Method for producing optical article with anti-reflective surface, and optical article with anti-reflective surface
US12124003B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Apr 27, 2021 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Sep 16, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/101
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Methods for forming optical articles with antireflective nanostructured (ARN) surfaces. An aluminum layer is deposited or otherwise applied to the cavity of an injection mold tool. Sequential chemical treatments such as anodization and etching steps form an ARN mold texture on the interior surface of the cavity. The ARN mold texture is a negative of a desired surface texture of the article. During injection molding, the desired ARN surface is thereby produced in the optical article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.