Curved surface films and methods of manufacturing the same
US11977205B2 · kind B2 · utility
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10References
16Claims
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Key dates
| Filing date | Apr 1, 2022 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Apr 1, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2003/0093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical element including an optically transparent lens which defines a curved surface having a steepness given by an R/# of from about 0.5 to about 1.0. A film is positioned on the curved surface. The film includes an index layer. A composite layer is positioned on the curved surface having a refractive index greater than the index layer. The composite layer includes HfO2 and Al2O3. The composite layer has a mole fraction X of HfO2, wherein X is from about 0.05 to about 0.95 and a mole fraction of Al2O3 in the composite layer is 1−X.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.