High performance volume phase gratings
US9519089B1 · kind B1 · utility
76Cited by
381References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2014 |
| Grant date | Dec 13, 2016 |
| Priority date | — |
| Expiry date | Apr 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2027/0109
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Provided in one embodiment is an apparatus, comprising: an optical substrate configured to manipulate light received from a light source; and at least one diffractive element in one layer in the optical substrate, each diffractive element comprising: a plurality of sub-substrate structures separated from one another by a plurality of valleys, the sub-substrate structures comprising a material having a first refractive index; and a filler material filling at least partially at least some of the plurality of valleys, the filler material having a second refractive index that is unequal to the first refractive index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.