Optical thin film for meta-surface and meta-optical device including the same
US12140734B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Feb 13, 2020 |
| Grant date | Nov 12, 2024 |
| Priority date | — |
| Expiry date | Sep 2, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/101
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical thin film includes a support layer and a dielectric layer on the support layer. The dielectric layer has a refractive index greater than that of the support layer. The dielectric layer includes a compound ADX, which includes a Group 3 element A, a Group 5 element D, and an element X having an atomic weight smaller than an atomic weight of A or D. The optical thin film may exhibit light transmission having a high refractive index and low absorptivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.