Patent · US Active

Multi-tint ophthalmic lenses for night vision

US8192021B2 · kind B2 · utility

3Cited by

2References

12Claims

0Family size

Assignee

Essilor International (Compagnie Generale d'Optique) · FR

Inventor

Guillaume Giraudet · Charenton-le-Pont, FR

Key dates

Filing date	Nov 15, 2007
Grant date	Jun 5, 2012
Priority date	—
Expiry date	Mar 22, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/105
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The present invention relates to an ophthalmic lens comprising, on its surface, a first central yellow zone preferentially absorbing the blue light of the visible spectrum, a second peripheral zone preferentially absorbing light having wavelengths of less than 600 nm, and preferentially a third zone which is colorless, grey, or brown in the lower part of the lens.

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