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.