Patent ID: 9488824
Filing Date: 2016-11-08
CPC Classification: G02B

Claim Text:
1. A microscopic device for three-dimensional localization of point-like objects, the microscopic device comprising: two imaging optics, each configured to image a same point-like object in a single object plane located in an object space into a respective separate image space in a form of a focused light distribution; two detector units, each associated with a respective one of the imaging optics and configured to capture an analyzable light spot in a detection point of a detection surface disposed in the respective image space that represents a planar cross section through the respective focused light distribution, each of the imaging optics including an optical device configured to orient the respective focused light distribution obliquely to a detection axis that is provided in the respective imaging optics and that is disposed perpendicularly to the detection surface of the respective detector unit, the obliquities of the two focused light distributions being opposite to each other in such a way that, taking into account the detection point correspondence, the two light spots shift in opposite directions in response to a change in the z-position of the point-like object in the respective detection surface; and an evaluation unit configured to bring the detection points of the two detection surfaces into pairwise correspondence and to analyze the two light spots in view of the image point correspondences so as to ascertain a lateral x-y position of the point-like object within the object plane residing in the object space and an axial z-position of the point-like object in a direction of an optical axis disposed perpendicularly to the object plane, the evaluation unit ascertaining the axial z-position of the point-like object based on the relative position of the two light spots.