Blaulichtschneiden von Optischem Material mit einem Benzotriazol-Uv-Absorber

Details

Veröffentlichungs-Nr.

EP3203271

Aktenzeichen

EP16305149

Anmeldetag

8. Februar 2016

Veröffentlichung

27. Januar 2021

Erteilung

27. Januar 2021

Rechtsraum

EP

IPC

G02B1/04G02B5/22G02B5/20// C08K5/3475C07D249/20

Abstract

Optical material comprising a polymer matrix and at least one benzotriazole compound having at least one ester group, wherein said at least one benzotriazole is a chlorobenzotriazole compound that does not comprise any polymerizable group selected from allylic, acrylic and methacrylic moieties, or the optical transmittance through a 2 mm thick layer of said optical material is lower than 1 % for each light wavelength ranging from 280 to 400 nm, and higher than 65 % for light having a wavelength of 430 nm. This optical material can be used to protect from phototoxic blue light and UV light.

Anmelder

Firmen

Essilor International
ESSILOR INTERNATIONAL (Compagnie Générale d'Optique)

Land

🇫🇷 Frankreich

Fachgebiete