Ralf-Roland Sauer;Jésus Miguel Cabeza Guillén;Matthias Kubitza
发明人:
Ralf-Roland Sauer,Matthias Kubitza,Jésus Miguel Cabeza Guillén
申请号：
US13021796
公开号：
US09022565B2
申请日:
2011.02.07
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A method and an apparatus serve for checking the centering of spectacles worn by a spectacle wearer. The method comprises the steps of: a) measuring spectacle lenses mounted in a frame of the spectacles, wherein a position of permanent markings on the spectacle lenses is acquired relative to a coordinate system defined by the frame by means of an image recognition system； b) determining positions of nominal centering points, prescribed in a file, of the spectacle lenses in dependence on data of the spectacle lenses containing the position of the permanent markings； c) measuring physiological data of a spectacle wearer wearing the spectacles and determining positions of actual centering points of the spectacle lenses from the physiological data by means of a video centering instrument； d) determining the difference between the positions of the nominal centering points and the actual centering points； and e) comparing the difference to a prescribed difference threshold.
