Crazing resistant coating and method thereof
US11112620B2 · kind B2 · utility
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44References
13Claims
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Key dates
| Filing date | May 7, 2019 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | May 7, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/14
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An anti-reflective coating system configured to resist crazing resulting from applied compressive forces, and an optical article employing the anti-reflective coating system; and methods of forming the same. The methods include forming a first anti-reflective coating over a first surface of the optical article and applying a second anti-reflective coating over a second surface of the optical article, where the second anti-reflective coating has substantially the same reflectance than the first anti-reflective coating and a mechanical property distinct from the first anti-reflective coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.