Hybrid grin diffractive optics
US9465144B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 30, 2013 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Apr 9, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2003/0093
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In one embodiment, an optical imaging system is disclosed incorporating at least two gradient refractive index optical elements of a plurality of gradient refractive index optical elements made from at least one bulk material having a gradient refractive index and at least one diffractive optical element of a plurality of diffractive optical elements integrated within at least one of the plurality of gradient refractive index optical elements. Various embodiments disclosed incorporate at least one diffractive optical element configured as a surface relief structure patterned on at least one surface of the at least one gradient refractive index optical element. The surface relief structure includes at least one of a diffraction grating structure, a diffractive lens structure, and a kinoform structure. The at least one bulk material includes at least one of a radial gradient refractive index, an axial gradient refractive index, and a spherical gradient refractive index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.