Patent · US Active

Optical lens having a filtering interferential coating and a multilayer system for improving abrasion-resistance

US12124117B2 · kind B2 · utility

0Cited by

3References

20Claims

0Family size

Assignee

Essilor International · FR

Inventors

Christophe Valenti · Charenton-le-Pont, FR
Frédéric Guillain · Charenton-le-Pont, FR
William TROTTIER-LAPOINTE · Charenton-le-Pont, FR

Key dates

Filing date	Nov 18, 2019
Grant date	Oct 22, 2024
Priority date	—
Expiry date	Jul 18, 2041

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23C14/081
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any Ta2O5 layer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer, and a filtering interferential system that selectively reflects or transmits visible light in a narrow range of wavelengths.

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