Patent · US Active

Spectacle lens having a photochromic coating and method for producing the same

US11874534B2 · kind B2 · utility

0Cited by

10References

44Claims

0Family size

Assignee

Carl Zeiss Vision International GmbH · DE

Inventors

Norbert Hugenberg · Aalen, DE
Silvia Faul · Aalen, DE
Bin Peng · Lo Wu, CN
David Robert Diggins · Loxton, AU
Michael Krieger · Miami Beach, US
Markus Haidl · Aalen, DE

Key dates

Filing date	Oct 23, 2020
Grant date	Jan 16, 2024
Priority date	—
Expiry date	Oct 6, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG02C7/107
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A spectacle lens includes at least one substrate and at least one photochromic layer. The spectacle lens exhibits no swelling of the coating and/or of the substrate in the event of at least one damage to the surface of the spectacle lens with a force of ≤65 m N after contamination of the surface of the spectacle lens with at least one organic acid over a period from a range of 12 hours to 84 hours. Further, a method for producing the spectacle lens and the use of at least one chemically modified layer and/or at least one barrier layer for coating a spectacle lens substrate is disclosed.

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