公开(公告)号：US12111520B2

公开(公告)日：2024-10-08

申请号：US17262874

申请日：2019-07-30

Applicant: ESSILOR INTERNATIONAL

Inventor： William Trottier-Lapointe ,  Jinhhao Ng ,  Jean-Philippe Dumont ,  Haifeng Shan ,  Philip Chang ,  Charlène Pousse

IPC: G02C7/10

CPC classification number: G02C7/107 ,  G02C7/104 ,  G02C7/108

Abstract: The invention concerns method and system for determining a lens of customized color, said method comprising the steps of determining a target colorimetric data set; providing access to a database comprising data representing colors; using a plurality of simulation modules to calculate, based on said data from the database, a plurality of simulated colorimetric data of the lens substrate combined with a mixture of dyes of determined dye(s) combination, composition and amount or with a multilayer stack as a function of determined layers composition and thicknesses; and, color matching the plurality of simulated colorimetric data with the target colorimetric data set so as to determine one or a plurality of combinations of said lens substrate with a determined mixture of dyes or with a determined multilayer stack.

公开(公告)号：US12130505B2

公开(公告)日：2024-10-29

申请号：US17280701

申请日：2019-09-26

Applicant: ESSILOR INTERNATIONAL

Inventor： Coralie Barrau ,  Elise Poletto ,  Jean-Philippe Dumont ,  Christelle Marck ,  Céline Robin ,  Valérie Jacquemin ,  Elliot French

IPC: G02C7/10 ,  G02C7/02

CPC classification number: G02C7/104 ,  G02C7/028 ,  G02C7/107 ,  G02C7/108

Abstract: This ophthalmic lens for improving vision has a light cut factor CutLED between 32% and 90%, for wavelengths ranging from 380 nm to 500 nm, defined by formula (I), where Σ is a discrete or continuous sum operator, λ is the wavelength in nm, lens T % is the spectral transmittance of the lens in % and LED emission is the spectral distribution of a white light emitting diode; a mean luminous transmittance in the visible range higher than or equal to 75%; and light transmitted through the ophthalmic lens has a colorimetric value b*, as defined in the colorimetric CIE L*a*b* with illuminant D65, lower than 25.