Patent ID: 11933601
Assignee: SAINT-GOBAIN GLASS FRANCE
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 2:
3. The automated method for measuring geometric curvature deviations between the dished surfaces of a plurality of materials to be assessed and a dished surface of a reference material as claimed in claim 1, further comprising, before step (a), a step (a′) of calibrating a reproducibility of spatial positionings of an assembly formed by the automatic displacement system and the optical contactless detection system in the space of the trajectory likely to be travelled along in the step (a), said step (a′) comprising the following substeps:
(a′ 1) defining a plurality of points of calibration of known spatial coordinates in a first reference frame of reference in the space of the trajectory likely to be travelled along in the step (a);
(a′2) acquiring an assembly formed by the automatic displacement system and the optical contactless detection system of the spatial coordinates of said calibration points in the reference frame of reference of said assembly formed by the automatic displacement system and the optical contactless detection system;
(a′3) calculating, by computer, a statistical correlation function between the spatial coordinates obtained in step (a′1) and the spatial coordinates obtained in the step (a′2);
(a′4) implementing the statistical correlation function in a device for controlling the movements of said assembly formed by the automatic displacement system and the optical contactless detection system.