Hard optical film, method for preparing same and use thereof
US12287456B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Dec 5, 2022 |
| Grant date | Apr 29, 2025 |
| Priority date | — |
| Expiry date | Dec 22, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C14/54
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hard optical film, a method for producing the same and use thereof. The film is an optical film with a nano-dual-phase structure, and features a regulable thickness, high visible light transmittance and hardness, a flat and uniform surface, and a great application prospect. The hard optical film is prepared on a surface of a substrate by magnetron sputtering, having high binding force between the obtained film and the substrate, such that the substrate has a very high hardness, a very strong abrasion resistance and certain corrosion resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.