Patent ID: 9261356
Filing Date: 2016-02-16
CPC Classification: A61C,G01B,G01S,G02B

Claim Text:
1. An apparatus for measuring surface topography of a three-dimensional structure, the apparatus comprising: an optical probe configured to be moved relative to the three-dimensional structure; an illumination unit configured to generate a plurality of incident light beams, each of the incident light beams comprising a first wavelength component; an optical system configured to focus the first wavelength component of each of the plurality of incident light beams to a respective fixed focal position relative to the optical probe during the measuring of the surface topography; a detector unit configured to measure a characteristic of each of a plurality of returned light beams that are generated by illuminating the three-dimensional structure with the incident light beams; and, a processing unit coupled with the detector unit and configured to determine surface topography of the three-dimensional structure based at least in part on the measured characteristic of the plurality of returned light beams for a plurality of different relative positions and/or orientations between the optical probe and the three-dimensional structure.