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1. (WO2018082946) NEAR INFRARED LIGHT-CUTTING OPTICAL ARTICLES WITH LOW RESIDUAL COLOR

Pub. No.:    WO/2018/082946    International Application No.:    PCT/EP2017/076915
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Sat Oct 21 01:59:59 CEST 2017
IPC: G02C 7/10
G02B 1/04
Applicants: Essilor International
Inventors: FROMENTIN, Pierre
Title: NEAR INFRARED LIGHT-CUTTING OPTICAL ARTICLES WITH LOW RESIDUAL COLOR
Abstract:
The present invention relates to an optical article having a substrate made of an optical material comprising a polymer matrix and at least one near infrared absorber, wherein TVIS is higher than or equal to 70 %, TNIR is lower than or equal to 85 %, TNIR and TVIS being respectively the average optical transmittance in the 780-1400 nm and in the 380-780 nm wavelength range for the optical material through a 2 mm thick layer of said optical material. This optical article can be used to protect from noxious infrared light.