Patent · US Active

Method for determining an edge of an uncut spectacle lens

US8840246B2 · kind B2 · utility

1Cited by

5References

10Claims

0Family size

Assignee

Essilor International (Compagnie Generale d'Optique) · FR

Inventors

Fabien Lafon · Charenton-le-Pont, FR
Thierry Baudart · Charenton-le-Pont, FR
Guillaume Martin · Moissy-Cramayel, FR

Key dates

Filing date	Dec 23, 2010
Grant date	Sep 23, 2014
Priority date	—
Expiry date	May 29, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/025
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Method for determining the edge contour of an uncut spectacle lens comprises: a spectacle frame data providing step, a minimum edge thickness providing step, an initial contour providing step, a thickness determining step, an optimized point selecting step, a repeating step, and a edge contour determining step.

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