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Details

Veröffentlichungs-Nr.

EP2524798

Aktenzeichen

EP12167903

Anmeldetag

14. Mai 2012

Veröffentlichung

16. März 2016

Erteilung

16. März 2016

Rechtsraum

EP

IPC

B29D11/00G02C7/04

Abstract

The optical article comprises a transparent substrate made of organic glass, an adhesive layer covering one of faces of the transparent substrate, a transparent film that is made of thermoplastic polymer and is fixed on the transparent substrate through the adhesive layer, an anti-abrasion hard coating covering the transparent film, and a multilayer anti-reflection coating formed of alternating mineral layers with high and low refractive index. The adhesive layer is a pressure sensitive adhesive layer or a hot melt adhesive layer, and has a thickness of 15-30 mu m. The optical article comprises a transparent substrate made of organic glass, an adhesive layer covering one of faces of the transparent substrate, a transparent film that is made of thermoplastic polymer and is fixed on the transparent substrate through the adhesive layer, an anti-abrasion hard coating covering the transparent film, and a multilayer anti-reflection coating formed of alternating mineral layers with high and low refractive index. The adhesive layer is a pressure sensitive adhesive layer or a hot melt adhesive layer, and has a thickness of 15-30 mu m. The thermoplastic polymer has a glass transition temperature of 70-200[deg] C measured by dynamic mechanical analysis. The transparent film has a thickness of 60-100 mu m. The anti-abrasion hard coating has a thickness of 2-10 mu m. An independent claim is included for a process for the fabrication of an optical article.

Anmelder

Firmen

ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'OPTIQUE)
ESSILOR INTERNATIONAL (Compagnie Générale d'Optique)

Land

🇫🇷 Frankreich

Fachgebiete