Achromatic metalens and metalens with reverse chromatic dispersion
US10408416B2 · kind B2 · utility
27Cited by
2References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2018 |
| Grant date | Sep 10, 2019 |
| Priority date | — |
| Expiry date | Jan 31, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y20/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device includes a substrate, a reflective layer disposed over the substrate, and a metalens disposed over the reflective layer. The metalens includes a plurality of nanopillars, the plurality of nanopillars together specifying a phase profile such that the metalens has a focal length that is substantially constant over a wavelength range of an incident light of about 490 nm to about 550 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.