Patent · US Active

Method and device for checking the centering of at least one spectacle lens

US11221505B2 · kind B2 · utility

0Cited by

1References

15Claims

0Family size

Assignee

RODENSTOCK GMBH · DE

Inventors

Markus Tiemann · Munich, DE
Martin Dumm · Kirchberg, DE
Monika Füss · Munich, DE
Roswitha Fendt · Munich, DE
Holger Wild · Berlin, DE

Key dates

Filing date	Jun 20, 2017
Grant date	Jan 11, 2022
Priority date	—
Expiry date	Jun 10, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/021
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In a method for checking the centration of at least one spectacle lens, the spectacle lens is arranged in a field of capture of an image capturer; at least one image of the spectacle lens is captured by means of the image capturer; and positions of functional engravings of the spectacle lens in the captured image are determined. Furthermore, at least one lens contour of the at least one spectacle lens in the captured image is determined and the centration of the spectacle lens is checked taking into account the determined positions of the functional engravings, the determined lens contour and a known, wearer-dependent target geometry of the centration.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.