Integrated optical beam steering system
US10345519B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2018 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Apr 11, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/311
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An integrated optical beam steering system includes a photonic crystal nanostructure having a plurality of nanoelements, an input surface to receive light from an imager, and a concave output surface which maintains a desired field of view with suitable coupling efficiency. Parameters of the nanoelements are configured to give rise to a photonic bandgap for a predetermined range of wavelengths. Waveguides are disposed in the nanostructure which comprise negative space formed by the absence of nanoelements and are employed to generate a propagating band within the photonic bandgap. The respective waveguides have inputs disposed on the input surfaces of the nanostructure where light propagates in a respective waveguide in total internal reflection. The respective waveguides further have outputs that have paths with curved portions located in the nanostructure and the outputs are configured normal to the concave output surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.