Casting a lens with surface microstructures
US12358244B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Apr 14, 2021 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Sep 30, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/24
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.