Verfahren zur Herstellung eines Mikrostrukturierten Optischen Artikels
Anmelder: Essilor International 🇫🇷
Details
- Veröffentlichungs-Nr.
- EP4640416
- Aktenzeichen
- EP24305653
- Anmeldetag
- 26. April 2024
- Veröffentlichung
- 29. Oktober 2025
- Rechtsraum
- EP
- IPC
- B29D11/00
Abstract
Method for manufacturing a micro-structured optical article (70) comprising the steps of:- providing a support layer (56) having microstructures (58) on a back surface, the support layer (56) comprising a first optical thermoplastic material (52);- depositing, on said micro-structured surface, a second optical thermoplastic material (60) having a refractive index (RI<sub>Tie</sub>) and a glass transition temperature (Tg<sub>Tie</sub>) lower than a respective refractive index (RI<sub>Wafer</sub>) and glass transition temperature (Tg<sub>Wafer</sub>) of the first optical thermoplastic material (52), thus obtaining an intermediate tie-layer (62) which encapsulates the microstructures (58) ;- depositing, on said tie-layer (62), a third optical thermoplastic material (66) having a refractive index (RI<sub>Lens</sub>) and a glass transition temperature (Tg<sub>Lens</sub>) higher than the respective refractive index (RI<sub>Tie</sub>) and glass transition temperature (Tg<sub>Tie</sub>) of the second optical thermoplastic material (60) of the tie-layer (62), thus obtaining a body layer (68), the support layer (56), the tie-layer (62) and the body layer (68) forming altogether said micro-structured optical article (70).
Anmelder
- Firma
- Essilor International
- Land
- 🇫🇷 Frankreich
Französischer Hersteller von Brillengläsern und optischen Linsen, seit 2018 Teil des Konzerns EssilorLuxottica. Das Unternehmen forscht intensiv zu Sehkorrektur- und Beschichtungstechnologien.
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