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US 2025/0276501 A1Published application
Casting a lens with surface microstructures
AssigneeEssilor International
InventorsHao-Wen CHIU, Aref JALLOULI
Life of this patent
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Abstract
A mold element (350) is fabricated (305, 310, 315) using a first mold (5) with which microstructures (323) are integrally formed in relief on the mold element (350). A lens (340) is cast (320, 325, 330, 335) using a second mold (7) that includes the mold element (350) such that the microstructures (337) are integrally formed on the lens (340).
Claims8
A mold apparatus for casting a thermoset lens comprising:
- a thermoplastic upper mold element having disposed thereon microstructures in relief, the thermoplastic upper mold element forming a thermoplastic lens fabricated by thermoplastic injection molding;
- a lower mold element;
- and
- a gasket or a tape to retain the thermoplastic upper mold element in separation from the lower mold element and to form thereby a chamber for filling into it a monomer to be cured through thermosetting, in order to form the thermoset lens.
1 more element
Dependencies are inferred from the claim text.