Verfahren zur Herstellung eines Optischen Artikels zur Kontrolle des Fortschreitens von Kurzsichtigkeitsstörungen, der mit Lichtfilterfunktionen Ausgestattet Ist

Details

Veröffentlichungs-Nr.

EP4737104

Anmeldetag

29. Oktober 2024

Veröffentlichung

6. Mai 2026

Rechtsraum

EP

IPC

B29D11/00

Abstract

A method for manufacturing an optical article for controlling eye-length related disorders with light filtering functions comprising the steps of: - providing (50) a mold (70) comprising a shaped portion (70a) having a concave micro-structured surface and a smooth portion (70b) having a smooth surface defining a cavity (73); - inserting (52) a light filtering wafer (72) against the concave micro-structured surface (70a); - injecting (56) an optical thermoplastic material (74) into the cavity (73) of the mold (70) via a filler (76), against a back surface of the light filtering wafer (72); - applying a packing pressure via the filler (76) to force more optical thermoplastic material (74) into the mold (70) to compensate for a shrinkage of the optical thermoplastic material (74) during cooling; - opening (58) the mold (70) after the optical thermoplastic material (74) is solidified, thus obtaining an optical article (78) having microstructures (80) on a front surface of the light filtering wafer (72).

Anmelder

Firma

Essilor International

Land

🇫🇷 Frankreich