
SUBSTANCE: group of inventions relates to medicine. The method and apparatus for localising an optical system focus with a radiation source, an image forming focusing system, at least partially reflecting a near-focus surface, a digital sensor system for filming an image reflected from the mentioned surface, a calculating unit for evaluating the filmed image, and an optical element arranged along a beam path of the optical system in front of the image forming focusing system and changing the mention image with the focus localisation.
EFFECT: application of this group of inventions enables localising the optical system focus precisely.
12 cl, 6 dwg
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