Verfahren zur Charakterisierung von mindestens einem Teil eines Linsenelements

Details

Veröffentlichungs-Nr.

EP4556844

Aktenzeichen

EP23306972

Anmeldetag

14. November 2023

Veröffentlichung

14. Januar 2026

Erteilung

14. Januar 2026

Rechtsraum

EP

IPC

G01B11/25G01M11/02G02C7/02

Abstract

Method for characterizing at least part of a lens element, for example a myopia control lens element, adapted for a wearer, said lens element providing a first optical function having a refractive power based on the prescription of the wearer, and comprising a plurality of optical elements, each optical element of the plurality of optical elements providing one or more optical functions, at least one of which is different from the first optical function; wherein the method comprises: - obtaining a two-dimension representation of the local optical power of at least part of the lens element using a deflectometry method or fringe projection profilometry, - determining the optical power distribution over at least part of the two-dimension representation of the lens element in the form of a representation of the data as a histogram or a stem-and-leaf plot; and - characterizing at least the part of the lens element within said at least part of the two-dimension representation of the lens element by analyzing the representation of the data, for example characterizing the histogram or stem-and-leaf plot.

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Firma

Essilor International

Land

🇫🇷 Frankreich

Fachgebiete