Collimating metalenses and technologies incorporating the same
US10132465B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 15, 2018 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Mar 15, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2207/101
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Metalenses and technologies incorporating the same are disclosed. In some embodiments, the metalenses are in the form of a hybrid multiregion collimating metalens that includes a first region and a second region, wherein the hybrid multiregion collimating metalens is configured to collimate (e.g., visible) light incident thereon. In some instances the first region includes an array of first unit cells that contain subwavelength spaced nanostructures, such that the first region functions as a subwavelength high contrast grating (SWHCG), whereas the second region includes an array of second unit cell, wherein the array of second unit cells includes a near periodic annular arrangement of nanostructures such that the second region approximates the functionality of a locally periodic radial diffraction grating. Lighting devices including such metalenses are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.